Application and characteristics of graphite sagger crucible
Crucible can be used for intensity heating of a large number of crystals. Crucible can be divided into graphite crucible and quartz crucible. Graphite crucible has good thermal conductivity and high temperature resistance; In high temperature application, the coefficient of thermal expansion is very small. It has strong strain resistance to extreme heat and cold. It is resistant to strong acid and alkali. It is suitable for heating a variety of liquids; In addition to chemistry, graphite crucibles are widely used in metallurgy, casting, machinery, chemical industry and other departments; The graphite crucible is made of natural graphite material, which maintains the original excellent special fire heating of graphite. The graphite crucible is mainly used for smelting non-ferrous metals such as copper, aluminum and alloy. There are countless features of graphite crucible itself. Here we will briefly list one or two for you.
1. Less pollution, because clean power such as natural gas or liquefied gas can be used as fuel and less pollution.
2. Low energy consumption, because the graphite crucible has reasonable planning, advanced structure and novel materials. After testing, the energy consumption is lower than that of the same type of furnace.
Resistance furnace high purity graphite crucible is mainly used for smelting gold, silver and rare metals. Ceramic crucibles are mainly used in laboratories and smelting of platinum, gold and rare metals. Can the graphite crucible be operated at a high temperature of 2000 ℃ under the condition of air? Will it decompose and oxidize violently? Will it carburize the molten metal? The most important thing is that carburizing is fatal. Under normal circumstances, it can reach 2000 degrees in the air, but it will oxidize rapidly. The problem of metal carburization must exist. Now there is a special anti carburizing coating on the market, which is rumored to have a good effect.
Post time: Dec-20-2021