锻压技术

防失稳槽结构在长弧线辊锻模中的应用及效果

英文标题：Application and effect of anti-destabilization groove in the long arc roll forging dies

作者：杨光蒋鹏杨勇贺小毛

单位：北京机电研究所

关键词：16型钩尾框辊锻防失稳槽数值模拟

分类号：TG316

出版年,卷(期):页码：2015,40(6):1-5

摘要：

为了解决16型钩尾框辊锻工艺试验中出现的失稳现象，结合辊段生产现场实际情况，分析产生失稳的原因，提出了采用防失稳槽提高坯料变形稳定性的设想，并应用在辊锻模具上。采用Qform软件进行数值模拟分析，找出了送料扭转角度误差值对稳定性的影响规律；并将有无失稳槽的模拟结果进行对比后发现，增加防失稳槽可以有效地减少小角度送料误差对长轴类辊锻件辊锻过程的坯料扭转失稳现象的发生。16型钩尾框辊锻成形工艺试验结果表明，增加防失稳槽可以有效地解决在辊锻过程中的失稳现象。

In order to solve the unstable phenomenon that occurred in the roll forging of 16 coupler yoke, the reasons of issue were analyzed by combining the producing situation, and the idea that improved deformation stability with anti-destabilization groove was put forward and was applied to the roll forging die. The numerical simulation analysis was carried out by QForm, and the influences of torsion angle error of the feed billet on stability were found. Comparing the simulation results of roll forging processes with and without anti-destabilization groove, it is showed that the anti-destabilization groove can effectively reduce torsional instability in roll forging which was caused by small feeding angle error in long axial roll forging. The roll forging process test of 16 coupler yoke was carried out, and the result demonstrates that the anti-destabilization groove can effectively solve the unstable phenomenon in the roll forging process of 16 coupler yoke.

基金项目：

华中科技大学材料成形与模具技术国家重点实验室开放基金项目（P2014-01）

杨光（1988－），男，硕士研究生

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