轧辊尺寸对环形件冷轧中端面轴向宽展的影响规律研究  

The influence of roller sizes on the axial spread in cold rolling process of ring units

作　　者：郭吉萍[1,2] 李悦[2] 郭正华[2] 李志刚[1] 

机构地区：[1]华中科技大学材料成形与模具技术国家重点实验室,湖北武汉430074 [2]南昌航空大学材料科学与工程学院,江西南昌330063

出　　处：《模具工业》2009年第10期34-37,共4页Die & Mould Industry

摘　　要：环形件冷轧过程中,环形件发生不均匀轴向宽展变形导致端面产生鱼尾现象,影响环形件质量。采用自行开发的环形件冷轧过程弹塑性动力显式算法有限元模拟软件,对不同轧辊尺寸条件下环形件冷轧过程进行数值模拟,研究了环形件端面轴向宽展率、平均宽展和鱼尾系数随轧辊尺寸的变化规律。从模拟结果可以看出,环形件端面轴向宽展在内外侧面变形程度不一致,环形件外侧的轴向宽展远大于其内侧的宽展变形。The inhomogeneous axial spread deformation, which causes fish-tail defects, often arises on the end face and influences the quality of ring units. Some cold rolling Processes for ring units with different roller sizes were simulated by a self-developed simulation software based on elastic-plastic dynamic explicit finite element method. The change of axial percentage spread, average spread and fish-tail coefficient with the roller sizes was investigated and the simulation results show that the outside and inside axial spread magnitude of ring units is inconsistent, and the outside spread is greater than that inside.

关 键 词：环形件 冷轧 轴向宽展 轧辊尺寸 数值模拟 

分 类 号：TG335.19[金属学及工艺—金属压力加工]