锻压技术

矩形截面件径向锻造工艺优化

英文标题：Optimization on radial forging process of rectangular cross-section billet

作者：徐方董湘怀王新宝李正东刘强

分类号：TG316.8

出版年,卷(期):页码：2019,44(4):1-9

摘要：

对于矩形截面件径向锻造问题，目前尚没有相应的锻造载荷、锻造功率和锻件质量相关的计算模型，以及工艺规划的标准。根据径向锻造变形特点，将平面变形条件下锻造载荷公式推广到矩形截面件锻造载荷计算，将预测圆截面件径向锻造锻透率的三角形法则推广到矩形截面件并进行了修正，提出一种锻造功率计算模型，计算误差都在10%左右。然后采用多目标加权的方法，将锻造效率、锻件质量和锻造载荷模型转化成单一的优化目标函数，对道次、压下率和送进率等工艺参数进行优化；同时，采用4个工艺实例验证了工艺优化算法的优化和评估能力，并最终将工艺优化算法写入软件，应用到径向锻造自动化生产过程。

For the problem of radial forging of rectangular cross-section billet, there are no corresponding calculation models to evaluate forging load, forging power and quality of forgings at present, as well as the standards about forging process planning. According to the deforming characteristic of radial forging, the forging load formula in the plane deformation condition was applied to calculating the forging load of rectangular cross-section billet, and the triangle rule to assess the forging permeability of radial forging for circular cross-section billet was applied to the rectangular cross-section billet and was modified. Then, a calculating model of forging power was presented, and the calculating deviation is generally about 10%. Furthermore, the models of forging efficiency, quality of forgings and forging load were transformed into a single optimization objective function by multi-objective weighting method, and the process parameters such as pass, reduction rate and feeding rate were optimized. At the same time, four process instances were adopted to verify the optimization and evaluation ability of the process optimization algorithm, finally the process optimization algorithm was written into the software and applied to the automatic production process of radial forging.

基金项目：

国家自然科学基金资助项目（51775335）

徐方（1992-），男，硕士研究生 E-mail：xf119024130@sjtu.edu.cn 通讯作者：董湘怀（1955-），男，博士，教授 E-mail：dongxh@sjtu.edu.cn

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