Aluminum matrix composite material, preparation method for aluminum matrix composite material, roller for compressor, and compressor

Abstract

An aluminum matrix composite material, comprising an aluminum alloy and ceramic particles, wherein the aluminum alloy comprises Al, Mg, Si, Mn and Zn. The aluminum matrix composite material comprises, in percentages 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 present invention also relates to a preparation method for an aluminum matrix composite material, a roller for a compressor, and a compressor. The aluminum matrix composite material has lightweight performance the same as that of aluminum, and also has relatively high mechanical strength and vibration attenuation. The compressor roller prepared by using the aluminum matrix composite material can effectively reduce the vibration of a compressor and improve the stability and reliability of the compressor under high-speed operation.

Description

Aluminum matrix composite, method for preparing aluminum matrix composite, roller for compressor and compressor

[0001] The present application is based on and claims priority to Chinese Patent Application No. 202411375591.0, filed on September 29, 2024, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the technical field of compressors, in particular to an aluminum matrix composite, a method for preparing an aluminum matrix composite, a roller for a compressor and a compressor. BACKGROUND

[0003] At present, miniaturization and high speed rotation are the design trends of air conditioning compressors. During the rotation of the compressor, the roller is sleeved on the eccentric circle of the crankshaft and rotates with the crankshaft, and the mass of the roller is an important part of the eccentric mass. The eccentric mass is one of the root causes of large vibration of the high-speed rotating compressor. The light weight of the roller of the rotary compressor is of great significance to reduce the noise of the high-speed rotary compressor.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

[0005] Although the related art can reduce the mass of the compressor roller, the mechanical strength of the compressor roller needs to be improved, and the compressor roller still has large vibration when applied to a high-speed rotary compressor.

[0006] It should be noted that the information disclosed in the above BACKGROUND section is only used to strengthen the understanding of the background of the present application, and therefore can include information that does not constitute the related art known to those of ordinary skill in the art. SUMMARY

[0007] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an overall description of the application, nor is it intended to identify key / important elements or delineate the scope of the embodiments, but as a prelude to the detailed description below.

[0008] The embodiments of the present disclosure provide an aluminum matrix composite, a method for preparing an aluminum matrix composite, a roller for a compressor and a compressor to enhance the mechanical strength of the aluminum matrix composite, and the roller is prepared from the aluminum matrix composite, thereby reducing the vibration of the compressor.

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

[0010] According to a second aspect of the embodiments of the present application, a preparation method of an aluminum matrix composite material is provided, the method being used to prepare the aluminum matrix composite material as disclosed in any of the above embodiments, and the method steps comprising: ceramic particle compression molding, solidification, forming an intermediate molding body; high-pressure impregnation of the intermediate molding body with aluminum alloy melt water, so as to impregnate the aluminum alloy and the ceramic particles under high pressure.

[0011] According to a third aspect of the embodiments of the present application, a roller for a compressor is provided, the roller being prepared from the aluminum matrix composite material as disclosed in any of the above embodiments.

[0012] According to a fourth aspect of the embodiments of the present application, a compressor is provided, comprising the roller as disclosed in the above embodiments.

[0013] The above general description and the following description are merely exemplary and explanatory, and are not intended to limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0014] One or more embodiments are exemplarily illustrated by the drawings corresponding thereto, which do not constitute a limitation on the embodiments, elements with the same reference numerals in the drawings are shown as similar elements, the drawings do not constitute a proportional limitation, and wherein:

[0015] FIG. 1 is a structural schematic diagram of a conventional compressor provided by the related art;

[0016] FIG. 2 is an enlarged schematic diagram of part A shown in FIG. 1;

[0017] FIG. 3 is a structural schematic diagram of a compressor provided by the embodiments of the present disclosure;

[0018] FIG. 4 is an enlarged schematic diagram of part B shown in FIG. 3;

[0019] FIG. 5 is a structural schematic diagram of a roller provided by the embodiments of the present disclosure;

[0020] FIG. 6 is a structural schematic diagram of another roller provided by the embodiments of the present disclosure.

