锻压技术

热锻模具自动化电弧增材再制造工艺

英文标题：Automatic wire arc additive remanufacturing process for hot forging mold

作者：张建生肖贵乾邓长勇

单位：重庆大学

分类号：

出版年,卷(期):页码：2020,45(7):165-171

摘要：

为解决采用人工堆焊修复曲轴锻模时，精确尺寸难以控制、加工余量大造成的焊材浪费和热锻模具组织性能的稳定性差等问题，提出了采用自动化电弧增材再制造技术代替传统的人工堆焊，充分发挥了失效热锻模具作为再制造基体的低成本优势和自动化电弧增材再制造的精确性优势。首先，制定了曲轴锻模自动化电弧增材再制造的流程，进而对待修复曲轴锻模进行了三坐标扫描及后续模型处理，获得了电弧增材填充部分的目标模型，并在自主研发的路径规划软件中进行了逐层的填充轨迹规划;然后,将填充轨迹转换为机器人指令文件;最后,对失效的曲轴锻模进行了电弧增材再制造试验，验证了整套方案的可行性。

In order to solve the problems of exact dimension difficult to control, welding material waste caused by large machining allowance, poor structure and property stability of hot forging mold and so on when the crankshaft forging mold was repaired by manual welding, the automatic wire arc additive remanufacturing technology was put forward replacing the traditional manual welding, and the low-cost advantage of a failed hot forging mold as a remanufacturing matrix and the precision advantage of automatic wire arc additive remanufacturing were fully realized. First, the process of automatic wire arc additive remanufacturing for the crankshaft forging mold was formulated, and the target model of wire arc additive filling part was obtained by the three-axis scanning and subsequent model processing of crankshaft forging mold to be repaired. Then, the layer-by-layer filling path planning was generated in self-developed path planning software, and the filling path was converted into a robot command file. Finally, the automatic wire arc additive remanufacturing test was performed on the failed crankshaft forging mold to verify the feasibility of the whole scheme.

基金项目：

国家重点研发计划项目(2018YFB1106504）；重庆市技术创新与应用示范专项重点项目(cstc2018jszxcyzdX0121)

张建生(1990-),男,博士,中级工程师 E-mail：zhangjiansheng@cqu.edu.cn

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