Pressure chamber and die casting apparatus

Abstract

The disclosure provides a compression chamber and a die casting device, the compression chamber comprises a compression chamber body, a bushing and a feeding hole, the bushing is arranged on the inner wall of the compression chamber body at the feeding hole, the compression chamber body has a shot cavity, the feeding hole penetrates the compression chamber body and the bushing and communicates with the shot cavity, the shot cavity is provided with an anti-erosion part at an erosion area, the erosion area is a landing area of the liquid metal in the shot cavity through the feeding hole. Since the shot cavity is provided with an anti-erosion part at the erosion area, when the liquid metal pours into the erosion area through the feeding hole, the anti-erosion part in the erosion area is first eroded, the anti-erosion part can significantly improve the resistance of the erosion area to high-temperature metal liquid, reduce the wear caused by the erosion of high-temperature metal liquid, effectively prolong the service life of the compression chamber body and the bushing, reduce the replacement frequency, and thus reduce the maintenance cost and the production cost.

Description

Technical Field

[0001] This disclosure belongs to the field of pressure manufacturing technology, and specifically relates to a pressure chamber and a die-casting device. Background Technology

[0002] In related technologies, the pressure chamber, also known as the injection chamber or barrel, is one of the core components of a die-casting machine. Because the pressure chamber is subjected to the scouring of high-temperature molten metal, high pressure, and repeated thermal fatigue cycles over a long period—for example, typically withstanding temperatures of 700 degrees Celsius and pressures of hundreds of megapascals—it suffers from problems such as easy damage, short service life, high cost, and complex replacement. Utility Model Content

[0003] This disclosure aims to at least partially address one of the technical problems in the related art.

[0004] Therefore, embodiments of this disclosure provide a pressure chamber and a die-casting apparatus.

[0005] The pressure chamber of this embodiment includes a pressure chamber body, a bushing, and a feed port. The bushing is disposed on the inner wall of the pressure chamber body at the feed port. The pressure chamber body has an injection cavity. The feed port penetrates the pressure chamber body and the bushing and communicates with the injection cavity so that the liquid material is poured into the injection cavity through the feed port. The injection cavity is provided with an anti-erosion component at the erosion zone. The erosion zone is the area where the liquid material lands in the injection cavity through the feed port.

[0006] In this embodiment of the pressure chamber, an anti-erosion component is installed at the erosion zone of the injection chamber. When the molten metal is poured into the erosion zone through the feed hole, it first washes against the anti-erosion component located in the erosion zone. The anti-erosion component can significantly improve the resistance of the erosion zone to high-temperature molten metal, reduce wear caused by the scouring of high-temperature molten metal, effectively extend the service life of the pressure chamber body and bushing, reduce the replacement frequency, and thus reduce maintenance and production costs. At the same time, it can also reduce downtime caused by replacing the pressure chamber body and bushing, which helps to improve the efficiency of the entire die-casting production line.

[0007] In some embodiments, the bushing is annularly disposed on the inner wall of the injection chamber, and the annular region of the bushing at least includes the annular inner wall portion of the pressure chamber body where the feed port is located. This allows the bushing to provide additional protection for the inner wall of the pressure chamber body near the feed port, preventing high-temperature molten metal from causing wear and erosion to the inner wall of the pressure chamber body near the feed port through the feed port, thereby improving the service life of the pressure chamber body.

[0008] In some embodiments, the annular region at least covers the area touched by the molten metal as it enters the injection chamber through the feed port. The impact point and surrounding area of ​​the high-temperature molten metal upon entering the injection chamber are most susceptible to erosion and wear. By ensuring that the bushing annular region covers these critical areas, targeted protection can be provided, extending the service life of the pressure chamber.

[0009] In some embodiments, the bushing has a through hole at the erosion zone, and the anti-erosion component is embedded in the through hole. When the anti-erosion component needs to be replaced, it can be simply removed from the through hole on the bushing without replacing the entire bushing. This not only facilitates replacement and maintenance but also reduces the use of expensive wear-resistant materials, thereby lowering the overall material cost.

[0010] In some embodiments, a joint gap is provided between the erosion-resistant component and the bushing to accommodate thermal expansion and provide a seal. In high-temperature environments, the bushing and erosion-resistant component will thermally expand due to temperature changes. The joint gap between the erosion-resistant component and the bushing allows for some free movement of the bushing and erosion-resistant component during thermal expansion, preventing stress concentration and structural damage caused by thermal expansion.

[0011] In some embodiments, the splice gap size between the erosion-resistant component and the bushing is designed to accommodate the thermal expansion of the erosion-resistant component and the bushing under high-temperature conditions. When the erosion-resistant component and the bushing expand due to temperature increases, an appropriate splice gap size can prevent internal stresses caused by thermal expansion, which helps reduce material fatigue and damage due to thermal stress. By reducing thermal and mechanical stresses, the service life of the erosion-resistant component and the bushing can be significantly extended, thereby reducing the frequency and cost of maintenance and replacement.

[0012] In some embodiments, the joint gap size between the erosion-resistant component and the bushing meets the sealing requirements of the injection chamber for the feed liquid. This ensures that the feed liquid will not leak from the injection chamber, maintaining a good seal even under extreme conditions such as high pressure or temperature variations. Due to the excellent sealing performance, maintenance work caused by leakage can be reduced, lowering downtime and maintenance costs. Preventing leakage of high-pressure feed liquid also reduces workplace safety risks, avoiding potential personal injury and equipment damage. Furthermore, good sealing performance helps maintain stable pressure inside the injection chamber, thereby improving injection efficiency and product quality. Since the feed liquid will not penetrate into components that should not be in contact with it, the service life of the erosion-resistant component and the bushing can also be extended.

[0013] In some embodiments, the erosion-resistant component and the bushing are fixed at the joint. This improves the stability of the overall structure and prevents component displacement due to thermal expansion or mechanical vibration. Simultaneously, fixing the erosion-resistant component and bushing at the joint also helps maintain a good seal, preventing leakage of high-temperature molten metal and ensuring the smooth operation of the injection process.

[0014] In some embodiments, the anti-erosion component and the bushing are welded together on the outer side of the bushing opposite to the feed port. Welding provides a very robust connection, enhancing the connection strength between the anti-erosion component and the bushing and preventing loosening of the component due to mechanical vibration or thermal stress under high temperature and pressure conditions. Simultaneously, the welded connection helps improve overall durability, enabling the anti-erosion component and bushing to withstand long-term high temperature and pressure operating conditions. Furthermore, the welded connection helps improve heat conduction efficiency, promotes uniform heat distribution, and reduces thermal stress. In addition, the welded structure is more robust, helping to prevent leakage of molten metal under high pressure conditions and improving the safety of the production process. After the anti-erosion component wears out, a new one can be easily replaced by welding.

[0015] In some embodiments, the thickness of the erosion-resistant component is substantially the same as the thickness of the bushing. This helps ensure that both expand uniformly with temperature changes, reducing stress concentration and deformation caused by differences in thermal expansion. The same thickness also helps maintain structural balance between the erosion-resistant component and the bushing, avoiding localized stress concentrations caused by thickness differences.

[0016] In some embodiments, the erosion-resistant component exhibits higher erosion resistance to the molten metal than either the bushing or the pressure chamber body. The erosion-resistant component is provided to protect the bushing and pressure chamber body from direct impact by the high-temperature molten metal. Due to its superior erosion resistance, the component can absorb the impact force of the high-temperature molten metal, thereby reducing wear on the bushing and pressure chamber body.

[0017] In some embodiments, the erosion-resistant component is a tungsten carbide alloy component. Tungsten carbide alloys exhibit excellent wear resistance, maintaining their shape and dimensions under prolonged high temperature and pressure conditions, thus extending the component's service life. Furthermore, tungsten carbide alloys can maintain their performance at temperatures exceeding [a certain temperature range] degrees Celsius, which is crucial for erosion-resistant components subjected to high-temperature molten metal during die casting. Tungsten carbide alloys also possess good corrosion resistance, resisting corrosive elements such as oxides and sulfides that may be present in high-temperature molten metal. The high strength of tungsten carbide alloys allows them to maintain structural integrity under high pressure conditions, preventing deformation or damage. Tungsten carbide alloys have good thermal conductivity, facilitating rapid heat dissipation during injection and reducing damage caused by thermal stress. Despite their extreme hardness, tungsten carbide alloys can still be shaped and machined using appropriate processing techniques to manufacture erosion-resistant components that meet specific requirements.

