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A kind of preparation method of rocking block of air conditioner compressor

A technology for air-conditioning compressors and raw material preparation, applied in metal processing equipment, transportation and packaging, etc., can solve the problems of poor dimensional accuracy of parts, shape design restrictions, and high production costs, and achieve poor dimensional accuracy, reduced processing costs, and production. low cost effect

Active Publication Date: 2021-06-22
湖南英捷高科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are many methods for preparing such rocking blocks, such as machining, precision casting, forging, etc., but these processes have various disadvantages to varying degrees: for example, the high hardness of materials required for traditional machining of rocking blocks makes processing difficult, Subsequent processing is cumbersome, so its preparation cost is high and efficiency is low; precision casting parts have poor dimensional accuracy, rough surface, limited shape design, easy to produce element segregation, shrinkage cavity, trachoma defects and other deficiencies; while forging The performance is superior, but its cost is high, and it is subject to the status of the parts
[0004] Metal injection molding is a processing method that can produce high-performance special-shaped metal parts with complex shapes in large quantities at a relatively low production cost, but there is no report using metal injection molding in the existing technology for preparing rockers

Method used

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  • A kind of preparation method of rocking block of air conditioner compressor
  • A kind of preparation method of rocking block of air conditioner compressor
  • A kind of preparation method of rocking block of air conditioner compressor

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example 1

[0046] A kind of preparation technology of air conditioner compressor rocking block, its process is as follows:

[0047] A. Raw material preparation: the matrix material is 440C stainless steel gas atomized powder with an average particle size of 6um provided by the British Osprey company. The chemical composition of the powder is shown in Table 1. figure 1 It is the SEM topography of 440C stainless steel powder;

[0048] Table 1 Chemical composition of 440C stainless steel powder

[0049] Binder: by mass percentage, get paraffin wax (PW) 62%, polyethylene (PE) 17%, carnauba wax (CW) 18%, stearic acid (SA) 3%, at 120 ℃ of temperature in the mixer Mix in medium for 4h to make binder;

[0050] C. Preparation of feeding material: mixing and granulating the binder and base material 440C stainless steel powder according to the volume ratio of 43%:57% to make feeding material. The mixing temperature is 120°C, and the speed of the mixer is 85r / min , the mixing time is 4h;

[00...

example 2

[0056] A kind of preparation technology of air conditioner compressor rocking block, its process is as follows:

[0057] A. Raw material preparation: the matrix material is 440C stainless steel gas atomized powder with an average particle size of 6um provided by the British Osprey company. The chemical composition of the powder is shown in Table 1. figure 1 It is the SEM topography of 440C stainless steel powder;

[0058] B, preparation binder: by mass percentage, get paraffin wax (PW) 65%, polyethylene (PE) 19%, carnauba wax (CW) 15%, stearic acid (SA) 1%, at 130 ℃ temperature Mix in a mixer for 3 hours to prepare the binder;

[0059] C. Preparation of feed: Mix the binder and base material 440C stainless steel powder according to the volume ratio of 45%:55%, and granulate to make feed. The mixing temperature is 130°C, and the speed of the mixer is 90r / min , the mixing time is 3h;

[0060] D. Injection molding: use the injection molding machine to inject the feed into the ...

example 3

[0065] A kind of preparation technology of air conditioner compressor rocking block, its process is as follows:

[0066] A. Raw material preparation: the matrix material is 440C stainless steel gas atomized powder with an average particle size of 6um provided by the British Osprey company. The chemical composition of the powder is shown in Table 1. figure 1 It is the SEM topography of 440C stainless steel powder;

[0067] B, prepare binding agent: by mass percentage, get paraffin wax (PW) 70%, polyethylene (PE) 20%, carnauba wax (CW) 9%, stearic acid (SA) 1%, at 140 ℃ of temperature Mix in a mixer for 2 hours to prepare the binder;

[0068] C. Preparation of feeding material: mixing and granulating the binder and base material 440C stainless steel powder according to the volume ratio of 48%:52% to make feeding material. The mixing temperature is 140°C, and the speed of the mixer is 100r / min , the mixing time is 2h;

[0069] D. Injection molding: use an injection molding mac...

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Abstract

The invention discloses a method for preparing rocking blocks of air-conditioning compressors. The 440C stainless steel powder base material and the binder are mixed and granulated to obtain uniform feeding; and then the feeding is injected into a mold cavity by injection molding technology to obtain The product is green; then the binder in the green body is removed by solvent degreasing and thermal degreasing processes, and sintered and densified, and finally heat-treated to obtain the rocker product of the air conditioner compressor. Compared with the prior art, the air conditioner compressor rocker produced by metal injection molding technology in the present invention has the characteristics of high processing efficiency, high dimensional accuracy, low production cost, and easy production automation, and can produce excellent performance and high quality Stable products, the tensile strength exceeds 850MPa, 60% better than similar products, reaching the international advanced level, and can well meet the needs of customers.

Description

technical field [0001] The invention relates to a preparation method of a rocking block, in particular to a preparation method of an air conditioner compressor rocking block. Background technique [0002] With the rapid development of the economy, the problem of energy shortage has become increasingly prominent, and the development of a green economy that is energy-saving and environmentally friendly is the focus of economic development in various countries. The compressor is a key component of the air conditioner. It compresses and drives the refrigerant. It continuously absorbs heat from one end of the low-pressure area into the refrigerant, and then sends it to the high-pressure area to dissipate it into the air to achieve the effect of adjusting the temperature. The development of miniaturized, low energy consumption, and green compressors is the key research and development direction of related companies. At present, the purpose of improving work efficiency and reducing...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/22B22F3/10B22F3/24B22F1/00B22F5/00
CPCB22F3/1007B22F3/1017B22F3/225B22F3/24B22F5/00B22F2003/248B22F2998/10B22F2998/00B22F1/103B22F1/10B22F2201/20
Inventor 李益民余勇何浩胡幼华王霄
Owner 湖南英捷高科技有限责任公司
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