What is the brass and copper processing process?
Raw materials, copper processing, the need for a certain process technology, re-transformation to produce different forms of products, copper smelting and casting the main purpose to get a certain chemical composition and temperature of the melt, remove the melt gas and harmful impurities, for the plastic processing to provide billet The Copper, brass, bronze and other alloys generally use iron core frequency induction furnace for melting, furnace capacity of 12 to 15 tons or more, two melting furnace and a holding furnace for a group, while casting two flat ingots. In recent years, with natural gas as the fuel shaft furnace smelting of copper, melting and feeding furnace to the casting, the tank is equipped with protective gas nozzle, the furnace output of more than 10 tons per hour. Special alloys are sometimes smelted with high frequency induction furnaces or medium frequency induction furnaces. Copper and copper alloy, especially copper, smelting when the gas is large, dissolved in metal gas will make the ingot to produce pores, often using logs and phosphorus, manganese and other elements for deoxidizer; to prevent the metal and low melting point alloying elements And oxidative burning, can be covered with charcoal or borax. The billet is mainly made of vertical semi-continuous, continuous or horizontal continuous casting. Horizontal continuous casting slab in recent years, the rapid development of cast slab thickness of up to 10 to 20 mm, brass thickest up to 40 mm, the maximum width of up to 800 mm, and some alloys using micro-stroke reverse thrust. Difficult to carry out hot-rolled tin-phosphorus brass, lead brass, etc. have been widely used in the level of continuous casting with blanks on the machine through the milling and homogenization after the volume into a coil, as cold rolled strip, the volume depends on the rolling mill capacity may be Up to 5 to 10 tons or more, smelting rapid component analysis can be reported for 3 minutes. Casting should control the casting temperature, casting speed, cooling strength and mold height.
Including now with a wide range of continuous casting effect is also contributed to the copper processing, continuous casting and rolling technology has been applied to copper processing. Continuous casting and rolling process in the continuous casting of the main use of moving mold forming method. According to the structure can be divided into belt type, double belt and two roll three. There are a variety of rolling mill, strip rolling mill has 3 to 7 racks, wire rolling mill up to 18 to 23 racks. Rolling with a rolling mill thickness of 2 to 6 mm, billet diameter of 6 to 12 mm.
As technology advances, copper processing is becoming more and more diversified. It is also more and more widely applied to the people to create more industrial production value.
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