As an indispensable part of electronic products, the charging needle is well designed, which can not only save space, but also greatly reduce the difficulty of assembly. In recent years, electronic products have been developed to be light, thin and small. In order to save space, electronic manufacturers have made the charging pin adapter expan...

1. Definition electroplating: it is a kind of metal electrodeposition process, which refers to the process in which simple metal ions or complex ions are discharged on the surface of solid (conductor or semiconductor) by electrochemical method and restored to metal atoms attached to the surface of electrode, so as to obtain a meta...

The basic performance of connectors can be divided *** three categories: mechanical performance, electrical performance and environmental performance. Another important mechanical property is the mechanical life of the connector. In practice, mechanical life is an index of durability, which is called mechanical operation in the nat...

First, the main causes of depression:

1. The large gate is designed to solidify first, which can not cover the area and shrink; Materials shall be properly ***ed to reduce meat thickness, gate size shall be increased to facilitate plastic filling, and gate shall be designed in areas with slightly larger meat thickness.

2. Improper ...