[0018] In some embodiments, the pressure chamber body is a mold steel body, and the bushing is a mold steel sleeve. Mold steel has good wear resistance, allowing it to maintain its shape and dimensions under high temperature and pressure conditions, thereby extending the service life of the bushing and pressure chamber body. Mold steel can also maintain its performance at high temperatures, which is crucial for the pressure chamber body and bushing that withstand high-temperature molten metal. Mold steel also has a certain degree of corrosion resistance, resisting corrosive elements that may be present in the high-temperature molten metal. Mold steel has high strength, maintaining the structural integrity of the bushing and pressure chamber body under high pressure conditions, preventing deformation or damage. Mold steel has good thermal conductivity, facilitating rapid heat dissipation during injection, reducing damage to the bushing and pressure chamber body caused by thermal stress.

[0019] In some embodiments, the pressure chamber body has a first end and a second end along its axial direction, the feed port is disposed adjacent to the first end, and the inner wall of the pressure chamber body is provided with a mounting groove extending from the first end toward the second end, and the bushing is detachably disposed in the mounting groove.

[0020] The mounting slot provides a fixed position for the bushing and facilitates its replacement. Because the bushing is removable, maintenance personnel can quickly inspect and replace it without a complex disassembly process. When the bushing needs replacement, only the bushing needs to be replaced, thus reducing downtime for the entire die-casting system. Quick bushing replacement minimizes production interruptions, thereby improving the overall efficiency of the production line. Different types of bushings can be used to meet varying die-casting requirements, accommodating different materials and process specifications.

[0021] In some embodiments, the pressure chamber of this disclosure further includes a pressure plate connected to a first end of the pressure chamber body to secure the bushing. The pressure plate ensures that the bushing does not move or shift during injection, thereby maintaining the stability and repeatability of the injection process. When the bushing needs to be replaced, maintenance personnel can first remove the pressure plate and then remove the bushing for replacement. Simultaneously, the pressure plate provides additional support and sealing, helping to prevent leakage of molten metal under high pressure conditions. Furthermore, the addition of the pressure plate enhances the structural strength of the pressure chamber body, helping to withstand the high pressure and thermal stress generated during die casting, and reducing deformation or damage caused by high temperature and pressure.

[0022] In some embodiments, the central axis of the feed hole passes substantially through the center of the anti-erosion component. When high-temperature molten metal enters the bushing through the feed hole, it can maximize the scouring of the anti-erosion component, thereby reducing direct scouring of other parts of the bushing besides the anti-erosion component and extending the service life of the bushing.

[0023] In some embodiments, the feed orifice has an outer port and an inner port along its axial direction, the inner port being directly opposite the anti-erosion component in the radial direction of the injection chamber. This ensures that the flow path of the high-temperature molten metal is as short and direct as possible, reducing energy loss. The alignment of the anti-erosion component with the inner port allows it to directly withstand the impact of the high-temperature molten metal, thereby protecting the bushing from direct impact and reducing wear.

[0024] In some embodiments, the feed orifice has an outer port and an inner port along its axial direction. In a projection plane orthogonal to the opening direction of the inner port, the outer peripheral contour of the inner port coincides with or lies within the outer peripheral contour of the anti-erosion component. This allows the high-temperature molten metal entering the bushing to be completely flushed onto the anti-erosion component, avoiding flushing other parts of the bushing besides the anti-erosion component, reducing direct impact and wear on the bushing, thereby protecting the bushing and pressure chamber body from damage and improving the overall structural durability.

[0025] In some embodiments, the distance between the outer periphery of the inner port and the outer periphery of the erosion-resistant component is less than 20 mm. This balances manufacturing cost and bushing lifespan.

[0026] In some embodiments, within the cross-section of the bushing, the distance between the line connecting the two ends of the anti-erosion component and the center of the anti-erosion component is less than half and greater than one-quarter of the bushing radius. This reduces vibration and deformation caused by the impact of high-temperature molten metal, thereby improving the durability and stability of the anti-erosion component. The closer distance between the two ends and the center of the anti-erosion component helps optimize impact dispersion. The impact force of the high-temperature molten metal can be more evenly distributed on the anti-erosion component, thereby reducing direct impact and wear on the bushing.

[0027] In some embodiments, the pressure chamber body is provided with a vent hole communicating with the injection chamber. The vent hole helps to expel these gases, reducing the formation of cavitation and bubbles, thereby improving the quality of the die-cast product. Expelling gas through the vent hole ensures that the high-temperature molten metal can completely fill the injection chamber, improving the integrity of the filling and reducing product defects.

[0028] In some embodiments, a positioning groove is provided on the outer wall surface of the bushing, and a positioning part is provided on the outer periphery of the anti-erosion component, the positioning part fitting within the positioning groove. Through the cooperation of the positioning groove and the positioning part, the anti-erosion component can be securely fixed within the bushing, preventing displacement or detachment even under high pressure and high temperature environments. The engagement of the positioning part helps prevent the anti-erosion component from rotating within the bushing, thus maintaining its effective working condition and reducing wear caused by rotation. The cooperation of the positioning groove and the positioning part also makes the installation and replacement of the anti-erosion component easier; when replacement is needed, it can be quickly removed from the positioning groove and a new component installed.

[0029] In some embodiments, the positioning portions are multiple and evenly arranged circumferentially along the anti-erosion component. This ensures that the anti-erosion component is subjected to uniform force across the entire circumference, avoiding damage caused by localized stress concentration. The evenly distributed positioning portions provide more support points, thereby improving the stability of the anti-erosion component within the bushing and helping to prevent displacement or detachment under high pressure and high temperature environments. The multiple positioning portions also facilitate the installation and replacement of the anti-erosion component; when replacement is needed, it can be quickly removed from the positioning slot and a new component installed.

[0030] In some embodiments, the positioning portion is configured as an annular flange formed on the outer periphery of the erosion-resistant component. When the erosion-resistant component needs to be replaced, it can be quickly removed from the positioning slot and a new erosion-resistant component can be installed.

[0031] In some embodiments, the positioning part is connected to the bushing by fasteners. The positioning part connected by fasteners can be easily disassembled and replaced, facilitating maintenance and repair.

[0032] In some embodiments, the erosion-resistant component is plate-shaped or block-shaped. Plate-shaped or block-shaped erosion-resistant components have simple geometries, which makes them easy to install and manufacture, and also helps to reduce manufacturing costs.

[0033] In some embodiments, the erosion-resistant component is configured as an erosion-resistant material layer formed on the inner wall of the bushing. The erosion-resistant material layer has a low coefficient of thermal expansion, which reduces thermal stress caused by temperature changes, helping to reduce bushing deformation and damage. The manufacture of the erosion-resistant coating is generally simple and can be achieved through spraying, electroplating, or other surface treatment techniques; this ease of application helps reduce manufacturing costs.

[0034] The die-casting equipment of this disclosure includes the pressure chamber described in any of the above embodiments.

[0035] In some embodiments, the pressure chamber of this disclosure further includes a mold and a punch, the punch being movably fitted within the injection chamber.

[0036] In some embodiments, the feed hole is located at one end of the injection chamber near the punch. The movement of the punch can control the flow of molten metal within the injection chamber, ensuring that the molten metal can uniformly fill the mold, thereby improving the molding quality of the product. The movement of the punch can also accelerate the molten metal filling process, increasing production efficiency.

[0037] In some embodiments, a steel ring is provided at one end of the punch that fits within the injection chamber. Since each bushing replacement requires grinding and fitting the punch, the steel ring at one end suffices; only the ring needs to be ground and fitted to the new bushing, eliminating the need to replace the entire punch or injection chamber, thus saving costs. Simultaneously, the steel ring provides additional sealing performance, preventing leakage of high-temperature molten metal from the interface between the punch and the injection chamber under high pressure. The steel ring also serves as structural support, enhancing the stability of the punch-injection chamber interface and preventing deformation caused by high temperature and pressure.

