Use of different crucible
Porcelain crucible
These cauldrons are made of kiln - fired clay. They are stable at high temperatures. Ceramic crucible has been used for metal processing for more than 7,000 years. Most ceramic crucible is used in combination with clay and graphite to ensure durability.
Tungsten crucible
Tungsten crucible is made of tungsten metal, tungsten has very high heat resistance. Crucible temperature up to 3410℃. The manufacturing process of tungsten crucible is divided into spinning, stamping, forging and sintering. Tungsten is resistant to certain molten metals and metal oxides. Tungsten crucible is widely used to grow single crystal from fused corundum. It is also used in electronics and thermal vaporization deposition of various substances.
Clay graphite crucible
Graphite crucible is mainly used for casting non-ferrous metals and ferrous metals. This is due to their non-reactivity, which allows them to withstand very high temperatures.
Molybdenum crucible
Molybdenum is a naturally ductile metal with strong corrosion resistance. After tantalum and tungsten, molybdenum is known to have the highest melting point of any pure element. Molybdenum crucible is widely used in heat exchanger (HEM) process. They are suitable for melting and curing single crystals. Ideal molybdenum crucible has thin wall and excellent creep resistance.
