Magnesium alloy melting furnace

Abstract

The utility model discloses a magnesium alloy melting furnace relates to smelting furnace field, magnesium alloy melting furnace includes melting furnace main part and a plurality of auxiliary heating device, and melting furnace main part includes furnace body and main control heating device, and furnace body has the smelting cavity for accommodating magnesium alloy solution, and auxiliary heating device includes heat conduction casing and heating wire subassembly, and heating wire subassembly is located in heat conduction casing, and heat conduction casing is detachably connected with furnace body and is heat -insulated and is sealed and sets up, and heat conduction casing can stretch into smelting cavity along the up and down direction, so that heat conduction casing is at least partially soaked in magnesium alloy solution, auxiliary heating device is electrically connected with main control heating device, and main control heating device can control auxiliary heating device operation when main control temperature is less than set temperature. The utility model can improve the smelting speed to magnesium alloy, promote the melting rate, satisfy the demand of automobile accessory manufacturing to magnesium alloy.

Description

Technical Field

[0001] This utility model relates to the field of melting furnace technology, and in particular to a magnesium alloy melting furnace. Background Technology

[0002] The application of magnesium alloys in automotive parts mainly revolves around core requirements such as lightweighting, energy conservation and environmental protection, and performance optimization, while also involving material modification, manufacturing process innovation, and industry trend advancements. In automotive parts manufacturing, magnesium alloys need to be melted using smelting equipment. Existing magnesium alloy melting furnaces typically have a melting rate of 200 kg / hour. However, with technological advancements, the size and weight of automotive parts being designed and developed are increasing, necessitating a target production capacity of 230 kg / hour. Currently used magnesium alloy melting furnaces have low melting rates, failing to meet the current demand for magnesium alloys in automotive parts manufacturing, thus impacting manufacturing efficiency. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a magnesium alloy melting furnace that can increase the melting speed of magnesium alloys, thereby improving the melting rate and meeting the demand for magnesium alloys in automotive parts manufacturing.

[0004] This utility model provides a magnesium alloy melting furnace, which includes a furnace body, a furnace shell, and a main control heating device. The furnace body has a melting chamber for containing magnesium alloy solution. The magnesium alloy melting furnace also includes several auxiliary heating devices, each of which includes a heat-conducting shell and a heating wire assembly. The heating wire assembly is disposed within the heat-conducting shell, which is detachably connected to the furnace body and is heat-insulated and sealed. The heat-conducting shell is configured to extend vertically into the melting chamber so that it is at least partially immersed in the magnesium alloy solution. The auxiliary heating devices are electrically connected to the main control heating device, which is configured to control the operation of the auxiliary heating devices when the main control temperature is lower than a set temperature.

[0005] The magnesium alloy melting furnace according to the embodiments of this utility model has at least the following beneficial effects: When producing large-volume and large-weight automotive parts, the auxiliary heating device is used in conjunction with the existing melting furnace body to connect the auxiliary heating device with the main control heating device. When the main control temperature is lower than the set temperature, the auxiliary heating device is started to provide more heat, which increases the melting speed of the magnesium alloy raw materials in the melting chamber and makes the temperature of the magnesium alloy solution rise faster, thereby improving the melting rate of the magnesium alloy melting furnace to meet the production capacity requirements of automotive parts for magnesium alloys.

[0006] In some embodiments of this utility model, the heat-conducting housing includes a sleeve assembly and a flange block. The sleeve assembly extends in the vertical direction, and the flange block is fixedly disposed at one end of the sleeve assembly and is detachably connected to the furnace body and heat-insulated and sealed. The heating wire assembly extends in the vertical direction, with one end disposed inside the sleeve assembly and the other end passing through the flange block and extending outside the sleeve assembly. The heating wire assembly is heat-conducting with the sleeve assembly and heat-insulating with the flange block.

[0007] In some embodiments of this utility model, the auxiliary heating device further includes a protective cover, and a terminal block is provided at one end of the heating wire assembly extending to the sleeve assembly. The protective cover is detachably connected to the flange block to form a protective cavity for protecting the terminal block.

[0008] In some embodiments of this utility model, the protective cover is provided with a plurality of heat dissipation holes.

[0009] In some embodiments of this utility model, the heat dissipation holes are circular holes and arranged in a matrix.

[0010] In some embodiments of this utility model, the sleeve assembly includes an inner sleeve and an outer sleeve, the outer sleeve is sleeved on the inner sleeve, the inner sleeve is sleeved on the heating wire assembly, and the outer sleeve and the inner sleeve are fixedly connected to the flange block.

