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YAO Ruohao ZHONG Jianhua HUANG Jianfang ZHANG Ruhua South Institute of Metallurgy , Ganzhou , Jiangxi , China
金属学报(英文版)
The rectification of eccentricity was revealed to be more effective in tube sinking than drawing with a mandrel.The ratio of thickness to diameter of tube blank on both sides of thick and thin wall seems to be the principal influential factor in rectifying eccentricity.The greater the ini- tial outside diameter and the initial wall thickness difference are and the less the initial wall thickness of the tube blank is,the better the rectification is.
关键词: sinking tube , null , null
姚若浩 , 钟建华 , 黄建芳 , 张如华
金属学报
研究了管材空拉时偏心变化的规律。结果表明:空拉比衬拉的纠偏效果更强;影响空拉纠偏效果的基本因素是管坯厚壁与薄壁侧的厚径比S_(?1)/D_H及S_(H2)/D_H;管坯原始外径D_H、原始壁厚偏差(S_(H1)—S_(H2))越大以及原始壁厚值(S_(?1)+S_(?2))越小,则其纠偏效果越好。
关键词: 空拉管 , eccentricity , rectifying , null
