PZT4/5/8 Piezoelectric Ceramic Ring For Ultrasonic Welding Machine

PZT4/5/8 Piezoelectric Ceramic Ring for ultrasonic welding machine 

Description：

Piezoelectricity is the creation of electric potential in certain materials when they are under mechanical stress, such as bending, stretching, or compressing. Physicists refer to this phenomenon as the piezoelectric effect. The materials that exhibit these characteristics are called piezoelectric materials.

Specification:

Process flow:

1. Ingredients: carry out pre-processing of materials, remove impurities and moisture, and then weigh various raw materials according to the proportion of the formula. Note that a small amount of additives should be placed in the middle of the aniseed.

2. Mixing and grinding: The purpose is to mix and grind various raw materials to prepare the conditions for complete solid-phase reaction for pre-sintering. Dry grinding or wet grinding is generally used. Dry grinding can be used for small batches, and stirring ball milling or jet pulverization can be used for large batches, which is more efficient.

3. Pre-burning: The purpose is to conduct solid-phase reaction of each raw material at high temperature to synthesize piezoelectric ceramics. This process is very important. It will directly affect the sintering conditions and the properties of the final product.

4. Secondary fine grinding: The purpose is to finely vibrate and mix the pre-fired piezoelectric ceramic powder, so as to lay a solid foundation for the uniform performance of the ceramic.

5. Granulation: The purpose is to make the powder form high-density granules with good fluidity.

6. Forming: The purpose is to press the pelletized material into the required prefabricated size blank.

7. Plastic removal: The purpose is to remove the binder added during granulation from the blank.

8. Sintering into porcelain: The blank is sealed and sintered into porcelain at high temperature. This part is very important.

9. Shape processing: Grind the fired product to the required finished product size.

10. Electrode: Set conductive electrodes on the required ceramic surface. The general methods are infiltration of silver layer, chemical deposition and vacuum coating.

11. High-voltage polarization: orienting and arranging the internal electrical domains of the ceramics, so that the ceramics have piezoelectric properties.

12. Aging test: After the ceramic performance is stable, check various indicators to see if it meets the expected performance requirements

Application:

• Sound sensors

• Microphones

• Microbalances

• Ultrasonic transducers

• Equipment for non-destructive inspection and testing in the automotive and aeronautical industries

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