[0021] Reference signs: Related art: 100: Conventional compressor; 101: Conventional cast iron roller; 30: Electronic rotor; 40: Balance weight; 50: Crankshaft; Embodiment of the present disclosure: 10: Compressor; 20: Roller; 21: Roller body; 22: Center hole; 30: Motor rotor; 50: Crankshaft. DETAILED DESCRIPTION

[0022] In order to enable a more detailed understanding of the features and technical content of the embodiments of the present disclosure, the implementation of the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings, which are only used for reference and do not limit the embodiments of the present disclosure. In the following technical description, in order to facilitate explanation, a plurality of details are provided to provide a full understanding of the disclosed embodiments. However, one or more embodiments can still be implemented without these details. In other cases, well-known structures and devices can be simplified to facilitate the drawings.

[0023] The terms "first", "second", and the like in the specification and claims of the embodiments of the present disclosure and the above-described drawings are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances in order to describe the embodiments of the present disclosure described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0024] The reference in the specification to any related art is not and should not be taken as an acknowledgment or any form of suggestion that this related art forms part of common general knowledge in the field of the application area or any other jurisdiction, or that this related art is known to be relevant to the relevant.

[0025] In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "back", and the like indicate the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the embodiments of the present disclosure and its embodiments, and are not used to limit the indicated devices, elements or components must have a specific orientation, or be constructed and operated in a specific orientation. And, in addition to indicating the orientation or positional relationship, the above-mentioned terms can also be used to represent other meanings, for example, the term "upper" can also be used to represent a certain attachment relationship or connection relationship in some cases. For those skilled in the art, the specific meaning of these terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0026] In addition, the terms "set", "connected", and "fixed" should be understood broadly. For example, "connected" can be fixed connection, detachable connection, or integral configuration; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through an intermediate medium, or internal communication between two devices, elements, or components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present disclosure according to the specific circumstances.

[0027] Unless otherwise specified, the term "plurality" means two or more.

[0028] In the embodiments of the present disclosure, the character " / " represents an "or" relationship between the preceding and following objects. For example, A / B represents: A or B.

[0029] The term "and / or" is a description of the association between objects, which means that there can be three relationships. For example, A and / or B means: A or B, or, A and B, the three relationships.

[0030] It should be noted that the embodiments in the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0031] The embodiments of the present disclosure provide an aluminum matrix composite material, which comprises an aluminum alloy and ceramic particles, the aluminum alloy comprising Al, Mg, Si, Mn, Zn; the aluminum matrix composite material comprises, in percentage by mass: Al 43% to 63%, Mg 0.5% to 2%, Si 2% to 6%, Mn 0.5% to 2%, Zn 0.5% to 2%, and ceramic particles 30% to 50%.

[0032] The mass percentage of the ceramic particles in the aluminum-based composite material provided by the embodiments of the present disclosure is 30% to 50%, which can effectively improve the mechanical strength of the aluminum-based composite material and improve the wear resistance and deformation resistance. The Al element in the aluminum alloy is the basic element component of the aluminum alloy, and the mass percentage of the Al element in the aluminum-based composite material is 43% to 63%, which can reduce the mass of the aluminum-based composite material. The Al, Mg, Si, Mn, Zn and other elements in the aluminum alloy jointly act to realize the lightweight of the aluminum alloy while improving the mechanical strength and wear resistance of the aluminum alloy. In this way, the mechanical strength and wear resistance of the aluminum-based composite material can be further improved while maintaining the lightweight of the aluminum-based composite material. The addition of a small amount of Mg, Si, Mn and Zn elements plays a key role in improving the strength and hardness of the aluminum alloy. Among them, the 0.5% to 2% Mg element can improve the elastic modulus and hardness of the aluminum alloy, the 2% to 6% Si element and the 0.5% to 2% Mn element can improve the elastic modulus and wear resistance of the aluminum alloy, and the 0.5% to 2% Zn element can form a strengthening phase with Al and Mg elements to more effectively improve the strength and hardness of the aluminum alloy.

