锻压技术

板体锻造工艺优化及试验验证

英文标题：Optimization on plate body forging process and experimental verification

关键词：板体镦粗模具磨损等效应力余料仓

分类号：TG316

出版年,卷(期):页码：2022,47(10):36-41

摘要：

优化了板体的锻造工艺，将锻造工艺中的平面镦粗去氧化皮工步优化为成形镦粗，将原镦粗的扁平形状改为中间低两边高的形状，以达到更合理的材料分配。通过优化成形镦粗的形状和高度，将终锻模具的最大等效应力降低了30%左右，终锻模具易磨损位置的磨损量降低了25%左右，达到了提高终锻模具寿命的目的。同时，优化了顶杆的安装位置，在顶杆位置处增加余料仓，增加材料的流动空间，降低顶杆受力，可以有效提高顶杆寿命。试验发现，成形镦粗件的长度对终锻成形的影响不容忽视，成形镦粗件长度应小于锻件长度，否则容易产生折叠缺陷。将试生产锻件与模拟结果对比，可以确认优化后的成形镦粗工步和顶杆余料仓的作用是有效的。

The forging process of plate body was optimized, the plane upsetting and descaling step in the forging process was optimized to forming upsetting, and the flat shape of the original upsetting was changed to a shape with a lower middle and higher sides to achieve a more reasonable material distribution. Then, by optimizing the shape and height of forming upsetting, the maximum equivalent stress of the final forging mold was reduced by about 30%, and the wear amount of the easy-wear position in the final forging mold was reduced by about 25%, achieving the purpose of improving the final forging mold life. At the same time, the installation position of upper eject rod was optimized, and the residual bin was added at the position of eject rod to increase the material flow space and reduce the force of eject rod, which effectively improved the life of eject rod. Experiments show that the influence of the length of formed upsetting parts on the final forging cannot be ignored, and the length of formed upsetting parts should be less than the length of forgings, otherwise it is easy to folding. Comparing the trial production forgings with the simulation results, it can be confirmed that the optimized forming upsetting step and the eject rod residual bin are effective.

基金项目：

闫红艳（1979-），女，硕士，正高级工程师，E-mail：yanhongyan2013@126.com

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