Quiz 6 Flashcards
(10 cards)
What is the difference between extrusion and drawing?
In drawing, the material is pulled out of the die, while in extrusion the material is pushed to the die.
Which of the below parameters does not affect the required extrusion force?
Melting temperature of metal
How can we decrease the volume of Dead Zone in extrusion process?
By decreasing the friction
What is the effect of temperature on the extrusion process?
Higher temperatures makes it easier for the metal to extrude (large forces)
What is Chevron Crecking?
Central cracks occuring at the center of the extruded parts.
Which of the below parameters has no effect on the Drawing required force?
Volume of the alloy
What is the difference between plates and sheets in metals?
Plate: thicker than 6mm.
Sheet: thinner than 6mm.
What is Barreling in open-die forging?
Change in the shape of the billet due to compression.
Deep drawing process is normally done on which ttype of material?
Sheet metals
What is anisotropy in mechanical properties of sheet metals?
Differences in mechanical properties in different directions.
