China Copper Sculpture Industry Network News     China Copper Sculpture Industry Network recommends the copper problem for copper sculpture  1. Classification of natural copper according to the existence of nature in the natural world ------ metal copper in the free state of existence in the natural world, the copper content is above 99%, but the reserves are extremely small; 2. Classification of copper concentrates according to the production process---the ore with higher copper content selected before smelting. 3, according to the main alloy composition classification copper ----- generally can be considered as pure copper, conductivity, plasticity are better, but the strength, hardness is worse. The main varieties are oxygen-free copper, copper, phosphorus deoxidized copper, silver and copper; White copper----- refers to copper-nickel alloy, which is a copper-based alloy with nickel as the main additive element. It is silver-white and has metallic luster, hence the name white copper. 4. Classified by product form: copper tube, copper rod, copper wire, copper plate, copper strip, copper strip, copper foil, etc. When we choose the amount of copper material, we must look at his color, copper, copper is good copper, and brass, light color. There is also a zinc plated on the copper, some tin plated, white, and a kind of inferior copper. There are impurities in the copper, and it is broken into two pieces by a hand, and there are black impurities inside. As we all know, bronze sculpture can be divided into forged bronze sculpture and cast bronze sculpture. Among them, bronze sculpture is the most complicated one in sculpture process, but the artistic expression of cast copper has strong value and is other copper crafts. Unmatched, the bronze sculpture is roughly divided into three processes: wax mold, sand sealing and firing. Finally, we need professional technicians to continuously repair and polish the copper carving crafts after molding. China Copper Sculpture Industry Network  Http://tongdiao.99114.com/ Reinforcement Fabric,1050D Oxford Pu Coated Fabric,Nylon Cordura Reinforcement Fabric,600D Polyester Oxford Fabric Wujiang Bonheur Special Textile Co.,Ltd. , https://www.bonheurtex.com
Copper oxide ore-----there is not much copper sulfide ore-----the copper content is extremely low, generally around 2-3%, and more than 80% of the world's copper is refined from copper sulfide ore. .
Crude copper ------ copper concentrate after smelting products, containing copper in the 95-98%.
Pure copper ------ copper with a content of more than 99% after fire or electrolysis. The fire can obtain 99-99.9% pure copper, and the electrolysis can make the purity of copper reach 99.95-99.99%.
Brass----- is an alloy composed of copper and zinc, and can be subdivided into simple brass and complex brass. In the complex brass, the third group is titled nickel brass, silicon brass. Wait;
Bronze----- refers to copper-based alloys other than copper-nickel and copper-zinc alloys. The main varieties are tin bronze, aluminum bronze, and special bronze (also known as high-copper alloy);
What kind of copper is used for copper sculpture?