Name
Reg No B
APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
07 THRISSUR CLUSTER
FIRST SEMESTER M.TECH. DEGREE EXAMINATION DEC 2017
Mechanical Engineering Dept.
M.Tech. in Production Engineering
07ME 6203 ADVANCED CASTING AND JOINING
Time:3 hours Max.marks: 60
Answer all six questions. Part of each question is compulsory.
Answer either part or part of each question
Q.no. Module 1 Marks
1a Explain shell moulding with neat sketches. 4
Answer b or c
b What are the typical situations in which the following casting processes are
used?
Precision investment casting
Shell moulding
Pressure die casting
5
c Specify the advantages of the precision investment casting process over
other casting processes.
5
Q.no. Module 2 Marks
2a Explain illustrate Centrifugal casting. 4
Answer b or c
b Explain Solidification of pure metals. 5
c Explain Rheocasting and semisolid metal casting. 5
Q.no. Module 3 Marks
3a Describe the objectives of gating systems in any casting. 4
Answer b or c
b Give the differences between the following sand casting defects from the
standpoint of their causes and remedies.
Metal penetration and fusion
5
Rattails and cuts and washes
c Explain X-ray radiography as method of inspection of castings. 5
Q.no. Module 4 Marks
4a Explain plasma arc welding with sketches. 4
Answer b or c
b Explain how the atmosphere around the workpiece affects the weld
obtained in electron-beam welding.
5
c What do you understand by weldability? 5
Q.no. Module 5 Marks
5a Explain brazing. How is brazing different from welding? 5
Answer b or c
b Explain the weld joint design for welding of plastics. 7
c What are the major discontinuities that affect the quality of a welded joint? 7
Q.no. Module 6 Marks
6a Sketch and explain the residual stresses developed in a straight butt joint. 5
Answer b or c
b How welding distortion can be controlled? 7
c Explain and illustrate elliptical and teardrop-shaped weld pools 7