[0038] The pressure chamber of this disclosure includes a pressure chamber body and a bushing. The pressure chamber body has an injection cavity. The bushing is detachably disposed within the pressure chamber body. The injection cavity has a feed hole penetrating the pressure chamber body and the bushing. The bushing has an anti-erosion component opposite to the feed hole.

[0039] In this embodiment of the pressure chamber, the bushing has an anti-erosion component opposite to the feed port. When the molten metal enters the bushing through the feed port, it first scours the anti-erosion component. This component significantly improves the resistance of the erosion zone to high-temperature molten metal, reducing wear on the inner wall of the bushing caused by the scour of the molten metal. This effectively extends the service life of the bushing, reduces the replacement frequency, and thus effectively extends the service life of the bushing, thereby reducing maintenance and production costs. Simultaneously, it reduces downtime due to bushing replacement, contributing to improved efficiency of the entire die-casting production line. The bushing is detachably mounted within the pressure chamber body. When the bushing is worn or damaged, it can be easily removed from the pressure chamber body and replaced with a new bushing, further reducing maintenance costs and downtime.

[0040] In some embodiments, the anti-erosion component is constructed as an anti-erosion material layer formed on the inner wall portion of the bushing opposite the feed orifice. The anti-erosion material layer typically has a low coefficient of thermal expansion, which reduces thermal stress caused by temperature changes, helping to reduce bushing deformation and damage. The application of the anti-erosion coating is generally simple and can be achieved through spraying, electroplating, or other surface treatment techniques; this ease of application helps reduce manufacturing costs.

[0041] In some embodiments, the bushing has a through hole on its inner wall, and the erosion-resistant component is constructed as an erosion-resistant block or plate embedded in the through hole. The erosion-resistant block or plate typically has a simple geometry, which makes the erosion-resistant component easy to install and manufacture, and also helps reduce manufacturing costs. Installation of the erosion-resistant block or plate is generally simple, and it can be fixed to the bushing by fasteners, welding, or other connection methods. When the erosion-resistant component wears or is damaged, the presence of the erosion-resistant block or plate simplifies the replacement process, allowing maintenance personnel to quickly remove the damaged component and install a new one.

[0042] In some embodiments, the pressure chamber body is a mold steel body, the bushing is a mold steel sleeve, and the erosion-resistant component is a tungsten carbide alloy component. The combination of mold steel and tungsten carbide alloy can be optimized according to the functional requirements of different components. Mold steel provides the stability and durability of the overall structure, while tungsten carbide alloy provides erosion resistance, thus achieving a balanced material combination.

[0043] The pressure chamber of this embodiment includes a pressure chamber body, a bushing, and a feed port. The bushing is disposed within the pressure chamber body, and the feed port penetrates both the pressure chamber body and the bushing. The bushing has higher erosion resistance than the pressure chamber body.

[0044] In this embodiment of the pressure chamber, the bushing has higher erosion resistance than the chamber body. When high-temperature molten metal enters the bushing through the inlet, the bushing can withstand the erosion caused by the molten metal, reducing wear and tear and significantly extending the bushing's service life. This, in turn, greatly improves the service life of the pressure chamber. Furthermore, the extended bushing life reduces the frequency of bushing replacement, thus lowering maintenance and replacement costs. In addition, reducing downtime due to bushing replacement also helps improve the efficiency of the entire die-casting production line.

[0045] In some embodiments, the pressure chamber body has a first end and a second end along its axial direction, the feed port is disposed adjacent to the first end, and the inner wall of the pressure chamber body is provided with a mounting groove extending from the first end toward the second end, the bushing being detachably disposed within the mounting groove. The mounting groove provides a fixed position for the bushing and also facilitates bushing replacement. Because the bushing is detachable, maintenance personnel can quickly inspect and replace the bushing without a complex disassembly process.

[0046] In some embodiments, the pressure chamber body is a mold steel body, and the bushing is a tungsten carbide alloy bushing. Mold steel possesses high hardness, wear resistance, and good high-temperature resistance, making it suitable for manufacturing the pressure chamber body. This is because the pressure chamber body needs to withstand the high pressure and high temperature of the molten metal, and these properties of mold steel help improve the structural strength and service life of the pressure chamber. Tungsten carbide alloy is a very hard and wear-resistant material with excellent erosion resistance. During the die-casting process, the flow of high-temperature molten metal causes severe impact and wear on the interior of the bushing. The tungsten carbide alloy bushing can effectively resist these impacts and wear, protecting the pressure chamber body from damage. The combination of mold steel and tungsten carbide alloy can be optimized according to the functional requirements of different components. Mold steel provides overall structural stability and durability, while tungsten carbide alloy provides erosion resistance, thus achieving a balanced material combination.

[0047] The pressure chamber of this disclosure includes a pressure chamber body, which has an injection cavity and a feed port communicating with the injection cavity. An anti-erosion component is provided on the inner wall of the pressure chamber body opposite to the feed port. Since the anti-erosion component can withstand the scouring of high-temperature molten metal, the high-temperature molten metal can directly scour the anti-erosion component through the feed port, reducing the scouring and wear of the pressure chamber body by the high-temperature molten metal, thereby significantly improving the service life of the pressure chamber body. Simultaneously, the frequency of pressure chamber body replacement can be reduced, thus lowering maintenance and replacement costs. Furthermore, reducing downtime due to pressure chamber body replacement also helps improve the efficiency of the entire die-casting production line.

[0048] In some embodiments, the erosion-resistant component is constructed as a tungsten carbide alloy layer formed on the inner wall surface of the pressure chamber body or as a tungsten carbide alloy plate embedded in the inner wall surface of the pressure chamber body. The tungsten carbide alloy layer formed on the inner wall surface of the pressure chamber body typically has a low coefficient of thermal expansion, reducing thermal stress caused by temperature changes and helping to reduce deformation and damage to the pressure chamber body. The application of tungsten carbide alloy coatings is generally simple and can be achieved through spraying, electroplating, or other surface treatment techniques, which helps reduce manufacturing costs. The erosion-resistant component is constructed as a tungsten carbide alloy plate embedded in the inner wall surface of the pressure chamber body. Tungsten carbide alloy plates provide more robust protection because they typically have higher thickness and strength; such plates can be embedded in the inner wall surface of the pressure chamber body to withstand the impact and abrasion of high-temperature molten metal.

[0049] The die-casting equipment of this disclosure includes the pressure chamber described in any of the above embodiments. Attached Figure Description

[0050] Figure 1 This is a schematic diagram of the structure of the die-casting equipment according to an embodiment of the present disclosure.

[0051] Figure 2 This is a cross-sectional view of a die-casting apparatus according to an embodiment of the present disclosure.

[0052] Figure 3 This is a cross-sectional view of the pressure chamber according to the first embodiment of this disclosure.

[0053] Figure 4 This is a cross-sectional view of the pressure chamber according to the second embodiment of this disclosure.

[0054] Figure 5 This is a cross-sectional view of the pressure chamber according to the third embodiment of this disclosure.

[0055] Figure 6 This is a schematic diagram of the structure of the bushing according to the first embodiment of this disclosure.

[0056] Figure 7 This is a cross-sectional view of the bushing according to the first embodiment of this disclosure.

[0057] Figure 8 This is a schematic diagram of the installation of the bushing and erosion-resistant component according to the first embodiment of this disclosure.

[0058] Figure 9 This is a cross-sectional view of the bushing and erosion-resistant component installation according to the first embodiment of this disclosure.

[0059] Figure 10 This is a cross-sectional view of the bushing according to the second embodiment of this disclosure.

[0060] Figure label: 100. Pressure chamber; 1000. Die-casting equipment; 1. Pressure chamber body; 101. Injection chamber; 102. First end; 103. Second end; 104. Mounting groove; 105. Air extraction hole; 2. Bushing; 201. Through hole; 202. Positioning groove; 3. Feed hole; 4. Anti-erosion component; 401. Positioning part; 5. Pressure plate; 6. Punch; 7. Steel ring. Detailed Implementation

[0061] Embodiments of this disclosure are described in detail below, with examples of these embodiments illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this disclosure, and should not be construed as limiting it.

[0062] The pressure chamber and die-casting equipment of embodiments of the present disclosure will now be described with reference to the accompanying drawings.

