激光与光电子学进展, 2020, 57 (5): 050003, 网络出版: 2020-03-05
激光增材制造温度场检测分析与控制综述 下载: 1609次
Review of Detection, Analysis and Control of Temperature Field in Laser Additive Manufacturing
摘要
激光金属增材制造通过金属材料快速熔化、凝固并逐层堆积的方式实现金属零件的近净成形。成形过程中温度梯度大,在零件内产生热应力和热变形,导致冶金缺陷以及显微组织性能退化,因此温度场检测、分析与控制一直是金属增材制造的关键问题。为此,综述了国内外增材制造温度场的有限元仿真分析,基于红外热像仪和高温计等仪器的成形表面、熔池温度在线检测分析,成形温度闭环控制与基板预热控制等方面的研究进展,比较了现有的增材制造温度场检测、分析与控制技术的优缺点,并分析了未来的发展趋势。
Abstract
Laser metal additive manufacturing, which is referred to a near-net-shaping process, builds metal parts by rapid melting, solidification and layer-wise cladding. The large temperature gradient in laser additive manufacturing process causes the thermal stress, thermal deformation, metallurgical defects and microstructure degradation of the part; therefore, the detection, analysis and control of the temperature fields are always the key problems of metal additive manufacturing. The review is presented of detection, analysis and control technologies of the temperature fields in additive manufacturing at home and abroad, including the finite element simulation, the in-process detection based on the infrared camera and pyrometer, the closed-loop control and the substrate preheating control. The advantages and disadvantages of the present techniques of detection, analysis and control of the temperature fields are compared, and the future trend is analyzed.
解瑞东, 朱尽伟, 张航, 崔滨, 张连重, 李涤尘, 高峰. 激光增材制造温度场检测分析与控制综述[J]. 激光与光电子学进展, 2020, 57(5): 050003. Ruidong Xie, Jinwei Zhu, Hang Zhang, Bin Cui, Lianzhong Zhang, Dichen Li, Feng Gao. Review of Detection, Analysis and Control of Temperature Field in Laser Additive Manufacturing[J]. Laser & Optoelectronics Progress, 2020, 57(5): 050003.