CN115558847A - Alloy material and preparation method thereof, sliding vane, compressor and air conditioner - Google Patents

Alloy material and preparation method thereof, sliding vane, compressor and air conditioner Download PDF

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Publication number
CN115558847A
CN115558847A CN202211157211.7A CN202211157211A CN115558847A CN 115558847 A CN115558847 A CN 115558847A CN 202211157211 A CN202211157211 A CN 202211157211A CN 115558847 A CN115558847 A CN 115558847A
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alloy material
impurities
compressor
balance
mass
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史正良
徐嘉
胡文祥
李业林
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/002—Heat treatment of ferrous alloys containing Cr
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/005—Heat treatment of ferrous alloys containing Mn
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/008—Heat treatment of ferrous alloys containing Si
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/008—Martensite

Abstract

The application provides an alloy material and a preparation method thereof, a sliding sheet, a compressor and an air conditioner, wherein the alloy material is prepared from the following raw materials in percentage by mass: 0.80-1.25%, si 0.15-0.4%, mn 0-0.45%, cr 0-1.75%, and Fe and impurities in balance. According to the alloy material, the use environment of the sliding sheet can be met under the condition of reducing the precious metal elements.

Description

Alloy material and preparation method thereof, sliding vane, compressor and air conditioner
Technical Field
The application relates to the technical field of material processing, in particular to an alloy material and a preparation method thereof, a slip sheet, a compressor and an air conditioner.
Background
At present, the rolling rotor compressor is mainly applied to the field of household air conditioners, the production capacity and the sales volume of the rolling rotor compressor reach 2 hundred million in recent years, and the technical progress of the rolling rotor compressor drives the development of the refrigeration air conditioner industry and is a core component in a refrigeration system. The rolling rotor compressor is mainly composed of a pump body assembly and a motor assembly, wherein the pump body assembly is mainly composed of core parts such as an upper flange, a lower flange, a crankshaft, a cylinder, a roller and a slip sheet and is driven by the motor assembly, kinetic energy of the motor rotor is converted into internal energy and kinetic energy of a refrigerant, and the rolling rotor compressor is a functional assembly for realizing compression. The processes of air suction, compression and exhaust of the rotary compressor are mainly completed by the pump body assembly. The high efficiency and feasibility of the pump body assembly of the compressor determine the performance and reliability of the air conditioning system, and the high efficiency and high reliability are the key directions for the research of the compressor.
And the sliding vane is one of core parts of the pump body, is subjected to larger load during working, and has high required strength and good wear resistance. At present, the slide sheet materials are limited to two, one is W6Mo5Cr4V2 high-speed steel which contains 5.5-6.75 mass percent of W, 4.5-5.5 mass percent of Mo, 3.8-4.4 mass percent of Cr and 1.75-2.2 mass percent of V, and the mass percent of alloy elements except Si and Mn reaches more than 15.5%; the other is martensitic stainless steel containing 16-18% of Cr by mass fraction. From the materials, the two compressor sliding vanes in the prior art contain valuable alloy elements with higher mass fraction, and have higher consumption of alloy mineral resources and higher cost.
Therefore, how to provide an alloy material capable of satisfying the use environment of the sliding vane with a reduction of noble metal elements, a preparation method thereof, the sliding vane, a compressor and an air conditioner is a problem to be solved by those skilled in the art.
Disclosure of Invention
Therefore, an object of the present invention is to provide an alloy material, a method for preparing the same, a sliding vane, a compressor, and an air conditioner, which can satisfy a use environment of the sliding vane while reducing precious metal elements.
In order to solve the above problems, the present application provides an alloy material, which is prepared from the following raw materials by mass:
0.80-1.25%, si 0.15-0.4%, mn 0-0.45%, cr 0-1.75%, and Fe and impurities in balance.
Further, the alloy material is prepared from the following raw materials in percentage by mass: 0.80-1.25%, si 0.15-0.4%, mn 0-0.45%, cr 1.2-1.75%, and Fe and impurities in balance.
Further, the alloy material is prepared from the following raw materials in percentage by mass: 0.91-1.10% of C, 0.25-0.35% of Si, 0.20-0.40% of Mn, 1.40-1.75% of Cr, and the balance of Fe and impurities;
and/or the impurities comprise S, P.
