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Compressor connecting rod and manufacture method thereof

A manufacturing method and compressor technology, which is applied in the field of compressors, can solve problems such as wear, and achieve the effects of improving wear resistance, improving overall wear resistance, and reducing scratches and wear

Inactive Publication Date: 2016-10-12
淮安市新盛压缩机配件有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, when the hardness of the large hole end is high and the hardness of the small hole end is low, it can not only reduce the wear of the large hole end, but also reduce the wear of the small hole end to the piston pin, thereby solving the problem of the high or low hardness of the body. When, one of the ends must cause severe wear and tear

Method used

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  • Compressor connecting rod and manufacture method thereof
  • Compressor connecting rod and manufacture method thereof

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Effect test

Embodiment 1

[0054] The iron powder raw material is pressed and sintered to obtain a powder metallurgy connecting rod blank, and the hardness of the connecting rod blank is 44HRB. The two ends of the connecting rod are rough-bored and fine-bored to obtain large and small holes, the size of the large hole is 13.970mm, and the size of the small hole is 6.970mm. The large holes are honed, then cleaned and then steam treated. The water vapor treatment step is as follows: first, blow nitrogen at 600° C. and keep it for 2 hours, and then pass water vapor for 2 hours of bluing treatment. The size of the large hole after treatment is 14.016mm. Then the small hole is honed to remove the bluish layer on the inner wall of the small hole. The size of the small hole after honing is 7.003mm. Wash the body after handling. Then the body is phosphating to form a phosphating layer on the inner wall of the small hole. Finally, the connecting rod is brushed to obtain a large-pore reinforced powder metall...

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Abstract

The invention discloses a compressor connecting rod and a manufacturing method thereof. The compressor connecting rod includes a body, one end of the body is provided with a first hole, and the other end of the body is provided with a second hole. The radial size of the first hole is larger than the radial size of the second hole, and the inner wall of the first hole is provided with a wear-resistant layer. According to the compressor connecting rod of the embodiment of the present invention, the bluing layer can improve the surface hardness and wear resistance, strengthen the first channel, greatly improve the wear resistance of the inner wall surface, and reduce the scratch and wear of the first channel , at the same time, the second hole will not be strengthened synchronously, which avoids the increased wear of the piston pin matched with the second hole, improves the overall wear resistance of the compressor connecting rod, prolongs the service life, and effectively solves the two problems of the connecting rod The channel cannot realize the problem of different hardness.

Description

technical field [0001] The present invention relates to the technical field of compressors, and more particularly, to a compressor connecting rod and a method for manufacturing the compressor connecting rod. Background technique [0002] The connecting rod has a large hole and a small hole. The large hole end of the connecting rod is matched with the cast iron crankshaft countershaft, and the small end hole of the connecting rod is matched with the piston pin. During the operation of the compressor, the large hole of the connecting rod is in a state of high-speed rotation relative to the countershaft of the crankshaft, and the working surface of the large hole of the connecting rod is prone to scratches and wear, while the end of the small hole of the connecting rod is in a state of torsion relative to the piston pin, and the small end hole High hardness can cause wear on the piston pin surface. [0003] In the related technology, the processing technology scheme of the con...

Claims

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Application Information

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IPC IPC(8): F04B39/00F16C7/02B23P15/00
CPCF04B39/00B23P15/00B23P2700/04F16C7/023
Inventor 张文瑞
Owner 淮安市新盛压缩机配件有限公司
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