Aluminum-based composite material, preparation method of aluminum-based composite material, roller for compressor and compressor

Abstract

The invention relates to the technical field of compressors, and discloses an aluminum-based composite material. The aluminum-based composite material comprises aluminum alloy and ceramic particles, wherein the aluminum alloy comprises Al, Mg, Si, Mn and Zn; the aluminum-based composite material comprises, by mass, 43%-63% of Al, 0.5%-2% of Mg, 2%-6% of Si, 0.5%-2% of Mn, 0.5%-2% of Zn and 30%-50% of ceramic particles. The aluminum-based composite material has light weight equal to that of aluminum, tensile strength, Young modulus and thermal expansion coefficient of the aluminum-based composite material are comparable to those of cast iron, and the aluminum-based composite material has high mechanical strength and vibration attenuation. The roller is prepared from the aluminum-based composite material, the vibration of the compressor can be effectively reduced by enhancing the mechanical strength and the wear resistance of the roller and matching with the lightweight design, and the stability and the reliability of the compressor under high-rotating-speed operation are improved. The invention further discloses a preparation method of the aluminum-based composite material, a roller for a compressor and the compressor.

Description

Technical Field

[0001] This application relates to the field of compressor technology, specifically to an aluminum-based composite material, a method for preparing the aluminum-based composite material, a roller for a compressor, and a compressor. Background Technology

[0002] Currently, miniaturization and high speed are the design trends for air conditioning compressors. During compressor operation, rollers mounted on the eccentric circle of the crankshaft rotate with the crankshaft, and the mass of the rollers is a significant part of the eccentric mass. This eccentric mass is one of the fundamental reasons for the large vibrations during high-speed operation of rotary compressors. Therefore, lightweighting the rollers in rotary compressors is crucial for reducing noise in high-speed rotary compressors.

[0003] Related technologies provide a lightweight aluminum alloy composite material, comprising a lubricating phase, a ceramic phase, and the remainder being a matrix alloy; wherein the matrix contains silicon, copper, magnesium, zirconium, iron, and nickel, with the remainder being aluminum; the lubricating phase is molybdenum disulfide, and the ceramic phase is one or a combination of two of zirconium oxide and silicon carbide powder. The lightweight aluminum alloy composite material is wear-resistant and lightweight, and compressor rollers made using this lightweight aluminum alloy composite material have a low specific gravity and low noise.

[0004] In the process of implementing the embodiments of this disclosure, at least the following problems were found in the related art:

[0005] Although the relevant technologies can reduce the mass of the compressor rollers, the mechanical strength of the compressor rollers needs to be improved, and the compressor rollers will still have large vibrations when used in high-speed rotary compressors.

[0006] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0007] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0008] This disclosure provides an aluminum-based composite material, a method for preparing the aluminum-based composite material, a roller for a compressor, and a compressor, to enhance the mechanical strength of the aluminum-based composite material. The roller is made of aluminum-based composite material, thereby reducing the vibration of the compressor.

[0009] According to a first aspect of the present invention, an aluminum-based composite material is provided, comprising an aluminum alloy and ceramic particles, wherein the aluminum alloy comprises Al, Mg, Si, Mn, and Zn; the aluminum-based composite material comprises, by mass percentage: Al 43%–63%, Mg 0.5%–2%, Si 2%–6%, Mn 0.5%–2%, Zn 0.5%–2%, and ceramic particles 30%–50%.

[0010] Optionally, the aluminum-based composite material comprises, by mass percentage: Al 53%, Mg 1%, Si 4%, Mn 1%, Zn 1%, and ceramic particles 40%.

[0011] Optionally, the center diameter of the ceramic particles is greater than or equal to 2 μm and less than or equal to 150 μm.

[0012] Optionally, the center diameter of the ceramic particles is 50 μm.

[0013] Optionally, the ceramic particles include one or both of aluminum borate and silicon carbide.

[0014] Optionally, the ceramic particles also include an inorganic binder, wherein the inorganic binder comprises 2% to 20% by mass in the ceramic particles.

