论空拔均壁作用的条件性  

CONDITIONALITY OF WALL-UNIFORM IN EMPTY SINKING

作　　者：张才安[1] 王龙[1] 杨方敏 谢宏 张燎原 

机构地区：[1]重庆大学 [2]重钢三厂

出　　处：《钢管》1989年第1期45-48,共4页Steel Pipe

摘　　要：本文研究了空拔均壁作用的条件性。研究结果表明,空拔的均壁作用是有条件的。空拔后钢管的弯曲度越大,均壁作用越小,甚至加剧壁厚不均。The conditionality of wall-uniform effect in empty sinking was studied and the result shows that the effect of wall-unlform in empty sinking must be on some conditions. The greater the tube-flexure after drawing is, the worse the wall-uniform effect and even the non-uniformity of wall thickness is aggravated.

关 键 词：条件性 弯曲度 壁厚不均 中心线 垂直力 半模 自动轧管机 变形区 模孔 后凸 

分 类 号：TG335.7[金属学及工艺—金属压力加工] TG356.5