[0011] In some embodiments of this utility model, the upper end of the flange block is provided with a handle and lifting bolts.

[0012] In some embodiments of this utility model, the heating wire assembly includes a heating wire, a support block, and a fire-resistant insulation cotton component. Multiple support blocks are provided and spaced apart along the vertical direction. The heating wire extends vertically and is serpentine in shape. The heating wire is fixedly connected to the multiple support blocks, which are located within the sleeve assembly. The support block closest to the flange block is detachably connected to the flange block. The fire-resistant insulation cotton component is located between the flange block and the adjacent support block.

[0013] In some embodiments of this utility model, the heating wire is an iron-chromium-aluminum alloy component, and the support block is an alumina ceramic component.

[0014] In some embodiments of this utility model, the main control heating device includes a main heating component, a temperature controller, and a power regulator. The temperature controller is electrically connected to the power regulator and is configured to monitor the temperature of the melting chamber. The power regulator is electrically connected to both the main heating component and the heating wire assembly and is configured to adjust the power of both the main heating component and the heating wire assembly.

[0015] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention may be realized and obtained by means of the structures particularly pointed out in the description, claims, and drawings. Attached Figure Description

[0016] Figure 1 This is a simplified structural diagram of a magnesium alloy melting furnace provided according to an embodiment of the present utility model; Figure 2 This is a schematic diagram showing the electrical connection between the main control heating device and the heating wire assembly in a magnesium alloy melting furnace according to an embodiment of the present invention. Figure 3 This is a simplified structural diagram of the auxiliary heating device in the magnesium alloy melting furnace provided according to an embodiment of the present utility model; Figure 4 This is a simplified structural diagram of the heating wire assembly in a magnesium alloy melting furnace according to an embodiment of the present invention.

[0017] Reference numerals: 100, auxiliary heating device; 110, heat-conducting shell; 111, inner sleeve; 112, outer sleeve; 113, flange block; 120, heating wire assembly; 121, heating wire; 122, support block; 123, refractory insulation cotton; 124, terminal block; 130, protective cover; 131, heat dissipation hole; 132, wiring hole; 140, handle; 200, furnace body; 210, melting chamber; 300, magnesium alloy solution. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0019] In the description of this utility model, it should be understood that features specified as "first" or "second" may explicitly or implicitly include one or more of those features. In the description of this utility model, unless otherwise stated, "multiple" means two or more.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] The following is for reference. Figures 1 to 4 This invention describes a magnesium alloy melting furnace provided according to an embodiment of the present invention.

[0022] like Figures 1 to 4 As shown, the magnesium alloy melting furnace according to the present invention can be used in magnesium alloy smelting to provide magnesium alloy materials required in the manufacturing of automotive parts.

[0023] The magnesium alloy melting furnace in this embodiment can increase the melting speed of magnesium alloys, thereby improving its own melting rate, meeting the current production capacity requirements of magnesium alloys for automotive parts manufacturing, and helping to ensure high manufacturing efficiency of automotive parts.

[0024] like Figures 1 to 4 As shown, the magnesium alloy melting furnace comprises a main furnace body and several auxiliary heating devices 100. The main furnace body includes a furnace body 200 and a main control heating device. The furnace body 200 has a melting chamber 210 for containing molten magnesium alloy 300. The main control heating device is configured to heat the melting chamber 210 and the magnesium alloy within it to melt the magnesium alloy, and to detect the temperature of the melting chamber 210 to obtain real-time temperature data. It can also adjust its own heating power.

[0025] It is understood that the main heating control device includes a main heating element, a temperature controller, and a power regulator. The temperature controller is electrically connected to the power regulator and is configured to monitor the temperature of the melting chamber 210 to obtain the temperature status of the magnesium alloy during melting. The power regulator is electrically connected to the main heating element and is configured to adjust the power of the main heating element. For example, the main heating element can employ existing induction heating technology, generating eddy currents in the magnesium alloy through an alternating magnetic field to achieve efficient heating. The furnace body 200 and the main heating control device are prior art, and those skilled in the art should clearly understand their specific structure and working principle; therefore, they will not be described in detail here.