Further, the alloy material is prepared from the following raw materials in percentage by mass: 0.80-1.25%, si 0.15-0.4%, mn 0-0.45%, cr 0-0.35%, and Fe and impurities in balance.
Further, the alloy material is prepared from the following raw materials in percentage by mass: 0.95-1.15% by weight of C, 0.25-0.35% by weight of Si, 0.20-0.40% by weight of Mn, 0.15-0.30% by weight of Cr, and the balance of Fe and impurities.
Further, the matrix structure of the alloy material comprises high-carbon martensite and uniformly distributed carbides.
Further, the size of carbide particles in the matrix structure of the alloy material is 0.3-1.5 microns.
Further, the surface microhardness of the alloy material is 600-900HV.
Further, the surface microhardness of the alloy material is 700-820HV.
According to still another aspect of the present application, a method for preparing an alloy material includes the steps of:
step (1): preparing the raw materials into blanks;
step (2): heating the blank to 820-860 ℃, and carrying out heat preservation for 30-45min for the first time so as to fully austenitize the interior of the blank; then cooling to obtain a first-grade material;
and (3): and heating the primary material to 150-200 ℃, and carrying out secondary heat preservation for 60-150min to obtain the alloy material.
Further, the second heat preservation time is 100-120min.
Further, in the step (2), the cooling includes the steps of: cooling is carried out in an oil cooling medium.
According to still another aspect of the present application, there is provided a sliding vane made of the alloy material described above; or the sliding sheet is made by adopting the preparation method of the alloy material.
According to still another aspect of the present application, there is provided a compressor, the vane being the vane described above.
According to still another aspect of the present application, there is provided an air conditioner, wherein the compressor is the above-mentioned compressor. According to the alloy material and the preparation method thereof, the sliding vane, the compressor and the air conditioner, the sliding vane material is low in content or free of precious metal elements, the cost of the alloy material can be effectively reduced, and further the cost of the sliding vane and the compressor is reduced, and the problems of high cost and low competitiveness of the existing compressor are solved; the method adopts the heat treatment process (quenching-heating-heat preservation-cooling, tempering-heat preservation-cooling), so that the part processing process is simple, and the carbides in dispersed distribution ensure better wear resistance. The material does not contain W, mo, V and Cr noble alloy elements, the types or the contents of the noble alloy elements are greatly reduced, and the problems of high alloy elements, high material acquisition energy consumption and high resource consumption of the sliding sheet material in the prior art can be solved; the application can satisfy the service environment of the slip sheet under the condition of reducing the noble metal elements.
Drawings
FIG. 1 shows the carbide size and distribution (2.5K) of the slider matrix in the examples of the present application.
FIG. 2 shows the carbide size and distribution (10K) of the slider matrix in the examples of the present application.
FIG. 3 is a schematic structural diagram of a slider according to an embodiment of the present application.
Detailed Description
Referring to fig. 1-3 in combination, an alloy material is prepared from the following raw materials in percentage by mass: 0.80-1.25%, si 0.15-0.4%, mn 0-0.45%, cr 0-1.75%, and Fe and impurities in balance. The sliding vane material has low or no content of noble metal elements, can effectively reduce the cost of alloy materials, further reduce the cost of the sliding vane and a compressor, and solves the problems of high cost and poor competitiveness of the existing compressor; the part processing technology is simple, and the carbides distributed in a dispersing mode guarantee good abrasion resistance. The material does not contain W, mo, V and Cr noble alloy elements, the types or the contents of the noble alloy elements are greatly reduced, and the problems of high alloy elements, high material acquisition energy consumption and high resource consumption of the sliding sheet material in the prior art can be solved;
the application also discloses some embodiments, wherein the alloy material is prepared from the following raw materials in percentage by mass: 0.80-1.25%, si 0.15-0.4%, mn 0-0.45%, cr 1.2-1.75%, and Fe and impurities in balance. The material W, mo, V and Cr has greatly reduced noble alloy element types or contents, and can solve the problems of high alloy element content, high material acquisition energy consumption and high resource consumption of the sliding blade material in the prior art.
