2020

Release time:

2023-07-25 17:58

In January 2020, Zhichang successfully obtained the 16949 quality system certification and was recognized as a high-tech enterprise in December of the same year.

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What are the reasons for the blackening of the coil?

Copper wire annealing refers to a metal heat treatment in which copper wire is slowly heated to a certain high temperature and maintained for a period of time, then cooled at a corresponding rate. Copper wire annealing can effectively reduce hardness, improve machinability, eliminate residual stress, stabilize size, and reduce deformation and crack tendency; Refine grain size, adjust structure, and eliminate structural defects. However, the manufacturer of Beijing Kexun Hongsheng High Temperature Line believes that once the temperature exceeds 50 ℃ during the production process, the required extraction time is insufficient, the SO2 content is high, and the protective gas is impure, which will cause insufficient annealing. After a period of time, the copper wire will be prone to blackening.

2022

Method for inspection of three-layer insulation wires

1. Winding test of three-layer insulation wire: Take a sample with a length of at least about 305mm and wind it 10 times on a circular rod equivalent to the outer diameter of the sample at a speed of 1-3 turns/second. The tension borne by the wire during winding is just enough to make the wire in close contact with the circular rod, and it should be noted that there should be no elongation of the sample. After winding, the sample should be visually inspected and there should be no deep or conductor cracks in the insulation layer.

2022

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Business Department Phone: 13356435375

Technical Department Phone: 17376939278

Quality phone number: 17796126319

R&D WeChat: 13682215090

Customer complaint hotline: 19928921311

Address: 6th Floor, Building 1, Wanyang (Gulou) Creative City, Heshan City, Jiangmen, Guangdong Province

chensheng@zczcxy.cn

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Zhichang (Guangdong) New Materials Co., Ltd

The company is a professional production enterprise that integrates research and development, production, and sales of new energy wires, film wrapped wires, self-adhesive wires, and three-layer insulation wires.