[0033] When the mass percentage of Al is greater than or equal to 43%, the aluminum-based composite material maintains good processing performance and low density of aluminum, which is beneficial to reduce the mass of the aluminum-based composite material while improving the plasticity and toughness of the material. When the mass percentage of Al is less than or equal to 63%, the stiffness and strength of the aluminum-based composite material can be avoided. At the same time, by increasing the proportion of ceramic particles, the stiffness, strength and wear resistance of the material can be significantly improved, which is very beneficial for applications that bear high load and require high wear resistance. The embodiments of the present disclosure limit the mass percentage of Al to 43% to 63%, which can make the aluminum-based composite material maintain lightweight while having good stiffness and strength.

[0034] When the mass percentage of Mg is greater than or equal to 0.5%, a strengthening phase such as Mg2Si can be formed to improve the strength and stiffness of the aluminum-based composite material. When the mass percentage of Mg is less than or equal to 2%, the aluminum-based composite material can be prevented from being excessively hardened to maintain certain plasticity and toughness, which is beneficial for the processing and forming of the aluminum-based composite material. The embodiments of the present disclosure limit the mass percentage of Mg to 0.5% to 2%, which can balance the strength and plasticity to make the aluminum-based composite material have good comprehensive mechanical properties while being beneficial for processing and heat treatment.

[0035] When the mass percentage of Si is greater than or equal to 2%, the Si element can form a strengthening phase in the aluminum alloy to improve the strength and hardness of the material, and also improve the wear resistance and thermal stability of the aluminum matrix composite. When the mass percentage of Si is less than or equal to 6%, the thermal expansion coefficient of the material can be controlled to improve the dimensional stability, while avoiding excessive hardening of the aluminum matrix composite and maintaining a certain plasticity. The disclosed embodiments limit the mass percentage of Si to 2% to 6%, which can improve the strength and wear resistance of the aluminum matrix composite while maintaining a certain plasticity, which is beneficial for processing and heat treatment.

[0036] Mn can improve the strength and hardness of the aluminum matrix composite in the aluminum alloy, while helping to improve corrosion resistance. When the mass percentage of Mn is greater than or equal to 0.5%, a strengthening phase can also be formed to improve 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 to maintain good processing performance. The disclosed embodiments 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 plasticity, which is beneficial for processing.

[0037] Zn can improve the strength and hardness of the aluminum matrix composite in the aluminum alloy, while helping to improve corrosion resistance. When the mass percentage of Zn is greater than or equal to 0.5%, a strengthening phase can be formed to improve the strength of the aluminum matrix composite. When the mass percentage of Zn is less than or equal to 2%, it helps to maintain the plasticity of the material and control the work hardening rate of the material to maintain good processing performance. The disclosed embodiments limit the mass percentage of Zn to 0.5% to 2%, which can improve the strength and corrosion resistance of the aluminum matrix composite while maintaining a certain plasticity, which is beneficial for processing.

[0038] When the mass percentage of ceramic particles is greater than or equal to 30%, the stiffness and strength of the aluminum matrix composite can be effectively improved, and the wear resistance and heat resistance of the aluminum matrix composite can be enhanced. When the mass percentage of ceramic particles is less than or equal to 50%, the aluminum matrix composite can maintain a certain plasticity and toughness, avoiding the material becoming brittle due to excessive ceramic particle content, which affects its processing and use. Appropriate ceramic particle content also helps to balance the cost and performance of the aluminum matrix composite, avoiding a significant increase in the preparation cost of the material due to excessive ceramic content. The disclosed embodiments limit the mass percentage of ceramic particles to 30% to 50%, which helps to achieve high strength, high stiffness, and good wear resistance of the aluminum matrix composite while maintaining a certain plasticity and toughness, which is beneficial for the processing and application of the aluminum matrix composite.

[0039] The combination of aluminum alloy and ceramic particles in the aluminum matrix composite, the light weight of the aluminum alloy, and the high hardness and stiffness characteristics of the ceramic particles make the aluminum matrix composite improve the mechanical strength of the aluminum matrix composite while reducing the mass.

