大压下率对连轧驱动等通道转角大应变技术的影响  

Effect of High Rolling Reduction Ratio on Continuous Rolling-driven Equal-channel Angular Large Strain Technology

作　　者：陆文俊[1] 许晓静[1] 卢予东[1] 费震旦[1] 蒋凌[1] 

机构地区：[1]江苏大学先进制造与现代装备技术工程研究院,江苏镇江212013

出　　处：《热加工工艺》2013年第15期1-4,共4页Hot Working Technology

基　　金：国家自然科学基金资助项目(51074079)

摘　　要：采用有限元软件DEFORM-3D模拟了连轧驱动等通道转角大应变技术,研究了大轧制压下对大应变技术的影响。结果表明,当摩擦系数低(0.12)时,工件与轧制轮之间出现打滑现象,在转角变形区出现沿弯曲通道向上位置的镦宽现象;在摩擦系数过高(0.5～0.7)时,进入弯曲通道,出现明显的轧宽现象,在出口通道处,工件出现破损现象;在摩擦系数适中(0.3)时,工件变形流畅,工件在出口通道内未填满通道宽度。随着轧制压下率增大,有效应变增大,但能耗增加。The continuous rolling-driven equal-channel angular large strain technology was simulated by using FE DEFORM-3D soitware.The effect of high rolling reduction on large strain technology was studied. The results indicate that, when the friction coefficient is low （0.12）, slipping phenomenon appears between workpiece and roller; and the width of work piece increases along the curved channel ~om the comer; when the fiiction coefficient is too high （0.5 to 0.7）, the work piece widens in curved channel and breaks at the exit; when the friction coefficient is moderate （0.3）, the work piece deforms smoothly and do not fill the width of the exit channel. With the rolling reduction ratio increasing, the effective strain increases, but the energy consumption increases.

关 键 词：轧制驱动 大应变技术 大压下率 有限元模拟 

分 类 号：TG335.13[金属学及工艺—金属压力加工]