(1) most of the refractory metals and their compounds, pseudo alloys and porous materials can only be produced by powder metallurgy method.
(2) due to the powder metallurgical method can be pressed into the final size of the compact, and do not need or need little subsequent mechanical processing, it can greatly save metal, reduce the cost of products. Products manufactured by
powder metal, metal loss only 1-5%, and general casting method used in the production, the loss of metal may will reach 80%.
(3) due to the technology of powder metallurgy in the production process of the material does not melt materials, not mixed with impurities caused by crucible and deoxidizing agent and sintering general in vacuum and in a reducing atmosphere, not afraid of oxidation nor to any material pollution, so it is possible for preparation of high purity materials.
(4) powder metallurgy method can guarantee the accuracy and uniformity of the composition ratio of the material.
(5) powder metallurgy is suitable for the production of the same shape and the number of products, especially gear and other high processing costs of products, powder metallurgy process can greatly reduce production costs.
In summary, powder metallurgy materials with low loss, high product purity, stable performance, easy to scale production etc.. Powder metallurgy can make traditional casting method and mechanical processing method can prepare materials and difficult to process parts.