[0063] like Figures 1 to 10 As shown, the pressure chamber 100 of this embodiment includes a pressure chamber body 1, a bushing 2, and a feed hole 3. The bushing 2 is disposed on the inner wall of the pressure chamber body 1 at the feed hole 3. The pressure chamber body 1 has an injection cavity 101. The feed hole 3 penetrates the pressure chamber body 1 and the bushing 2 and communicates with the injection cavity 101 so that the liquid material is poured into the injection cavity 101 through the feed hole 3. An anti-erosion component 4 is provided in the erosion zone of the injection cavity 101. The erosion zone is the area where the liquid material falls into the injection cavity 101 through the feed hole 3.

[0064] In the die casting production process, the high-temperature molten metal (such as high-temperature aluminum alloy melt) is poured into the bushing 2 through the feed hole 3 in the pressure chamber 100 of this embodiment of the present disclosure, and then enters the injection chamber 101 through the bushing 2. The injection chamber 101 is used to store the molten material and inject it into the die casting mold to produce die casting products.

[0065] Because the injection chamber 101 is equipped with an anti-erosion component 4 located in the erosion zone, when the molten metal is poured into the erosion zone through the feed hole 3, it first washes over the anti-erosion component 4 located in the erosion zone. The anti-erosion component 4 can significantly improve the resistance of the erosion zone to high-temperature molten metal, reduce wear caused by the scouring of high-temperature molten metal, effectively extend the service life of the pressure chamber body 1 and the bushing 2, reduce the replacement frequency, and thus reduce maintenance and production costs. At the same time, it can also reduce downtime caused by replacing the pressure chamber body 1 and the bushing 2, which helps to improve the efficiency of the entire die-casting production line.

[0066] Specifically, such as Figure 3 , Figure 7 , Figure 8 and Figure 9As shown, the bushing 2 is annularly disposed on the inner wall of the injection chamber 101, and the feed hole 3 penetrates the pressure chamber body 1 and the bushing 2 radially along the bushing 2. The bushing 2 has a through hole 201 directly opposite the feed hole 3, and the anti-erosion component 4 is embedded in the through hole 201. The inner wall surface of the anti-erosion component 4 is substantially flush with the inner wall surface of the bushing 2, and the outer wall surface of the anti-erosion component 4 is substantially flush with the outer wall surface of the bushing 2. As one embodiment, the outer wall surface of the bushing 2 is also provided with a positioning groove 202, and the anti-erosion component 4 is provided with a positioning part 401. The positioning part 401 forms the outer peripheral flange of the anti-erosion component 4, and the positioning part 401 fits in the positioning groove 202.

[0067] In some embodiments, the bushing 2 is arranged around the inner wall of the injection chamber 101. The area around the bushing 2 includes at least the inner wall portion of the pressure chamber body 1 where the feed hole 3 is located. Specifically, the bushing 2 can be arranged around the inner wall of the injection chamber 101, or around the inner wall including the section where the feed hole 3 is located, to protect the service life of the components at the feed position.

[0068] like Figure 3 As shown, since the feed hole 3 is the key channel for high-temperature molten metal to enter the injection chamber 101, the surrounding area will be subject to strong scouring and wear. The bushing 2 is annularly mounted on the inner wall of the injection chamber 101, and the annular area of ​​the bushing 2 includes at least the annular inner wall portion of the pressure chamber body 1 where the feed hole 3 is located. This allows the bushing 2 to provide additional protection for the inner wall of the pressure chamber body 1 near the feed hole 3, preventing the high-temperature molten metal from causing wear and erosion to the inner wall of the pressure chamber body 1 near the feed hole 3 through the feed hole 3, thus improving the service life of the pressure chamber body 1.

[0069] In some embodiments, the annular region at least covers the area touched by the molten metal as it enters the injection chamber 101 through the feed hole 3. In practical applications, the area touched by the molten metal as it enters the injection chamber 101 through the feed hole 3 can be the point where the molten metal falls into the injection chamber 101 and the area where it may splash, thus providing some protection to the inner wall of the injection chamber 101 against the impact pressure of the molten metal, especially the thermal impact of the high-temperature molten metal. Since the impact point and surrounding area of ​​the high-temperature molten metal when it enters the injection chamber 101 are most susceptible to erosion and wear, by ensuring that the bushing 2 annularly covers these critical areas, targeted protection can be provided, extending the service life of the pressure chamber 100.

[0070] In some embodiments, the bushing 2 has a through hole 201 in the erosion zone, and the anti-erosion component 4 is embedded in the through hole 201. The through hole 201 and the embedded anti-erosion component 4 are located in the erosion zone, which is the area where the liquid material falls into the injection chamber 101 through the feed hole 3, i.e., the area with the greatest thermal shock force relative to the feed hole 3. The anti-erosion component 4 is made of a metal material with a lower erosion reaction to the liquid material. For example, the bushing 2 is made of steel, and the anti-erosion component 4 is made of tungsten carbide alloy. Tungsten carbide alloy has a lower erosion reaction to high-temperature aluminum alloy feed than steel, which can reduce the use of expensive wear-resistant materials, thereby reducing the overall material cost.

[0071] In some embodiments, a splice gap is provided between the erosion-resistant component 4 and the bushing 2 to accommodate thermal expansion and provide a seal. In high-temperature environments, both the bushing 2 and the erosion-resistant component 4 will thermally expand due to temperature changes. The splice gap between the erosion-resistant component 4 and the bushing 2 allows for some free movement during thermal expansion, preventing stress concentration and structural damage caused by thermal expansion. Simultaneously, by providing the splice gap, the thermal stress between the erosion-resistant component 4 and the bushing 2 can be reduced, preventing thermal cracking caused by temperature gradients. Since the splice gap between the erosion-resistant component 4 and the bushing 2 can accommodate thermal expansion, this helps reduce fatigue damage caused by temperature changes, thereby extending the service life of the bushing 2 and the erosion-resistant component 4. Furthermore, the splice gap makes the replacement of the erosion-resistant component 4 easier, as it allows the erosion-resistant component 4 to be removed and installed without damaging the overall structure.

[0072] In some embodiments, the splicing gap size between the anti-erosion component 4 and the bushing 2 is such that it satisfies the thermal expansion of the anti-erosion component 4 and the bushing 2 under high temperature conditions containing the liquid.

[0073] When the erosion-resistant component 4 and bushing 2 expand due to increased temperature, appropriate joint gap dimensions can prevent internal stress caused by thermal expansion, which helps reduce material fatigue and damage caused by thermal stress. By reducing thermal and mechanical stress, the service life of the erosion-resistant component 4 and bushing 2 can be significantly extended, thereby reducing the frequency and cost of maintenance and replacement.

[0074] In some embodiments, the splice gap size between the erosion-resistant component 4 and the bushing 2 meets the sealing requirements of the injection chamber 101 for the liquid material.

[0075] Because the joint gap size between the erosion-resistant component 4 and the bushing 2 meets the sealing requirements of the injection chamber 101 for the liquid material, it ensures that the liquid material will not leak from the injection chamber 101, maintaining a good sealing effect even under extreme conditions such as high pressure or temperature changes. Due to the excellent sealing performance, maintenance work caused by leakage can be reduced, lowering downtime and maintenance costs. Preventing leakage of high-pressure liquid material also reduces workplace safety risks, avoiding potential personal injury and equipment damage. Furthermore, good sealing performance helps maintain stable pressure inside the injection chamber, thereby improving injection efficiency and product quality. Since the liquid material will not penetrate into components that should not be in contact with it, the service life of the erosion-resistant component 4 and the bushing 2 can also be extended.

[0076] In some embodiments, the erosion-resistant component 4 and the bushing 2 are fixed at the joint. Fixing the erosion-resistant component 4 and the bushing 2 at the joint improves the overall structural stability and prevents component displacement due to thermal expansion or mechanical vibration. Simultaneously, fixing the erosion-resistant component 4 and the bushing 2 at the joint also helps maintain a good seal, preventing leakage of high-temperature molten metal and ensuring the smooth operation of the injection process.

