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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 instability phenomenon occurred in the process of 16-type yoke roll forging process, the causes of instability were analyzed in combination with the actual situation in the production stage of roll section, and the idea of using the anti-destabilizing groove to improve the stability of blank deformation was proposed and applied On the roll forging die. The numerical simulation of Qform software was used to find out the influence law of the error of feed twist angle on the stability. Comparing the simulation results with and without buckling tank, it was found that adding the anti-destabilizing tank can effectively reduce the small-angle feeding Occurrence of billet instability due to error in roll forging process of long shaft type forging. The test results of 16-type yoke roll forging process show that the increase of anti-destabilizing groove can effectively solve the instability phenomenon during the roll forging process.