NEWS
23
2022
-
05
Processing method after powder metallurgy
Author:
Powder metallurgy post-treatment can prevent rusting of processed parts, improve wear resistance, precision, etc. of parts, so what is the post-powder metallurgy treatment method?
Method 1: Improve the accuracy of machined parts
Usually, the sintered parts are loaded into a shaping die with a similar structure to the pressing die, and another pressing process is performed on the press. This post-processing method can improve the dimensional accuracy of the processed parts and reduce the surface roughness of the parts.
Method 2: Oil intrusion treatment for parts
Put the sintered powder metallurgy parts into hot oil at 100-200℃ or make the oil penetrate into the pores of the powder processed parts under vacuum. This post-processing method can prevent the parts from rusting and improve the wear resistance.
Method 3: Improve wear resistance of parts
Iron-based powder metallurgy parts are treated in water vapor at 500-600 °C to form a hard and dense oxide film on the inner and outer surfaces of the parts. This method can improve the wear resistance of the parts after powder metallurgy processing, and can also prevent the parts from rusting. .
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