[0040] The roller 20 prepared by using the aluminum-based composite material can effectively improve the mechanical strength of the roller 20 while realizing the light weight of the roller 20, thereby effectively reducing the vibration problem of the compressor 10 under high rotation speed. Under the high rotation speed of the compressor 10, the high mechanical strength of the roller 20 can better resist deformation, thereby reducing the vibration caused by the deformation of the roller 20. The light weight of the roller 20 can reduce the mass of the eccentric part of the rotary compressor 10, thereby reducing the exciting force of the eccentric part, effectively reducing the vibration caused by the eccentric mass, and improving the operation stability of the compressor 10.

[0041] It can be understood that the mass percentage of Al can be 43%, 45%, 50%, 53%, 55%, 60%, 63%, the mass percentage of Mg can be 0.5%, 0.8%, 1%, 1.2%, 1.5%, 1.8%, 2%, the mass percentage of Si can be 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, 5%, 5.5%, 6%, the mass percentage of Mn can be 0.5%, 0.8%, 1%, 1.2%, 1.5%, 1.8%, 2%, the mass percentage of Zn can be 0.5%, 0.8%, 1%, 1.2%, 1.5%, 1.8%, 2%, and the mass percentage of ceramic particles can be 30%, 32%, 35%, 38%, 40%, 42%, 45%, 48%, 50%.

[0042] The aluminum-based composite material provided by the embodiment of the present disclosure has the same light weight as aluminum, and the tensile strength, Young's modulus and thermal expansion rate are comparable to cast iron, and has high mechanical strength and vibration attenuation. The roller 20 prepared by using the aluminum-based composite material can effectively reduce the vibration of the compressor 10 and improve the stability and reliability of the compressor 10 under high rotation speed by enhancing the mechanical strength and wear resistance of the roller 20 and cooperating with the light weight design.

[0043] Optionally, the aluminum-based composite material includes, by mass percentage, 60% of aluminum alloy and 40% of ceramic particles.

[0044] The proportion of aluminum alloy in the components of the aluminum-based composite material is appropriately reduced to 60%, and the proportion of ceramic particles is increased to 40%. The 60% aluminum alloy can maintain the light weight of the aluminum-based composite material. The 40% ceramic particles can effectively improve the mechanical strength of the aluminum-based composite material, so that it has better load-carrying capacity and deformation resistance under high load. The roller 20 prepared by using the aluminum-based composite material can reduce the vibration caused by the deformation of the roller 20 under the high rotation speed of the compressor 10.

[0045] Optionally, the aluminum-based composite material comprises, by mass percentage: Al 53%, Mg 1%, Si 4%, Mn 1%, Zn 1%, and ceramic particles 40%.

[0046] The embodiments of the present disclosure optimize the mass percentage of each component of the aluminum-based composite material, so that the aluminum-based composite material achieves better mechanical strength and comprehensive performance. Among the metal elements of the aluminum alloy, the mass percentage of Al element is 53%, which ensures the lightweight and good heat conduction performance of the material. The addition of 1% Mg element, 4% Si element, 1% Mn element and 1% Zn element plays a key role in improving the strength and hardness of the aluminum alloy. The ceramic particles account for 40%, which can improve the strength and stiffness of the aluminum-based composite material while maintaining the lightweight of the aluminum-based composite material. The roller 20 made of such aluminum-based composite material can withstand greater centrifugal force when running at high speed, reducing vibration and noise caused by material fatigue. The mechanical strength of the roller 20 is improved, thereby helping to reduce the vibration of the high-speed compressor 10.

[0047] The mass of the aluminum-based composite material provided by the embodiments of the present disclosure is 1 / 3 of that of cast iron. The roller 20 made of the aluminum-based composite material provided by the embodiments of the present disclosure can reduce the vibration of the high-speed compressor 10 to about 1 / 6.

[0048] Optionally, the ceramic particles have a central particle size greater than or equal to 2 μm and less than or equal to 150 μm.

