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In thread rolling process, the selected blank should be of appropriate diameter.(a) True(b) FalseI had been asked this question in a job interview.The query is from Thread Rolling topic in portion Miscellaneous Forming Processes of Casting-Forming-Welding II

Answer»

The correct choice is (a) True

Best EXPLANATION: In thread rolling, it is very important that the diameter of the selected blank should be correct. If the blank is undersize then the effective diameter of the thread may formed, but the major diameter cannot be formed. And if the blank is OVERSIZE, then the EXCESS of material WOULD be forced into the rolls, which may further cause damage to the rolls.



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