[0015] Optionally, the inorganic binder comprises 10% by mass of the ceramic particles.

[0016] According to a second aspect of the present invention, a method for preparing an aluminum-based composite material is provided. The method is used to prepare an aluminum-based composite material as described in any of the above-disclosed embodiments. The method includes the following steps: pressing ceramic particles into shape, curing them to form an intermediate molded body; impregnating the intermediate molded body with molten aluminum alloy under high pressure, so that the aluminum alloy and ceramic particles are impregnated and composited under high pressure.

[0017] Optionally, the applied pressure during ceramic particle compression molding is greater than or equal to 50 kg / cm². 2 And less than or equal to 300 kg / cm 2 .

[0018] According to a third aspect of the present invention, a roller for a compressor is provided, the roller being made of an aluminum-based composite material as described in any of the above-disclosed embodiments.

[0019] According to a fourth aspect of the present invention, a compressor is provided, including rollers as described in the above-disclosed embodiments.

[0020] Optionally, the compressor is not equipped with a balance block.

[0021] The aluminum-based composite material, the method for preparing the aluminum-based composite material, the roller for the compressor, and the compressor provided in this disclosure can achieve the following technical effects:

[0022] The ceramic particles, comprising 30%–50% by mass, effectively enhance the mechanical strength, wear resistance, and deformation resistance of the aluminum-based composite material. Al, a fundamental element in aluminum alloys, constitutes 43%–63% of the composite material by mass, reducing its overall weight. The combined effects of Al, Mg, Si, Mn, and Zn elements in the aluminum alloy achieve both lightweighting and improved mechanical strength and wear resistance. This aluminum-based composite material exhibits the same lightweight properties as aluminum, while possessing tensile strength, Young's modulus, and thermal expansion coefficient comparable to cast iron, resulting in high mechanical strength and vibration damping. Using this aluminum-based composite material to manufacture rollers, by enhancing their mechanical strength and wear resistance and incorporating a lightweight design, effectively reduces compressor vibration and improves the stability and reliability of the compressor during high-speed operation.

[0023] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0024] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein:

[0025] Figure 1 This is a structural diagram of a conventional compressor provided by existing technology;

[0026] Figure 2 yes Figure 1 An enlarged schematic diagram of part A shown;

[0027] Figure 3 This is a schematic diagram of the structure of a compressor provided in an embodiment of this disclosure;

[0028] Figure 4 yes Figure 3 An enlarged schematic diagram of part B is shown below;

[0029] Figure 5 This is a schematic diagram of the structure of a roller provided in an embodiment of this disclosure;

[0030] Figure 6 This is a schematic diagram of another roller provided in an embodiment of this disclosure.

[0031] Figure label:

[0032] 100: Conventional compressor; 101: Cast iron roller;

[0033] 10: Compressor;

[0034] 20: Roller; 21: Roller body; 22: Center hole;

[0035] 30: Motor rotor;

[0036] 40: Balance weight;

[0037] 50: Crankshaft. Detailed Implementation

[0038] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0039] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0040] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this disclosure according to the specific circumstances.

[0041] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0042] Unless otherwise stated, the term "multiple" means two or more.

[0043] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0044] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0045] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.

[0046] This disclosure provides an aluminum-based composite material comprising an aluminum alloy and ceramic particles. The aluminum alloy comprises Al, Mg, Si, Mn, and Zn. The aluminum-based composite material comprises, by mass percentage: Al 43%–63%, Mg 0.5%–2%, Si 2%–6%, Mn 0.5%–2%, Zn 0.5%–2%, and ceramic particles 30%–50%.

