SPECIAL TREATMENT OF METALS (MELTS)

SPECIAL TREATMENT OF METALS (MELTS)

Before pouring, molten metals are given certain treatments to purify them or to alter the metallographic structure of the castings

The important melt treatments are

(a) Refining

– Oxidation.

– Deoxidation.

– Degassing.

– Desulphurization.

(b) Inoculation

– Grain and constituent refinement.

– Refinement and eutectic modification.

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