[0026] The auxiliary heating device 100 includes a heat-conducting housing 110 and a heating wire assembly 120. The heating wire assembly 120 is disposed within the heat-conducting housing 110. The heating wire assembly 120 can be in contact with the inner wall of the heat-conducting housing 110, or there can be a gap between them. The heating wire assembly 120 and the heat-conducting housing 110 are thermally conductively connected, allowing the heat generated by the heating wire assembly 120 when energized to be transferred outwards through the heat-conducting housing 110. The heat-conducting housing 110 and the furnace body 200 can be detachably connected by bolts. Furthermore, a thermally sealed insulation is provided between the heat-conducting housing 110 and the furnace body 200, for example, through sealing rings and insulation cotton, to prevent external gases from entering the melting chamber 210 and affecting the melting of the magnesium alloy. This also prevents heat from easily leaking from the melting chamber 210 through the gap between the heat-conducting housing 110 and the furnace body 200, thus preventing increased heat loss.

[0027] The upper end of the heat-conducting shell 110 is fixedly connected to the furnace body 200. The heat-conducting shell 110 is configured to extend vertically into the melting chamber 210, so that it is at least partially immersed in the magnesium alloy molten metal 300. This allows the heat-conducting shell 110 to transfer the heat generated by the heating wire assembly 120 to the magnesium alloy molten metal 300. It is understood that the heat-conducting shell 110 separates the magnesium alloy molten metal 300 from the heating wire assembly 120, preventing the heating effect of the heating wire assembly 120 from being reduced due to residue remaining on it during the magnesium alloy melting process, thus avoiding the need for frequent maintenance of the heating wire assembly 120.

[0028] The auxiliary heating device 100 is electrically connected to the main heating device, enabling electrical signal transmission. The main heating device is configured to control the operation of the auxiliary heating device 100 when the main control temperature is lower than the set temperature. In this embodiment, the power regulator is also electrically connected to the heating wire assembly 120, and is configured to adjust the power of the heating wire assembly 120. It is understood that when the main heating assembly is running at full power, if the main control temperature collected by the temperature controller has not yet reached the set temperature, the auxiliary heating device 100 is activated to work in conjunction with the main heating assembly. The heating power of the heating wire assembly 120 is adjusted according to the specific situation, allowing the heating wire assembly 120 to generate a certain amount of heat energy, which is then transferred to the melting chamber 210 through the heat-conducting shell 110, causing the magnesium alloy to heat up faster and thus accelerating the melting speed of the magnesium alloy.

[0029] In the use of the magnesium alloy melting furnace provided in this embodiment of the present invention, when manufacturing some automotive parts with large volume and mass, the amount of magnesium alloy raw material placed in the melting furnace body increases. If only the heat generated by the main heating component is relied upon, the melting speed of the magnesium alloy will decrease, which will not meet the production capacity requirements. Therefore, in this embodiment, an auxiliary heating device 100 is used in conjunction with the existing melting furnace body to connect the auxiliary heating device 100 with the main control heating device. When the main control temperature obtained by the temperature controller is lower than the set temperature set by the user, the auxiliary heating device 100 is started to allow the heating wire assembly 120 to provide more heat and transfer it to the melting chamber 210, thereby increasing the melting speed of the magnesium alloy raw material in the melting chamber 210 and causing the temperature of the magnesium alloy solution 300 to rise faster. This can improve the melting rate of the magnesium alloy melting furnace and ultimately meet the production capacity requirements of automotive parts for magnesium alloy.

[0030] When manufacturing small automotive parts, the heat provided by the main heating unit is sufficient to handle the melting of magnesium alloys, ensuring that the capacity of the magnesium alloy melting furnace meets the requirements. In this case, there is no need to start the auxiliary heating device 100, thus avoiding increased energy consumption.

[0031] In some embodiments, such as Figure 1 , Figure 3 and Figure 4 As shown, the heat-conducting housing 110 includes a sleeve assembly and a flange block 113. The sleeve assembly extends vertically, and the flange block 113 is fixedly mounted on one end of the sleeve assembly. The flange block 113 is detachably connected to the furnace body 200 via bolts, and a heat-insulating seal is used between the flange block 113 and the furnace body 200. In this embodiment, the flange block 113 is welded integrally with the sleeve assembly, and the flange block 113 is located outside the melting chamber 210.

[0032] The heating wire assembly 120 extends vertically, with one end housed within the sleeve assembly and the other end passing through the flange block 113 and extending beyond the sleeve assembly for electrical connection to the mains power. A thermally conductive space is provided between the heating wire assembly 120 and the sleeve assembly, and a thermally insulated space is provided between the heating wire assembly 120 and the flange block 113 to prevent heat generated by the heating wire assembly 120 from leaking out through the gap between them.

