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In general, no any lubrication is required during the process of rod or bar drawing.

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in Casting-Forming-Welding II by (119k points)
In general, no any lubrication is required during the process of rod or bar drawing.

(a) True

(b) False

This question was posed to me during an online exam.

This intriguing question originated from Rod and Tube Drawing in portion Miscellaneous Forming Processes of Casting-Forming-Welding II

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The correct choice is (b) False

Best explanation: In rod drawing process, the metallic rod is fixed into the dies by using a die holder and then a drawing head is used in which the metallic rod is fixed through a jaw mechanism. And then the bar is stretched and slides between the surfaces of the die, which causes friction and wearing. So to avoid such wearing, the rod is first lubricated before going into the process. In general, soap solution or oil is used for the lubrication in rod drawing process.

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