GATE ME · 2022 · ME
Question 58: Casting, Forming and Joining Processes
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Question 58
MENAT2 marksNeeds review
A cylindrical billet of 100 mm diameter and 100 mm length is extruded by a direct extrusion process to produce a bar of L-section. The cross sectional dimensions of this L-section bar are shown in the figure. The total extrusion pressure (
) in MPa for the above process is related to extrusion ratio (
) as
where
is the mean flow strength of the billet material in MPa,
is the portion of the billet length remaining to be extruded in mm,
is the initial diameter of the billet in mm, and
is the die shape factor.If the mean flow strength of the billet material is 50 MPa and the die shape factor is 1.05, then the maximum force required at the start of extrusion is __________ kN (round off to one decimal place).
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2022ME
GATE ME 2022 · Paper 2
Mechanical Engineering · Original paper archive
- Section
- Mechanical Engineering
- Question type
- Numerical answer (NAT)
- Marks
- 2 marks
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