Why does the white copper shielding cover turn yellow? How to deal with it again?

After using the nickel silver shielding cover for a period of time, the phenomenon of yellowing appeared. What is the cause of yellowing? Xiaoshuo will take you to find out: The reason is that the shielding cover turns yellow after high temperature heating. The white copper workpiece needs to be heated at a high temperature during the processing (the white copper without high temperature resistant materials), and it will turn yellow when heated at high temperature. The other kind of nickel silver, which contains high temperature resistant materials, will not turn yellow after being heated at high temperature due to the particularity of the material composition. But the price is relatively expensive. Surface oxidation causes yellowing of the shield. The nickel silver has inherited part of the chemical properties of zinc. If it is exposed to the air for a long time, the surface will be oxidized by the air and the color will become yellow. Although yellowing will affect the beauty of the appearance, it has no effect on the performance of the product itself. Some people question the material and craftsmanship of the product because of the discoloration. In fact, the yellowing phenomenon is a problem that all ordinary nickel silver products have. It has nothing to do with materials and processing techniques, and this phenomenon cannot be changed by manpower. Don't worry, the performance of the nickel silver shielding cover will change. Hardware, with 15 years of stamping experience in Dongguan shield manufacturer, your demand is the pursuit, consultation phone: