[Solved] For machining of high melting point materials, wires are used.

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Q.	For machining of high melting point materials, wires are used.
A.	gallium
B.	zinc coated
C.	aluminium coated
D.	silver
Answer» B. zinc coated
Explanation: zinc coated wire is used in machining high melting point workpiece materials. the zinc coating vaporises in lower temperature than the brass core. vaporisation reduces the amount of heat that transmits to the brass and the core wears less.

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