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.
出处
《激光与光电子学进展》
CSCD
北大核心
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)
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
laser technique
additive manufacturing
selective laser melting
mould steel
conformal cooling channels
