Manufacturing method for balance weight of compressor and balance weight manufactured by using manufacturing method

A manufacturing method and technology of a balance block, which are applied in the field of balance blocks, can solve problems such as general low density, and achieve the effect of expanding the scope of use

Active Publication Date: 2014-04-02
舒思雄
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing high-manganese steel balance weights manufactured by powder metallurgy technology generally have a low density, generally below 7 g / cm3, which limits the use of balance weights of the same size within a limited volume range

Method used

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  • Manufacturing method for balance weight of compressor and balance weight manufactured by using manufacturing method

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Experimental program
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Effect test

Embodiment 1

[0023] A method for manufacturing a balance weight for a compressor, which is manufactured by powder metallurgy from alloy powder, comprising the following steps:

[0024] a) Put the raw materials including alloy powder and binder in a mixer and mix evenly. The weight percentage of each component of the raw material of alloy powder is: manganese (Mn) 17%, carbon (C) 0.5%, and the balance is Fe, and the binder accounts for 0.3-0.8% of the total weight of the first three components, and the binder is stearic acid.

[0025] b) sending the mixed materials into a powder press for compression molding to obtain a balance block compact;

[0026] c) Cover the outer surface of the balance block compact with a copper sheet, and then place it in a sintering furnace for sintering and solidification to manufacture a balance block sintered billet; the thickness of the copper sheet is 0.5mm; the sintering temperature is 1100°C;

[0027] d) Grinding and deburring the sintered body of the bala...

Embodiment 2

[0030] A method for manufacturing a balance weight for a compressor, which is manufactured by powder metallurgy from alloy powder, comprising the following steps:

[0031] a) Put the raw materials including alloy powder and binder in a mixer and mix evenly. The weight percentage of each component of the raw materials of alloy powder is: manganese (Mn) 20%, carbon (C) 1.0%, and the balance is Fe, and the binder accounts for 0.3-0.8% of the total weight of the first three components, and the binder is stearic acid.

[0032] b) sending the mixed materials into a powder press for compression molding to obtain a balance block compact;

[0033] c) Cover the outer surface of the balance block compact with a copper sheet, then place it in a sintering furnace for sintering and solidification to manufacture a balance block sintered billet; the thickness of the copper sheet is 5mm; the sintering temperature is 1150°C;

[0034] d) Grinding and deburring the sintered body of the balance b...

Embodiment 3

[0037] A method for manufacturing a balance weight for a compressor, which is manufactured by powder metallurgy from alloy powder, comprising the following steps:

[0038] a) Put the raw materials including alloy powder and binder in a mixer and mix evenly. The weight percentage of each component of the raw material of alloy powder is: manganese (Mn) 25%, carbon (C) 1.5%, and the balance is Fe, and the binder accounts for 0.3-0.8% of the total weight of the first three components, and the binder is stearic acid.

[0039] b) sending the mixed materials into a powder press for compression molding to obtain a balance block compact;

[0040] c) Cover the outer surface of the balance block compact with a copper sheet, and then place it in a sintering furnace for sintering and solidification to manufacture a balance block sintered blank; the thickness of the copper sheet is 10mm; the sintering temperature is 1200°C

[0041] d) Grinding and deburring the sintered body of the balance...

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Abstract

The invention relates to a manufacturing method for a balance weight of a compressor and a balance weight manufactured by using the manufacturing method. The balance weight of the compressor is manufactured by using alloy powder by a powder metallurgy method. The manufacturing method for the balance weight of the compressor is characterized by comprising the following steps of (a) placing raw materials comprising the alloy powder and adhesives in a blender mixer and uniformly mixing the raw materials; (b) feeding the mixed materials into a powder pressing machine, and performing compression moulding on the mixed materials to obtain a pressed blank of the balance weight; (c) covering copper plates on the outer surface of the pressed blank of the balance weight, placing the pressed blank of the balance weight in a sintering furnace, and sintering and solidifying the pressed blank of the balance weight to obtain a sintered blank of the balance weight; and (d) polishing the sintered blank of the balance weight and removing burs of the sintered blank of the balance weight. Compared with the prior art, the manufacturing method for the balance weight of the compressor and the balance weight manufactured by using the manufacturing method have the advantages that the density of the balance weight, which is manufactured by using the method, of the compressor is 7.5-8.0 grams per cubic centimeter, and the using range of the existing alloy for balance weights is greatly extended; and the balance weight has characteristics of zero magnetism, rust protection and the like, and can serve as a substitute product of various copper alloy balance weights and various stainless steel balance weight.

Description

technical field [0001] The invention relates to a method for manufacturing a balance weight for a compressor and a balance weight produced by the method. Background technique [0002] Balance weight is an important part of rotating objects such as compressor rotors. It plays the role of improving stress distribution, reducing noise and shock absorption. It is an indispensable auxiliary part of many mechanical equipment. In actual production, the shape, size and stress state of the mechanical device are different, and it is necessary to select a balance block with a different weight. The density of the alloy is an important parameter of the balance weight material, which directly determines the volume and weight of the balance weight. [0003] The existing high-manganese steel balance weights manufactured by powder metallurgy generally have a low density, generally below 7 g / cm3, which limits the use of balance weights of the same size within a limited volume range. Conten...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/16B22F1/00C22C38/04C22C38/60C22C38/38C22C38/12
Inventor 舒思雄
Owner 舒思雄
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