With the development of society, people's requirements are getting higher and higher. Precision stamping terminal manufacturers need to consider many factors when producing stamping parts. In many cases, it is necessary to know the chemical properties of the raw materials used in the production of metal stamping parts. Some metal stamping factories without relevant experience may feel at a loss when they first contact. Next, precision stamping terminal manufacturers analyze some chemical properties of the raw materials of metal stamping parts.
The chemical properties of metal materials refer to the properties that can only be realized when chemical reactions occur, including oxidation resistance, corrosion resistance and chemical stability.
1. Chemical properties
The chemical properties of metal materials refer to the ability of metal materials to resist chemical corrosion by various corrosive media at room temperature or high temperature. It mainly includes corrosion resistance and oxidation resistance.
2. Chemical corrosion
This is the result of the direct chemical interaction between the metal and the surrounding medium. It includes gas corrosion and metal corrosion in non-electrolytic chemical corrosion. Its characteristics are: the corrosion process does not generate current, and the corrosion products are deposited on the metal surface.
3. Electrochemical corrosion corrosion
Corrosion caused by the action of metal and electrolyte solution (such as acid, alkali, salt, etc.) is called electrochemical corrosion. It is characterized by the generation of electric current during the corrosion process. Corrosion products (rust) do not cover the surface of the anode metal, but keep a certain distance from the anode metal.
4. General corrosion
This corrosion is evenly distributed on the inner and outer surfaces of the metal, so that the cross-section is continuously reduced, and then the stressed part is destroyed.
5. Intergranular corrosion
This corrosion occurs inside the metal along the edges of the grains, usually without causing any change in the shape of the metal, and often results in sudden damage to equipment or machinery.
6. Antioxidant properties
The ability of metal materials to resist oxidation at room temperature or high temperature. The oxidation process of metals is actually a form of chemical corrosion. It can directly use the size of the weight loss of the metal surface after corrosion within a certain period of time, that is, the rate of metal weight loss.
