Inconel 718高温合金单层多道激光熔覆成形工艺优化  

Optimization of Inconel 718 high temperature alloy single layer multi-pass laser cladding forming process

作　　者：王聪 陈建刚[1,2] 彭彦龙 李建刚[1] 柳召 WANG Cong;CHEN Jian-gang;PENG Yan-long;LI Jian-gang;LIU Zhao(School of Mechanical Engineering,Shaanxi University of Technology,Hanzhong 723000,China;School of Mechanical Engineering,Xi’an Jiaotong University,Xi’an 710049,China)

机构地区：[1]陕西理工大学机械工程学院,陕西汉中723000 [2]西安交通大学机械工程学院,陕西西安710049

出　　处：《陕西理工大学学报（自然科学版）》2023年第1期1-9,共9页Journal of Shaanxi University of Technology:Natural Science Edition

基　　金：国家自然科学青年基金项目(51505268);陕西省教育厅重点科学研究计划项目(20JS020)。

摘　　要：为提高镍基高温合金激光熔覆成形质量,采用正交试验法,分析Inconel 718高温合金在不同工艺参数(激光功率、扫描速度、送粉速率和搭接率)下,单层多道激光熔覆表面平整度和熔覆宽度的变化规律。结合综合评分法,得到成形质量最佳工艺条件为激光功率2100 W,扫描速度19 mm/s,送粉速率2 r/min,搭接率30%;其中,搭接率对熔覆层表面平整度和熔覆宽度的影响最大,送粉速率对表面平整度影响最小,激光功率对熔覆层宽度影响最小。In order to improve the quality of nickel based high temperature alloy laser clad forming, orthogonal test method was used to analyze the variation of surface flatness and clad width of single-layer multi-pass laser cladding of Inconel 718 high temperature alloy under different process parameters(laser power, scanning speed, powder feeding rate and lap rate). The optimum process conditions for the forming quality were obtained by combining the integrated scoring method, including laser power of 2100 W, scanning speed of 19 mm/s, powder feeding rate of 2 r/min, and lap rate of 30%;among which, the lap rate had the greatest influence on the surface flatness and weld width of the welded layer, the powder feeding rate had the least influence on the surface flatness, and the laser power had the least influence on the weld width.

关 键 词：Inconel 718高温合金 激光熔覆 单层多道 正交试验法 成形质量 

分 类 号：TG176[金属学及工艺—金属表面处理] TG665[金属学及工艺—金属学]