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http://dx.doi.org/10.5228/KSTP.2010.19.8.480

Void Closing Conditions of Large Ingot by Path Schedules  

Choi, I.J. (인하대학교 대학원 금속공학과)
Choi, H.J. (한국생산기술연구원)
Kim, D.W. (한국생산기술연구원)
Choi, S. (한국생산기술연구원)
Lim, S.J. (한국생산기술연구원)
Publication Information
Transactions of Materials Processing / v.19, no.8, 2010 , pp. 480-485 More about this Journal
Abstract
In this work, the closing behavior of cylindrical-shaped voids was experimentally investigated according to various parameters such as reduction ratio in height, initial void size and billet rotation during hot open die forging process. The reduction ratio in height, number of path, and billet rotation were chosen as key process parameters which influence the void closing behavior including the change of void shape and size. On the other hand, values of die overlapping and die width ratio were set to be constant. Void closing behavior was estimated by microscopic observation. Based on the observations, it was confirmed that application of billet rotation is more efficient to eliminate the void with less reduction ratio in height. The experimental results obtained from this study could be helpful to establish the optimum path schedule of open die forging process.
Keywords
Hot Open Die Forging; Void Closing Behavior; Reduction Ratio in Height; Billet Rotation; Void Size;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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