Wire and cable in the copper wire yellowing causes

In a sense, the wire and cable manufacturing industry is a material finishing and assembly industry. First, the amount of material is huge, wire and cable products in the material costs to account for 80-90% of the total cost of manufacturing; Second, the categories and varieties of materials used is very much, the performance requirements are particularly high, such as copper conductor, the purity of the copper required to be more than 99.95%, and some products to be used in the oxygen-free high purity copper; Third, the selection of materials will be on the manufacturing process, the performance of the product as well as the service life of the decisive impact. Which is particularly important for the selection of copper wire, if a little careless may cause safety accidents. 1. tin furnace temperature is too high, fluidity, resulting in excessive plating pinholes, copper and tin penetration fast 2. tin layer is too thin, copper and tin penetration fast 3. flux halogen residue is too much, the copper surface pickling is not thorough enough 4. packaging time is too fast, the heat is not dispersed, the tin furnace is too much impurity 5. the quality of copper material is not up to standard, there are too many impurities 6. temperature High and low on the copper atomic activity has an impact on the hot day than the cold day yellowing fast.

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