6/7/2015 DownloadJNTU(OR)M.TECH1SemesterADVANCEDMETALFORMINGJanuary/February2007ExamQuestionPaper|IndianShout

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Code No: OR12/AMSM.Tech. ISemester Examinations, January

/ February2007.ADVANCED METAL FORMING

Advanced Manufacturing SystemsTime: 3 hours Max. Marks: 60

Answer any FIVE questionsAll questions carry equal marks

1.a Explain the significance ofrecrystalliztion temperature in metalworking.b Why is hot working some times preferredto cold working inspite ofsome disadvantages?

2.a Briefly explain the principle of rollingwith a neat sketch.b Explain the meaning of draught and elongation as related to hotrolling.

3.a What is meant by flash in a forging? Explain with the help of asketch.b Enumerate the differences betweeni Open die forging and closed die forgingii drop forging and press forging.

4.a Draw the cross section of a drawing die labeling various features ofit.b What are the various materials used for making wire drawing dies?Explain their applications.

5.a Explain with simple sketches, the process of forward andbackward extrusion.b Explain how the various variables effect the extrusion pressure.

6.a Draw a sketch of a punch and a die set used for punchingoperation. Indicate its various parts.b Explain the following terms:i Coining ii Embossing iii Trimming

7.a Explain the advantages and disadvantages of compound dies overprogressive.b Explain the basic principles to be followed in the strip developmentfor shearing dies.

8.a Describe six point location principle in jig and fixture design.b With the help of neat sketch, explain electromagnetic formingprocess.

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