锻件工艺凸台增材工艺设计合理性评价模型  

Evaluation model on design reasonability for additive manufacturing process of forgings with process boss

作　　者：王梦寒[1] 李松林 胡亚飞 王承 Wang Menghan;Li Songlin;Hu Yafei;Wang Cheng(School of Material Science and Engineering,Chongqing University,Chongqing 400044,China;Erzhong(Deyang)Heavy Equipment Co.,Ltd.,Deyang 618013,China)

机构地区：[1]重庆大学材料科学与工程学院,重庆400044 [2]二重(德阳)重型装备有限公司铸锻公司,四川德阳618013

出　　处：《锻压技术》2021年第10期12-18,共7页Forging & Stamping Technology

基　　金：国家重点研发计划(2018YFB1106500)。

摘　　要：为了判断增材工艺凸台在滑轨预锻件内所产生的熔池及热影响区能否通过终锻锻出基体零件,对滑轨增材件进行终锻模拟,研究了滑轨终锻件上工艺凸台与基体结合面处的材料流动,确定了增材时滑轨基体上允许产生的最大熔池及热影响区范围,建立了能够有效地判断锻造增材工艺中基体形貌、增材形貌及工艺参数设计合理性的分界面模型。利用分界面模型对增材工艺凸台1、2进行分析,结果表明:增材工艺凸台1处形貌设计合理,但增材工艺凸台2处形貌设计需要进一步优化。分界面模型中心区域相对误差较小,但边界处容易失真,通过增大分界面模型面积或增大边界处点密度能够有效地减小测量区域的相对误差。In order to determine whether the molten pool and heat-affected zone(HAZ)generated by the addictive manufacturing process boss in the pre-forgings of slide rail was forged out of the base part through the final forging,the final forging simulation of the additive manufacturing part for slide rail was conducted to study the material flow at the combination surface between process boss and substrate in the slide rail final forgings,determined the maximum allowable molten pool and the range of HAZ on the slide rail substrate in addictive manufacturing process,and established an interface model that effectively judged the design rationality of substrate morphology,additive morphology and process parameters in forging addictive manufacturing process.Using the interface model to analyze the addictive manufacturing process boss 1 and 2,the results show that the morphology design of the additive manufacturing process boss 1 is reasonable,but the morphology design of the additive manufacturing process boss 2 requires further optimization.However,the relative error in the center area of the interface model is small,but it is easy to be distorted at the boundary.Thus,the relative error of the measurement area is effectively reduced by increasing the area of the interface model or increasing the point density at the boundary.

关 键 词：锻造增材工艺 工艺凸台 分界面模型 成形形貌 滑轨 

分 类 号：TG316[金属学及工艺—金属压力加工] TG47