激光立体成形熔道截面形貌尺寸影响因素研究  

Research on the Influencing Factors the Cross-sectional Shape and Size of Laser Solid Forming Melting Channel

作　　者：王军华 许俊飞 路妍[2] 韩福柱[3] 彭建军[1] 颉潭成[1,4] WANG Junhua;XU Junfei;LU Yan;HAN Fuzhu;PENG Jianjun;XIE Tancheng(School of Mechanical and Electrical Engineering,He'nan University of Science and Technology,Luoyang 471003,China;Materials Science and Engineering School,He'nan University of Science and Technology,Luoyang 450045,China;Department of Mechanical Engineering,Tsinghua University,Beijing 100086,China;He'nan Intelligent Manufacturing Equipment Engineering Technology Research Center,Luoyang 471003,China)

机构地区：[1]河南科技大学机电工程学院,河南洛阳471003 [2]河南科技大学材料科学与工程学院,河南洛阳450045 [3]清华大学机械工程系,北京100086 [4]河南省智能制造装备工程技术研究中心,河南洛阳471003

出　　处：《电加工与模具》2023年第3期47-53,共7页Electromachining & Mould

基　　金：河南省科技攻关项目(222102220073);河南省科技研发计划联合基金项目(222103810039,222103810030);河南省高等学校重点科研项目(22A460014,20A460012)。

摘　　要：为实现复杂结构金属零件高精度制造成形,系统研究了激光立体成形各工艺参数对熔道截面形貌尺寸的影响规律。结果表明,激光立体成形熔道形貌尺寸与工艺参数有重要关系。沉积层截面面积、高度和宽度随着激光功率、送粉速率和基板温度的增大而增大,随着扫描速度的增大而减小,随着离焦量的增大呈现先增大后减少的趋势;重熔层截面面积、高度和宽度随着激光功率和基板温度的增大而增大,与扫描速度、送粉速率和离焦量等因素关系不大。In order to achieve high-precision manufacturing of complex structural metal parts,the influence of various process parameters on the cross-sectional shape and size of the melting channel in laser solid forming was systematically studied.The result showed that there is an important relationship between the shape and size of the laser solid forming melting channel and the process parameters.The cross-sectional area,height and width of the deposition layer increase with the increase of laser power,powder feeding rate and substrate temperature,and decrease with the increase of scanning speed,and show a trend of first increasing and then decreasing with the increase of defocusing amount.The cross-sectional area,height and width of the remelted layer increase with the increase of laser power and substrate temperature,but change imsignificantly with factors such as scanning speed,powder feeding rate and defocusing amount.

关 键 词：激光立体成形 形貌尺寸 沉积层 重熔层 基板 

分 类 号：TG665[金属学及工艺—金属切削加工及机床]