Graphite

Graphite

Graphite Crucibles & Components

Graphite Crucibles & Components

Graphite manufacturers hold their own in the refractory world, where the graphite they sell is used to build kiln and blast furnace bricks. It is also used to produce crucibles, ladles and moulds for holding molten metals. Graphite flake is one of the most commonly used materials in the manufacturing of refractories made for the continuous casting of steel. With graphites extremely high melting point, a manufacturer cannot go wrong by catering to the chemical industry.

Graphite is used in such high-temperature processes as the production of phosphorus and calcium carbide in arc furnaces. It is also used to conduct electricity in some aqueous electrolytic processes like the production of halogens like chlorine and fluorine. High purity electrographite is well-suited to the nuclear industry because of its low absorption of neutrons, high thermal conductivity and maintained strength at high temperatures.

For many furnaces and other high-temperature applications, Thermic Edge can offer parts made from extruded graphite. Although slightly lower in strength than ISO Graphite, Extruded Grades are nonetheless ideally suited for many applications including furnace heating elements, fixtures and furniture, susceptors, moulds, crucibles and sintering trays & boats. Extruded graphite is also widely used as a cathode or anode material in a wide variety of electrolytic cell applications.

The silicon is purified, put into a crucible with other elements then melted at a very high temperature. A silicon rod is placed on the surface of the molten silicon in the crucible, and then pulled and rotated to form a monocrystalline ingot.

In ion implantation, the ion beam collisions expose metal components to high amounts of wear. Graphite shields are used to protect such components.

Graphite crucible component
Graphite component
Graphite component assembly
Graphite furnace
Vacuum gauge with graphite equipment
Custom graphite hot zone
Dual graphite hot zone
Graphite hot zone

Applications

Graphite Crucibles & Components

  • Monocrystalline silicon pulling (known as the Czochralski technique, and sometimes called CZ pulling)
  • Crucibles
  • Ladles
  • Moulds for holding molten metals
  • Continuous casting of steel
  • Production of phosphorus and calcium carbide in arc furnaces
  • Aqueous electrolytic processes
  • Production of halogens like chlorine and fluorine
  • Nuclear industry applications
  • Furnace heating elements
  • Fixtures and furniture
  • Susceptors
  • Sintering trays & boats
  • Cathode or anode material in electrolytic cell applications
  • Graphite shields for ion implantation

Graphite Properties

  • Stability and strength at high temperatures (up to 3200 C in non-oxidizing atmospheres)
  • High resistance to thermal shock
  • High conductivity of solid; low conductivity of porous foam, cloth and tape.
  • Low coefficient of thermal expansion.
  • Good electrical conductivity.
  • High compressive strength.
  • High resistance to erosion.
  • Good machinability.
  • Low friction; self-lubrication.
  • High resistance to chemical attack and corrosion.
  • High adsorption of gases and vapours.
  • High moderating ratio; i.e. ratio of fast neutrons slowing-down power to bulk neutron absorption coefficient.
  • High ratio of thermal neutron scattering to absorption cross section.

Carbon-Carbon Composite

Carbon/Carbon composite materials combine unique properties of the element Carbon (especially high heat and chemical corrosion resistance) and physical properties of carbon fibers, that give the final product high strength and elasticity.

C/C composites are produced from carbon fibers, that are laid up in layers to form carbon fiber matrix. These composites enable to produce parts with excellent heat resistance, of light weight, and high strength.

Carbon-Carbon Composite table component
Carbon-Carbon Composite table
CCC element sample heater
CCC element
4 inch CCC element
2 inch CCC element

Carbon-Carbon Composite Applications

  • Furnace construction components
  • Heat shields
  • Heating elements
  • Carrier racks and plates
  • CFC screws and nuts

Graphite Crucibles & Components FAQs

What is graphite used for?

Graphite is used for crucibles, ladles and moulds for holding molten metals, refractories for the continuous casting of steel, high-temperature furnace processes, aqueous electrolytic processes, nuclear industry applications, furnace heating elements, fixtures, furniture, susceptors, sintering trays and boats, cathode or anode materials, and graphite shields for ion implantation.