[0047] In the aluminum-based composite material provided in this disclosure, the ceramic particles account for 30% to 50% by mass, effectively improving the mechanical strength, wear resistance, and deformation resistance of the aluminum-based composite material. Al, as a basic element component of the aluminum alloy, accounts for 43% to 63% by mass in the aluminum-based composite material, reducing its mass. The combined effects of aluminum (Al), magnesium (Mg), silicon (Si), manganese (Mn), and zinc (Zn) in the aluminum alloy achieve both lightweighting and improved mechanical strength and wear resistance. This further enhances the mechanical strength and wear resistance of the aluminum-based composite material while maintaining its lightweight nature. The addition of small amounts of Mg, Si, Mn, and Zn plays a crucial role in improving the strength and hardness of the aluminum alloy. Among them, 0.5% to 2% Mg can improve the elastic modulus and hardness of aluminum alloys, 2% to 6% Si and 0.5% to 2% Mn can improve the elastic modulus and wear resistance of aluminum alloys, and 0.5% to 2% Zn, together with Al and Mg, forms a strengthening phase, which can more effectively improve the strength and hardness of aluminum alloys.

[0048] When the Al mass percentage is greater than or equal to 43%, the aluminum matrix composite retains the good processability and low density of aluminum, which is beneficial for reducing the weight of the aluminum matrix composite while improving the material's plasticity and toughness. When the Al mass percentage is less than or equal to 63%, it avoids excessively low stiffness and strength in the aluminum matrix composite. Furthermore, by increasing the proportion of ceramic particles, the stiffness, strength, and wear resistance of the material can be significantly improved, which is highly advantageous for applications requiring high loads and high wear resistance. The embodiments of this disclosure limit the Al mass percentage to 43% to 63%, enabling the aluminum matrix composite to maintain lightweight while possessing good stiffness and strength.

[0049] When the mass percentage of Mg is greater than or equal to 0.5%, a reinforcing phase such as Mg₂Si can be formed, thereby improving the strength and stiffness of the aluminum matrix composite. When the mass percentage of Mg is less than or equal to 2%, excessive hardening of the aluminum matrix composite can be avoided, maintaining a certain degree of plasticity and toughness, which is beneficial for the processing and molding of the aluminum matrix composite. The embodiments of this disclosure limit the mass percentage of Mg to 0.5% to 2%, which can balance strength and plasticity, giving the aluminum matrix composite good comprehensive mechanical properties, while also facilitating processing and heat treatment.

[0050] When the mass percentage of Si is greater than or equal to 2%, Si can form a reinforcing phase in aluminum alloys, improving the strength and hardness of the material, and also enhancing the wear resistance and thermal stability of aluminum-based composites. When the mass percentage of Si is less than or equal to 6%, the coefficient of thermal expansion of the material can be controlled, improving dimensional stability while preventing excessive hardening of the aluminum-based composite and maintaining a certain degree of plasticity. The embodiments of this disclosure limit the mass percentage of Si to 2% to 6%, which can improve the strength and wear resistance of aluminum-based composites while maintaining a certain degree of plasticity, facilitating processing and heat treatment.

[0051] In aluminum alloys, manganese (Mn) can improve the strength and hardness of aluminum matrix composites, while also contributing to improved corrosion resistance. When the mass percentage of Mn is greater than or equal to 0.5%, it can also form a reinforcing phase, further enhancing the strength of the aluminum matrix composite. When the mass percentage of Mn is less than or equal to 2%, the work hardening rate of the aluminum matrix composite can be controlled, maintaining good machinability. The embodiments of this disclosure limit the mass percentage of Mn to 0.5% to 2%, which can improve the strength and corrosion resistance of the material while maintaining a certain degree of plasticity, thus facilitating processing.

[0052] In aluminum alloys, zinc (Zn) can improve the strength and hardness of aluminum matrix composites, while also contributing to improved corrosion resistance. When the mass percentage of Zn is greater than or equal to 0.5%, it can form a reinforcing phase, increasing the strength of the aluminum matrix composite. When the mass percentage of Zn is less than or equal to 2%, it helps maintain the material's plasticity, controls the work hardening rate, and maintains good machinability. The embodiments of this disclosure limit the Zn mass percentage to 0.5% to 2%, which can improve the strength and corrosion resistance of aluminum matrix composites while maintaining a certain level of plasticity, thus facilitating processing.

