1.

Temperature cannot affect the friction and lubrication present during the metal forming.(a) True(b) FalseThe question was asked during an internship interview.This is a very interesting question from Friction and Lubrication in Metal Forming in division Types of Die & Metal Forming Processes of Casting-Forming-Welding II

Answer»

The correct answer is (b) False

Explanation: Friction and lubrication in METAL FORMING are greatly influenced by parameters such as temperature, mechanical properties, surface finish, sliding velocity, PRESSURE etc. In general, the viscosity of LUBRICANT DECREASES with the increase in temperature and vice-versa. And friction becomes more vigorous when the temperature is very high during the metal forming operation.



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