Code No: C1603 JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD M.Tech I SEMESTER EXAMINATIONS, APRIL/MAY-2013 ADVANCED CASTING AND WELDING TECHNOLOGY (PRODUCTION ENGINEERING) Time: 3hours Max.Marks:60 Answer any five questions All questions carry equal marks - - - 1.a) What is laser beam welding? How lasers are produced. b) How important is the reflective qualities of base metals when laser wel ding? 2.a) What are the power-source requirements for electron – beam welding and cutting? b) Explain the importance of depth to width ratio in electron beam welding. 3. Write short notes on the following: a) Welding joint design b) Residual stresses and distortion in the weldment. 4.a) What is directional solidification? Explain its importance. b) What is squeeze casting? Explain the advantages and limitations of this process. c) Compare and contrast between directional solidification and monocrystal solidification. 5.a) What is shall moulding? Explain its advantages and limitations. b) Differentiate between rheocasting and squeeze casting. 6. Draw a neat sketch of gating system and explain the role of each part of the gating system. 7.a) What is the purpose of runner extension? What is its ideal shape? b) What are the different ways of controlling the in gate velocity? Explain. 8. What are the different approaches for castability analysis? Explain. * * * * * * * * * * * R09 www.jntuworld.com www.jntuworld.com www.jwjobs.net www.android.jntuworld.com
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Code No: C1603 JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
M.Tech I SEMESTER EXAMINATIONS, APRIL/MAY-2013 ADVANCED CASTING AND WELDING TECHNOLOGY
(PRODUCTION ENGINEERING) Time: 3hours Max.Marks:60
Answer any five questions All questions carry equal marks
- - - 1.a) What is laser beam welding? How lasers are produced. b) How important is the reflective qualities of base metals when laser welding? 2.a) What are the power-source requirements for electron beam welding and cutting? b) Explain the importance of depth to width ratio in electron beam welding. 3. Write short notes on the following: a) Welding joint design
b) Residual stresses and distortion in the weldment.
4.a) What is directional solidification? Explain its importance. b) What is squeeze casting? Explain the advantages and limitations of this process. c) Compare and contrast between directional solidification and monocrystal
solidification. 5.a) What is shall moulding? Explain its advantages and limitations. b) Differentiate between rheocasting and squeeze casting. 6. Draw a neat sketch of gating system and explain the role of each part of the gating
system. 7.a) What is the purpose of runner extension? What is its ideal shape? b) What are the different ways of controlling the in gate velocity? Explain. 8. What are the different approaches for castability analysis? Explain.
* * * * * * * * * * *
R09
www.jntuworld.com
www.jntuworld.com
www.jwjobs.netwww.android.jntuworld.com
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