[0053] When the mass percentage of ceramic particles is greater than or equal to 30%, it can effectively improve the stiffness and strength of aluminum-based composite materials, and enhance their wear resistance and heat resistance. When the mass percentage of ceramic particles is less than or equal to 50%, it can maintain a certain degree of plasticity and toughness in the aluminum-based composite material, avoiding brittleness caused by excessive ceramic particle content, which would affect its processing and use. An appropriate ceramic particle content also helps to balance the cost and performance of the aluminum-based composite material, avoiding a significant increase in material preparation costs due to excessive ceramic content. The embodiments of this disclosure limit the mass percentage of ceramic particles to 30% to 50%, which helps to achieve high strength, high stiffness, and good wear resistance in the aluminum-based composite material, while maintaining a certain degree of plasticity and toughness, which is beneficial for the processing and application of the aluminum-based composite material.

[0054] The combination of aluminum alloy and ceramic particles in aluminum-based composites, with the lightweight nature of aluminum alloy and the high hardness and stiffness of ceramic particles, enables aluminum-based composites to improve their mechanical strength while reducing their weight.

[0055] The roller 20, made from this aluminum-based composite material, achieves both weight reduction and enhanced mechanical strength, thereby effectively mitigating vibration issues in the compressor 10 at high speeds. Under high-speed operation, the high mechanical strength of the roller 20 better resists deformation, thus reducing vibration caused by roller deformation. The weight reduction of the roller 20 also reduces the mass of the eccentric portion of the rotary compressor 10, thereby reducing the excitation force on the eccentric portion and effectively minimizing vibration caused by the eccentric mass, thus improving the operational stability of the compressor 10.

[0056] It is understood that the mass percentage of Al can be 43%, 45%, 50%, 53%, 55%, 60%, or 63%; the mass percentage of Mg can be 0.5%, 0.8%, 1%, 1.2%, 1.5%, 1.8%, or 2%; the mass percentage of Si can be 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, 5%, 5.5%, or 6%; the mass percentage of Mn can be 0.5%, 0.8%, 1%, 1.2%, 1.5%, 1.8%, or 2%; the mass percentage of Zn can be 0.5%, 0.8%, 1%, 1.2%, 1.5%, 1.8%, or 2%; and the mass percentage of ceramic particles can be 30%, 32%, 35%, 38%, 40%, 42%, 45%, 48%, or 50%.

[0057] The aluminum-based composite material provided in this disclosure has the same lightweight properties as aluminum, while its tensile strength, Young's modulus, and thermal expansion coefficient are comparable to cast iron, exhibiting high mechanical strength and vibration damping properties. Rollers 20 are prepared using this aluminum-based composite material. By enhancing the mechanical strength and wear resistance of rollers 20 and incorporating a lightweight design, the vibration of the compressor 10 can be effectively reduced, improving the stability and reliability of the compressor 10 under high-speed operation.

[0058] Optionally, the aluminum-based composite material comprises, by weight percentage: 60% aluminum alloy and 40% ceramic particles.

[0059] In the aluminum-based composite material, the proportion of aluminum alloy is appropriately reduced to 60%, while the proportion of ceramic particles is increased to 40%. The 60% aluminum alloy content maintains the lightweight nature of the aluminum-based composite material. The 40% ceramic particles effectively improve the mechanical strength of the aluminum-based composite material, giving it better load-bearing capacity and resistance to deformation under high loads. Rollers 20 made from this aluminum-based composite material reduce vibration caused by deformation of the rollers 20 during the high-speed operation of the compressor 10.

[0060] Optionally, the aluminum-based composite material comprises, by mass percentage: Al 53%, Mg 1%, Si 4%, Mn 1%, Zn 1%, and ceramic particles 40%.

[0061] This disclosure optimizes the mass percentages of each component in the aluminum-based composite material, resulting in improved mechanical strength and overall performance. In the aluminum alloy, Al accounts for 53% of the mass, ensuring lightweight construction and good thermal conductivity. The addition of 1% Mg, 4% Si, 1% Mn, and 1% Zn plays a crucial role in enhancing the strength and hardness of the aluminum alloy. The 40% ceramic particles improve the strength and stiffness of the aluminum-based composite material while maintaining its lightweight nature. The rollers 20 of this aluminum-based composite material can withstand greater centrifugal force during high-speed operation, reducing vibration and noise caused by material fatigue. This improved mechanical strength of the rollers 20 helps reduce vibration in the high-speed compressor 10.

