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ECCENTRICITY CHANGE IN TUBE SINKING

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

Existing forms of REE in gold-bearing pyrite of the Jinshan gold deposit,Jiangxi Province, China

稀土学报(英文版) doi:10.1016/S1002-0721(08)60392-0

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