2024 powder metallurgy products process is what kind?

The process flow of powder metallurgy products is pulverized, molded, sintered and post-processed. powder metallurgy products process is:

1. Preparation of raw material powder. At present, the milling methods can be divided into two categories: mechanical method and physical chemical method. Mechanical crushing and atomization methods are mechanical methods; physical and chemical methods are divided into: electrochemical corrosion method, reduction method, chemical method, reduction-chemical method, vapor deposition method, liquid phase deposition method and electrolysis method. It is widely used in reduction method, atomization method and electrolysis method.

2, forming the blank block: the purpose of molding is to make a certain shape and size of the blank block, and has a certain density and hardness, many powder metallurgy products are directly molded out of the final size and shape. The molding method is basically divided into pressure molding and non-pressure molding. Pressure molding is widely used in the press molding.

3. Sintering of the blanks. Sintering is a key process in powder metallurgy. The molded compacts are sintered to obtain the required final physical and mechanical properties. Sintering is divided into unit system sintering and multi-system sintering. For the solid-phase sintering of the unit system and the multi-system, the sintering temperature is lower than the melting point of the metal and alloy used, and for the liquid-phase sintering of the multi-system, the sintering temperature is generally lower than the melting point of the refractory component, and higher than the melting point of the fusible component. In addition to ordinary sintering, there are special sintering processes such as loose sintering, melting and dipping, and hot pressing.

4. Post-treatment of powder metallurgy products. The treatment after sintering can be adopted in various ways according to different product requirements. Such as finishing, oil immersion, machining, heat treatment and electroplating.

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