[0062] The mass of the aluminum-based composite material provided in this embodiment is 1 / 3 that of cast iron. Using the roller 20 made from the aluminum-based composite material provided in this embodiment, the vibration of the high-speed compressor 10 can be reduced to approximately 1 / 6.

[0063] Optionally, the center diameter of the ceramic particles is greater than or equal to 2 μm and less than or equal to 150 μm.

[0064] The ceramic particles are in powder form. The aluminum-based composite material primarily uses ceramic particles with a central particle size greater than or equal to 2 μm and less than or equal to 150 μm. When the central particle size of the ceramic particles is greater than or equal to 2 μm, it can improve the mechanical strength and wear resistance of the aluminum-based composite material. When the central particle size of the ceramic particles is less than or equal to 150 μm, the smaller ceramic particles can improve the thermal stability and toughness of the aluminum-based composite material, and also enable more uniform contact and bonding between particles, contributing to improved uniformity and reliability of the aluminum-based composite material.

[0065] Controlling the center particle size range of the ceramic particles between 2μm and 150μm enables good bonding between the ceramic particles and the aluminum alloy matrix, while avoiding material property inhomogeneity caused by excessively large particle sizes. This helps balance the strength, toughness, and wear resistance of the composite material, while maintaining the material's thermal stability and density. In the application of roller 20, the limited particle size range of the ceramic particles helps reduce vibration caused by material inhomogeneity, improving the durability of roller 20 and the operational stability of the high-speed compressor 10.

[0066] It is understandable that the center particle size of ceramic particles can be 2μm, 5μm, 10μm, 20μm, 50μm, 100μm, 150μm, etc.

[0067] Optionally, the center diameter of the ceramic particles is greater than or equal to 3 μm and less than or equal to 100 μm.

[0068] The central particle size of ceramic particles is limited to the range of 3μm to 100μm, which enables more uniform bonding between ceramic particles and aluminum alloy matrix, helps to improve the overall mechanical strength of aluminum matrix composites, and balances the strength, toughness, wear resistance and processability of aluminum matrix composites.

[0069] Optionally, the center diameter of the ceramic particles is 50 μm.

[0070] The central particle size of the ceramic particles is controlled between 2μm and 150μm. In particular, ceramic particles with a central particle size of 50μm can better bond with the aluminum alloy matrix, providing a better balance of strength and toughness for the aluminum-based composite material. This allows the aluminum-based composite material to maintain high strength while also possessing good impact resistance. The uniform distribution of ceramic particles of this size in the aluminum-based composite material helps improve the wear resistance and fatigue resistance of the roller 20. In the high-speed compressor 10, the roller 20 made using this aluminum-based composite material can effectively reduce vibration caused by eccentric mass, reduce noise, and improve the working efficiency and service life of the compressor 10.

[0071] Alternatively, the ceramic particles may include one or both of aluminum borate and silicon carbide.

[0072] Aluminum borate exhibits excellent thermal stability, maintaining its material properties even at high temperatures. Silicon carbide possesses high hardness and wear resistance, effectively extending its service life. The ceramic particles in the aluminum-based composite material utilize one or both of aluminum borate and silicon carbide, effectively improving the high-temperature stability and wear resistance of the composite. When the roller 20, made from this aluminum-based composite material, is used in the compressor 10, it maintains stable performance even under high speed and high temperature conditions, reducing vibration and noise caused by material wear.

[0073] Optionally, the ceramic particles also include an inorganic binder, wherein the inorganic binder comprises 2% to 20% by mass in the ceramic particles.

[0074] Inorganic binders can fill the gaps between ceramic particles and aluminum alloy matrix, forming a uniform microstructure of composite material and improving the bonding effect between ceramic particles and aluminum alloy matrix.

