What are the factors affecting the quality of copper row

The surface quality of red copper row can be divided into three main aspects: smooth surface, smooth surface and surface defects. It is closely related to copper properties, production technology, production management and production environment.

1. Factors influencing the smooth surface of red copper row

Compared with other metals, copper has good corrosion resistance, but it can still undergo chemical changes in high temperature, humidity, acid fog and other environments, resulting in surface discoloration. These adverse environmental conditions exist in different degrees during the production, storage and transportation of copper row, which will affect the surface quality to a certain extent.

2, the temperature

In the atmosphere, copper oxidizes slowly at room temperature. When the temperature rises to 100 degrees Celsius, black copper oxide begins to form. The oxidation rate is proportional to the logarithm of time. When the temperature rises to 185 degrees Celsius, the oxidation rate increases significantly, and when the temperature rises above 400 degrees Celsius, the oxidation rate increases more rapidly, with a parabolic increase.

3, humidity

In humid environment, the presence of water vapor will lead to corrosion or oxidation of copper exhaust surface. When the temperature is constant, the growth rate of oxide film increases with the increase of humidity.

4, lubricant factors of tensile processing process

The function of process lubricant is to reduce friction, to ensure and improve the surface quality of processed materials, to prevent metal bonding on the mold, and to cool down. The residual lubricant, residual acid and residual water on the surface of copper row in the process of copper row drawing will directly or indirectly affect the surface quality of copper row. Better lubricant, its lubricity is good, the residual capacity on the surface of copper row is the cause of discoloration or corrosion spots on the surface of copper row.