Automobile clutch gear with sintered copper, aluminum and steel based on powder metallurgy technology and manufacturing method of automobile clutch gear

Abstract

The invention discloses an automobile transmission gear with sintered copper, aluminum and steel based on a powder metallurgy technology and a manufacturing method of the automobile transmission gear. The automobile transmission gear takes electrolytic iron powder as a base material and also comprises the following components in weight percentage: 20%-30% of waste steel powder, 1.2%-1.8% of copper powder, 1.2%-1.5% of manganese sulfide powder, 2%-3% of waste aluminum powder, 0.2%-0.6% of molybdenum disulfide, 1.2%-1.5% of chromium powder, 0.8%-1.2% of graphite, 1.2%-1.6% of micrometer acrawax with the size being less than 45 microns and 1.5%-1.8% of stearic acid with the size being less than 45 microns. According to the invention, the waste steel powder, the waste aluminum powder and alloy materials thereof are combined, a sintering process is adopted, and the characteristics of stable performance and few uncontrollable impurity elements of the smelted waste steel powder, thus being good for improving the performance stability of a powder metallurgy product; secondly, the clutch gear has the advantages of high equal division precision, good wear resistance and excellent gear face hardness and pressure resistance, and can meet factory requirements; and meanwhile, a production process is greatly simplified and can meet the requirements on large-bath rapid production and material supply.

Description

technical field [0001] The invention relates to the production of auto parts by powder metallurgy, in particular to an automobile clutch gear based on powder metallurgy technology for sintering copper-aluminum steel and a production method thereof. Background technique [0002] The existing automobile clutch gears are mainly made of 45 steel, 40Cr, 40CrNi and other materials, and the hardness of the tooth surface is HB>350. Fire → honing or grinding agent running-in, EDM running-in, etc., the gears produced have poor wear resistance, poor surface dimensional accuracy of finished products, and complicated processes, which are difficult to meet the needs of large-volume rapid production. Contents of the invention [0003] The object of the present invention is to provide an automobile clutch gear based on powder metallurgy technology sintered copper-aluminum steel and a manufacturing method thereof. The clutch gear produced by the invention has high equalization precisio...

AI Technical Summary

Problems solved by technology

[0002] The existing automobile clutch gears are mainly made of 45 steel, 40Cr, 40CrNi and other materials, and the hardness of the tooth surface is HB>350. Fire → honing or grinding agent running-in, EDM running-in, etc., the gears produced have poor wear resistance, the surface dimensional accuracy of the finished product is poor, and the process is also complicated, which is difficult to meet the needs of large-scale rapid production

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