[0075] When the mass percentage of inorganic binder exceeds 2%, the bonding strength between ceramic particles and the aluminum alloy matrix can be significantly improved. This enhanced bonding strength contributes to improving the overall mechanical strength and wear resistance of aluminum matrix composites. Increasing the content of inorganic binder can improve the dispersion of ceramic particles in the composite material, thereby improving the uniformity and reliability of the aluminum matrix composite. Controlling the mass percentage of inorganic binder below 20% can avoid the material becoming brittle due to excessive binder, maintaining the toughness and plasticity of the composite material. At the same time, a lower binder content also helps reduce the preparation cost of the composite material while ensuring the processing and heat treatment performance of the material. Limiting the mass percentage of inorganic binder in ceramic particles to within the range of 2% to 20% allows inorganic binders to effectively improve the bonding strength between ceramic particles and the aluminum alloy matrix, while avoiding the material performance degradation caused by excessive binder. This helps to balance the strength, toughness, and wear resistance of aluminum matrix composites, while maintaining the processing performance and cost-effectiveness of the material.

[0076] Inorganic adhesives include, but are not limited to, silicate adhesives, phosphate adhesives, borate adhesives, and oxide adhesives.

[0077] It is understandable that the mass percentage of inorganic binders in ceramic particles can be 2%, 5%, 10%, 12%, 15%, 18%, or 20%.

[0078] Optionally, the inorganic binder comprises 5% to 10% by mass of the ceramic particles.

[0079] The inorganic binder is limited to a mass percentage range of 5% to 10% in the ceramic particles, which can more effectively improve the bonding strength between the ceramic particles and the aluminum alloy matrix, and balance the strength, toughness and wear resistance of the aluminum-based composite material.

[0080] Optionally, the inorganic binder comprises 10% by mass of the ceramic particles.

[0081] An optimized ratio of 10% inorganic binder in ceramic particles helps form a uniform microstructure in the composite material, reduces vibration caused by interface defects, and improves the bonding strength and overall performance of the aluminum matrix composite. The inorganic binder not only improves the strength and stiffness of the material but also helps enhance its fatigue resistance. In the application of roller 20, the optimized ratio of inorganic binder helps reduce vibration of compressor 10 caused by material fatigue, improving the durability of roller 20 and the operating efficiency of compressor 10.

[0082] This disclosure provides a method for preparing an aluminum-based composite material. The method is used to prepare an aluminum-based composite material as described in any of the above-disclosed embodiments. The method includes the following steps: pressing ceramic particles into shape, curing them to form an intermediate molded body; impregnating the intermediate molded body with molten aluminum alloy under high pressure, so that the aluminum alloy and ceramic particles are impregnated and composited under high pressure.

[0083] Before mixing the aluminum alloy and ceramic particles, the ceramic particles are first placed in a mold, pressed under pressure, and then cured to form an intermediate molded body. The aluminum alloy is melted to form molten aluminum alloy, which is then impregnated onto the intermediate molded body under high pressure, causing the aluminum alloy and ceramic particles to bond together under high pressure. This ensures a tight bond between the ceramic particles and the aluminum alloy matrix, resulting in a cast aluminum-based composite material with fewer internal defects. The high-pressure impregnation process promotes the bonding of the aluminum alloy and ceramic particles under high pressure, thereby improving the mechanical strength and vibration resistance of the aluminum-based composite material. When the roller 20 using this aluminum-based composite material is used in the high-speed compressor 10, it can effectively reduce vibration caused by material inhomogeneity, improving the operational stability and service life of the compressor 10.

[0084] Optionally, the applied pressure during ceramic particle compression molding is greater than or equal to 50 kg / cm². 2 And less than or equal to 300 kg / cm 2 .

[0085] The applied pressure during ceramic particle compression molding is greater than or equal to 50 kg / cm². 2 And less than or equal to 300 kg / cm 2 The selection of this pressure range is based on precise control of the material forming process. Appropriate pressure ensures a tight bond between the ceramic particles and the aluminum alloy matrix, while avoiding the degradation of material properties caused by over-compaction. Pressing within this pressure range allows the resulting aluminum-based composite material to withstand greater loads. The aluminum-based composite material is then used to form rollers 20, which, when used in the high-speed compressor 10, reduce vibration and noise caused by material fatigue, thereby improving the operational stability of the compressor 10.

