Author Question: Agitating the part in the quenching medium: A) Breaks down the vapor barrier for more rapid ... (Read 47 times)

fbq8i · **on:** Jul 26, 2018

Agitating the part in the quenching medium:

A) Breaks down the vapor barrier for more rapid quenching
B) Causes warping and bending
C) Prevents a fire from occurring
D) Causes the steel to harden to a depth of only one inch

Question 2

Bores of machined parts such as gears and pulleys are not made by drilling in a lathe without further machining because drills:

A) Tend to produce undersized holes that run eccentric to the workpiece axis
B) Tend to produce oversize holes that run eccentric to the workpiece axis
C) Are not made for standard shaft sizes
D) Make bell mouthed holes that must be corrected by reaming or boring