[0033] Specifically, such as Figure 4As shown, the sleeve assembly includes an inner sleeve 111 and an outer sleeve 112. The outer sleeve 112 is fitted onto the inner sleeve 111, and there is a gap between the inner wall surface of the outer sleeve 112 and the outer peripheral surface of the inner sleeve 111. The inner sleeve 111 is fitted onto the heating wire assembly 120, and there is a gap between the heating wire assembly 120 and the inner wall surface of the inner sleeve 111. Furthermore, one end of the outer sleeve 112 and one end of the inner sleeve 111 are fixedly connected to a flange block 113. In this embodiment, the cross-sectional shape of the outer sleeve 112 and the inner sleeve 111 are circular, and the outer sleeve 112, inner sleeve 111, heating wire assembly 120, and flange block 113 are coaxially arranged. The outer sleeve 112 and inner sleeve 111 are made of high-temperature resistant materials such as stainless steel.

[0034] Furthermore, the upper end of the flange block 113 is provided with handles 140 and lifting bolts. It is understood that there are two handles 140, located on opposite sides of the flange block 113, allowing workers to easily move the heat-conducting housing 110 upwards by holding the handles 140. Multiple lifting bolts are provided to facilitate the lifting of the auxiliary heating device 100, enabling its disassembly and installation.

[0035] Specifically, such as Figure 4 As shown, the heating wire assembly 120 includes a heating wire 121, support blocks 122, and refractory insulation cotton 123. Multiple support blocks 122 are provided, and these blocks are arranged at certain intervals along the vertical direction. The heating wire 121 extends vertically and is serpentine in shape, forming a circuit. Both ends of the heating wire 121 can be connected to mains power, enabling it to operate and generate heat when energized. The heating wire 121 is fixedly connected to the multiple support blocks 122. Specifically, each support block 122 has mounting holes through which the heating wire 121 passes. The arrangement of the support blocks 122 ensures that the serpentine heating wire 121 is spaced apart, preventing short circuits caused by contact.

[0036] Multiple support blocks 122 are disposed within the sleeve assembly. The support block 122 closest to the flange block 113 (i.e., the uppermost support block 122) is detachably connected to the flange block 113. A fire-resistant insulation cotton component 123 is disposed between the flange block 113 and the adjacent support block 122. The fire-resistant insulation cotton component 123 fills the space between the flange block 113 and several adjacent support blocks 122 to achieve a good heat insulation effect and prevent the heat generated by the heating wire 121 from leaking out through the gap between the support block 122 and the flange block 113.

[0037] For example, the heating wire 121 is made of iron-chromium-aluminum alloy, and the support block 122 is made of alumina ceramic. Preferably, the support block 122 is made of white corundum. The power of the heating wire 121 can reach 6.5kW, and the operating voltage of the heating wire 121 is 220V. In this embodiment, the cross-sectional shape of the support block 122 is circular.

[0038] It is understandable that the specific dimensions of the heating wire 121, outer sleeve 112, inner sleeve 111, support block 122, and flange block 113 can be selected according to actual design requirements, and no specific limitation is made here. Since the flange block 113 is fixedly connected to the furnace body 200, for example, installed at the installation through hole designed in the furnace cover of the furnace body 200, the outer sleeve 112 and inner sleeve 111 are inserted into the melting chamber 210. The uppermost support block 122 is detachably connected to the flange block 113. Therefore, when the heating wire assembly 120 needs to be disassembled for maintenance, the connection between the flange block 113 and the corresponding support block 122 can be directly released to remove the heating wire assembly 120 from the inner sleeve 111. Furthermore, if the heating wire assembly 120 malfunctions and needs to be replaced during magnesium alloy melting, the magnesium alloy melting operation will not be affected because the flange block 113 and the furnace body 200 are heat-insulated and sealed. In this case, the operator can disassemble the heating wire assembly 120 and quickly install the new heating wire assembly 120 on the heat-conducting shell 110 without stopping the machine to disassemble and install the heating wire assembly 120, thus ensuring that the magnesium alloy melting operation proceeds normally.

