激光熔丝增材制造丝材过渡状态的电磁振动监测方法

doi:10.3901/JME.2018.02.034

机械工程学报 ›› 2018, Vol. 54 ›› Issue (2): 34-40.doi: 10.3901/JME.2018.02.034

• 特邀专栏:焊接过程测控与数值模拟 • 上一篇下一篇

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激光熔丝增材制造丝材过渡状态的电磁振动监测方法

黄安国, 刘博, 郑增超, 郭嘉琪, 陈一元, 庞盛永

华中科技大学材料成形与模具技术国家重点实验室武汉 430074

收稿日期:2017-08-22 修回日期:2017-11-10 出版日期:2018-01-20 发布日期:2018-01-20
通讯作者: 庞盛永(通信作者),男,1982年出生,博士,副教授,博士研究生导师。主要研究方向为材料成形模拟、材料激光加工、焊接工艺与装备。E-mail:spang@hust.edu.cn
作者简介:黄安国,男,1975年出生,博士,副教授。主要研究方向为新型材料的先进连接方法及工艺和焊缝组织行为特征及模拟。E-mail:huang-anguo@mail.hust.edu.cn
基金资助:
国家重点研发计划（2017YFE0100100）和国家自然科学基金（51675202）资助项目。

Electromagnetic Vibration Monitoring Method for Liquid Transfer Mode in Wire Feeding Based Laser Additive Manufacturing(WFLAM)

HUANG Anguo, LIU Bo, ZHENG Zengchao, GUO Jiaqi, CHEN Yiyuan, PANG Shengyong

State Key Laboratory of Material Processing and Die & Mould Technology, Huazhong University of Science & Technology, Wuhan 430074

Received:2017-08-22 Revised:2017-11-10 Online:2018-01-20 Published:2018-01-20

摘要/Abstract

摘要： 提出一种在线监测激光熔丝增材制造中微细丝材（1~2 mm）过渡状态的电磁振动监测方法，建立监测系统的数学模型并研制原型装置。通过设计试验，采用磁性以及非磁性微细丝材对监测系统的振动发生、信号采集等功能进行测试与验证，发现可获得强度显著大于环境噪声的稳定振动信号，证实了监测方法的可行性。基于该装置，开展了激光熔丝增材制造工艺中丝材过渡状态的监测试验研究。结果表明：滴状过渡时，成形中，基板接收到的振动信号低于环境噪声强度（约为-70 dB）；而液桥过渡时，可获得清晰的振动信号（强度-67~-62 dB），高于环境噪声强度。综上，采用所研制的原型装置可清晰分辨滴状过渡与液桥过渡这两种典型的丝材过渡状态，能对激光熔丝增材制造工艺的丝材过渡状态进行有效监测。

关键词: 电磁振动监测方法, 激光熔丝增材制造, 丝材过渡状态, 振动信号

Abstract: An electromagnetic vibration (EMV) method is proposed to monitor the molten drop transition form of the fusing wire (1-2 mm) during Laser Additive Manufacturing (LAM). The theoretic and mathematical model of monitoring system is established and the new prototype device is developed. Two different kinds of wire (magnetic and nonmagnetic fine welding wires) are respectively utilized to test and verify the ability of the vibration excitation and signal collection of the monitoring system. The experimental results show that the proposed EMV method is available. Based on the developed device, the relations is investigated between the molten drop transition form of fusing wire and the strength difference of the vibration excitation signal and environmental noise signal. The results show that the strength difference of the vibration excitation signal is lower than that of the environmental noise signal (about -70 dB) in droplet transition form while the former (about -67-62 dB) is stronger than the latter in liquid bridge transition. The present work is useful to monitor the molten drop transition form of fusing wire in LAM.

Key words: electromagnetic vibration monitoring method, laser fuse additive manufacturing, vibration signal, wire transfer mode

中图分类号:

TB54

黄安国, 刘博, 郑增超, 郭嘉琪, 陈一元, 庞盛永. 激光熔丝增材制造丝材过渡状态的电磁振动监测方法[J]. 机械工程学报, 2018, 54(2): 34-40.

HUANG Anguo, LIU Bo, ZHENG Zengchao, GUO Jiaqi, CHEN Yiyuan, PANG Shengyong. Electromagnetic Vibration Monitoring Method for Liquid Transfer Mode in Wire Feeding Based Laser Additive Manufacturing(WFLAM)[J]. Journal of Mechanical Engineering, 2018, 54(2): 34-40.

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激光熔丝增材制造丝材过渡状态的电磁振动监测方法

Electromagnetic Vibration Monitoring Method for Liquid Transfer Mode in Wire Feeding Based Laser Additive Manufacturing(WFLAM)

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