[0077] In some embodiments, the anti-erosion component 4 and the bushing 2 are welded together on the outer side of the bushing 2 opposite to the feed hole 3. Welding provides a very robust connection, enhancing the connection strength between the anti-erosion component 4 and the bushing 2, and preventing loosening of the components due to mechanical vibration or thermal stress under high temperature and high pressure conditions. Simultaneously, the welded connection helps improve overall durability, enabling the anti-erosion component 4 and the bushing 2 to withstand long-term high temperature and high pressure operating conditions. Furthermore, the welded connection helps improve heat conduction efficiency, promotes uniform heat distribution, and reduces the generation of thermal stress. In addition, the welded fixed structure is more robust, helping to prevent leakage of molten metal under high pressure conditions and improving the safety of the production process. After the anti-erosion component 4 wears out, a new anti-erosion component 4 can be easily replaced by welding.

[0078] In some embodiments, the thickness of the erosion-resistant component 4 is substantially the same as the thickness of the bushing 2. For example... Figure 9 As shown, the fact that the thickness of the erosion-resistant component 4 is approximately the same as that of the bushing 2 helps ensure that both expand uniformly with temperature changes, reducing stress concentration and deformation caused by differences in thermal expansion. The same thickness also helps maintain structural balance between the erosion-resistant component 4 and the bushing 2, avoiding localized stress concentration caused by thickness differences. Furthermore, the same thickness helps maintain consistency in the wear resistance, heat resistance, and other properties of the erosion-resistant component 4 and the bushing 2. Because of the same thickness, it is easier to assess the wear condition of the components during maintenance and replace them when necessary.

[0079] Specifically, according to experimental tests, the service life of the bushing in the related technology is about 5,000 cycles, while the service life of the bushing 2 in this embodiment can reach about 20,000 cycles, which increases the service life of the bushing 2 by about three times.

[0080] In some embodiments, the erosion-resistant component 4 exhibits higher erosion resistance to the molten metal than either the bushing 2 or the pressure chamber body 1. The erosion-resistant component 4 is provided to protect the bushing 2 and the pressure chamber body 1 from direct impact by the high-temperature molten metal. Due to its superior erosion resistance, the erosion-resistant component 4 can absorb the impact force of the high-temperature molten metal, thereby reducing wear on the bushing 2 and the pressure chamber body 1.

[0081] In some embodiments, the erosion-resistant component 4 is a tungsten carbide alloy component. Tungsten carbide alloys have excellent wear resistance, allowing them to maintain their shape and dimensions under prolonged high temperature and pressure conditions, thus extending the component's service life. Tungsten carbide alloys can also maintain their performance at temperatures exceeding 1000 degrees Celsius, which is crucial for the erosion-resistant component 4, which withstands high-temperature molten metal during die casting. Tungsten carbide alloys also possess good corrosion resistance, resisting corrosive elements such as oxides and sulfides that may be present in the high-temperature molten metal. The high strength of tungsten carbide alloys allows them to maintain structural integrity under high pressure conditions, preventing deformation or damage. Tungsten carbide alloys have good thermal conductivity, facilitating rapid heat dissipation during injection and reducing damage caused by thermal stress. Although tungsten carbide alloys are very hard, they can still be shaped and machined using appropriate processing techniques to manufacture the erosion-resistant component 4 that meets the requirements of the design.

[0082] In some embodiments, the pressure chamber body 1 is a mold steel body, and the bushing 2 is a mold steel sleeve. Mold steel has good wear resistance, allowing it to maintain its shape and dimensions under high temperature and pressure conditions, thereby extending the service life of the bushing 2 and the pressure chamber body 1. Mold steel can also maintain its performance at high temperatures, which is crucial for the pressure chamber body 1 and bushing 2, which withstand high-temperature molten metal. Mold steel also has a certain degree of corrosion resistance, resisting corrosive elements that may be present in the high-temperature molten metal. Mold steel has high strength, maintaining the structural integrity of the bushing 2 and the pressure chamber body 1 under high pressure conditions, preventing deformation or damage. Mold steel has good thermal conductivity, facilitating rapid heat dissipation during injection, reducing damage to the bushing 2 and the pressure chamber body 1 caused by thermal stress.

[0083] In some embodiments, the pressure chamber body 1 has a first end 102 and a second end 103 along its axial direction, the feed hole 3 is disposed adjacent to the first end 102, and the inner wall of the pressure chamber body 1 is provided with a mounting groove 104 extending from the first end 102 toward the second end 103, and the bushing 2 is detachably disposed in the mounting groove 104.

[0084] like Figure 2 and Figure 3 As shown, the mounting slot 104 provides a fixed position for the bushing 2 and also facilitates its replacement. Because the bushing 2 is removable, maintenance personnel can quickly inspect and replace it without a complex disassembly process. When the bushing 2 needs replacement, since only the bushing 2 needs to be replaced, downtime for the entire die-casting system can be reduced. Quick replacement of the bushing 2 reduces production interruptions, thereby improving the overall efficiency of the production line. If necessary, different types of bushings 2 can be replaced according to different die-casting requirements to accommodate different materials and process requirements.

[0085] In some embodiments, the pressure chamber 100 of this disclosure further includes a pressure plate 5, which is connected to the first end 102 of the pressure chamber body 1 to fix the bushing 2.

[0086] like Figure 2 As shown, the pressure plate 5 can be connected to the first end 102 of the pressure chamber body 1 via mechanical connection or other fixing methods (such as bolt fixing). This ensures that the bushing 2 will not move or shift during the injection process, thereby maintaining the stability and repeatability of the injection process. When the bushing 2 needs to be replaced, maintenance personnel can first remove the pressure plate 5 and then remove the bushing 2 for replacement. At the same time, the pressure plate 5 also provides additional support and sealing effect, helping to prevent leakage of molten metal under high pressure conditions. In addition, the addition of the pressure plate 5 enhances the structural strength of the pressure chamber body 1, helping to withstand the high pressure and thermal stress generated during the die casting process, and reducing deformation or damage caused by high temperature and high pressure.

[0087] In some embodiments, the central axis of the feed hole 3 passes substantially through the center of the anti-erosion component 4. The anti-erosion component 4 is provided to reduce the erosion wear on the bushing 2 when the high-temperature molten metal flows. Since the central axis of the feed hole 3 passes substantially through the center of the anti-erosion component 4, when the high-temperature molten metal enters the bushing 2 through the feed hole 3, the high-temperature molten metal can be maximally eroded by the anti-erosion component 4, thereby reducing direct erosion of other parts of the bushing 2 besides the anti-erosion component 4, and thus extending the service life of the bushing 2.

[0088] In some embodiments, the feed port 3 has an outer port and an inner port along its axial direction, the inner port being directly opposite the anti-erosion member 4 in the radial direction of the injection cavity 101.

[0089] like Figure 3As shown, the outer port receives the high-temperature molten metal, while the inner port guides it to the anti-erosion component 4. The inner port and the anti-erosion component 4 are radially aligned in the injection chamber 101. After entering the bushing 2, the high-temperature molten metal flows directly to the anti-erosion component 4. This alignment ensures that the flow path of the high-temperature molten metal is as short and direct as possible, reducing energy loss. The anti-erosion component 4's alignment with the inner port allows it to directly withstand the impact of the high-temperature molten metal, thus protecting the bushing 2 from direct impact and reducing wear.

[0090] In some embodiments, the feed hole 3 has an outer port and an inner port along its axial direction. In a projection plane orthogonal to the opening direction of the inner port, the outer peripheral contour of the inner port coincides with or is located within the outer peripheral contour of the anti-erosion component 4.

[0091] The outer periphery of the inner port coincides with or is embedded within the outer periphery of the anti-erosion component 4, ensuring precise alignment between the flow direction of the high-temperature molten metal and the anti-erosion component 4. This allows the high-temperature molten metal entering the bushing 2 to be completely flushed onto the anti-erosion component 4, avoiding flushing other parts of the bushing 2 except for the anti-erosion component 4. This reduces direct impact and wear on the bushing 2, thereby protecting the bushing 2 and the pressure chamber body 1 from damage and improving the overall durability of the structure.

[0092] In some embodiments, the distance between the outer periphery of the inner port and the outer periphery of the anti-erosion component 4 is less than 20 mm. For example, the distance between the outer periphery of the inner port and the outer periphery of the anti-erosion component 4 is 2 mm, 5 mm, 10 mm, 15 mm, or 18 mm.

