21.
Forging of a plain carbon steel is carried out at
A
1300 degree Celcius
B
750 degree Celcius
C
900 degree Celcius
D
1100 degree Celcius
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Forging of a plain carbon steel is carried out at
1300 degree Celcius
750 degree Celcius
900 degree Celcius
1100 degree Celcius
Forging lubricants are:
graphite based
oil based
water based
lead based
Forging is done when the metal is in
None of the above
Liquid condition
Plastic condition
Elastic condition
Forging is done at
None of the above
the melting point of the metal
below the melting point of the metal
above the melting point of the metal
Forging as a process is closely related to:
blacksmithing
welding
machining
casting
Flash refers to:
part ejection
the closing of the dies
excess metal flowing out of a die
fuming of the lubricant
Cast iron cannot be forged because it has the property of
Brittleness
Softness
Stiffness
Toughness
Anvil is a
Light block of aluminium
Heavy block of cast steel
Heavy block of mild steel
Heavy block of high carbon steel
Another name for closed die forging is:
hammering
impression forging
drop forging
cast forging
A high speed steel has to be forged. Which colour indicates the most suitable forging temperature ?
Yellow
Light yellow
Dark cherry red
White
A high carbon steel has to be forged. Which colour indicates the most suitable forging temperature ?
Light yellow
Yellow
Dark cherry red
White