排列角度对高氮钢双丝GMAW熔滴过渡行为及成形特性的影响

doi:10.3901/JME.2024.16.171

机械工程学报 ›› 2024, Vol. 60 ›› Issue (16): 171-179.doi: 10.3901/JME.2024.16.171

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排列角度对高氮钢双丝GMAW熔滴过渡行为及成形特性的影响

杨东青, 谢高齐, 郭顺, 彭勇, 王克鸿, 黄俊

南京理工大学受控电弧智能增材技术工业和信息化部重点实验室南京 210094

收稿日期:2023-09-21 修回日期:2024-02-20 出版日期:2024-08-20 发布日期:2024-10-21
作者简介:杨东青,男,1990年出生,博士,副教授,硕士研究生导师。主要研究方向为电弧增材制造。E-mail:yangdq@njust.edu.cn
郭顺(通信作者),男,1990年出生,博士,讲师。主要研究方向为高能束焊接/增材制造,异种金属焊接,多维异构件表征及强韧化。E-mail:guos09@njust.edu.cn
基金资助:
航空科学基金(ASFC-20230011059001)和国家自然科学基金(52105367)资助项目。

Effect of Alignment Angle on Droplet Transition Behavior and Forming Characteristics of GMAW-based Double Wire for High Nitrogen Steel

YANG Dongqing, XIE Gaoqi, GUO Shun, PENG Yong, WANG Kehong, HUANG Jun

Key Laboratory of Controlled Arc Intelligent Additive Technology, Ministry of Industry and Information Technology, Nanjing University of Science and Technology, Nanjing 210094

Received:2023-09-21 Revised:2024-02-20 Online:2024-08-20 Published:2024-10-21

摘要/Abstract

摘要： 为了实现高效稳定的高氮钢熔化极气体保护焊接(Gas metal arc welding，GMAW)，着重研究双丝排列角度对高氮钢熔滴过渡行为、电信号特征及焊缝成形特性的影响。结果表明：随着双丝排列角的减小，熔池的铺展性变差，熔池重叠部分的高度增加，熔滴过渡的不稳定性增加；当排列角度不小于45°，熔池铺展性好，双丝的熔滴过渡相互作用影响减小。双丝焊接电流和电弧电压的峰值随排列角度的增加由相互重叠变为错峰出现，双丝熔滴过渡平稳；单丝焊接相比，双丝焊接在送丝总量相同条件下双丝飞溅小、成形更好。在双丝共熔池条件下，随着排列角度的增大，焊缝成形变好。

关键词: 高氮钢, 熔化极气体保护焊接, 双丝, 排列角度, 熔滴过渡, 成形特性

Abstract: In order to achieve efficient and reliable gas metal arc welding(GMAW) of high-nitrogen steels, the effects of double-wire angle on the droplet transfer behavior, electrical signal characteristics and formation characteristics of high-nitrogen steels is investigated. The results showed that as the double-wire alignment angle decreased, the spreading of the melt pool became worse, the height of the overlapping part of the melt pool increased, and the instability of the droplet transfer increased. When the alignment angle is≥45°, the melt pool spreads smoothly and the effects of droplet transition interactions of the double wires are reduced. The peaks of the welding current and voltage of the dual-wire welding with the increase of the arrangement angle from overlapping to alternation, double-wire melting droplet transfer is desirable. Compared with single wire welding, double-wire welding has less spatter and better formation under the same total wire feeding amount. Moreover, due to the double-wire mutual melting pool, the weld formation is more satisfactory as the double-wire arrangement angle increased.

Key words: high nitrogen steel, GMAW, double wire, arrangement angle, droplet transition, forming characteristics

中图分类号:

TG156

杨东青, 谢高齐, 郭顺, 彭勇, 王克鸿, 黄俊. 排列角度对高氮钢双丝GMAW熔滴过渡行为及成形特性的影响[J]. 机械工程学报, 2024, 60(16): 171-179.

YANG Dongqing, XIE Gaoqi, GUO Shun, PENG Yong, WANG Kehong, HUANG Jun. Effect of Alignment Angle on Droplet Transition Behavior and Forming Characteristics of GMAW-based Double Wire for High Nitrogen Steel[J]. Journal of Mechanical Engineering, 2024, 60(16): 171-179.

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排列角度对高氮钢双丝GMAW熔滴过渡行为及成形特性的影响

Effect of Alignment Angle on Droplet Transition Behavior and Forming Characteristics of GMAW-based Double Wire for High Nitrogen Steel

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