Q:Can graphite crucibles be used for both melting and casting?

Both melting and casting can be done using graphite crucibles. Graphite is well-known for its exceptional heat resistance and high melting point, making it an ideal choice for containing molten metals during the melting process. Furthermore, graphite crucibles possess excellent thermal conductivity, enabling efficient heat transfer and uniform heating of the molten metal. Once the metal has melted, the graphite crucible can also serve as a casting tool. The molten metal can be poured directly from the crucible into a mold, allowing for the creation of various shapes and forms. Graphite crucibles are typically durable and can withstand multiple heating and cooling cycles, making them suitable for both melting and casting procedures. However, it is essential to acknowledge that graphite crucibles may not be suitable for all types of metals. Some reactive or corrosive metals can react with graphite at high temperatures, leading to contamination of the molten metal. In such cases, alternative crucible materials, such as ceramic or refractory metals, may be more appropriate.

Q:How to break 40 low carbon steel smelting

High pressure pipes are generally welded by argon arc welding, whether they are carbon steel, alloy steel or stainless steel;

Q:Why is the crucible burned and then black, oxidized, chemically?

The burning of incomplete carbon is attached, I think. Candles, for example, often do.

Q:Is it often influenced by graphite tube replacement in atomic absorption furnace?

The instrument from the light source radiation with the measured spectral line of light, when the steam by the steam through the specimen to be measured in the ground state of the atom elements absorbed by the radiation characteristic spectrum of light is reduced the degree of determination of sample analyte. Because of the atomic absorption spectrometer is sensitive, accurate and simple characteristics, has been widely used in metallurgy, mining, geological analysis, petroleum, light industry, agriculture, medicine, health, food and environmental monitoring etc. the major and trace elements.

Q:Can graphite crucibles be used for precious metal refining?

Yes, graphite crucibles can be used for precious metal refining. Graphite crucibles are often preferred in the refining process due to their high melting point, excellent thermal conductivity, and resistance to chemical corrosion. They are commonly used for melting and holding precious metals such as gold, silver, platinum, and palladium. The high temperature resistance of graphite ensures that it can withstand the extreme heat required for the refining process, while its thermal conductivity allows for efficient and uniform heat distribution. Additionally, graphite crucibles are chemically inert, meaning they do not react with the precious metals being refined, ensuring the purity of the final product. Overall, graphite crucibles are a reliable and effective tool for precious metal refining.

Q:Can graphite crucibles be used for carbon fiber production?

Yes, graphite crucibles can be used for carbon fiber production. Graphite crucibles are able to withstand high temperatures and are chemically inert, making them suitable for the production process of carbon fibers.

Q:What is the main function of graphite?

Wear resistant materials: graphite is often used as a lubricant in the mechanical industry. Lubricants can not be used in high speed, high temperature, high pressure conditions, and graphite wear-resistant materials can be at 200~2000 degrees Celsius temperature in a high sliding speed, without lubricating oil work. Many devices for conveying corrosive media are made of graphite materials, piston cups, seals and bearings. They do not need to be lubricated when running. Graphite is many metal processing (drawing, drawing) the good lubricant.

Q:Are graphite crucibles suitable for melting composite propellants?

Composite propellants are generally unsuitable for melting in graphite crucibles. Composite propellants are composed of oxidizers, fuels, and binders, which can be highly reactive and corrosive. Although graphite is known for its high melting point and resistance to high temperatures, it can react with certain components of composite propellants. When exposed to certain oxidizers like ammonium perchlorate, which is commonly found in composite propellants, graphite crucibles can undergo chemical reactions and erosion. This can result in contamination of the propellant and impact its performance. Additionally, the binders used in composite propellants can also react with graphite, causing the crucible to degrade and potentially fail. To melt composite propellants, it is advisable to use crucibles made from materials specifically designed for this purpose, such as ceramic or refractory metal crucibles. These materials have superior resistance to the corrosive nature of composite propellants and can withstand the high temperatures involved in the melting process.

Q:The difference between single graphite furnace graphite furnace atomic absorption spectrophotometer and double graphite furnace

The graphite furnace atomic absorption spectrometer and the flame atomic absorption spectrophotometer belong to the atomic absorption spectrometer. They are composed of light source, atomization system, spectroscopic system and detection system.

Q:Can graphite crucibles be used for eutectic growth?

Yes, graphite crucibles can be used for eutectic growth. Graphite has excellent thermal conductivity and can withstand high temperatures, making it suitable for many high-temperature applications, including the growth of eutectic alloys.