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The lubricated sample shows more barrelling compared to the unlubricated sample which shows less barrelling.

The lubricated sample shows more barrelling compared to the unlubricated sample which shows less barrelling. Correct Answer False

The reverse of this statement is true, this is because the lubricated sample is free to move off the surface of die, so compression of sample is more uniform, and chances of barrelling are lowered.

Related Questions

Consider the following statements pertaining to the open die forging of a cylindrical specimen between two flat dies: 1. Lubricated specimens show more surface movement than unlubricated ones. 2. Lubricated specimens show less surface movement than unlubricated ones. 3. Lubricated specimens show more barrelling than unlubricated ones. 4. Lubricated specimens show less barrelling than unlubricated ones. Which of these statements are correct?
In case of open die forging, the relative movement of a workpiece with die is lower in lubricated sample than the unlubricated one.
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