Preparation and use of copper based powder for powder metallurgy raw materials

Copper based powder is extremely frequently used in the powder metallurgy process, and it is very common to use it as one of the raw materials for powder metallurgy. What are the characteristics of this powder and what should be paid attention to when using it to achieve better results?

In the manufacturing process of copper based powder, one of the powder metallurgy raw materials, due to the spherical powder not being subjected to external forces, the loose copper powder is formed by high-temperature sintering. During this process, the sintering problem is also strictly controlled within a certain range, so the spherical powder remains spherical and pores are formed between particles. The porosity and scale between pores can be selected.

Due to the manufacturing process, copper based powder has the characteristics of high filtration accuracy, stable pores, and low pressure loss. And there will be no phenomenon of pore size changing with pressure. It is precisely because of the effective removal of suspended solids and particles that such high filtration accuracy and good purification effect can be achieved.

Copper based powder has a high porosity, uniform and smooth pores, so its initial resistance is small and easy to blow back; Moreover, it has strong regeneration ability and long service life, making it particularly suitable for places with high uniformity requirements such as fluid distribution and uniform disposal. In addition, copper based powders have high mechanical strength, good rigidity, good plasticity, oxidation resistance, corrosion resistance, etc., making them more widely used.

In copper based powders, copper powder accounts for the vast majority of the composition, and the matrix material is copper powder. But it added some alloy elements, such as iron, carbon, and so on. So, commonly used copper based powder alloys in powder metallurgy include Sn10 powder, 663 bronze powder, etc., or materials obtained by adding a little graphite powder and lubricant according to their own needs.

In summary, copper based powders not only have excellent performance, but also are easy to prepare and use, providing an ideal raw material for the development of powder metallurgy processes.