Copper clad steel is copper wrapped steel wire, that is, steel wire outside the copper layer of composite wire, it utilizes the skin effect of low-voltage high-frequency signal, in the high-frequency area along the surface, so as long as the copper layer thickness reached a certain range, the signal of a frequency segment can be ensured to pass.Copper plays a role in the conduction of weak electrical signals, and steel wire plays a supporting role.
According to the data, Xiangtan cable Factory is the only production of copper clad steel wire factory in China at that time, production capacity of 500 tons. Harbin Cable Factory in the early 1992, the production of copper-clad steel wire was preliminarily successful by using the hot-dip coating method to produce the oxygen-free copper rods. The original electronics industry has three of radio materials factory using electroplating process to produce tinned copper clad steel wire. Shantou Wire Factory "75" during the introduction of the West German plating process and main equipment, tinned copper clad steel wire annual production capacity of 300 tons; Zhongyuan Radio material Factory "75" during the introduction of the United States electroplating production technology and equipment, tinned copper clad steel wire annual production capacity of 100 tons, MA On Shan Radio material factory imported key equipment, the use of electroplating production, tinned copper clad steel wire annual production capacity of 150 tons. From the information on the patent network, Jiangyin Metal Products Research Institute in 1994 on the development of copper clad steel production process, this is related to the project of the fall, Zhangjiagang friendship and Baoshan Group was founded in 1995, while Zhejiang Hundred Sichuan is established in 1997, Shao Yang was established in 1998, Zhangjiagang Jinxin and the northern Zhejiang Communication was founded in 1999, these are the leading enterprises.