Railway wagon axles are made by heating rods of iron embedded in charcoal powder. The process is known as [CPMT 1972; DCE 2000; KCET 2003; UPSEAT 2001]

Railway wagon axles are made by heating rods of iron embedded in charc

1.	Railway wagon axles are made by heating rods of iron embedded in charcoal powder. The process is known as [CPMT 1972; DCE 2000; KCET 2003; UPSEAT 2001]
A.	Case hardening
B.	Sherardizing
C.	Annealing
D.	Tempering
Answer» B. Sherardizing

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Railway wagon axles are made by heating rods of iron embedded in charcoal powder. The process is known as [CPMT 1972; DCE 2000; KCET 2003; UPSEAT 2001]

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