Advantages and disadvantages of powder metallurgy stainless steel

Advantages and disadvantages of powder metallurgy stainless steel

What are the advantages and disadvantages of powder metallurgy stainless steel? Today, Zhongwei Precision Powder Metallurgy Gear Processing Factory in Qinhuangdao will talk to you:

It is understood that if the smelting process is used to produce stainless steel products, due to the difficulties in cutting, there will be a series of arrangements for the manufactured parts, such as poor dimensional accuracy, insufficient surface roughness, etc. Powder metallurgy plays an important role in solving similar problems.

Compared with stainless steel produced by traditional smelting process, powder metallurgy stainless steel has many advantages, such as parts close to net forming, high dimensional accuracy, high material utilization rate, uniform organizational structure, etc., and has been widely used in machinery, chemical industry, ships, automobiles, instruments and meters and other industries. However, it does not mean that the powder metallurgy stainless steel is perfect. Because of its internal porosity, the mechanical properties, wear resistance and corrosion resistance of the powder metallurgy stainless steel are greatly reduced, which severely limits the application of this h product.

Powder metallurgy gear

The reason why a large number of voids remain in the interior of powder metallurgy stainless steel has a lot to do with the solid phase sintering method, so some users began to replace it with ultra solid phase line liquid phase sintering, so that the stainless steel prealloyed powder formed a liquid phase during sintering, and the liquid phase filled the pores through the flow to improve the density and performance of the sintered body.

Different from ordinary liquid-phase sintering, super solid-liquid sintering is the sintering of prealloyed powder, and it is always a single phase in the sintering process, and the sintering temperature will always be between solid-liquid lines. Moreover, the particles are rearranged under the action of liquid capillary force, and the sinter is dense through liquid flow mass transfer.

However, some studies have proved that almost all properties of powder metallurgy stainless steel increase with the increase of density. Therefore, as long as the density of powder metallurgy stainless steel is increased and its porosity is reduced, it can play a key role in improving the properties of powder metallurgy stainless steel. In addition, one of the main ways to improve the properties of powder metallurgy stainless steel can also be achieved by adding appropriate strengthening phases, especially its hardness and wear resistance.

This is about the advantages and disadvantages of powder metallurgy stainless steel. Do you have a better understanding of powder metallurgy stainless steel? If you want to know more about the demand related to powder metallurgy, please continue to pay attention to the dynamic update of the official website of zhongwei Precision. Or if there is processing, you can call directly for consultation!