[0093] If the distance between the outer periphery of the inner port and the outer periphery of the anti-erosion component 4 is too small, when the high-temperature molten metal enters the bushing 2 through the feed hole 3, it will easily erode the part of the bushing 2 located at the edge of the anti-erosion component 4, resulting in a reduction in the service life of the bushing 2. If the distance between the outer periphery of the inner port and the outer periphery of the anti-erosion component 4 is too large, for example, 50 mm, when the high-temperature molten metal enters the bushing 2 through the feed hole 3, it will not easily erode the part of the bushing 2 located at the edge of the anti-erosion component 4, but it will result in material waste of the anti-erosion component 4, leading to higher costs. Therefore, by keeping the distance between the outer periphery of the inner port and the outer periphery of the anti-erosion component 4 less than 20 mm, both manufacturing costs and the service life of the bushing 2 can be balanced.

[0094] In some embodiments, within the cross-section of the bushing 2, the distance between the line connecting the two ends of the anti-erosion component 4 and the center of the anti-erosion component 4 is less than half the radius of the bushing 2 and greater than one-quarter of the radius of the bushing 2. That is, the closer distance between the two ends of the anti-erosion component 4 and its center reduces vibration and deformation caused by the impact of the high-temperature molten metal, thereby improving the durability of the anti-erosion component 4 and contributing to its stability. The closer distance between the two ends of the anti-erosion component 4 and its center also helps optimize impact dispersion. The impact force of the high-temperature molten metal can be more evenly distributed on the anti-erosion component 4, thereby reducing direct impact and wear on the bushing 2.

[0095] In some embodiments, the pressure chamber body 1 is provided with an air extraction port 105 communicating with the injection chamber 101. For example... Figures 1 to 3 As shown, during the die casting process, when the high-temperature molten metal enters the injection chamber 101, it may introduce air or generate gas. The evacuation port 105 helps to expel these gases, reducing the formation of cavitation and bubbles, thereby improving the quality of the die-cast products. Expelling gas through the evacuation port 105 ensures that the high-temperature molten metal can completely fill the injection chamber 101, improving the integrity of the filling and reducing product defects.

[0096] In some embodiments, the outer wall surface of the bushing 2 is provided with a positioning groove 202, and the outer periphery of the anti-erosion component 4 is provided with a positioning part 401, which is fitted into the positioning groove 202.

[0097] like Figures 7 to 9 As shown, through the cooperation of the positioning groove 202 and the positioning part 401, the anti-erosion component 4 can be firmly fixed in the bushing 2, and will not shift or fall off even under high pressure and high temperature environments. The cooperation of the positioning part 401 helps to prevent the anti-erosion component 4 from rotating in the bushing 2, thus maintaining the effective working state of the anti-erosion component 4 and reducing wear caused by rotation. The cooperation of the positioning groove 202 and the positioning part 401 makes the installation and replacement of the anti-erosion component 4 easier. When it is necessary to replace the anti-erosion component 4, it can be quickly removed from the positioning groove 202 and a new component can be installed.

[0098] In some embodiments, the positioning portions 401 are multiple and are evenly arranged along the circumference of the erosion-resistant member 4.

[0099] Multiple positioning parts 401 are evenly arranged around the circumference of the anti-erosion component 4, ensuring that the anti-erosion component 4 is subjected to uniform force throughout the entire circumference, avoiding damage caused by localized stress concentration. The evenly distributed positioning parts 401 provide more support points, thereby improving the stability of the anti-erosion component 4 within the bushing 2 and helping to prevent displacement or detachment of the anti-erosion component 4 under high pressure and high temperature environments. The arrangement of multiple positioning parts 401 makes the installation and replacement of the anti-erosion component 4 easier; when it needs to be replaced, it can be quickly removed from the positioning groove 202 and a new component installed.

[0100] In some embodiments, the positioning portion 401 is configured as an annular flange formed on the outer periphery of the erosion-resistant member 4. For example... Figure 8 As shown, the annular flange makes it easier to position, install, and replace the anti-erosion component 4. When the anti-erosion component 4 needs to be replaced, it can be quickly removed from the positioning groove 202 and a new anti-erosion component 4 can be installed.

[0101] In some embodiments, the positioning part 401 is connected to the bushing 2 by fasteners. For example, the fasteners are screws or bolts. The positioning part 401 connected by fasteners can be easily disassembled and replaced, facilitating maintenance and repair. When it is necessary to replace the erosion-resistant component 4, the positioning part 401 can be removed simply by loosening the fasteners, making the installation process of the erosion-resistant component 4 simpler.

[0102] In some embodiments, the erosion-resistant component 4 is plate-shaped or block-shaped. The plate-shaped or block-shaped erosion-resistant component 4 has a simple geometry, which makes it easy to install and manufacture, and also helps reduce manufacturing costs. Installation of the plate-shaped or block-shaped component is generally simple, and it can be fixed to the bushing 2 by fasteners, welding, or other connection methods. When the erosion-resistant component 4 wears or is damaged, the plate-shaped or block-shaped arrangement simplifies the replacement process, allowing maintenance personnel to quickly remove the damaged component and install a new one.

[0103] In some embodiments, the erosion-resistant component 4 is configured as an erosion-resistant material layer formed on the inner wall of the bushing 2.

[0104] like Figure 10 As shown, the erosion-resistant material layer has a low coefficient of thermal expansion, which can reduce thermal stress caused by temperature changes and help reduce deformation and damage to bushing 2. The manufacturing of the erosion-resistant coating is usually relatively simple and can be achieved through spraying, electroplating, or other surface treatment techniques. This simple application method helps to reduce manufacturing costs.

[0105] The die-casting equipment 1000 of this disclosure includes the pressure chamber 100 of any of the above embodiments.

[0106] In some embodiments, the die-casting apparatus 1000 of this disclosure further includes a mold and a punch 6, the punch 6 being movably fitted within an injection chamber 101. The movement of the punch 6 can control the flow of molten metal within the injection chamber 101, ensuring that the molten metal can uniformly fill the mold, thereby improving the molding quality of the product. The movement of the punch 6 can accelerate the molten metal filling process, improving production efficiency.

[0107] In some embodiments, the feed hole 3 is located at one end of the injection chamber 101 near the punch 6. Positioning the feed hole 3 near the punch 6 optimizes the flow path of the high-temperature molten metal, reduces flow resistance, and facilitates rapid and uniform filling of the mold by the high-temperature molten metal. Furthermore, the proximity of the feed hole 3 to the punch 6 reduces splashing of the molten metal upon entering the injection chamber 101, improving production safety.

[0108] In some embodiments, a steel ring 7 is provided at one end of the punch 6 that fits into the injection chamber 101. Since the steel ring 7 needs to be polished and adapted each time the bushing 2 is replaced, the structure of the bushing 2 and the anti-erosion component 4 in this embodiment results in a longer service life for the bushing 2 and the anti-erosion component 4, eliminating the need for frequent replacements. This also extends the service life of the steel ring 7 to some extent, which helps to save costs.

[0109] The steel ring 7 provides additional sealing performance, preventing high-temperature molten metal from leaking from the interface between the punch 6 and the injection chamber 101 under high pressure. The steel ring 7 also serves as a structural support, enhancing the stability of the interface between the punch 6 and the injection chamber 101 and preventing deformation caused by high temperature and high pressure.

[0110] The pressure chamber 100 of this embodiment includes a pressure chamber body 1 and a bushing 2. The pressure chamber body 1 has an injection cavity 101. The bushing 2 is detachably disposed in the pressure chamber body 1. The injection cavity 101 has a feed hole 3 that penetrates the pressure chamber body 1 and the bushing 2. The bushing 2 has an anti-erosion component 4 that is opposite to the feed hole 3.

[0111] In the die casting production process, the pressure chamber 100 of this embodiment of the present disclosure allows the molten material (such as high-temperature aluminum alloy melt) to enter the bushing 2 through the feed hole 3, and then enter the injection chamber 101 through the bushing 2. The injection chamber 101 is used to store the molten material and inject it into the die casting mold to produce die casting products.

