激光选区熔化成形模具钢的发展现状及前景  

Development Status and Prospect of Selective Laser Melting of Mould Steels

作　　者：文世峰[1] 季宪泰 周燕[1,2] 魏青松 

机构地区：[1]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 [2]武汉工程大学机电工程学院,湖北武汉430205

出　　处：《激光与光电子学进展》2018年第1期41-51,共11页Laser & Optoelectronics Progress

基　　金：国家863计划(2015AA042501);国家自然科学基金(51605176;51375189);湖北省科技支撑计划(2014BAA017)

摘　　要：激光选区熔化(SLM)能够实现由粉末到零件的自由制造,成形件尺寸精度高、表面粗糙度低,特别适合具有复杂结构的模具的成形。重点介绍了SLM成形模具钢的研究现状、成形材料、工艺特点、组织演变和性能优化等,并简要介绍了其应用现状,如随形冷却流道的应用案例等。总结了现阶段SLM成形模具钢存在的问题,并对其未来的研究方向进行了展望与探讨。The free manufacture from powders to parts can be realized by the technique of selective laser melting （SLM）, and the formed parts have a high size accuracy and a low surface roughness. SLM is especially suitable for the formation of the moulds with complex structures. The research status of SLM and forming of mould steels as well as their molding materials, process characteristics, microstructure evolution and performance optimization are mainly summarized. The application status such as the application of conformal cooling channels is briefly described. The existing problems in the SLM and forming of mould steels are summarized and the future research direction is prospected and discussed.

关 键 词：激光技术 增材制造 激光选区熔化 模具钢 随形冷却流道 

分 类 号：TG142.45[一般工业技术—材料科学与工程]