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The graphite heating unit is the electric furnace heating heater parts which are made of the graphite materials. The graphite has excellent electrical conductivity and thermal conductivity. In the special industrial furnace, graphite is used as a heating unit. In the early selection of industrial furnace , the graphite electrode is the heating unit, the high density of high power electrode is used as heating unit later (smelting quartz glass also use graphite electrode as the heating unit). Along with semiconductor industry development, the heating furnace which refine silicon, single crystal germanium, gallium, indium, indium and other materials select high purity ,fine structure graphite and isotropic graphite for heating. Some special industrial furnace and experimental furnace used carbon cloth or…
To prevent the heating material out, the crucible does not usually carry the melting stuff too full, and let the air for oxidation of free import and possible. The crucible for the bottom is very small, generally need to frame in the mud triangle to fire direct heating. Crucible in the iron triangle with is placed or diagonal can be seen, the requirement of experiment can be placed. The crucible after heating can not immediately be placed in cold metal on the desktop, in order to avoid it because of rapid cooling and rupture. Could not be immediately placed on a wooden table, to avoid scalding desktop or cause a fire. The correct approach for detaining natural cooling in iron…
As everyone knows, the graphite has a sheet crystal structure and good lubrication performance like molybdenum sulfide and MOS2. And it also has good electrical conductivity, thermal conductivity, wear resistance, pressure resistance, temperature resistance (temperature can be up to 450 degrees C) and chemical stability of memory and characteristics, so the graphite are widely used to manufacture various lubricants in the machinery industry. Used as the graphite lubricant, it mainly makes the graphite particles distributed uniformly in the form stable colloidal matter in water, oil or other medium, it can directly use inunction, dip coating or spraying way to add to the parts which need the lubrication, it can also be added to a variety of lubricants. It is in…