[0039] In some embodiments, such as Figure 1 , Figure 3 and Figure 4 As shown, the auxiliary heating device 100 also includes a protective cover 130. The heating wire assembly 120 extends to one end of the sleeve assembly and is provided with a terminal 124. The terminal 124 can be connected to a cable, allowing mains power to be input to the heating wire assembly 120 via the cable, enabling the heating wire assembly 120 to operate. The protective cover 130 is detachably connected to the flange block 113, so that the protective cover 130 and the flange block 113 together form a protective cavity for protecting the terminal 124. It is understood that the protective cover 130 provides protection for the terminal 124, ensuring a secure connection between the terminal 124 and the cable, preventing short circuits and electric shock accidents, thereby improving the safety of the auxiliary heating device 100.

[0040] Furthermore, such as Figure 3As shown, the protective cover 130 is provided with a plurality of heat dissipation holes 131. Exemplarily, at least one surface of the protective cover 130 is provided with a plurality of heat dissipation holes 131, which are circular holes, and the plurality of heat dissipation holes 131 are arranged in a matrix. The provision of the heat dissipation holes 131 allows heat to be transferred outward from the protective cavity, preventing excessive heat accumulation in the protective cavity from affecting the terminal 124 and the cable connected thereto. In addition, the protective cover 130 is provided with a cable routing hole 132, which can be located on the same surface of the protective cover 130 as the heat dissipation holes 131, and the cable routing hole 132 allows for cable routing design.

[0041] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. 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.

[0042] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A magnesium alloy melting furnace, comprising a furnace body, the furnace body including a furnace frame and a main control heating device, the furnace frame having a melting chamber for containing molten magnesium alloy, characterized in that, It also includes several auxiliary heating devices, each comprising a heat-conducting shell and a heating wire assembly. The heating wire assembly is disposed within the heat-conducting shell, which is detachably connected to the furnace body and is provided with thermal insulation and sealing. The heat-conducting shell is configured to extend vertically into the melting chamber so that at least part of the heat-conducting shell is immersed in the magnesium alloy solution. The auxiliary heating devices are electrically connected to the main control heating device, which is configured to control the operation of the auxiliary heating devices when the main control temperature is lower than the set temperature.

2. The magnesium alloy melting furnace according to claim 1, characterized in that, The heat-conducting housing includes a sleeve assembly and a flange block. The sleeve assembly extends in the vertical direction. The flange block is fixedly disposed at one end of the sleeve assembly and is detachably connected to the furnace body and is heat-insulated and sealed. The heating wire assembly extends in the vertical direction. One end of the heating wire assembly is disposed inside the sleeve assembly, and the other end passes through the flange block and extends to the outside of the sleeve assembly. The heating wire assembly is heat-conducting with the sleeve assembly and heat-insulating with the flange block.

3. The magnesium alloy melting furnace according to claim 2, characterized in that, The auxiliary heating device also includes a protective cover. The heating wire assembly extends to one end of the sleeve assembly and is provided with a terminal post. The protective cover is detachably connected to the flange block to form a protective cavity for protecting the terminal post.

4. The magnesium alloy melting furnace according to claim 3, characterized in that, The protective cover has several heat dissipation holes.

5. The magnesium alloy melting furnace according to claim 4, characterized in that, The heat dissipation holes are round holes and arranged in a matrix.

6. The magnesium alloy melting furnace according to claim 2, characterized in that, The sleeve assembly includes an inner sleeve and an outer sleeve, the outer sleeve is fitted over the inner sleeve, the inner sleeve is fitted over the heating wire assembly, and the outer sleeve and the inner sleeve are fixedly connected to the flange block.

7. The magnesium alloy melting furnace according to claim 2, characterized in that, The flange block is equipped with a handle and lifting bolts at its upper end.

8. The magnesium alloy melting furnace according to claim 2, characterized in that, The heating wire assembly includes a heating wire, support blocks, and refractory insulation cotton. Multiple support blocks are provided and spaced apart in the vertical direction. The heating wire extends in the vertical direction and is serpentine. The heating wire is fixedly connected to the multiple support blocks. The multiple support blocks are located inside the sleeve assembly. The support block closest to the flange block is detachably connected to the flange block. The refractory insulation cotton is located between the flange block and the adjacent support block.

9. The magnesium alloy melting furnace according to claim 8, characterized in that, The heating wire is made of iron-chromium-aluminum alloy, and the support block is made of alumina ceramic.

10. The magnesium alloy melting furnace according to claim 1, characterized in that, The main heating control device includes a main heating component, a temperature controller, and a power regulator. The temperature controller is electrically connected to the power regulator and is configured to monitor the temperature of the melting chamber. The power regulator is electrically connected to both the main heating component and the heating wire assembly and is configured to adjust the power of both components.

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