The hardware tells you why the shielding cover appears yellow?

The hardware tells you why the shielding cover appears yellow? After a period of use of the shielding cover nickel silver, the phenomenon of yellowing appeared. What are the causes of yellowing? 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 does not contain 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 not change. Why does the shielding cover appear yellow? Need to know more, welcome to consult: