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Graphite crucible - maintaining 1, specifications that copper crucible capacity (#/ kg) 2, the graphite crucible to prevent wet storage must be kept in a dry place or the gallows. 3, when moving gently, it is strictly prohibited earthquake. 4, before the use of the drying equipment or furnace hot baking, temperature rise to 500 degrees Celsius. 5, should be placed in the mouth below the surface of the crucible furnace crucible is cover wear prevention. 6, feeding should be based on the crucible dissolution, can not be added too much, too tight to prevent tightening crucible. 7, out of things and to comply with the shape of crucible clamp, clamp the central prevention department stress damage of crucible. 8,…
The development of semiconductor and the application of graphite materials in the semiconductor industry are inseparable. In the semiconductor industry, a large number of high purity graphite materials are used in the heating system of the single crystal furnace. In the semiconductor wafer processing (including the zone melting, epitaxy, contour processing, etc.) the graphite materials are the auxiliary tool, parts, in the production of polysilicon materials used in the semiconductor silicon wafer as an auxiliary tool, parts. Graphite products for electronic engineering, first of all, to achieve the application in the semiconductor industry. Entering the 21st century, photovoltaic industry has been rapid development, the polysilicon ingot material used in solar battery appeared rapid increase on the yield and market ,…
The crucible can be divided into three categories: graphite crucible, clay crucible and metal crucible. In graphite crucible, there are three kinds of graphite crucible and special graphite crucible and high pure graphite crucible. Various types of graphite crucible, due to different properties, uses and conditions of use, the use of raw materials, production methods, process technology and product model specifications are also different. The main raw material of the graphite crucible is the crystalline form of natural graphite. So it keeps all kinds of physical and chemical characteristics of natural right ink. That is: with good thermal conductivity and high temperature resistance, in the use of high temperature, the thermal expansion coefficient is small, the heat and cold has…