Why is graphite suitable for high-temperature applications?

Graphite offers stability and strength at high temperatures, with use up to 3200 C in non-oxidizing atmospheres. It also offers high resistance to thermal shock, low coefficient of thermal expansion, good electrical conductivity and high resistance to chemical attack and corrosion.

What applications are suitable for extruded graphite?

Extruded Grades are suited for applications including furnace heating elements, fixtures and furniture, susceptors, moulds, crucibles and sintering trays & boats. Extruded graphite is also widely used as a cathode or anode material in electrolytic cell applications.

How is graphite used in silicon pulling?

The silicon is purified, put into a crucible with other elements then melted at a very high temperature. A silicon rod is placed on the surface of the molten silicon in the crucible, and then pulled and rotated to form a monocrystalline ingot.

What is the Czochralski technique?

Monocrystalline silicon pulling is known as the Czochralski technique, and is sometimes called CZ pulling.

Why are graphite shields used in ion implantation?

In ion implantation, the ion beam collisions expose metal components to high amounts of wear. Graphite shields are used to protect such components.

What are Carbon-Carbon composite materials?

Carbon/Carbon composite materials combine unique properties of the element Carbon, especially high heat and chemical corrosion resistance, with the physical properties of carbon fibers. This gives the final product high strength and elasticity.

What are Carbon-Carbon Composite applications?

Carbon-Carbon Composite applications include furnace construction components, heat shields, heating elements, carrier racks and plates, and CFC screws and nuts.

How do I request Graphite Crucibles or Graphite Components?

To request Graphite Crucibles or a custom Graphite component quote, use the Thermic Edge contact page, email sales@thermic-edge.com, or complete the form on this page.

Request a Quote

Please contact Thermic Edge with your Graphite Crucibles or custom Graphite component requirements, including the application, operating temperature, environment, material grade, quantity and drawing details where available.

You can also email sales@thermic-edge.com or use the form below.

Graphite Crucibles & Components

Graphite manufacturers hold their own in the refractory world, where the graphite they sell is used to build kiln and blast furnace bricks. It is also used to produce crucibles, ladles and moulds for holding molten metals. Graphite flake is one of the most commonly used materials in the manufacturing of refractories made for the continuous casting of steel. With graphites extremely high melting point, a manufacturer cannot go wrong by catering to the chemical industry.

Graphite is used in such high-temperature processes as the production of phosphorus and calcium carbide in arc furnaces. It is also used to conduct electricity in some aqueous electrolytic processes like the production of halogens like chlorine and fluorine. High purity electrographite is well-suited to the nuclear industry because of its low absorption of neutrons, high thermal conductivity and maintained strength at high temperatures.

For many furnaces and other high-temperature applications, Thermic Edge can offer parts made from extruded graphite. Although slightly lower in strength than ISO Graphite, Extruded Grades are nonetheless ideally suited for many applications including furnace heating elements, fixtures and furniture, susceptors, moulds, crucibles and sintering trays & boats. Extruded graphite is also widely used as a cathode or anode material in a wide variety of electrolytic cell applications.

The silicon is purified, put into a crucible with other elements then melted at a very high temperature. A silicon rod is placed on the surface of the molten silicon in the crucible, and then pulled and rotated to form a monocrystalline ingot.

Applications: Monocrystalline silicon pulling (known as the Czochralski technique, and sometimes called CZ pulling)

In ion implantation, the ion beam collisions expose metal components to high amounts of wear. Graphite shields are used to protect such components.

To buy Graphite Crucibles or request a sales quote for a custom Graphite component, 

Graphite Properties

Carbon-Carbon Composite

Carbon/Carbon composite materials combine unique properties of the element Carbon (especially high heat and chemical corrosion resistance) and physical properties of carbon fibers, that give the final product high strength and elasticity.

C/C composites are produced from carbon fibers, that are laid up in layers to form carbon fiber matrix. These composites enable to produce parts with excellent heat resistance, of light weight, and high strength.

Carbon-Carbon Composite Applications

  • Furnace construction components
  • Heat shields
  • Heating elements
  • Carrier racks and plates
  • CFC screws and nuts