Carbide tipped cutting tools are manufactured by powder metallurgy tec – McqOptions

MCQOPTIONS

1.	Carbide tipped cutting tools are manufactured by powder metallurgy techniques and have a composition of
A.	90% tungsten carbide and 10% cobalt.
B.	70% aluminium oxide & 30% silica.
C.	30% nickel, 15% chromium & 55% tungsten.
D.	65% tungsten & 35% zirconium.
Answer» B. 70% aluminium oxide & 30% silica.

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