[0112] Because the bushing 2 has an anti-erosion component 4 opposite to the feed hole 3, when the molten metal enters the bushing 2 through the feed hole 3, it first washes against the anti-erosion component 4. The anti-erosion component 4 can significantly improve the resistance of the erosion zone to high-temperature molten metal, reduce the wear on the inner wall of the bushing 2 caused by the erosion of high-temperature molten metal, effectively extend the service life of the bushing 2, reduce the replacement frequency, and thus effectively extend the service life of the bushing 2, thereby reducing maintenance and production costs. At the same time, it can also reduce the downtime caused by replacing the bushing 2, which helps to improve the efficiency of the entire die-casting production line. The bushing 2 is detachably installed in the pressure chamber body 1. When the bushing 2 is worn or damaged, it can be easily removed from the pressure chamber body 1 and replaced with a new bushing 2, which helps to reduce maintenance costs and downtime.

[0113] In some embodiments, the anti-erosion component 4 is configured as an anti-erosion material layer formed on the inner wall portion of the bushing 2 opposite to the feed hole 3.

[0114] like Figure 10 As shown, the erosion-resistant material layer typically has a low coefficient of thermal expansion, which reduces thermal stress caused by temperature changes and helps reduce deformation and damage to bushing 2. The application of erosion-resistant coatings is generally simple and can be achieved through spraying, electroplating, or other surface treatment techniques. This ease of application helps reduce manufacturing costs.

[0115] In some embodiments, the inner wall of the bushing 2 is provided with a through hole 201, and the anti-erosion component 4 is constructed as an anti-erosion block or anti-erosion plate embedded in the through hole 201.

[0116] like Figures 6 to 9 As shown, erosion-resistant blocks or plates typically have simple geometries, which makes the erosion-resistant component 4 easy to install and manufacture, and also helps reduce manufacturing costs. Installation of the erosion-resistant blocks or plates is generally simple, and they can be fixed to the bushing 2 by fasteners, welding, or other connection methods. When the erosion-resistant component 4 wears or is damaged, the arrangement of the erosion-resistant blocks or plates simplifies the replacement process, allowing maintenance personnel to quickly remove the damaged component and install a new one.

[0117] In some embodiments, the pressure chamber body 1 is a mold steel body, the bushing 2 is a mold steel sleeve, and the erosion-resistant component 4 is a tungsten steel alloy component.

[0118] Mold steel has high hardness, wear resistance and good high temperature resistance, making it suitable for manufacturing the pressure chamber body 1 and bushing 2, as they need to withstand high pressure and high temperature molten metal. These properties of mold steel help to improve the structural strength and service life of the pressure chamber 100.

[0119] Tungsten carbide alloy is a very hard and wear-resistant material with excellent erosion resistance. During the die casting process, the flow of high-temperature molten metal will cause severe impact and wear on the inside of the pressure chamber 100. The erosion-resistant component 4 of tungsten carbide alloy can effectively resist these impacts and wear, protecting the bushing 2 and the pressure chamber body 1 from damage.

[0120] The combination of mold steel and tungsten carbide alloy can be optimized according to the functional requirements of different components. Mold steel provides the stability and durability of the overall structure, while tungsten carbide alloy provides erosion resistance, thus achieving a balanced material combination.

[0121] The pressure chamber 100 of this embodiment includes a pressure chamber body 1, a bushing 2, and a feed hole 3. The bushing 2 is disposed inside the pressure chamber body 1, and the feed hole 3 penetrates the pressure chamber body 1 and the bushing 2. The bushing 2 has higher erosion resistance than the pressure chamber body 1. For example, the bushing 2 is entirely made of a material with high erosion resistance.

[0122] Because the erosion resistance of bushing 2 is higher than that of the pressure chamber body 1, when high-temperature molten metal enters the bushing 2 through the feed hole 3, the bushing 2 can withstand the erosion of the molten metal, reducing wear and tear and significantly extending its service life. This, in turn, greatly improves the service life of the pressure chamber 100. Simultaneously, the extended service life of bushing 2 reduces the frequency of replacement, thus lowering maintenance and replacement costs. Furthermore, reducing downtime due to bushing 2 replacement also helps improve the efficiency of the entire die-casting production line.

[0123] In some embodiments, the pressure chamber body 1 has a first end 102 and a second end 103 along its axial direction, the feed hole 3 is disposed adjacent to the first end 102, and the inner wall of the pressure chamber body 1 is provided with a mounting groove 104 extending from the first end 102 toward the second end 103, and the bushing 2 is detachably disposed in the mounting groove 104.

[0124] like Figure 2 and Figure 3 As shown, the mounting slot 104 provides a fixed position for the bushing 2 and also facilitates its replacement. Because the bushing 2 is removable, maintenance personnel can quickly inspect and replace it without a complex disassembly process. When the bushing 2 needs replacement, since only the bushing 2 needs to be replaced, downtime for the entire die-casting system can be reduced. Quick replacement of the bushing 2 reduces production interruptions, thereby improving the overall efficiency of the production line. If necessary, different types of bushings 2 can be replaced according to different die-casting requirements to accommodate different materials and process requirements.

[0125] In some embodiments, the pressure chamber body 1 is a mold steel body, and the bushing 2 is a tungsten steel alloy sleeve.

[0126] Mold steel, with its high hardness, wear resistance, and excellent high-temperature resistance, is suitable for manufacturing the pressure chamber body 1. This is because the pressure chamber body 1 needs to withstand the high pressure and high temperature of molten metal, and these properties of mold steel help improve the structural strength and service life of the pressure chamber 100. Tungsten carbide alloy, on the other hand, is a very hard and wear-resistant material with excellent erosion resistance. During the die-casting process, the flow of high-temperature molten metal will cause severe impact and wear on the interior of the bushing 2. The tungsten carbide alloy bushing 2 can effectively resist these impacts and wear, protecting the pressure chamber body 1 from damage. The combination of mold steel and tungsten carbide alloy can be optimized according to the functional requirements of different components. Mold steel provides overall structural stability and durability, while tungsten carbide alloy provides erosion resistance, thus achieving a balanced material combination.

[0127] The pressure chamber 100 of this embodiment includes a pressure chamber body 1, which has an injection cavity 101 and a feed hole 3 communicating with the injection cavity 101. An anti-erosion component 4 is provided on the inner wall of the pressure chamber body 1, which is opposite to the feed hole 3.

[0128] like Figure 4 and Figure 5 As shown, since the anti-erosion component 4 can withstand the scouring of high-temperature molten metal, the high-temperature molten metal can directly scour the anti-erosion component 4 through the feed hole 3, thereby reducing the scouring and wear of the pressure chamber body 1 by the high-temperature molten metal, and thus significantly improving the service life of the pressure chamber body 1. At the same time, it can reduce the frequency of replacing the pressure chamber body 1, thus reducing maintenance and replacement costs. In addition, reducing the downtime due to replacing the pressure chamber body 1 also helps to improve the efficiency of the entire die-casting production line.

[0129] In some embodiments, the anti-erosion component 4 is constructed as a tungsten carbide alloy material layer formed on the inner wall surface of the pressure chamber body 1 or a tungsten carbide alloy plate embedded in the inner wall surface of the pressure chamber body 1.

[0130] like Figure 4 As shown, the erosion-resistant component 4 is constructed as a tungsten carbide alloy layer formed on the inner wall surface of the pressure chamber body 1. The tungsten carbide alloy coating typically has a low coefficient of thermal expansion, which can reduce thermal stress caused by temperature changes and help reduce deformation and damage to the pressure chamber body 1. The application of the tungsten carbide alloy coating is usually relatively simple and can be achieved through spraying, electroplating, or other surface treatment techniques. This simple application method helps to reduce manufacturing costs.

[0131] like Figure 5 As shown, the anti-erosion component 4 is constructed as a tungsten carbide alloy plate embedded in the inner wall of the pressure chamber body 1. Tungsten carbide alloy plates can provide more robust protection because they typically have higher thickness and strength. These plates can be embedded in the inner wall of the pressure chamber body 1 to withstand the impact and abrasion of high-temperature molten metal.

[0132] In the description of this disclosure, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this disclosure and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0133] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this disclosure, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0134] In this disclosure, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0135] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0136] In this disclosure, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0137] Although embodiments of the present disclosure have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present disclosure.