The application also discloses some embodiments, the alloy material is prepared from the following raw materials in percentage by mass: 0.91-1.10% of C, 0.25-0.35% of Si, 0.20-0.40% of Mn, 1.40-1.75% of Cr, and the balance of Fe and impurities; the present application also discloses some embodiments, the impurities comprise S, P. The material does not contain W, mo, V and Cr noble alloy elements, the types or the contents of the noble alloy elements are greatly reduced, and the problems of high alloy elements, high material acquisition energy consumption and high resource consumption of the sliding sheet material in the prior art can be solved; and the manufactured sliding vane can be ensured to meet the requirement of the compressor.
The application also discloses some embodiments, the alloy material is prepared from the following raw materials in percentage by mass: 0.80-1.25%, si 0.15-0.4%, mn 0-0.45%, cr 0-0.35%, and Fe and impurities in balance.
The application also discloses some embodiments, the alloy material is prepared from the following raw materials in percentage by mass: 0.95-1.15%, si 0.25-0.35%, mn 0.20-0.40%, cr 0.15-0.30%, the balance Fe and impurities.
The present application also discloses embodiments in which the matrix structure of the alloy material includes high carbon martensite and uniformly distributed carbides.
The present application also discloses embodiments in which the carbide particles in the matrix structure of the alloy material have a size of 0.3 to 1.5 microns.
The application also discloses some embodiments, and the surface microhardness of the alloy material is 600-900HV.
The application also discloses some embodiments, and the surface microhardness of the alloy material is 700-820HV. The alloy material can be used for preparing the sliding vane to meet the use requirement of a compressor, and the surface microhardness of the sliding vane is 600-900HV, preferably 700-820HV; the matrix structure of the slip sheet is high-carbon martensite and carbide which is uniformly distributed, the particle size of the carbide is 0.3-1.5 microns, and the slip sheet has excellent strength and wear resistance.
Strengthening method and mechanism: according to
1. Element proportioning: for the high Cr stainless steel and the W-Mo-V high speed steel which are used at present, the high alloy material has better hardenability, and the W, the Mo and the Cr are easy to form carbide.
2. The heat treatment strengthening method comprises the following steps: according to the element level of the scheme, according to an empirical formula of the critical temperature of the steel, the austenitizing temperature is determined to be Ac1+ (30-50) DEG C, namely 820-860 ℃, the temperature is kept for 30-45 minutes, carbon atoms in a matrix are fully expanded, the structure is fully austenitized, and when the alloy material is rapidly cooled in an oil bath, fine needle-shaped high-carbon martensite can be obtained, and the hardness of the matrix is high. And then heating for the second time to 150-200 ℃, preserving the heat for 60-150min, in order to reduce the internal stress of rapid cooling in the first-stage structure, obtaining a more stable structure of the alloy matrix material, and simultaneously after certain heat preservation, the carbon diffusion is helpful for the refinement of carbide.
3. High carbon martensite and uniformly distributed carbides: as shown in figure 1, SEM microcosmic of the alloy material under 10K magnification shows that the matrix is basically all acicular tempered martensite, and according to the scheme, the mass fraction of C reaches 0.8-1.25%, most tempered martensite is high in carbon content fraction, and simultaneously, a small part of carbide distributed in a spherical/near-spherical manner belongs to a second hard phase, the hardness of hard particles is generally considered to be 1200-2000HV, the carbide distributed uniformly in a dispersion manner is pinned in the matrix, and the denser the nailing and rolling is, the smaller the particles are, and the higher the mechanical property and the wear resistance of the alloy material are. On the contrary, after the carbide is aggregated, the peripheral carbon is not fully dissolved, the local structure is not uniform, the anisotropy of the material is obvious, and the cutting effect and the peeling effect of the carbide on the matrix are enhanced under the high-stress service. The optimal practical test size of the scheme is 0.3-1.5 microns, and the alloy material can meet the wear resistance of the compressor slip sheet.
