Graphite crucible is usually used in smelting metals, especially precious metals . Graphite crucible is made from high quality graphite, have good thermal conductivity and high temperature resistance, high temperature environment used in the thermal expansion is not only the number is small, but also has thermal shock resistance strain performance, acid and alkali resistant with excellent chemical stability. Multiple variety and complete specifications, used in chemical industry, casting and other industrial sectors, the steel smelting and smelting non-ferrous metal and alloy also has been the most widely used.
Graphite crucible due to a high temperature thermal expansion coefficient, and thermal shock has some anti-strain properties, and pH of the solution for anti-corrosive, and has excellent chemical resistance to corrosion stability.
Graphite crucible need to guard against damp, when handling light to take light put, it is forbidden to shock. Before use must be in the hot oven drying equipment or stove, let the temperature gradually rises to 500 ℃, avoid the furnace cover wear and tear of the following should be on the front plane of crucible crucible. Graphite crucible when feeding should be according to the crucible solvent quantity, not charging too much, too tight to avoid expansion of crucible. Both inside and outside the removal of crucible wall gently slag and stick cokes to avoid damage to the crucible. Should keep a proper distance between the furnace wall crucible, crucible should be placed on the center of the furnace. In the use of excessive accelerant, additives will reduce the service life of crucible. Finally, in use process by rotating the crucible every week, can prolong the service life of crucible.
Thus graphite crucible in metallurgy and casting molds, and is widely used in smelting alloy tool steel and non-ferrous metals smelting and alloys, and has a good technical and economic results.