锻压技术

大型弯刀板锻件热锻成形仿真及工艺分析

英文标题：Simulation and process analysis on hot forging for large machete plate forgings

作者：冯超王荣奇高轲韩昊忱

分类号：TG316

出版年,卷(期):页码：2022,47(6):26-34

摘要：

针对大型弯刀板类锻件的高温自由锻工艺进行了研究分析，通过Deform3D软件模拟了预制不等厚板坯成形弯刀板锻件的锻造过程，分析了成形过程中不同工艺参数对弯刀板锻件成形曲率的影响。同时，将再结晶模型和损伤累积模型集成到模拟过程中，预测了锻件内部的晶粒组织演化和损伤行为。结果表明：弯刀板锻件成形后的曲率半径/板宽比会随着预制坯内外侧厚度比和终锻进砧/板厚比的增大而增大，随着终锻料宽/板厚比的增大而减小。根据模拟结果，建立了各工艺参数与成形后弯刀板锻件曲率半径之间的预估关系。该工艺有利于提高材料利用率，改善锻件内部晶粒组织，并控制损伤开裂的发生。

For the large machete plate forgings, the high\|temperature free forging process was studied and analyzed. Then, the forging process of pre\|fabricated unequal thickness billet to form machete plate forgings was simulated by Deform\|3D software, and the influences of different process parameters on forming curvature of machete plate forgings in forming process were analyzed. Meanwhile, the grain recrystallization model and damage accumulation model were integrated into the simulation process to predict the grain stucture evolution and cracking behavior inside the forgings. The results show that the ratio of curvature radius to plate width for machete plate of forgings after forming increases with increasing of thickness ratio of inner and outer sides for the preform and the ratio of final forging feed\|length to plate thickness, and decreases with increasing of the ratio of plate width to plate thickness in final forging. Based on the simulation results, the estimated relationship between each process parameter and the curvature radius of machete plate forgings after forming is established. Meanwhile, the process is beneficial to increase the utilization rate of materials, improves the grain structure inside the forgings and controls the occurrence of damage and cracking.

基金项目：

国家自然科学基金青年基金资助项目（51805204）；吉林省教育厅“十三五”科技项目（JJKH20200976KJ）

冯超(1987-)，男，博士，讲师 Email：fengchao@jlu.edu.cn

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