The application also discloses a preparation method of the alloy material, which comprises the following steps:
step (1): preparing the raw materials in any embodiment into a blank;
step (2): heating the blank to 820-860 ℃, and carrying out heat preservation for 30-45min for the first time so as to fully austenitize the interior of the blank; then cooling to obtain a first-grade material; cooling to below the martensite transformation point, cooling to the oil pool temperature (less than 150 ℃) in oil in normal processing, taking out, and standing at room temperature for the next process.
And (3): and heating the primary material to 150-200 ℃, and carrying out secondary heat preservation for 60-150min to obtain the alloy material.
The material adopted in the application mainly comprises C, si, mn and Cr alloy elements, the types and the contents of the alloy elements are greatly reduced, and the manufacturing cost is obviously reduced; in addition, by adopting the preparation method, the carbide of the material is fine and is dispersed, and the material has the advantages of high hardness and good wear resistance; compared with the ceramic and aluminum alloy sliding vane material in the related technology, the sliding vane material has the linear expansion coefficient equivalent to that of the sliding vane material used at present, and the phenomenon of blocking during high-temperature operation is avoided; the density of the alloy material is basically between 7.81 and 7.85g/cm & lt 3 & gt, and compared with the existing high-speed steel sliding vane material for mass production, the density of the alloy material is light by 6 percent, and the vibration noise of the compressor can be further reduced.
The application also discloses a plurality of embodiments, and the second heat preservation time is 100-120min.
The present application also discloses some embodiments, in the step (2), the cooling includes the following steps: the cooling comprises the following steps: cooling is carried out in an oil cooling medium.
The application also discloses a sliding vane which is made of the alloy material; or the sliding sheet is made by adopting the preparation method of the alloy material. The sliding vane is used in the compressor, namely the sliding vane can be arranged in a sliding vane groove of the cylinder and is matched with the roller for use, and the sliding vane is provided with a sliding vane head part and a sliding vane tail part; the head of the slip sheet is used for abutting against the roller, and the tail of the slip sheet is provided with a groove which can be connected with the spring in a matching way.
The application also discloses a compressor, and the slip sheet is the slip sheet. The sliding vane is exemplified by a single-cylinder rotor compressor structure, but is not limited to a single-cylinder structure, and can be a double-cylinder rotor compressor or a multi-cylinder rotor compressor, and relates to a volume change cavity form formed by the sliding vane, a cylinder and a roller, or a structure formed by the sliding vane to form a sealed container, or the like. The compressor comprises a pump body assembly, a motor assembly, a shell and a liquid distributor assembly, wherein the pump body assembly comprises a crankshaft, an upper bearing, a lower bearing, an air cylinder, a sliding vane and a roller.
The application also discloses an air conditioner, and the compressor is the compressor.
In the embodiment of the present application, taking a single-cylinder rotor compressor as an example, a typical rotor compressor pump assembly is composed of a driving part crankshaft, and other components constituting a sealed container, such as a roller, a cylinder, an upper cylinder cover, a lower cylinder cover, and a sliding vane, and also has a noise suppressor for suppressing noise.
The high carbon/high carbon chromium sliding vane of the present application, the sliding vane material comprises 0.80-1.25% C, 0.15-0.4% Si, 0-0.45% Mn, not more than 1.75% Cr, the balance Fe and impurities. The sliding sheet material is low in raw material cost, easy to obtain, low in mass of Cr, ni and Mo, free of valuable metal elements W, V, capable of saving resources and reducing environmental pollution, high in strength, high in hardness and high in toughness after heat treatment of carbide refining, and suitable for a positive displacement rolling rotor compressor.
Examples
First group of embodiments
The sliding sheet material in the group of the embodiment has a small mass fraction of alloy elements, wherein the mass fraction of the alloy elements comprises 0.80-1.25% of C, 0.15-0.4% of Si, 0.20-0.40% of Mn, 0.15-1.75% of Cr and the balance of Fe and S, P impurities; the impurity S, P is not higher than 0.035%.
The element ratios of the materials of the sliding pieces in the group of the present embodiment are shown in table 1, examples 1 to 4 are element ratios within the ranges described in the present embodiment, high-speed steel and martensitic stainless steel in the prior art are used as comparative examples, and it is to be noted that the element mass percentages are obtained by using a spark discharge atomic emission spectroscopy analysis with reference to national standard GB/T14203.
