What are the factors affecting the quality of copper row

Copper busbar is an indispensable conductive material in the manufacture of motor windings, high and low voltage electrical appliances, switch contacts, and wires for power supply and distribution installation. Copper busbar is a main variety of copper processing materials. Copper bus has high mechanical properties, good electrical conductivity, thermal conductivity, excellent corrosion resistance, electroplating, brazing, beautiful and beautiful metal luster and good forming performance, so all kinds of transmission and transformation, electrical equipment made with it has been widely used in the field of electric power. In recent years, with the continuous and rapid development of national economy, the output and consumption of copper busbar in China are greatly improved, and the quality requirements of copper busbar are also constantly improving.

Surface quality of copper busbar can be divided into three main aspects: smooth surface, smooth surface and surface defect. It is closely related to copper property, production technology, production management and production environment.

1. Factors influencing the smooth surface of copper bus

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. In the process of copper busbar production, storage and transportation, these adverse environmental conditions exist in different degrees, 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 surface of copper bus is corroded or oxidized due to the presence of water vapor. 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 lubricant, residual acid and residual water on the surface of copper bus can directly or indirectly affect the surface quality of copper bus. Better lubricant, its lubricity is good, the residual capacity on the surface of copper bus surface is the cause of discoloration or corrosion spot.