[0049] The ceramic particles are in a powder state. The aluminum-based composite material uses ceramic particles with a central particle size greater than or equal to 2 μm and less than or equal to 150 μm as the main raw material. When the central particle size of the ceramic particles is greater than or equal to 2 μm, the mechanical strength and wear resistance of the aluminum-based composite material can be improved. When the central particle size of the ceramic particles is less than or equal to 150 μm, smaller ceramic particles can improve the thermal stability and toughness of the aluminum-based composite material, and the contact and bonding between the particles are more uniform, which helps to improve the uniformity and reliability of the aluminum-based composite material.

[0050] Controlling the central particle size of the ceramic particles within the range of 2 μm to 150 μm can make the ceramic particles well combined with the aluminum alloy matrix, while avoiding uneven material performance caused by excessively large particle size. This helps to balance the strength, toughness and wear resistance of the composite material while maintaining the thermal stability and density of the material. In the application of the roller 20, the particle size range of the ceramic particles helps to reduce vibration caused by uneven material, improve the durability of the roller 20 and the operation stability of the high-speed compressor 10.

[0051] It can be understood that the central particle size of the ceramic particles can be 2 μm, 5 μm, 10 μm, 20 μm, 50 μm, 100 μm, 150 μm, etc.

[0052] Optionally, the ceramic particles have a central particle size greater than or equal to 3 μm and less than or equal to 100 μm.

[0053] The ceramic particles have a central particle size in the range of 3 μm to 100 μm, which can make the ceramic particles more uniformly combined with the aluminum alloy matrix, and help to improve the overall mechanical strength of the aluminum matrix composite, balance the strength, toughness, wear resistance and processability of the aluminum matrix composite.

[0054] Optionally, the ceramic particles have a central particle size of 50 μm.

[0055] The ceramic particles have a central particle size in the range of 2 μm to 150 μm, and in particular, the ceramic particles with a central particle size of 50 μm can be better combined with the aluminum alloy matrix, and provide better strength and toughness balance for the aluminum matrix composite. This can make the aluminum matrix composite have good impact resistance while maintaining high strength. The ceramic particles with such a particle size are uniformly distributed in the aluminum matrix composite, which helps to improve the wear resistance and fatigue resistance of the roller 20. In the high-speed compressor 10, the roller 20 made of such an aluminum matrix composite can effectively reduce the vibration caused by the eccentric mass, reduce the noise, and improve the working efficiency and service life of the compressor 10.

[0056] Optionally, the ceramic particles include one or both of aluminum borate and silicon carbide.

[0057] Aluminum borate has good thermal stability and can maintain material properties unchanged at high temperature. Silicon carbide has high hardness and wear resistance, which can effectively improve the service life. The use of one or both of aluminum borate and silicon carbide in the ceramic particles of the aluminum matrix composite can effectively improve the high-temperature stability and wear resistance of the aluminum matrix composite. The roller 20 made of such an aluminum matrix composite can maintain stable performance when used in the compressor 10, even at high speed and high temperature, reducing vibration and noise caused by material wear.

[0058] Optionally, the ceramic particles further include an inorganic binder, and the mass percentage of the inorganic binder in the ceramic particles is in the range of 2% to 20%.

[0059] The inorganic binder can fill the gap between the ceramic particles and the aluminum alloy matrix, form a uniform composite microstructure, and improve the bonding effect of the ceramic particles and the aluminum alloy matrix.

[0060] When the mass percentage of the inorganic binder is greater than 2%, the bonding strength between the ceramic particles and the aluminum alloy matrix can be significantly improved. This enhanced bonding force helps to improve the overall mechanical strength and wear resistance of the aluminum matrix composite material. Increasing the content of the inorganic binder can improve the dispersibility of the ceramic particles in the composite material, thereby improving the uniformity and reliability of the aluminum matrix composite material. Controlling the mass percentage of the inorganic binder to be below 20% can avoid the brittleness of the material caused by excessive binder, and maintain the toughness and plasticity of the composite material. At the same time, a lower binder content helps to reduce the preparation cost of the composite material while ensuring the processing and heat treatment performance of the material. When the mass percentage of the inorganic binder in the ceramic particles is limited within the range of 2% to 20%, the inorganic binder can effectively improve the bonding strength between the ceramic particles and the aluminum alloy matrix, while avoiding the performance degradation of the material caused by excessive binder, and help to balance the strength, toughness and wear resistance of the aluminum matrix composite material, while maintaining the processing performance and cost-effectiveness of the material.

