Copper materials can be simply divided into two categor […]
Copper materials can be simply divided into two categories, one of which is pure copper, and the other is the composition of various copper alloys. What is a copper alloy? According to Baidu's explanation, an alloy is a substance with metallic properties synthesized by two or more metals and metals or non-metals by a certain method. Generally obtained by melting into a uniform liquid and solidification. Copper alloy obviously means that the alloy contains copper. It can be simply understood as an alloy composed of copper alloy (copper alloy) using pure copper as a matrix and adding one or several other elements. Then the metallic copper is refined into anode copper in the reverberatory furnace; or the mixed copper is first converted into blister copper through the converter. It is refined into anode copper in the reverberatory furnace. Because these two methods have to go through two processes, it is called two-stage method. The metallic copper obtained by blast furnace melting has a high impurity content and is black, so it is called black copper.
Pure copper is divided into 3 types, namely oxygen-free copper, red copper, phosphorus deoxidized copper. The purity of oxygen-free copper copper is greater than 99.95%. Due to high electrical conductivity, stable processing performance, good weldability, corrosion resistance and low temperature performance. Therefore, it is widely used in the manufacture of bus bars, conductive strips, waveguides, coaxial cables, vacuum seals, vacuum tubes, transistor parts, etc .; usually we say red copper, which refers to copper containing more than 99.95%, which must be a very small amount Impurities, because the purity of the red copper is very high, the composition of the soot produced is simple, easy to handle, the grade of blister copper is high, the operation of the refining furnace is easy, and the productivity of the equipment is also high. , Large investment and high fuel consumption. Therefore, in addition to the large-scale enterprises that need to deal with some special waste residues, the general waste and miscellaneous copper treatment process mostly adopts the two-stage method and the one-stage method.
For this reason, the conductivity of red copper is greatly reduced compared with other materials. Red copper is widely used in the production of electrical equipment and heat exchangers such as generators, busbars, cables, switchgears, transformers, etc .; the copper content of phosphorus deoxidized copper reaches more than 99.90%, and the welding performance and cold bending performance are good. It is widely used in the production of gasoline or gas Conveyor pipes, drain pipes, condenser pipes, mine pipes, condensers, evaporators, heat exchangers, train box parts.