Materials made by powder metallurgy are called powder metallurgy materials (metallurgical material powders). The so-called powder metallurgy is the production of powder and consolidated (such as compaction and sintering) powder to prepare materials or part of the technical process. At present, this is an effective means to improve the performance of household appliances and develop new materials.

Special functional materials prepared by powder metallurgy can be divided into 5 categories:

1) Porosity can be controlled (such as filters, oil bearings, etc.).

2) Can produce fake alloy composite materials (such as contacts, metals, diamonds, etc.).

3) Can produce refractory metals (such as tungsten, molybdenum wire, etc.).

4) Can produce homogeneous material ingredients (such as dispersed strengthened copper, powdered high-speed steel, etc.).

5) Can produce special functional materials (such as light, sound, materials, electrical, etc.).

Powder metallurgy is a material energy saving and environmentally friendly technology. The powder metallurgy process produces almost no soot or chemical pollution. There are few or no cut parts in the near-net shape, and there is less waste loss. In addition, the utilization rate of single-weight lightweight materials is very high . Use powder metallurgy materials to count the same products. The cost is reduced by 75% and the efficiency is increased by 1.7 times. Therefore, from the perspective of the performance of household electrical appliances, to increase or decrease the cost of home appliances using wood, the development and application of powder metallurgy materials in the home appliance industry is imperative.