[0086] Combination Figure 5 and Figure 6 As shown, this disclosure provides a roller 20 for a compressor 10, the roller 20 being made of an aluminum-based composite material as described in any of the above-disclosed embodiments.

[0087] The aluminum-based composite material described in the above-disclosed embodiments possesses the material properties of a ceramic-aluminum alloy composite. It exhibits high strength, high Young's modulus (high rigidity, low deformation, and minimal deformation), and high wear resistance comparable to cast iron, while being as lightweight as aluminum. Furthermore, it possesses a low coefficient of thermal expansion, intermediate between that of aluminum and ceramics. In addition, the aluminum-based composite material described in the above-disclosed embodiments is easy to cut and process, and exhibits good material damping characteristics, making vibration easily stopped. The roller 20 for the compressor 10 provided in this disclosure embodiment, being made from the aluminum-based composite material as described in any one of the above-disclosed embodiments, thus possesses all the beneficial effects of the aluminum-based composite material described in any one of the above-disclosed embodiments.

[0088] The roller 20, prepared from the aluminum-based composite material described in the above-disclosed embodiments, can withstand higher loads and have a longer service life due to its excellent mechanical strength and wear resistance. The lightweight design of this roller 20 helps reduce the dynamic load on the compressor 10, thereby reducing vibration and noise.

[0089] By employing the aforementioned rollers 20 in the compressor 10, vibrations of the compressor 10 caused by wear or fatigue of the rollers 20 can be reduced during high-speed operation. This not only improves the working efficiency of the compressor 10 but also enhances the smoothness and reliability of its operation.

[0090] Conventional compressors require high precision rollers, typically employing superhard cutting and extrusion grinding processes. However, common aluminum-ceramic alloys have relatively low hardness, making them prone to deformation during machining. This application utilizes an aluminum-based composite material with added zinc, which increases material hardness to achieve better superhard cutting and extrusion grinding characteristics, facilitating the machining of roller 20.

[0091] A comparative test was conducted between the aluminum-based composite roller 20 provided in this embodiment and the mass-produced cast iron roller 101. The aluminum-based composite material used in the aluminum-based composite roller 20 comprises, by mass percentage: Al 53%, Mg 1%, Si 4%, Mn 1%, Zn 1%, and ceramic particles 40%; the center particle size of the ceramic particles is 50 μm; the ceramic particles include aluminum borate and silicon carbide; and the inorganic binder accounts for 10% of the mass percentage of the ceramic particles. Specific comparative data are shown in Table 1 below.

[0092] Table 1

[0093]

[0094] Therefore, after applying the aluminum-based composite material provided in this embodiment to the roller 20, the mass of the roller 20 itself is reduced by 2 / 3, thereby reducing the mass of the balance block 40 and thus reducing the vibration acceleration of the compressor 10 during high-speed operation.

[0095] Combination Figure 3 As shown, this disclosure provides a compressor 10, which includes rollers 20 as described in the above-disclosed embodiments.

[0096] The compressor 10 provided in this disclosure embodiment, because it includes the rollers 20 as described in the above-disclosed embodiments, possesses all the beneficial effects of the rollers 20 described in the above-disclosed embodiments. The compressor 10 employing aluminum-based composite rollers 20 can significantly reduce the overall vibration level of the compressor 10 due to the lightweight and high mechanical strength of the rollers 20. The high mechanical strength and wear resistance of the rollers 20 can reduce the vibration of the compressor 10 and improve the stability of the compressor 10 during operation at high speeds. The lightweight roller design helps to reduce the dynamic load on the compressor 10, thereby reducing vibration and noise.

[0097] In the design of a conventional compressor 100, the balance block 40 is used to counteract and balance the eccentric mass of the rotating components, and the mass of the roller 20 is an important part of the eccentric mass. The balance block 40 of a conventional compressor 100 is typically located at the axial end of the motor rotor 30; the balance block 40 can be located at one or both ends of the motor rotor 30 along the axial direction. Figure 1 and Figure 2 As shown, the balance block 40 of the conventional compressor 100 is located at both ends of the motor rotor 30 along the axial direction.

