S136模具钢粉末选区激光熔化成形工艺窗口试验研究  

Test study on forming technique window of selective laser melting S136 die steel

作　　者：朱学超[1] 魏青松[2] 孙春华[1] ZHU Xuechao;WEI Qingsong;SUN Chunhua(Dept.of Mechanic ＆ Electronic Engineering,Suzhou Vocational University,Suzhou 215104,CHN;State Key Laboratory of Material Processing and Die ＆ Mould Technology,Huazhong University of Science and Technology,Wuhan 430074,CHN)

机构地区：[1]苏州市职业大学机电工程学院,江苏苏州215104 [2]华中科技大学材料成形与模具技术国家重点实验室,湖北武汉430074

出　　处：《制造技术与机床》2018年第7期110-113,共4页Manufacturing Technology & Machine Tool

基　　金：国家科技支撑计划项目(2012BAF08B03)

摘　　要：利用选区激光熔化(SLM)技术对S136模具钢粉末进行不同激光功率和扫描速度组合下的单道扫描试验,分析归类了熔道形貌特征,研究了熔道宽度的成型稳定度下最优工艺窗口,研究了激光功率和扫描速度对熔道宽度的影响规律,分析了较优工艺参数组合下熔道形貌特征产生的原因。Single pass scanning test on S136 die steel is firstly done under the combination of laser power and scanning speed with selective laser melting（ SLM） technology.The melting path morphology is then analyzed and classified.The optimum technique window is studied under the forming stability of the width of the melting pass.And the influence rule of laser power and scanning speed on the width of melting pass is researched.Finally,the forming reason for the melting path morphology under the optimum combination of technique parameters is analyzed.

关 键 词：选区激光熔化 熔道形貌特征 工艺窗口 熔道宽度 

分 类 号：TN249[电子电信—物理电子学]