21 years of experience in R&D, customization, production and sales of varistors, with a wide range of products, free sample delivery, on-demand customization, etc., and a 5-year warranty service. Today, the editor of the chip varistor manufacturer will introduce to you the 10 major production processes of varistors.
1. Raw material preparation: high-purity zinc oxide and other additives are selected for mixing to make ceramic materials for varistors.
2. Sintering: The mixed ceramic material is sintered into blocks at high temperature.

3. Grinding: Grind the sintered block to make it into a shape and size that meets the requirements.

4. Metallization: The surface of the ground ceramic material is metallized for welding and lead-out terminals.
5. Spraying: Spray a layer on the surface after metallization to increase moisture-proof and anti-pollution functions.
6. Printing: Print resistance value, tolerance, production batch and other information on the surface of the ceramic material.
7. Cutting: Cut the ceramic material into small pieces.
8. Welding: Weld the cut varistor to a printed circuit board or a finished device.
9. Testing: Conduct electrical performance and appearance inspection on the produced varistors.
10. Packaging: Pack the tested varistors for transportation and sales.
The above is an introduction to the varistor production process. If you have production and processing needs for 20D varistors, 32S varistors, 7D varistors, etc., you can contact Weidi Industrial.