Powder metallurgy technology has a series of advantages such as significant energy saving, material saving, excellent performance, high product precision and good stability. It is very suitable for mass production and has attracted much attention from the industry.
Powder metallurgy is a process that uses metal powder as raw material to obtain parts through shaping and sintering. So, how are powder metallurgy parts produced?
01
Basic steps of powder metallurgy process
1) Preparation of raw material powder.
2) The powder is formed into a compact of the desired shape. The purpose of molding is to produce a compact of a certain shape and size, and to have a certain density and strength. The most commonly used method is compression molding.
3) Sintering of compacts. Sintering is a key process in the powder metallurgy process. The formed compact is then sintered to obtain the required final physical and mechanical properties.
4) Post-processing of products. Post-sintering treatment can be done in a variety of ways according to different product requirements. Such as finishing, oil immersion, machining, heat treatment and electroplating.
02
Application of powder metallurgy in the field of automotive parts
Due to the superior performance and relatively low cost of powder metallurgy, powder metallurgy materials are increasingly used in automotive parts. At present, the average amount of powder metallurgy products used in each car in Europe and the United States reaches about 20kg. It is expected that more powder metallurgy processes will be used to produce auto parts in the future.
For example, automobile compressor parts include a series of parts such as cylinders, cylinder heads, valves, valve plates, crankshafts, connecting rods and piston rods. The use of powder metallurgy parts is a comprehensive consideration of its advantages: powder metallurgy processing can use molds for mass production, products are consistently formed, and alloy elements can be added to raw materials to enhance product performance; powder metallurgy has higher processing accuracy and more focused Low, it can be formed in one go with basically no cutting, which can save costs.
