Molybdenum and molybdenum alloys can be made by powder metallurgy and vacuum melting blank for further processing, and which in addition to pure molybdenum processing method as may be drawn into a wire rod and swaging and beyond, can also be used forging, hot extrusion Deep processing is carried out by methods such as rolling. The billet obtained by the powder metallurgy method can be directly put into deep processing because the grain structure is fine and uniform. The billet obtained by the vacuum smelting method must first be hot-extruded to change its structure before deep processing. Compared with pure molybdenum, the molybdenum alloy processing specification has more heating times and higher processing pressure. For example, when the molybdenum alloy is forged to ensure a fine grain structure, when deformed at 1250 to 1400 ° C, the deformation amount per pass is greater than 15%. Since the recrystallization temperature of the molybdenum alloy is 300 to 500 ° C higher than that of pure molybdenum, the deformation processing temperature of the alloy should be higher than that of pure molybdenum. In rolling, in order to obtain high-quality sheets, at the beginning of rolling, the amount of reduction per pass is quite large, so that the deformation of the metal along the entire section is as uniform as possible. For detailed knowledge of deep processing techniques for molybdenum and molybdenum alloys, the reader is expected to refer to the literature "Molybdenum Alloys" (Metallurgical Industry Press, Beijing, 1984).
As the name implies, Round Molded Graphiteis a cylindrical product of graphite electrode, which is made of graphite block materials by crushing, screening, batching, shaping, cooling, roasting, dipping and graphitization of post section petroleum coke and medium temperature coal tar pitch. It has the advantages of high temperature resistance, corrosion resistance, good conductivity and light weight. It is mainly used for large DC resistance furnaces, blast furnace bricks, conductive electrodes, lining anti-corrosion and other purposes.
The high-purity graphite, graphite block and Molded Graphite produced by Pingdingshan Carbon Graphite Factory for many years are excellent, and the specifications of Round Molded Graphite are as follows: φ 450*800, φ 520*400 φ 630*420, φ 660*620 φ 780*600, φ 820*350~500 φ 900*350~400, φ 1050*350~400 φ 980~350*400, φ 1160*350~680 φ 1260*350~680, φ 1330*400 φ 1420*400, φ 1520*400 φ 1630*350, φ 1800*350 φ 2000*350, φ 520~2000*680
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