A crucible is a specialized container used to melt metal materials at very high temperatures. The melted material is cast into new objects or used to manufacture new alloys (different metals are combined in specific proportions). Due to the use of crucibles for melting materials at high temperatures, the materials used for manufacturing crucibles need to have a higher melting point than the molten metal.
Let's talk about crucibles made of different materials and their uses. Different types of crucibles have different uses, including research, experimentation, chemical analysis, industrial testing, quality control, and even academic research.
Ceramic crucible
These crucibles are made from kiln fired clay. They are stable at high temperatures. Ceramic crucibles have a history of over 7000 years for metal processing. Most ceramic crucibles are used in combination with clay and graphite to ensure durability.
Tungsten crucible
Tungsten crucibles are products made of tungsten metal, which has very high heat resistance. The crucible temperature can reach up to 3410 ℃. The manufacturing process of tungsten crucibles is divided into spinning, stamping, forging, and sintering. Tungsten has resistance to certain molten metals and metal oxides. Tungsten crucibles are widely used in the technology of growing single crystals from molten corundum; It is also used in electronic technology and thermal vapor deposition technology for various substances.
Clay graphite crucible
Graphite crucibles are mainly used for casting nonferrous metals and Ferrous. This is because of their non reactivity, they can withstand very high temperatures.
Molybdenum crucible
Molybdenum is a natural ductile metal with strong corrosion resistance. Apart from tantalum and tungsten, molybdenum is a well-known pure element with a higher melting point. Molybdenum crucibles are widely used in the Heat Exchanger Method (HEM) process. They are suitable for melting and curing single crystals. The ideal molybdenum crucible has thin walls and excellent creep resistance.
Silicon carbide crucible
Silicon carbide crucibles have strong resistance to temperature, making them suitable for use in modern laboratories. In addition, they do not exhibit chemical reactivity and can be used to provide harmless results.
Steel crucible
The stainless steel crucible is made of a single piece of material. They are not as fragile as porcelain crucibles. Steel crucibles are used for low-temperature applications and can be used to melt metals with lower melting points, such as aluminum and zinc. Please note that steel crucibles can quickly scale and peel off, and can contaminate the alloy.
