How tough is the crucible? Even molten steel at over a thousand degrees Celsius cannot melt it. What material is the crucible made of
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A crucible is a container used to melt materials such as metals and ceramics. Crucibles play an important role in industrial production, especially in fields such as metallurgy, chemistry, and oil refining
A crucible is a container used to melt materials such as metals and ceramics. Crucibles play an important role in industrial production, especially in fields such as metallurgy, chemistry, and oil refining.
Crucibles are mainly used in the following situations:
Molten metal:In the metallurgical industry, crucibles are important tools for melting metals. By placing metal in a crucible and heating it to a high temperature, the metal can be melted.
Sintered ceramics:In the process of making ceramics, crucibles are an important tool. Ceramic materials can become hard and durable after sintering in a crucible.
Fine Chemistry Experiment:In chemical experiments, crucibles can be used to heat chemical substances, making their reactions more thorough.
The Development History of Crucibles
The history of crucibles can be traced back to ancient Babylon around 2000 BC. At that time, people had already made some crucibles using graphite and quartz for melting and manufacturing alloy steel.
In China, the invention of the crucible can be traced back to the Spring and Autumn period and the Warring States period. According to historical records, blacksmiths at that time had already used an instrument called a "silver printing crucible" for steelmaking.
This crucible is made of graphite and can withstand high temperatures. It is widely used in China's metallurgical industry and continuously improved and optimized in long-term use.
During the Middle Ages, the metallurgical industry in Europe began to develop. People have used quartz, graphite, and ceramic materials to create more durable crucibles for producing high-quality steel and copper alloys.
In the 18th century, with the rise of modern industry, the manufacturing technology of crucibles was further improved. People began to use diamonds, ceramics, and other new materials to manufacture crucibles, and adopted more precise production processes.
Today, crucibles have become indispensable tools in industrial production. They are widely used globally in fields such as chemistry, metallurgy, pharmaceuticals, food processing, and electricity.
Materials and manufacturing process of crucibles
There are many types of materials used for making crucibles, including quartz, graphite, ceramics, diamonds, etc. Different materials have different characteristics and are widely used in different industries.
Quartz crucible:It has good resistance to high temperature and chemical corrosion, so it is widely used in the chemical and power industries. The quartz crucible is usually made of quartz sand or quartz glass.
Graphite crucibleGraphite crucible
Ceramic crucibleIt is usually made of high-temperature resistant materials such as aluminum oxide and silicon nitride, which have excellent chemical corrosion resistance and high-temperature resistance.
Diamond crucible:The crucible made of new materials has extremely high heat resistance and corrosion resistance, suitable for high temperature and strong acid and alkali environments. Diamond crucibles are usually manufactured using chemical vapor deposition technology.
The manufacturing process of crucibles mainly includes several methods such as injection molding, extrusion, molding, pressing, and molds.Different materials and specific uses require different manufacturing processes.Generally speaking, the manufacturing of crucible requires multiple fine processing and sintering to ensure its high strength, heat resistance and chemical stability.
Why does the crucible not melt?
Graphite crucible30002713
In addition, the material of the crucible usually has good thermal conductivity, which can quickly evenly distribute the temperature inside the crucible. This helps to avoid localized melting or cracking of the crucible at high temperatures.
In short, the high temperature resistance and good thermal conductivity of the crucible are important reasons why it will not melt. This characteristic makes crucibles an indispensable tool in industrial production, widely used in processes such as melting metals, manufacturing ceramics, and chemical reactions.
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