锻压技术

TBM滚刀刀圈模锻成形仿真参数优化

英文标题：Optimization on simulation parameters for TBM disc cutter ring in die forging

作者：麻成标

分类号：TG316

出版年,卷(期):页码：2019,44(7):7-14

摘要：

为了研究盘形滚刀刀圈模锻成形特点，提高其成形质量，通过数值模拟方法，基于Deform建立了刀圈模锻成形过程的有限元分析模型，研究了始锻温度、锻造速度和摩擦因子对刀圈成形质量的影响；基于田口方法，对上述成形工艺参数进行了多目标优化，并对其进行了实验验证。结果表明：始锻温度对成形性能影响最大，且始锻温度和锻造速度之间存在交互作用，刀圈模锻成形的最佳参数组合为：始锻温度1150 ℃、锻造速度25 mm·s-1、摩擦因子0.15。优化后工艺条件下的刀圈模锻成形质量检测结果表明，刀圈成形尺寸与模拟结果一致，截面硬度分布均匀，其值为54~56 HRC，刃部和芯部的冲击韧性平均值分别为3.58和15.75 J·cm-2，满足刀圈使用要求。

In order to study the die forging characteristics and improve the forming quality of disc cutter ring, a finite element analysis model for the die forging process of disc cutter ring was established based on Deform by numerical simulation, and the influences of initial forging temperature, forging speed and friction factor on the forming quality of cutter ring were studied. Then, the multi-objective optimization of the above forming parameters was carried out based on Taguchi method, and the experimental verification was conducted. The results show that the initial forging temperature has the greatest influence on the forming performance, and there is an interaction between the initial forging temperature and the forging speed. Thus the optimum combination of die forging parameters is the initial forging temperature of 1150 ℃, the forging speed of 25 mm·s-1 and the friction factor of 0.15. The detection results of die forging forming quality for cutter ring in the optimized process conditions show that the forming dimensions of cutter ring is consistent with the simulation results, the hardness distribution of cross section is uniform, and its values are 54-56 HRC. Furthermore, the average values of impact toughness in edge and core are 3.58 and 15.75 J·cm-2, respectively, which meet the requirements of cutter ring.

基金项目：

湖南省战略性新兴产业科技攻关项目(2015GK1029)

麻成标（1969-），男，学士，高级工程师，E-mail：395056341@qq.com

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