Q.1
14 Marks(a)
Differentiate open die forging and closed die forging
(b)
What is clearance in sheet metal work? Also state its importance
(c)
Explain Forming Limit Diagram with neat sketch also state its importance in forming process.
Gujarat Technological UniversitySummer 2026 examination
GTU 3171921 Metal forming analysis Summer 2026 Question Paper & PDF
B.E. · Mechanical Engineering · Semester 7 · Subject code 3171921
- Total
- 70 marks
- To pass
- 23 marks (33%)
- Duration
- 2.5 Hours 2:30 PM – 5:00 PM
- Questions
- 5 with internal choice
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Q.2
14 Marks(a)
What is principle of forging process? Also state its applications.
(b)
Identify upset forging process with neat sketch.
(c)
Explain in detail Two-Dimensional Mohr's circle diagram for stress analysis.
OR
(c)
What do you know about Tresca yield criteria elaborate with necessary sketches
Q.3
14 Marks(a)
Determine the maximum permissible reduction for cold rolling a 300 mm thick slab when is μ=0.08 and roll diameter 600 mm. what is maximum reduction on same mill for hot rolling when μ =0.5.
(b)
Discuss the different defects in extrusion processes.
(c)
Explain direct extrusion process along with advantages and disadvantages .
OR
(a)
Discuss material sued in wire drawing die.
(b)
Explain the effect of
1)coefficient of friction
2)diameter of roll
3)backward and
forward tension on rolling load.
(c)
Identify difference between Hydrostatic extrusion and impact extrusion also explain Hydrostatic extrusion with sketch.
Q.4
14 Marks(a)
What do you mean by Drawability? List factor Affecting to Drawability.
(b)
Elaborate the defects of extrusion process.
(c)
Using slab Method Derive the formula for Rolling Load with usual notations.
OR
(a)
Explain angle of bite and its importance in rolling process.
(b)
Differentiate direct and indirect extrusion process.
(c)
Analyze slip line and upper bound method for extrusion process.
Q.5
14 Marks(a)
Identify nesting in sheet metal process.
(b)
Find out difference between compound die and progressive die.
(c)
What is deep drawing process? Discuss various stress develop in it with neat sketch.
OR
(a)
Elaborate spring back effect in bending process.
(b)
Define
1)punching
2)Nibbling
3)Lancing
4)Notching for press work.
(c)
A circular blank of 30 mm diameter is to be cut from 2 mm thick 0.1C steel sheet. Determine the die and punch size also estimate the punch force and stripping force needed. You may assume the following for steel: tensile strength 410 MPa, shear strength 310 MPa.
Other Semester 7 subjects
BE Mechanical
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About this paper
Official Gujarat Technological University (GTU) examination paper for Metal forming analysis (Summer 2026, B.E. · Mechanical Engineering, Sem 7). Features complete 70-mark regular & remedial examination pattern, official marking distribution across all 5 questions, and direct 1-click official PDF download.
Transcribed for student exam preparation from Gujarat Technological University official examination archives. Questions, syllabus guidelines, and curriculum marking schemes remain the intellectual property of Gujarat Technological University.