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What are the production processes of vacuum hot pressing sintering?

Views: 0     Author: Site Editor     Publish Time: 2023-01-06      Origin: Site


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Hot pressing sintering furnace is a sintering method in which dry powder is filled into the model and heated from

 the uniaxial side so that forming and sintering are completed at the same time. 

What are the kinds of production processes of hot pressing sintering furnace?

1. Vacuum sintering furnace and atmosphere hot pressing sintering furnace

For sintering products that are difficult to air (e.g., light transmission or non-oxide),

 in order to prevent oxidation, the atmosphere in the sintering method of the study. 

That is, a certain influence gas is passed into the design furnace to form the required atmosphere, 

and the sintering is carried out under this environmental atmosphere.

2, hot isostatic pressing sintering

Hot isostatic pressure differential sintering refers to the sintering development process of 

applying isotropic isostatic pressure to the loose material powder in the envelope while heating it.

 Hot isostatic pressing intensifies the pressing and sintering process. 

Sintering temperature is reduced to eliminate voids to avoid grain growth, density and strength. 

Compared with hot pressing, hot isostatic pressing at different temperatures can increase the density of products.

3, reaction hot pressing sintering

It is for the high temperatures at which chemical reactions can occur in the powder. 

A hot pressing sintering technology that is fully utilized according to the situation.

 In the sintering mass transfer process, in addition to the reduction of surface free energy and mechanical force, 

a chemical reaction energy is added as the driving force or activation energy.

 In order to reduce the sintering temperature, that is, it reduces the difficulty of sintering to obtain dense ceramics. 

For example: vacuum hot press furnace

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