金属熔融直写成形工艺射流沉积稳定性分析

doi:10.3901/JME.2024.01.119

机械工程学报 ›› 2024, Vol. 60 ›› Issue (1): 119-126.doi: 10.3901/JME.2024.01.119

• 特邀专栏：高性能制造专栏 • 上一篇下一篇

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金属熔融直写成形工艺射流沉积稳定性分析

戎文娟^1,2, 单忠德^2,3, 王宝雨¹, 王佳琳², 王永威²

1. 北京科技大学机械工程学院北京 100083;
2. 中国机械科学研究总院先进成形技术与装备全国重点实验室北京 100083;
3. 南京航空航天大学机电学院南京 210016

收稿日期:2023-03-16 修回日期:2023-09-12 发布日期:2024-03-15
作者简介:戎文娟，女，1979年出生，研究员。主要研究方向为先进制造技术。E-mail：rwj918@126.com
单忠德(通信作者)，男，1970年出生，中国工程院院士，博士研究生导师。主要研究方向为绿色制造技术与装备。E-mail：shanzd@cam.com.cn
王宝雨，男，1964年出生，研究员，博士研究生导师。主要研究方向为机械设计及理论。E-mail：bywang@ustb.edu.cn
基金资助:
国家重点研发计划资助项目(2020YFF0217700)。

Stability Analysis of Jet Deposition in Metal Melt Direct Writing Process

RONG Wenjuan^1,2, SHAN Zhongde^2,3, WANG Baoyu¹, WANG Jialin², WANG Yongwei²

1. School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083;
2. State Key Laboratory of Advanced Forming Technology and Equipment, China Academy of Machinery Science and Technology, Beijing 100083;
3. College of Mechanical & Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016

Received:2023-03-16 Revised:2023-09-12 Published:2024-03-15

摘要/Abstract

摘要： 金属材料增材制造具有工艺流程短、柔性可设计等优点，可满足复杂结构件单件小批量个性化需求，在众多金属增材制造工艺方法中，金属熔融直写成形具有成本低、效率高等优势。射流稳定性是影响金属熔融直写成形质量和精度的关键因素。针对直写成形射流特点，分类建立了液滴流、曲张流、平滑流、波动流4种典型射流状态模型，模拟并分析了射流的演化过程，获得了修正后的金属射流连续段长度公式，以及射流沉积稳定性调控的关键因素；基于金属射流单道沉积工艺试验，获得了不同射流状态沉积后轨迹均匀性的基板速度调控范围。射流状态模型建立和沉积轨迹均匀性调控范围的获取，为金属熔融直写工艺形性调控提供理论依据。

关键词: 金属增材制造, 金属熔融直写成形, 金属射流, 射流稳定性

Abstract: Metal material additive manufacturing has the advantages of a short process and flexible design, which can meet the individual needs of complex structural parts in small batches. Compared with other metal additive manufacturing processes，molten-metal-direct writing (MMDW) has the advantages of low equipment cost and high efficiency. The stability of jet is the key influence factor of MMDW forming quality and accuracy. Four state models of jet flow: droplet flow, curved flow, smooth flow, and fluctuating flow, have been established. The numerical simulation method is used to study the morphological evolution process in the jet process. A revised equation of jet continuous length is obtained. The causes and development laws of jets in different states are revealed. The single track writing process experiments are carried out, and the ranges of substrate velocity under different jet states for uniform track writing are obtained. A reference basis for precise control of shape and performance of MMDW process has been provided.

Key words: metal additive manufacturing, molten-metal-direct writing forming, metal jet, jet stability

中图分类号:

TG156

戎文娟, 单忠德, 王宝雨, 王佳琳, 王永威. 金属熔融直写成形工艺射流沉积稳定性分析[J]. 机械工程学报, 2024, 60(1): 119-126.

RONG Wenjuan, SHAN Zhongde, WANG Baoyu, WANG Jialin, WANG Yongwei. Stability Analysis of Jet Deposition in Metal Melt Direct Writing Process[J]. Journal of Mechanical Engineering, 2024, 60(1): 119-126.

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金属熔融直写成形工艺射流沉积稳定性分析

Stability Analysis of Jet Deposition in Metal Melt Direct Writing Process

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