Engineering Materials
Cyaniding is the process of

Dipping steel in cyanide bath
Adding carbon and nitrogen by heat treatment of steel to increase its surface hardness
Reacting steel surface with cyanide salts
Obtaining cyanide salts

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Engineering Materials
Recrystallization temperature is one

At which crystals first start forming from molten metal when it is cooled
At which change of allotropic form takes place
At which crystals grow bigger in size
At which new spherical crystals first begin to form from the old deformed one when a strained metal is heated

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