Fine Grinding Method and Cooling Forming of Zirconia Ceramics

Fine Grinding Method and Cooling Forming of Zirconia Ceramics

Fine Grinding Method for Zirconia Ceramics

Zirconia ceramics have high high-temperature structural strength and negative resistance temperature coefficient, so it is necessary to polish the material of the product under certain circumstances. The specific methods are as follows:

(1) Mechanical polishing of zirconia ceramics

When constructing zirconia ceramics on a large area, in order to improve work efficiency, mechanical polishing methods such as electric polishing machines (disc type, vibration type) can be used

(2) Dry polishing of zirconia ceramics:

Use sandpaper for polishing. Suitable for polishing hard and brittle paint, the disadvantage of polishing zirconia ceramic materials is that a lot of dust will be generated during the operation, which affects environmental hygiene.

(3) Wet polishing of zirconia ceramics:

Polish with sandpaper dipped in water or soapy water. Water grinding can reduce grinding marks, improve the smoothness of coatings, and save sandpaper and labor. However, attention should be paid to spraying the lower layer of paint after water grinding. Firstly, it is necessary to wait for the water grinding layer to completely dry before applying the lower layer of paint, otherwise the paint layer can easily turn white. Additionally, substrates with strong water absorption are not suitable for water grinding.

Cooling Forming of Zirconia Ceramic Structural Parts

(1) Vacuum Cooling Forming of Zirconia Ceramics

The method of using vacuum outside the pipe to adsorb the outer surface of the pipe onto the inner wall of the set sleeve and cool it to determine the outer diameter size. This method is particularly suitable for the extrusion method of ultra-high molecular weight polyethylene ceramic needle gauge structural components.

(2) Internal Pressure Cooling Forming of Zirconia Ceramics

It uses compressed air under pressure inside zirconia ceramic structural components, and a cooling and shaping sleeve is added to the pipe to make the outer surface of the pipe adhere

(3) Zirconia Ceramic Sizing Port Sizing (Ejection Method) Cooling Forming

This method does not require a traction device and directly ejects zirconia ceramic structural components into shape. The characteristic of the ejection method head structure is that the straight part of the core mold is about 10-50mm longer than the mouth mold. The screw thrust pushes the pipe out of the head and directly pushes it into the cooling water tank. The outer surface of the pipe cools and hardens, and the inner surface is sleeved on the core rod and cannot shrink inward to form a shape.

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