Example 1, 0.99% of C, 0.21% of Si, 0.28% of Mn, 0.4% of Cr, and the balance of Fe and S, P impurities;
example 2:0.97% of C, 0.24% of Si, 0.29% of Mn, 1.0% of Cr and the balance of Fe and S, P impurities;
example 3, 1.02% of C, 0.28% of Si, 0.25% of Mn, 1.4% of Cr, the balance being Fe and S, P impurities;
example 4, 0.99% of C, 0.27% of Si, 0.28% of Mn, 1.63% of Cr, and the balance of Fe and S, P impurities;
example 5, 0.91% of C, 0.20% of Si, 0.25% of Mn, 1.40% of Cr, and the balance of Fe and S, P impurity;
example 6, 1.10% of C, 0.35% of Si, 0.40% of Mn, 1.75% of Cr, and the balance of Fe and S, P impurity;
example 7, 0.8% C, 0.15% Si, 0.2% Mn, 1.2% Cr, the balance Fe and S, P impurities;
example 8, 0.95% C, 0.25% Si, 0.40% Mn, 0.35% Cr, the balance Fe and S, P impurities.
Example 9, 1.25% C, 0.4% Si, 0.45% Mn, 0.15% Cr, the balance Fe and S, P impurities;
example 10, 1.15% C, 0.35% Si, 0.35% Mn, 0.30% Cr, the balance Fe and S, P impurities.
TABLE 1 elemental composition (in% by mass) of the alloy materials of the respective examples of the first example group
Figure BDA0003859286520000081
TABLE 2 SLIDING HEAT TREATMENT PROCESS AND HARDNESS IN THE EXAMPLES OF THE FIRST EXAMPLE GROUP AND THE PRIOR ART
Figure BDA0003859286520000091
The heat treatment strengthening method in table 2 is used to increase the hardness of the base material and to uniformly distribute the carbide. The first step is to make the sliding vane material austenitized and hardened at high temperature, the high temperature heating of the sliding vane material of the above examples 1-10 is 820-860 ℃, the temperature is preserved for 30-45min for the first time, so that the inner part is fully austenitized, and then the sliding vane material is rapidly cooled in an oil cooling medium. The hardness in the above is a range value because 3 samples were actually tested, and each sample measured at least 2 positions, so that it was at least 6 values; the fluctuation is in the range of ± 20HV in consideration of material fluctuation and test fluctuation.
And secondly, homogenizing the matrix structure of the sliding sheet, heating the material or the part in the first step to a lower temperature, such as 150-200 ℃, and preserving the heat for 60-150min, preferably 100-120min for the second time, so as to fully ensure that the sliding sheet material in the scheme has higher hardness or wear resistance and carbide in the matrix structure is distributed uniformly.
Through the heat treatment process provided by the application, the microhardness of the surface of the slip sheet reaches 600-900HV, and according to the process temperature of Table 2, the hardness of each slip sheet material is 680-820HV1; the sliding vane matrix structure is high-carbon martensite and carbide which is uniformly distributed, the particle size of the carbide is 0.3-1.5 microns, and the sliding vane matrix structure has excellent strength and wear resistance.
TABLE 3 relative amount of wear for each of the first example set
Figure BDA0003859286520000101
The wear amount of each slide material was measured by a Falex wear tester, and in examples 1 to 10, among which, the wear resistance was superior in examples 4 and 9, the wear amount was equivalent to that of high speed steel, and in examples 3 to 4, the wear amount was equivalent to that of martensitic stainless steel, and the comparison of the wear amounts is shown in fig. 2.
Second group of embodiments
The material of the sliding piece in the embodiment group does not contain or contains trace Cr alloy element, and does not contain or contains trace Mn alloy element; wherein, 0.8 to 1.25 percent of C, 0.15 to 0.40 percent of Si, 0.15 to 0.45 percent of Mn, not more than 0.35 percent of Cr, and the balance of Fe and S, P impurities; impurity S, P is no higher than 0.035%.
The elemental composition of the slider material in this example set is shown in Table 4, examples 5-7 are elemental compositions in the ranges described herein, and high speed steels and martensitic stainless steels are comparative examples.