Claims

1. A pressure chamber, characterized in that, include: The pressure chamber body (1), bushing (2) and feed hole (3) are provided. The bushing (2) is provided on the inner wall of the pressure chamber body (1) located at the feed hole (3). The pressure chamber body (1) has an injection chamber (101). The feed hole (3) penetrates the pressure chamber body (1) and the bushing (2) and communicates with the injection chamber (101) so that the liquid material is poured into the injection chamber (101) through the feed hole (3). The injection chamber (101) is provided with an anti-erosion component (4) at the erosion zone. The erosion zone is the landing area of ​​the liquid material in the injection chamber (101) through the feed hole (3).

2. The pressure chamber according to claim 1, characterized in that, The bushing (2) is arranged around the inner wall of the injection chamber (101), and the area of ​​the bushing (2) includes at least the annular inner wall portion of the pressure chamber body (1) where the feed hole (3) is located.

3. The pressure chamber according to claim 2, characterized in that, The annular area at least covers the area touched by the liquid material as it is poured into the injection chamber (101) through the feed hole (3).

4. The pressure chamber according to claim 1 or 2, characterized in that, The bushing (2) has a through hole (201) in the erosion area, and the anti-erosion component (4) is embedded in the through hole (201).

5. The pressure chamber according to claim 4, characterized in that, The erosion-resistant component (4) and the bushing (2) have a splice gap for accommodating thermal expansion and sealing.

6. The pressure chamber according to claim 5, characterized in that, The splicing gap size between the anti-erosion component (4) and the bushing (2) is sufficient to accommodate the thermal expansion of the anti-erosion component (4) and the bushing (2) under the high temperature state of the liquid.

7. The pressure chamber according to claim 5, characterized in that, The splicing gap size between the anti-erosion component (4) and the bushing (2) meets the sealing requirements of the injection chamber (101) for the liquid material.

8. The pressure chamber according to claim 5, characterized in that, The erosion-resistant component (4) and the bushing (2) are fixed at the splice seam.

9. The pressure chamber according to claim 8, characterized in that, The erosion-resistant component (4) and the bushing (2) are welded and fixed on the outside of the bushing (2) away from the feed hole (3).

10. The pressure chamber according to claim 1, characterized in that, The thickness of the erosion-resistant component (4) is approximately the same as the thickness of the bushing (2).

11. The pressure chamber according to claim 1, characterized in that, The erosion-resistant component (4) has a higher erosion resistance to the liquid than either the bushing (2) or the pressure chamber body (1).

12. The pressure chamber according to claim 11, characterized in that, The erosion-resistant component (4) is a tungsten carbide alloy component.

13. The pressure chamber according to claim 12, characterized in that, The pressure chamber body (1) is a mold steel body, and the bushing (2) is a mold steel sleeve.

14. The pressure chamber according to claim 1, characterized in that, The pressure chamber body (1) has a first end (102) and a second end (103) along its axial direction. The feed hole (3) is disposed adjacent to the first end (102). The inner wall of the pressure chamber body (1) is provided with a mounting groove (104) extending from the first end (102) toward the second end (103). The bushing (2) is detachably disposed in the mounting groove (104).

15. The pressure chamber according to claim 14, characterized in that, It also includes a pressure plate (5), which is connected to the first end (102) of the pressure chamber body (1) to fix the bushing (2).

16. The pressure chamber according to claim 1, characterized in that, The central axis of the feed hole (3) passes approximately through the center of the anti-erosion component (4).

17. The pressure chamber according to claim 1, characterized in that, The feed hole (3) has an outer port and an inner port along its axial direction, and the inner port is directly opposite the anti-erosion component (4) in the radial direction of the injection cavity (101).

18. The pressure chamber according to claim 1, characterized in that, The feed hole (3) has an outer port and an inner port along its axial direction. In the projection plane orthogonal to the opening direction of the inner port, the outer periphery of the inner port coincides with or is located within the outer periphery of the anti-erosion component (4).

19. The pressure chamber according to claim 18, characterized in that, The distance between the outer periphery of the inner port and the outer periphery of the anti-erosion component (4) is less than 20 mm.

20. The pressure chamber according to claim 18, characterized in that, Within the cross-section of the bushing (2), the distance between the line connecting the two ends of the anti-erosion component (4) and the center of the anti-erosion component (4) is less than half the radius of the bushing (2) and greater than one-quarter of the radius of the bushing (2).

21. The pressure chamber according to claim 1, characterized in that, The pressure chamber body (1) is provided with an air extraction hole (105) that communicates with the injection chamber (101).

22. The pressure chamber according to claim 1, characterized in that, The bushing (2) has a positioning groove (202) on its outer wall surface, and the anti-erosion component (4) has a positioning part (401) on its outer periphery, and the positioning part (401) fits into the positioning groove (202).

23. The pressure chamber according to claim 22, characterized in that, The positioning part (401) is multiple and is evenly arranged along the circumference of the anti-erosion component (4).

24. The pressure chamber according to claim 22, characterized in that, The positioning part (401) is constructed as an annular flange formed on the outer periphery of the erosion-resistant component (4).

25. The pressure chamber according to claim 23, characterized in that, The positioning part (401) is connected to the bushing (2) by fasteners.

26. The pressure chamber according to claim 1, characterized in that, The erosion-resistant component (4) is plate-shaped or block-shaped.

27. The pressure chamber according to claim 1, characterized in that, The erosion-resistant component (4) is constructed as an erosion-resistant material layer formed on the inner wall of the bushing (2).

28. A die-casting equipment, characterized in that, Includes a pressure chamber according to any one of claims 1-27.

29. The die-casting equipment according to claim 28, characterized in that, It also includes a mold and a punch (6), which is movably fitted within the injection cavity (101).

30. The die-casting equipment according to claim 29, characterized in that, The feed hole (3) is located at one end of the injection chamber (101) near the punch (6).

31. The die-casting equipment according to claim 29, characterized in that, The punch (6) is fitted with a steel ring (7) at one end inside the injection chamber (101).

32. A pressure chamber, characterized in that, include: The pressure chamber body (1) and the bushing (2) are provided. The pressure chamber body (1) has an injection cavity (101). The bushing (2) is detachably disposed in the pressure chamber body (1). The injection cavity (101) has a feed hole (3) that penetrates the pressure chamber body (1) and the bushing (2). The bushing (2) has an anti-erosion component (4) opposite to the feed hole (3).

33. The pressure chamber according to claim 32, characterized in that, The erosion-resistant component (4) is constructed as an erosion-resistant material layer formed on the inner wall portion of the bushing (2) opposite to the feed hole (3).

34. The pressure chamber according to claim 33, characterized in that, The bushing (2) has a through hole (201) on its inner wall, and the anti-erosion component (4) is constructed as an anti-erosion block or anti-erosion plate embedded in the through hole (201).

35. The pressure chamber according to claim 32, characterized in that, The pressure chamber body (1) is a mold steel body, the bushing (2) is a mold steel sleeve, and the erosion-resistant component (4) is a tungsten steel alloy component.

36. A pressure chamber, characterized in that, include: The pressure chamber body (1), bushing (2) and feed hole (3) are provided inside the pressure chamber body (1), and the feed hole (3) penetrates the pressure chamber body (1) and the bushing (2). The bushing (2) has higher erosion resistance than the pressure chamber body (1).

37. The pressure chamber according to claim 36, characterized in that, The pressure chamber body (1) has a first end (102) and a second end (103) along its axial direction. The feed hole (3) is disposed adjacent to the first end (102). The inner wall of the pressure chamber body (1) is provided with a mounting groove (104) extending from the first end (102) toward the second end (103). The bushing (2) is detachably disposed in the mounting groove (104).

38. The pressure chamber according to claim 36, characterized in that, The pressure chamber body (1) is a mold steel body, and the bushing (2) is a tungsten steel alloy bushing.

39. A pressure chamber, characterized in that, include: The pressure chamber body (1) has an injection cavity (101) and a feed hole (3) communicating with the injection cavity (101). The inner wall of the pressure chamber body (1) is provided with an anti-erosion component (4) opposite to the feed hole (3).

40. The pressure chamber according to claim 39, characterized in that, The erosion-resistant component (4) is constructed as a tungsten carbide alloy material layer formed on the inner wall surface of the pressure chamber body (1) or a tungsten carbide alloy plate embedded in the inner wall surface of the pressure chamber body (1).

41. A die-casting equipment, characterized in that, Includes the pressure chamber according to any one of claims 32-40.

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