By chemical or electrochemical methods, the state of metal surface changes, the dissolution rate drops sharply, and the corrosion resistance is improved. This process is called passivation. Passivation is often accompanied by a sudden increase in anode potential, which makes the anodic reaction difficult to carry out and makes the metal corrosion slow down or stop. Becau...
The process is called anodizing because the part to be treated forms the anode electrode of an electrolytic cell. Anodizing increases resistance to corrosion and wear, and provides better adhesion for paint primers and glues than bare metal does. Anodic films can also be used for several cosmetic effects, either with thick porous coatings that can absorb dyes or with th...
The silver contact refers to the point of intersection where the electronic appliances are disconnected and contacted when they are opened and closed. Since the metal conductor terminal is prone to instantaneous heat and sparks at the moment of contact, the contact point is prone to oxidation and electrolysis in the multi-frequency process of use, so the contact point i...
1. Pure copper: commonly known as ‘red copper’ in China and ‘red copper’ in Japan and Taiwan a.Common grades: T1, T2, T3, TU1, TU2 b. Features: For conductivity c. Common uses: electrical switches, motor coils, electronic parts, air-conditioning pipelines, soft welding gun heads 2. Brass: containing zinc a. Common grades: H59, H62, H65, H68, HPb59-1 (free-cutting br...
The main of automotive molds is the cover mold. This type of this mold is mainly a cold stamping. The "automotive mold" in a broad sense is a general term for the molds that make all the parts on a car. For example, stamping dies, injection dies, forging dies, casting wax dies, glass dies, and so on. Stamping of automotive bodies are broadly divided into cover stamping,...
