1.

In thread rolling, the chamfer diameter should be greater than the core diameter of the thread.(a) True(b) FalseThis question was addressed to me in an interview for internship.This key question is from Thread Rolling in portion Miscellaneous Forming Processes of Casting-Forming-Welding II

Answer»

The correct OPTION is (b) False

Explanation: In general, the selected blank should be STRAIGHT and possess better SURFACE finish for the process of THREAD rolling. In this process, a chamfer is used which GENERALLY present at the start of the blank and also at the end when the thread is to end at an undercut. The selected chamfer diameter should be slightly less than the core diameter of the thread for taking place of efficient operation.



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