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In mandrel mil rolling manner and the mandrel mil null each stand which use the hole die rolling roll group and this hole
In mandrel mil rolling manner and the mandrel mil null each stand which use the hole die rolling roll group and this hole
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机译:每个使用孔模轧制辊组和该孔的机架以芯棒轧制方式和芯棒轧制为零
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摘要
PROBLEM TO BE SOLVED: To provide a grooved rolling roll group or the like by which defective entry at the fourth stand and roll slip are effectively prevented.;SOLUTION: This grooved rolling roll group is the grooved rolling roll group which is used for a mandrel mill in each stand of which a plurality of grooved rolling rolls R are arranged and the distance S2 between the center O' of curvature of the groove bottom profile of the grooved rolling roll R arranged in the second stand and the center O of the groove and the distance S4 between the center O' of curvature of the groove bottom profile of the grooved rolling roll R arranged in the fourth stand and the center O of the groove are set so as to satisfy formula (1). S20.40 S4 S20.60.;COPYRIGHT: (C)2006,JPO&NCIPI
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