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Manufacturing method of compressor crankshaft

A technology of a compressor crankshaft and a manufacturing method, applied in the field of powder metallurgy, can solve the problems of easily polluted environment, low production efficiency, large energy consumption of casting process, etc.

Inactive Publication Date: 2018-04-06
ANHUI BOGUTE ELECTRICAL & MECHANICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The crankshaft is a key component of the rotary air-conditioning compressor, so it has high performance requirements. The existing manufacturing methods in the prior art are very complicated from mold manufacturing to specific production processes, and due to the occurrence of pores and slag inclusion defects in the product , the scrap rate is high, and at the same time, it is necessary to leave a large margin for the manufacture of the blank, and then process it through multiple processes, the material utilization rate is low, the processing process is complicated, and the production efficiency is low. Need to find a suitable manufacturing method for air conditioner compressor crankshaft

Method used

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  • Manufacturing method of compressor crankshaft

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Effect test

Embodiment 1

[0016] A method for manufacturing a compressor crankshaft, the preparation method is as follows:

[0017] (1) Mix iron powder, aluminum powder, copper powder, tin powder, niobium powder, vanadium powder, manganese, chromium, and nano-titanium dioxide powder at 80-100°C for 60-80 minutes, then heat to 180-200°C , then add boron, silicon nitride, cuprous thiocyanate, antimony trisulfide powder, and carbon powder, cool to 100-120°C, put into the mold, press into a billet, and then naturally cool to room temperature, and the pressing pressure is 100-120°C. 200MPa;

[0018] (2) Place the green compact obtained in step (1) in a closed sintering furnace for sintering. The heating process of sintering is that the heating rate between room temperature and 900 °C is 14 °C / min, and the temperature is kept at 900 °C for 30 minutes. The heating rate from ℃ to 1320℃ is 9℃ / min, and the temperature is kept at 1320℃ for 60min. The pressure in the closed sintering furnace is not more than 0.02...

Embodiment 2

[0021] Embodiment 2: a kind of manufacturing method of compressor crankshaft, preparation method is as follows:

[0022] (1) Mix iron powder, aluminum powder, copper powder, tin powder, niobium powder, vanadium powder, manganese, chromium, and nano-titanium dioxide powder at 80-100°C for 60-80 minutes, then heat to 180-200°C , then add boron, silicon nitride, cuprous thiocyanate, antimony trisulfide powder, and carbon powder, cool to 100-120°C, put into the mold, press into a billet, and then naturally cool to room temperature, and the pressing pressure is 100-120°C. 200MPa;

[0023] (2) Place the green compact obtained in step (1) in a closed sintering furnace for sintering. The heating process of sintering is that the heating rate between room temperature and 900 °C is 14 °C / min, and the temperature is kept at 900 °C for 30 minutes. The heating rate from ℃ to 1320℃ is 9℃ / min, and the temperature is kept at 1320℃ for 60min. The pressure in the closed sintering furnace is not...

Embodiment 3

[0028] A method for manufacturing a compressor crankshaft, the preparation method is as follows:

[0029] (1) Mix iron powder, aluminum powder, copper powder, tin powder, niobium powder, vanadium powder, manganese, chromium, and nano-titanium dioxide powder at 80-100°C for 60-80 minutes, then heat to 180-200°C , then add boron, silicon nitride, cuprous thiocyanate, antimony trisulfide powder, and carbon powder, cool to 100-120°C, put into the mold, press into a billet, and then naturally cool to room temperature, and the pressing pressure is 100-120°C. 200MPa;

[0030] (2) Place the green compact obtained in step (1) in a closed sintering furnace for sintering. The heating process of sintering is that the heating rate between room temperature and 900 °C is 14 °C / min, and the temperature is kept at 900 °C for 30 minutes. The heating rate from ℃ to 1320℃ is 9℃ / min, and the temperature is kept at 1320℃ for 60min. The pressure in the closed sintering furnace is not more than 0.02...

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Abstract

The invention provides a manufacturing method of a compressor crankshaft and relates to the field of powder metallurgy. The preparation method comprises the following steps that iron powder, aluminumpowder, copper powder, tin powder, niobium powder, vanadium powder, manganese, chromium and nanosized titania powder are evenly mixed and stirred under the temperature of 80-100 DEG C for 60-80 min, then heating is conducted till the temperature is 180-200 DEG C, then boron, silicon nitride, copper thiocyanate, antimonous sulfide powder and carbon powder are added, cooling is conducted till the temperature is 100-120 DEG C, then a mixed material is loaded into a mould and pressed into a blank, and then natural cooling is conducted till the temperature is the room temperature, wherein the pressing pressure is 100-200 MPa; and the obtained pressed blank is placed into a closed sintering furnace to be sintered, in the sintering temperature-increasing process, the temperature increasing speedbetween the room temperature and 900 DEG C is 14 DEG C / min, and heat preservation is conducted for 30 min under the temperature of 900 DEG C. The metal crystalline phase is clear, the tensile strength, the yield strength and abrasion resistance are all very good, processing cannot change the characteristics of original materials, and processing complexity caused due to the fact that for meeting performance requirements, the processed material is subjected to other treatment is avoided.

Description

technical field [0001] The invention relates to the field of powder metallurgy, in particular to a method for manufacturing a compressor crankshaft. Background technique [0002] The crankshaft is a key component of the rotary air-conditioning compressor, so it has high performance requirements. The existing manufacturing methods in the prior art are very complicated from mold manufacturing to specific production processes, and due to the occurrence of pores and slag inclusion defects in the product , the scrap rate is high, and at the same time, it is necessary to leave a large margin for the manufacture of the blank, and then process it through multiple processes, the material utilization rate is low, the processing process is complicated, and the production efficiency is low. It is necessary to find a suitable manufacturing method for the air conditioner compressor crankshaft. Contents of the invention [0003] Aiming at the deficiencies of the prior art, the invention...

Claims

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Application Information

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IPC IPC(8): B22F5/00B22F1/00
CPCB22F5/00B22F1/0003B22F2998/10B22F3/02B22F3/1007B22F2003/248
Inventor 刘朝能黄先州葛勤贵袁正发宛新芬
Owner ANHUI BOGUTE ELECTRICAL & MECHANICAL TECH CO LTD
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