Solution 1: Dry pressure preforming + cold isostatic compaction treatment

Applicable powder: good dispersion of binder, good powder forming performance, high strength of green body

Forming equipment: YK1500-3000 two-way special ceramic hydraulic press, dry pressing mold, plastic film bag, vacuum heat sealing machine, cold isostatic press.

Description of the forming process:

The first process: pre-forming, the powder is put into a dry pressing mold and preformed on a YK1500-3000 two-way special ceramic hydraulic machine to obtain a dry compact body.

The second process: vacuum packaging, the preformed blank is placed in a PVC film bag, and vacuum-packed on a small vacuum heat sealing package machine.

The third process: cold isostatic pressing, the vacuum-sealed preform body is hung in the hanging basket of the cold isostatic press, and the sealing cylinder is pressurized to 180 MPa or more, and the cylinder is taken out after being pressed and relieved. The film bag with the blank body is blown and cut into the film bag to take out the pressed ceramic mobile phone back plate blank.

Solution 2: dry pressure preforming + warm isostatic compaction treatment

Applicable powder: poor dispersion of binder, good powder forming performance, high strength of green body

Forming equipment: YK1500-3000 two-way special ceramic hydraulic press, dry pressing die, plastic film bag, vacuum heat sealing machine, warm isostatic press.

Description of the forming process:

The first process: pre-forming, the powder is put into a dry pressing mold and preformed on a YK1500-3000 two-way special ceramic hydraulic machine to obtain a dry compact body.

The second process: vacuum packaging, the preformed blank is placed in a PVC film bag, and vacuum-packed on a small vacuum heat sealing package machine.

The third process: warm isostatic pressing, the vacuum-packed preform body is hung in the hanging basket of the warm isostatic press, and the sealed cylinder is heated to about 80 ° C for a period of time, and then pressurized to 180 MPa or more. After holding pressure and pressure relief, the cylinder is taken out to cool the basket, and the film bag with the blank body is taken out, and the film bag is blown and cut out to take out the pressed ceramic mobile phone back sheet body.

Solution 3: Dry bag isostatic forming

The powder is placed in a static bag such as a dry bag and formed into a static dry bag of 180 MPa or more.