The Isostatic Molds/bags for Silicon Nitride Ceramic

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The Isostatic Molds/bags for Silicon Nitride Ceramic

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Application: The Isostatic Molds/bags for Silicon Nitride Ceramic

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The Isostatic Molds/bags for Silicon Nitride Ceramic

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The Isostatic Molds/bags for Silicon Nitride Ceramic


Silicon nitride isostatic pressing mold, silicon nitride powder isostatic pressing rubber sleeve, silicon nitride ceramic wet bag method isostatic mold sleeve, silicon nitride ceramic isostatic pressing molding: silicon nitride ceramic isostatic pressing Molding is to place the sample to be pressed in a high-pressure vessel, and use the incompressible properties of the liquid medium and the property of uniformly transmitting pressure to uniformly pressurize the sample from all directions. When the liquid medium is injected into the pressure vessel through the pressure pump, according to the fluid Mechanical principle, the pressure is constant and evenly transmitted to all directions. At this time, the pressure on the powder in the high-pressure container is uniform and consistent in all directions. The method of molding barren powder into a dense body through the above method is called isostatic pressing.

The process of isostatic pressing of silicon nitride ceramics:

When the initial molding pressure is small, the powder particles migrate and re-accumulate.

In the middle stage, the pressure increases and the powder localizes to flow and fragment.

When the pressure is maximum in the later stage, the powder volume is compressed and the pores are discharged, reaching the densification stage.

Characteristics of isostatic pressing of silicon nitride ceramics: The friction between the powder and the mold is relatively large, and the pressure will cause pressure loss along the pressing direction, making the density of each part of the green body uneven. During isostatic pressing, the pressure transmitted by the liquid medium is equal in all directions. The deformation generated by the elastic mold when it is subjected to the pressure of the liquid medium is transmitted to the powder in the mold. The friction between the powder and the mold wall is small, the green body is evenly stressed, and the density distribution is uniform, and the product performance is greatly improved.

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