Electro Slag Remelting
Encyclopedia
ESR or electro slag remelting (also known as electro flux remelting) is a process used for remelting and refining
of steel
s and special alloy
s which are used for critical applications in aircraft, thermal and nuclear power plants, defense hardware, etc.
Electro Slag Remelting uses highly reactive slags (CaF is the main component) to reduce the amount of type A sulfide present in biometal alloys. It is a common practice in European industries. ESR reduces other types of inclusions as well, and is seen as an alternative to the vacuum arc remelting method that is prevalent in US industries.
Refining
Refining is the process of purification of a substance or a form. The term is usually used of a natural resource that is almost in a usable form, but which is more useful in its pure form. For instance, most types of natural petroleum will burn straight from the ground, but it will burn poorly...
of steel
Steel
Steel is an alloy that consists mostly of iron and has a carbon content between 0.2% and 2.1% by weight, depending on the grade. Carbon is the most common alloying material for iron, but various other alloying elements are used, such as manganese, chromium, vanadium, and tungsten...
s and special alloy
Alloy
An alloy is a mixture or metallic solid solution composed of two or more elements. Complete solid solution alloys give single solid phase microstructure, while partial solutions give two or more phases that may or may not be homogeneous in distribution, depending on thermal history...
s which are used for critical applications in aircraft, thermal and nuclear power plants, defense hardware, etc.
Electro Slag Remelting uses highly reactive slags (CaF is the main component) to reduce the amount of type A sulfide present in biometal alloys. It is a common practice in European industries. ESR reduces other types of inclusions as well, and is seen as an alternative to the vacuum arc remelting method that is prevalent in US industries.
See also
- Vacuum Arc RemeltingVacuum Arc RemeltingVacuum arc remelting is a secondary melting process for production of metal ingots with elevated chemical and mechanical homogeneity for highly demanding applications...
- Electron Beam Cold Hearth Remelting
- Vacuum Induction MeltingVacuum Induction MeltingVacuum induction melting is a process for melting metal under vacuum conditions using electromagnetic induction. It works by creating electrical eddy currents in the metal which heats the "charge" to melt it...
External links
- Ensuring Mold Steel Polishability at moldmakingtechnology.com
- Electro-slag remelting furnace for consumable electrodes and having an electrode drive United States Patent 4394765 at freepatentsonline.com