The electrophoretic coating process emerged with the development of my country's machinery industry, meeting people's high-quality requirements for vehicles. The electrophoretic coating process can improve the safety, environmental protection and diversity of vehicle fasteners. When processing vehicle fasteners, it is necessary to master the application skills of electrophoretic coating processing, so as to ensure that the fasteners produced meet customer needs and can play a greater role in production.

Regarding the application skills of electrophoretic coating processing, first of all, according to the types and performance requirements of automotive fasteners, high-strength 8.8 and 10.9 bolts for automobile chassis, engines, and transmissions should be tested. The main solutions are black cathode electrophoretic coating, hardware electrophoretic coating for fastener coating; there is also black cathode electrophoretic coating, the formula has been adjusted, suitable for fastener coating; then there is black cathode electrophoretic coating, and electronic product electrophoretic coating for ordinary parts coating.

After that, when it comes to the application skills of electrophoretic coating, the key is to pay attention to testing the main properties of the coating (plating) layer of the fastener, mainly including corrosion resistance (salt spray test) performance, moisture and heat resistance performance and assembly performance.

It should be noted here that at present, domestic high-strength fasteners for automobiles are basically imported, and an important bottleneck in the localization of fasteners is the control of friction coefficient. On the premise of ensuring that the assembly performance is met, the longer the salt spray test and moisture and heat resistance time, the better. In addition, the paint film does not fall off when assembling with a pneumatic wrench. These are the key technologies for fasteners to use electrophoretic coating processing technology.