1.

Additives can be added in a lubricant to enhance its performance during metal forming operations.(a) True(b) FalseThe question was asked in an interview.Enquiry is from Friction and Lubrication in Metal Forming in section Types of Die & Metal Forming Processes of Casting-Forming-Welding II

Answer»

Right answer is (a) True

Explanation: In METAL forming process, several types of ADDITIVES are mixed with lubricant to enhance the performance of the lubricant. The EXTREME pressure (EP) additives are generally USED in heavy work metal operations. The temperature dependent EP additives, such as chlorine, phosphorus, and SULPHUR are mainly used to create chemical films that prevent metal to metal contact during forming operations.



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