Example 11, 0.82% C, 0.27% Si, 0.30% Mn, 0.15% Cr, the balance Fe and S, P impurities;
example 12, 1.05% C, 0.24% Si, 0.29% Mn, the balance Fe and S, P impurities;
example 13, 1.21% C, 0.18% Si, 0.33% Mn, 0.31% Cr, the balance Fe and S, P impurities;
example 14, 1.25% C, 0.24% Si, balance Fe and S, P impurities;
example 15, 1.21% C, 0.18% Si, 0.33% Mn, 0.31% Cr, the balance Fe and S, P impurities;
example 16, 1.05% of C, 0.24% of Si, 0.29% of Mn, and the balance of Fe and S, P impurity;
example 17, 1.21% C, 0.18% Si, 0.33% Mn, 0.31% Cr, the balance Fe and S, P impurities.
TABLE 4 elemental composition (in% by mass) of the materials of the slider in the second example group
Figure BDA0003859286520000111
TABLE 5 strengthening Heat treatment Process and hardness of comparative examples in the second example group
Figure BDA0003859286520000121
By adopting the heat treatment strengthening method in the table 5, in the examples 11 to 17, an atmosphere protection multipurpose furnace or a vacuum quenching furnace is used, the furnace temperature control precision is +/-5 ℃, and the sliding sheet material of the group of the examples is subjected to high-temperature quenching at the quenching temperature of 790 to 820 ℃; and then, the metallographic structure and the wear-resistant hard phase are further uniformly refined in one step, the process temperature is 150-200 ℃, the temperature is kept for 60-150min, preferably 100-120min, the actual set temperature is 180 +/-10 ℃, and the higher hardness is finally obtained according to the equipment and the temperature control conditions of the equipment.
Considering that the materials of examples 11-17 contain low alloying elements, especially high carbide-forming elements, the hardness of the materials of examples 13 and 14 is lower than that of examples 11 and 12, and the hardness of example 6 is 70HV1 lower than that of example 3.
The wear of each slider material was also tested using a Falex wear tester, since example 7 contains a higher percentage by mass of C and a small amount of Cr strongly carbide alloying element, the hardness and relative wear resistance were better than those of examples 5 and 7, even to the same level as those of examples 2 and 3. According to the friction experiment result of the material, the abrasion level of the martensite stainless steel comparative example is also achieved in the example 7, namely the sliding vane material and the heat treatment process are adopted, so that the sliding vane can meet the use requirement of the compressor.
TABLE 6 relative amount of wear of each example in the second example set
Figure BDA0003859286520000131
To sum up, the technical problem to be solved by the application lies in providing a sliding vane for a rotor compressor and a heat treatment method for enhancing the abrasion resistance of a base body, the sliding vane is low in alloy element content, low in material acquisition energy consumption, and capable of greatly reducing part cost, the sliding vane material and other parts forming a pump body have good matching performance, and the performance and the reliability of the compressor are guaranteed.
The alloy elements adopted by the second embodiment group are few, the cost is low, the abrasion loss is slightly insufficient compared with that in the first embodiment group, the abrasion trace width can also reach about 1078 microns in consideration of the precious metal elements with the mass production of not less than 15%, the abrasion trace width reaches the level equal to that of martensitic stainless steel, the cost performance is good, and a material solution can be provided for the material design of the sliding vane of the compressor.
Third group of embodiments
The present group of embodiments relates to the embodiments of the coefficient of linear expansion
Example 3.1
Samples of the alloys of examples 18-20 were used: examples 18-20, linear expansion coefficients of 10.0-11.2 ppm/. Degree.C at 20-200 deg.C
Example 3.2
Samples of the alloys of examples 21-24 were used: examples 21-24, linear expansion coefficients of 10.5-12.6 ppm/. Degree.C at 20-200 deg.C
TABLE 7 element ratios (in% by mass) of the third example group
Figure BDA0003859286520000141
Those skilled in the art will readily appreciate that the advantageous features of the above described modes can be freely combined, superimposed and combined without conflict.