[0098] The compressor 10 provided in this embodiment can also be like a conventional compressor 100, with a balance block 40 provided at the axial end of the motor rotor 30. The rollers 20 described in the above-disclosed embodiments have lower density and higher mechanical properties, resulting in a significant reduction in their own weight. Due to the reduced weight of the rollers 20, the eccentric mass of the compressor 10 is greatly reduced, thereby reducing the need for the balance block 40. In the compressor 10 provided in this embodiment, by using lightweight aluminum alloy composite material rollers 20, the eccentric mass of the compressor 10 is effectively reduced, thereby significantly reducing the mass of the balance block 40. This allows for a smaller balance block 40 in the compressor 10 provided in this embodiment compared to conventional compressors. Combined with... Figure 3 and Figure 4 As shown, the compressor 10 provided in this embodiment may also omit the balance block 40.

[0099] Optionally, combined Figure 3-6As shown, the roller 20 includes a roller body 21 with a central hole 22. The compressor 10 also includes a motor rotor 30 and a crankshaft 50. The motor rotor 30 has a shaft hole and is coaxially arranged with the roller 20. The crankshaft 50 passes through the central hole 22 of the roller 20 and the shaft hole of the motor rotor 30 in sequence. No balance blocks 40 are provided at either end of the motor rotor 30 along the axial direction.

[0100] Combination Figure 3 and Figure 4 As shown, the compressor 10 provided in this embodiment eliminates the balance blocks 40 at both ends of the motor rotor 30. Even without the balance blocks 40, the compressor 10 can still maintain stable operating performance and a low vibration level. This not only simplifies the structure of the compressor 10 but also reduces its overall weight, thereby improving its energy efficiency.

[0101] The foregoing description and accompanying drawings fully illustrate embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included or substituted for parts and features of other embodiments. Embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims.

Claims

1. An aluminum matrix composite material, characterized by, The aluminum alloy comprises Al, Mg, Si, Mn, and Zn; and the aluminum matrix composite comprises, by mass percentage, Al 43-63%, Mg 0.5-2%, Si 2-6%, Mn 0.5-2%, Zn 0.5-2%, and ceramic particles 30-50%.

2. The aluminum matrix composite of claim 1, wherein, The aluminum matrix composite comprises, by mass percentage, Al 53%, Mg 1%, Si 4%, Mn 1%, Zn 1%, and ceramic particles 40%.

3. The aluminum matrix composite of claim 1, wherein The ceramic particles have a central particle size of greater than or equal to 2 μm and less than or equal to 150 μm.

4. The aluminum matrix composite of claim 3, wherein The ceramic particles have a central particle size of 50 μm.

5. The aluminum matrix composite of claim 1, wherein The ceramic particles comprise One or both of aluminum borate and silicon carbide.

6. The aluminum matrix composite of any one of claims 1 to 5, wherein, The ceramic particles further comprise An inorganic binder, the inorganic binder having a mass percentage in the ceramic particles ranging from 2% to 20%.

7. The aluminum matrix composite of claim 6, wherein The inorganic binder has a mass percentage in the ceramic particles of 10%.

8. A method of producing an aluminum matrix composite material, characterized by, The method is used to prepare the aluminum matrix composite of any one of claims 1 to 7, and the method steps comprise The ceramic particles are compression molded, solidified, and formed into an intermediate molded body; The intermediate molded body is high-pressure impregnated with aluminum alloy melt water, and the aluminum alloy and the ceramic particles are impregnated with the composite under high pressure.

9. The method of claim 8, wherein The compression molding of the ceramic particles is performed at a pressure of greater than or equal to 50 kg / cm2 and less than or equal to 300 kg / cm2.

10. A roller for a compressor, characterized by, The roller is made of the aluminum matrix composite of any one of claims 1 to 7.

11. A compressor characterized by, The roller of claim 10 is included.

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