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ESR
process 
In the
Electro Slag Refining (ESR) process, a small pool of liquid metal
solidifying beneath a layer of super heated slag, isolated from the
environment is refined by absorption of inclusions and reduction
in sulphur content.
Fast
cooling conditions minimize segregation during solidification and carbides
formed are finer. ESR steels remain free of defects like
blow holes/shrinkage, internal and surface cracks, etc.
ESR
steels produced at AV Alloys offer superior tool performance due
to finer grain size, low inclusion level, better homogeneity and uniform
carbide distribution.
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