Powder Metallurgy Commonly Used Sintering Methods

Powder metallurgical sintering methods usually have the following categories:
1, liquid phase sintering
If there are more than two components in the powder pressure billet, sintering may take place above the melting point of a certain component, so a small amount of liquid phase appears in the powder pressure billet during sintering.
2, pressurized sintering
During sintering, pressure is applied to the powder to promote its densification process. Pressure sintering is sometimes synonymous with hot pressure, which is the process of combining the formation and sintering of the powder to directly obtain the product.
3, activation sintering
In the process of sintering, some physical or chemical measures are used to greatly reduce the sintering temperature and shorten the sintering time, but the performance of the sintering body is improved and improved.
4, Spark sintering
When the powder body is pressed into the forming direct current and pulse electricity, the powder particles generate arc and sintering; Pressure is gradually applied to the workpiece during sintering, and the forming and sintering processes are combined.
5, powder solid phase sintering
A powder sintering method in which no melting occurs during the sintering process of the assembled elements. The solid phase sintering of powder can be divided into two types according to the number of its components.
The above is a commonly used sintering method for powder metallurgy to introduce this. Powder metallurgical sintering is a high-temperature treatment process that is to make pressing billets or loose powder bodies further combined to increase strength and other properties.