[0061] The inorganic binder includes, but is not limited to, silicate-based binders, phosphate-based binders, borate-based binders, and oxide-based binders.

[0062] It can be understood that the mass percentage of the inorganic binder in the ceramic particles can be 2%, 5%, 10%, 12%, 15%, 18%, or 20%.

[0063] Alternatively, the mass percentage of the inorganic binder in the ceramic particles is 5% to 10%.

[0064] When the mass percentage of the inorganic binder in the ceramic particles is limited within the range of 5% to 10%, the bonding strength between the ceramic particles and the aluminum alloy matrix can be more effectively improved, and the strength, toughness and wear resistance of the aluminum matrix composite material can be balanced.

[0065] Alternatively, the mass percentage of the inorganic binder in the ceramic particles is 10%.

[0066] The optimal ratio of the inorganic binder in the ceramic particles is 10%, which helps to form a uniform composite material microstructure, reduces vibrations caused by interface defects, and improves the bonding strength and overall performance of the aluminum matrix composite material. The inorganic binder not only improves the strength and stiffness of the material, but also helps to improve the fatigue resistance of the material. In the application of the roller 20, the optimal ratio of the inorganic binder helps to reduce the vibration of the compressor 10 caused by material fatigue, and improves the durability of the roller 20 and the operating efficiency of the compressor 10.

[0067] The present disclosure provides a method for preparing an aluminum matrix composite material, the method for preparing the aluminum matrix composite material as described in any of the above embodiments, the method comprising: ceramic particle compression molding, solidification, forming an intermediate molding body; high pressure impregnation of aluminum alloy melt water on the intermediate molding body, so that the aluminum alloy and the ceramic particles are impregnated under high pressure.

[0068] Before mixing the aluminum alloy and the ceramic particles, the ceramic particles are placed in a compression mold to apply pressure for compression molding, and solidification is performed to form an intermediate molding body. The aluminum alloy is melted to form an aluminum alloy melt water, and the aluminum alloy melt water is high pressure impregnated on the intermediate molding body, so that the aluminum alloy and the ceramic particles are impregnated under high pressure. In this way, the ceramic particles and the aluminum alloy matrix can be tightly combined, and the aluminum matrix composite material cast has few internal defects. The high pressure impregnation process can promote the impregnation of the aluminum alloy and the ceramic particles under high pressure, thereby improving the mechanical strength and vibration resistance of the aluminum matrix composite material. The roller 20 made of the aluminum matrix composite material can effectively reduce the vibration caused by material unevenness and improve the operation stability and service life of the high-speed compressor 10 when used in the high-speed compressor 10.

[0069] Optionally, the applied pressure for compression molding of the ceramic particles is greater than or equal to 50 kg / cm 2 and less than or equal to 300 kg / cm 2 .

[0070] The applied pressure for compression molding of the ceramic particles is greater than or equal to 50 kg / cm 2 and less than or equal to 300 kg / cm 2 . The selection of this pressure range is based on the precise control of the material molding process. The appropriate pressure can make the ceramic particles and the aluminum alloy matrix tightly combined, while avoiding the performance degradation caused by excessive compaction. Compression molding in the pressure range makes the aluminum matrix composite material capable of bearing greater load. The aluminum matrix composite material is made into a roller 20, which can reduce vibration and noise caused by material fatigue and improve the operation stability of the compressor 10 when used in the high-speed compressor 10.

[0071] In combination with FIGS. 5 and 6, the present disclosure provides a roller 20 for a compressor 10, the roller 20 being made of the aluminum matrix composite material as described in any of the above embodiments.