The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed. The foregoing is only a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present application, and these modifications and variations should also be considered as the protection scope of the present application.

Claims (15)

1. The alloy material is characterized by being prepared from the following raw materials in percentage by mass:
0.80-1.25%, si 0.15-0.4%, mn 0-0.45%, cr 0-1.75%, and Fe and impurities in balance.
2. The alloy material as claimed in claim 1, wherein the alloy material is prepared from the following raw materials in percentage by mass: 0.80-1.25%, si 0.15-0.4%, mn 0-0.45%, cr 1.2-1.75%, the balance Fe and impurities.
3. The alloy material as claimed in claim 1, wherein the alloy material is prepared from the following raw materials in percentage by mass: 0.91-1.10% of C, 0.25-0.35% of Si, 0.20-0.40% of Mn, 1.40-1.75% of Cr, and the balance of Fe and impurities;
and/or the impurities comprise S, P.
4. The alloy material as claimed in claim 1, wherein the alloy material is prepared from the following raw materials in percentage by mass: 0.80-1.25%, si 0.15-0.4%, mn 0-0.45%, cr 0-0.35%, and Fe and impurities in balance.
5. The alloy material as claimed in claim 1, wherein the alloy material is prepared from the following raw materials in percentage by mass: 0.95-1.15% by weight of C, 0.25-0.35% by weight of Si, 0.20-0.40% by weight of Mn, 0.15-0.30% by weight of Cr, and the balance of Fe and impurities.
6. The alloy material of claim 1, wherein the matrix structure of the alloy material comprises high carbon martensite and uniformly distributed carbides.
7. The alloy material of claim 6, wherein the carbide particles in the matrix structure of the alloy material are 0.3 to 1.5 microns in size.
8. The alloy material of claim 1, wherein the surface micro-hardness of the alloy material is 600-900HV.
9. The alloy material of claim 1, wherein the alloy material has a surface microhardness of 700 to 820HV.
10. The preparation method of the alloy material is characterized by comprising the following steps of:
step (1): forming the feedstock of any of claims 1-9 into a billet;
step (2): heating the blank to 820-860 ℃, and carrying out heat preservation for 30-45min for the first time so as to ensure that the interior of the blank is fully austenitized; then cooling to obtain a first-grade material;
and (3): and heating the primary material to 150-200 ℃, and carrying out secondary heat preservation for 60-150min to obtain the alloy material.
11. The method for preparing an alloy material according to claim 10, wherein the second holding time is 100 to 120min.
12. The method for preparing an alloy material according to claim 10, wherein in the step (2), the cooling comprises the steps of: cooling is carried out in an oil cooling medium.
13. A sliding piece, characterized in that it is made of an alloy material according to any one of claims 1 to 9; or, the slide sheet is made by the preparation method of the alloy material of any one of claims 10 to 12.
14. A compressor, wherein said vane is as recited in claim 13.
15. An air conditioner characterized in that said compressor is the compressor as set forth in claim 14.
CN202211157211.7A 2022-09-22 2022-09-22 Alloy material and preparation method thereof, sliding vane, compressor and air conditioner Pending CN115558847A (en)

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Publication number Priority date Publication date Assignee Title
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JP2002242927A (en) * 2001-02-16 2002-08-28 Denso Corp Thrust bearing
JP2010255046A (en) * 2009-04-24 2010-11-11 Nippon Steel Corp Method for manufacturing high carbon steel rail
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0033403A1 (en) * 1980-01-31 1981-08-12 Ford Motor Company Method of treating the surfaces of high carbon steel bodies and bodies of high carbon steel
RU2139946C1 (en) * 1996-04-15 1999-10-20 Ниппон Стил Корпорейшн Rails from low-alloyed heat-treated perilit steel featuring high wear resistance and weldability and method of their production
JP2002242927A (en) * 2001-02-16 2002-08-28 Denso Corp Thrust bearing
JP2010255046A (en) * 2009-04-24 2010-11-11 Nippon Steel Corp Method for manufacturing high carbon steel rail
CN102174936A (en) * 2011-03-09 2011-09-07 松下·万宝(广州)压缩机有限公司 Slide block for rotary type compressor and manufacturing method thereof

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