What are porous materials of powder metallurgy?

What are porous materials of powder metallurgy?

It is well known that the powder metallurgy process has been widely used in many fields, such as automobiles, communications, household appliances, digital electronics, hardware tools, etc. However, the powder metallurgy process seems very simple. It is directly formed by a pile of metal powders, and then can be put into use after sintering and post-processing. In fact, it is very complex, especially the selection of materials. If the selection is not correct, it is likely that the processed products will not meet your requirements completely. At present, porous materials are commonly used in powder metallurgy. What are porous materials in powder metallurgy? Here is a brief introduction of the Zhongwei Precision Editor:

powder metallurgy

Powder metallurgy porous material is a kind of material with porous internal structure manufactured by powder metallurgy molding technology. After powder metallurgy molding and sintering, it is often called sintered porous material. The internal pores of the material are crisscross and interconnected, generally with 30%~60% volume porosity and 1~100 μ m pore diameter. Good permeability, heat conduction and conductivity, high and low temperature resistance, thermal shock resistance and medium corrosion resistance.

Characteristics of powder metallurgy porous materials:

1. It is renewable and has a long service life.

2. Good conductivity and thermal conductivity.

3. High and low temperature resistance.

4. It can be welded and processed.

5. The pore diameter and porosity can be freely controlled.

6. With its porous characteristics, it can filter, separate and purify liquid and gas.

At present, this powder metallurgy porous material can be mainly used in fire-fighting devices, aircraft wings, tail wing antifreeze devices, high temperature resistant nozzles, flame explosion-proof devices and other tools. Powder metallurgy is one of the important ways to prepare metal porous materials. It mainly uses metal powder, metal fiber or metal wire mesh as raw materials to obtain pore structure with stable performance through the sintering process, so as to achieve the functions of porous materials such as fluid penetration, sound absorption and noise reduction, mass transfer and heat transfer, and energy absorption. It plays a very important role in the national economy.