[0072] The aluminum-based composite material has the material properties of the combination of the ceramic and the aluminum alloy. The aluminum-based composite material has the high strength, the high Young's modulus (high rigidity and small deformation), and the high wear resistance as the cast iron, and is as light as the aluminum. Meanwhile, the aluminum-based composite material has the low thermal expansion rate between the aluminum and the ceramic. In addition, the aluminum-based composite material has the easy cutting function, the good material attenuation property, and the easy vibration stopping. The roller 20 for the compressor 10 is made of the aluminum-based composite material according to any one of the above embodiments, and has all the advantages of the aluminum-based composite material according to any one of the above embodiments.

[0073] The roller 20 made of the aluminum-based composite material according to the above embodiments has the excellent mechanical strength and the wear resistance, and can bear the higher load and the longer service life. The light weight design of the roller 20 helps to reduce the dynamic load of the compressor 10, thereby reducing the vibration and the noise.

[0074] The roller 20 is used in the compressor 10, and can reduce the vibration of the compressor 10 caused by the wear or the fatigue of the roller 20 during the high speed operation. Thus, the working efficiency of the compressor 10 can be improved, and the stability and the reliability of the compressor 10 can be improved.

[0075] The roller of the conventional compressor has the high precision requirement, and generally uses the super-hard cutting and the extrusion grinding processing mode. The general aluminum ceramic alloy has the small hardness, and is easily deformed during the processing. The aluminum-based composite material with the added zinc element is used in the present application, the hardness of the material is improved, the super-hard cutting and the extrusion grinding processing characteristics are realized, and the roller 20 is easily processed.

[0076] The aluminum-based composite material roller 20 provided by the present application is compared with the conventional cast iron roller 101. The aluminum-based composite material used in the aluminum-based composite material roller 20 includes, 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. The mass percentage of the inorganic adhesive in the ceramic particles is 10%. The specific comparison data is shown in Table 1.

[0077] Table 1

[0078] As can be seen, after the aluminum-based composite material provided by the present application is applied to the roller 20, the mass of the roller 20 itself is reduced by 2 / 3, so that the mass of the balance block 40 can be correspondingly reduced, and the vibration acceleration of the compressor 10 during the high speed operation is further reduced.

[0079] In combination with FIG. 3, the compressor 10 provided by the embodiment of the present disclosure includes the roller 20 as described in the above disclosed embodiment.

[0080] The compressor 10 provided by the embodiment of the present disclosure has all the beneficial effects of the roller 20 as described in the above disclosed embodiment. The compressor 10 with the roller 20 made of the aluminum-based composite material can significantly reduce the vibration level of the compressor 10 as a whole due to the lightweight and high mechanical strength of the roller 20. The high mechanical strength and wear resistance of the roller 20 can reduce the vibration of the compressor 10 and improve the stability of the operation of the compressor 10 at high speed. The lightweight design of the roller 20 helps to reduce the dynamic load of the compressor 10, thereby reducing vibration and noise.

[0081] In the design of the conventional compressor 100, the balance weight 40 is used to offset and balance the eccentric mass of the rotating part, and the mass of the roller 20 is an important part of the eccentric mass. The balance weight 40 of the conventional compressor 100 is usually arranged at the end of the motor rotor 30 in the axial direction, and the balance weight 40 can be arranged at one end or both ends of the motor rotor 30 in the axial direction. In combination with FIGS. 1 and 2, the balance weight 40 of the conventional compressor 100 is arranged at both ends of the motor rotor 30 in the axial direction.

[0082] The compressor 10 provided by the embodiment of the present disclosure can also be provided with the balance weight 40 at the end of the motor rotor 30 in the axial direction as the conventional compressor 100. The roller 20 as described in the above disclosed embodiment has lower density and higher mechanical properties, so that the weight of the roller 20 itself can be significantly reduced. Due to the reduction of the mass of the roller 20 itself, the eccentric mass of the compressor 10 is greatly reduced, thereby reducing the need for the balance weight 40. In the compressor 10 provided by the embodiment of the present disclosure, the lightweight aluminum alloy composite material roller 20 is used, so that the eccentric mass of the compressor 10 is effectively reduced, thereby the mass of the balance weight 40 can be greatly reduced. In this way, a balance weight 40 with smaller mass than that of the conventional compressor can be arranged in the compressor 10 provided by the embodiment of the present disclosure. In combination with FIGS. 3 and 4, the balance weight 40 can also not be arranged in the compressor 10 provided by the embodiment of the present disclosure.

