J. Ocean Eng. Technol. Search

CLOSE


J. Ocean Eng. Technol. 2001;15(4):73-79.    

An Experimental Study on the Arc Stability Improvement of Underwater Wet Welding with Flux Ingredients
피복성분에 의한 수중용접봉의 아크 안정성 개선에 관한 실험연구
김복인,노창석,정교헌,김민남
부경대학교 대학원 기계공학과,부경대학교 대학원 기계공학과,부경대학교 대학원 기계공학과,부경대학교 기계공학과
© 2001 The Korean Society of Ocean Engineers     Open access / Under a Creative Commons License
Keywords: Underwater wet arc welding, Underwater wet welding electrode, Arc stability, Slag, Bead appearance, Welding condition, Heat affected zone
핵심용어: 습식수중 아크용접, 습식수중 용접봉, 아크 안정성, 슬래그, 비드 외관, 용접조건, 열영향부
Abstract
Underwater wet bead-on-plate welds were experimentally performed on 11mm thick SS400 steel plate as base metal by using six different types of flux coated electrodes of 3.2mm diameter. Two kinds of different flux coated wet arc electrodes (UW-1, UW-2) were individually designed flux materials, three kinds of the electrodes (E4301, E4311, E4313) were terrestrial electrodes and the another one (TN20) was an imported underwater wet welding electrode. As results, the individually designed flux coated underwater electrode, UW-2 and TN20 had a good starting and the excellent arc stability compared with other electrodes. No significant difference of bead appearance could be detected, but the slag detachability of TN20 electrodes was relatively undesirable. By rapid cooling rate, the hardness value and the portion of martensite of HAZ were increased, but it was considerably maintain stable for TN20 and UW-2 electrodes. The individually designed flux coated electrode, UW-2 could be used in practice for underwater bead welds.


ABOUT
BROWSE ARTICLES
ARTICLE CATEGORY

Browse all articles >

PUBLICATION ETHICS
FOR CONTRIBUTORS
Editorial Office
President Office BD Rm. 1302, 13 Jungang-daero 180beon-gil, Dong-gu, Busan 48821, Republic of Korea
Tel: +82-51-759-0656    Fax: +82-51-759-0656    E-mail: ksoehj@ksoe.or.kr                

Copyright © 2024 by The Korean Society of Ocean Engineers.

Developed in M2PI

Close layer
prev next