Dongguan Da Ling Shan Chang Sheng processing hardware store copper effect: 1. increase the hardness and strength of the alloy; 2 to improve wear resistance of the alloy; 3 to reduce intergranular corrosion. . Hardware copper sleeve unfavorable: a copper content of more than 1.25%, the make casting dimensions and mechanical strength due to aging and changes; 2 lower alloy extensibility. Role: ① copper content of the alloy increases the impact strength of Dongguan Da Ling Shan Chang Sheng processing hardware store impurity elements: lead, cadmium, tin and zinc alloys become sensitive to intergranular corrosion of the metal shell HDMI manufacturers, in a warm, wet environment accelerated intergranular corrosion itself, reduce the mechanical properties of the metal shell HDMI, and cause the casting dimensional changes. When zinc alloy impurity elements such as lead, cadmium content is too high, just die-cast zinc alloy jewelry piece molding, surface quality as usual, but is stored at room temperature for a period of time (eight weeks to a few months), the surface bubbling. Zinc alloy jewelry | Zinc | Chang Sheng Hardware provided by Dongguan Da Ling Shan Chang Sheng processing hardware store. Dongguan Da Ling Shan Chang Sheng processing hardware store (shop1379091614724.1688.com) strong, credible, in Dongguan, Guangdong and other hardware accessories industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Chang Sheng Hardware and you hand into the brilliant, for a better future!