[0083] Optionally, in combination with FIGS. 3 to 6, the roller 20 includes a roller body 21 provided with a central hole 22, and the compressor 10 further includes a motor rotor 30 and a crankshaft 50, the motor rotor 30 is provided with a shaft hole, the motor rotor 30 is coaxially arranged with the roller 20, and the crankshaft 50 sequentially penetrates the central hole 22 of the roller 20 and the shaft hole of the motor rotor 30. The balance weight 40 is not arranged at both ends of the motor rotor 30 in the axial direction.

[0084] In combination with FIGS. 3 and 4, the compressor 10 provided by the embodiment of the present disclosure cancels the balance block 40 at both ends of the motor rotor 30. In the case where the balance block 40 is not arranged, the compressor 10 can still maintain stable operation performance and a low vibration level. In this way, the structure of the compressor 10 can be simplified, and the overall weight of the compressor 10 can be reduced, thereby improving the energy efficiency of the compressor 10.

[0085] The aluminum-based composite material, the preparation method of the aluminum-based composite material, the roller for the compressor and the compressor provided by the embodiment of the present disclosure can achieve the following technical effects:

[0086] The mass percentage of the ceramic particles is 30% to 50%, which can effectively improve the mechanical strength of the aluminum-based composite material and improve the wear resistance and deformation resistance. The mass percentage of the Al element in the aluminum alloy as a basic element component of the aluminum alloy is 43% to 63% in the aluminum-based composite material, which can reduce the mass of the aluminum-based composite material. The Al, Mg, Si, Mn and Zn elements in the aluminum alloy jointly act to realize the lightweight of the aluminum alloy, and also improve the mechanical strength and wear resistance of the aluminum alloy. The aluminum-based composite material has the same lightweight as the aluminum, and the tensile strength, Young's modulus and thermal expansion rate are comparable to cast iron, and has high mechanical strength and vibration attenuation. The roller is prepared by using the aluminum-based composite material, the mechanical strength and wear resistance of the roller are enhanced, and the lightweight design is matched, which can effectively reduce the vibration of the compressor and improve the stability and reliability of the compressor under high-speed operation.

[0087] The above description and drawings sufficiently show the embodiments of the present disclosure to enable one skilled in the art to practice them. Other embodiments can include structural and other changes. The embodiments represent only the possible variations. Individual components and functions are optional unless explicitly required, and the order of operations can be changed. Parts and features of some embodiments can be included or replaced by parts and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. An aluminum matrix composite comprising an aluminum alloy and ceramic particles, the aluminum alloy comprising Al, Mg, Si, Mn, Zn; the aluminum matrix composite comprising, by mass percentage: Al 43%~63%, Mg 0.5%~2%, Si 2%~6%, Mn 0.5%~2%, Zn 0.5%~2%, ceramic particles 30%~50%.

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

3. The aluminum matrix composite of claim 1 or 2, wherein, The ceramic particles have a central particle size 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 any one of claims 1 to 4, 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 for preparing an aluminum-based composite material, the method being used to prepare the aluminum-based composite material according to any one of claims 1 to 7, the method steps comprising: Press forming of the ceramic particles, solidification, forming an intermediate formed body; High-pressure impregnation of the intermediate formed body with aluminum alloy molten water, impregnation of the aluminum alloy and the ceramic particles under high pressure to form a composite.

9. The method for preparing an aluminum-based composite material according to claim 8, wherein ceramic particles are pressed at a pressure of greater than or equal to 50 kg / cm 2 and less than or equal to 300 kg / cm 2 .

10. A roller for a compressor, the roller being prepared from the aluminum-based composite material according to any one of claims 1 to 7.

11. A compressor comprising: The roller according to claim 10.

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