Powder metallurgy method can ensure the correctness of material composition ratio

Powder metallurgy method can ensure the correctness of material composition ratio

Powder metallurgy is not only a material manufacturing technology, but also a material processing technology. For material manufacturing, powder metallurgy can produce materials with special properties that cannot be produced by ordinary melting and casting methods. Then let's look at the powder metallurgy method to ensure the correctness of material composition.

Production process of powder metallurgy

1: Milling - mixing - pressing/forming press - sintering/sintering furnace - finishing - post-treatment

2: Milling - mixing - pressing/forming press - sintering/sintering furnace - finishing - re-sintering - finishing - post-treatment

Among them, method 1 is the commonly used method. Method 2 is for products with high requirements for density, size and other conditions of parts.

Advantages of powder metallurgy process

Most refractory metals and their compounds, pseudoalloys and porous materials can only be manufactured by powder metallurgy.

Because the powder metallurgy method can be pressed into the final size of the compacts without or little need for subsequent mechanical processing, it can greatly save metal and reduce product costs. When using powder metallurgy method to produce products, the metal loss is only 1-5%, while when using general melting and casting method to produce products, the metal loss may reach 80%.

Since the powder metallurgy process does not melt the material in the material production process, it is not afraid of mixing impurities brought by crucibles and deoxidizers, etc., while sintering is generally carried out in vacuum and reducing atmosphere, and it is not afraid of oxidation and will not cause any pollution to the material, so it is possible to produce high-purity materials.

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