Investigation on dynamic behaviors of bubble evolution in underwater wet flux-cored arc welding

被引：40

作者：

Feng, Jicai ^{[1
,2
]}

Wang, Jianfeng ^{[1
,2
]}

Sun, Qingjie ^{[1
,2
]}

Zhao, Huanyao ^{[2
]}

Wu, Laijun ^{[2
]}

Xu, Pengwei ^{[2
]}

机构：

[1] Harbin Inst Technol, State Key Lab Adv Welding & Joining, Harbin 150001, Heilongjiang, Peoples R China

[2] Harbin Inst Technol Weihai, Shandong Prov Key Lab Special Welding Technol, Weihai 264209, Peoples R China

来源：

JOURNAL OF MANUFACTURING PROCESSES | 2017年 / 28卷

基金：

中国国家自然科学基金;

关键词：

Underwater wet welding; FCAW; Bubble evolution; Welding electric information; Weld appearance; METAL TRANSFER; MECHANICAL-PROPERTIES; MICROSTRUCTURE; STABILITY; PARAMETERS;

D O I：

10.1016/j.jmapro.2017.06.003

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Bubble evolution behavior has a significant effect on the process stability and weld joint quality in underwater wet flux-cored arc welding (FCAW). In this study the visual sensing of bubble evolution behaviors based on high-speed camera method have been explored in attempt to accomplish the study of the wet welding process. The effects of preset welding parameters on the bubble evolution behaviors are investigated in detail. Four typical bubble evolution modes during the wet welding process and their corresponding welding electric information are determined to describe the bubble behaviors along with arc characteristics. Results indicated that the bubble evolution of underwater wet welding is unstable and complicated, necessitating control by adjusting the welding parameters to obtain a more stable protective effect. And there is a matching relationship between the coefficient of variation, weld appearance and bubble evolution mode for certain welding parameters. For underwater wet FCAW, a stable welding process can be acquired with a lower floating frequency and a larger maximum diameter of the bubble without arc extinguishing. (C) 2017 The Society of Manufacturing Engineers. Published by Elsevier Ltd. All rights reserved.

引用

页码：156 / 167

页数：12

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