Effect of Rolling Conditions on Ductile Fracture During Piercing
(Room 309)
07 May 19
10:30 AM
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11:00 AM
One of the issues in manufacturing seamless steel pipes is the prevention of inner surface defects. It is well known that this is caused by the Mannesmann effect. Therefore, techniques to prevent ductile fracture caused by Mannesmann effect have been investigated. In this report, it is shown that the effect of the plug position, which is one of the rolling conditions on the reduction of fracture, is obtained by numerical analysis. As a result, it was found that defects could be reduced under the low reduction condition with the plug located at the advanced position.