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Dry pressing of ZTA 25% ZrO2 zirconia toughened alumina ceramic lining plate
10-22-2023

ZTA 25% ZrO2 zirconia toughened alumina ceramic lining plate is a widely used ceramic lining plate in industry in the past 5 years. Today, let's introduce our dry molding method to you.

Dry pressing: ZTA 25% ZrO2 zirconia toughened alumina ceramic lining plate is limited to objects with simple appearance, inner wall thickness greater than 1mm, and aspect ratio not exceeding 4:1. The forming method is uniaxial or bidirectional. There are two types of presses, hydraulic and mechanical, which can be semi-automatic or fully automatic. The maximum pressure of the press is 200Mpa. The production can reach 15-50 pieces per minute. Due to the uniform stroke pressure of the hydraulic press, the height of the stamped parts also varies when the powder is filled differently. However, the applied pressure of the mechanical press varies with the amount of powder filling, which can easily lead to differences in size shrinkage after sintering and affect product quality. Therefore, the uniform distribution of powder particles during dry pressing is crucial for mold filling. The accuracy of filling amount has a significant impact on the dimensional accuracy control of alumina ceramic parts. When the powder particles are larger than 60 microns and between 60 and 200 mesh, the maximum free flow effect can be achieved, and the best pressure forming effect can be achieved.


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