Entire Process of Powder Metallurgy
Any metal that can be made into powder can be used as raw material powder.
The main raw materials are iron, copper, etc.
Iron powder is mixed with metal powder of different compositions at a specified ratio.
The mixed metal powder is compacted in an automatic compaction press using a high-precision die.
The green compact is sintered in a gas atmosphere at a temperature below its melting point.
This is a method of sintering at a temperature of 1,200°C or higher to achieve high density and strength.
Post-treatment and finishing
Sizing and coining
After the product has been compacted and sintered, it is placed back into the die and pressure is applied to improve dimensional accuracy and increase density.
Machine processing includes drilling and polishing.
The pores of the sintered parts are impregnated with lubricant to prevent the internal lubricant from being consumed and to prolong the lubrication effect.
The metal parts are heated and cooled to achieve the desired hardness and properties.
Surface treatment is performed to improve the corrosion and wear resistance of products. Steam and plating treatments are available.
* Laser quenching