SS400 압연강재의 용접방법에 따른 기계적 성질 연구

• 영문명: A Study on Mechanical Properties of SS400 Rolled Steel Materials according to Welding Methods
• 발행기관: 한국산업기술융합학회(구. 산업기술교육훈련학회)
• 저자명: 오상철(Sang Cheol Oh)
• 간행물 정보: 『산업기술연구논문지』산업기술연구 제22권 4호, 73~78쪽, 전체 6쪽
• 주제분류: 공학 > 공학일반
• 파일형태: PDF
• 발행일자: 2017.12.30

영문 초록

This study aims to figure out and understand mechanical properties and features of shielded metal arc welding, CO₂ gas solid wire arc welding, and CO₂ gas flux cored wire arc welding which are commonly used, in order to choose and utilize the most suitable welding method according to different structures. As a result of the study, CO₂ gas solid wire arc welding showed the largest tensile strength value, while CO₂ gas flux cored wire arc welding showed the intermediate value, and shielded metal arc welding did the lowest value. In case of CO₂ gas solid wire arc welding, it had the largest tensile strength because of weld zone hardening caused by quenching due to the absence of slag, and the lowest elongation rate. CO₂ gas flux cored wire arc welding, a semiautomatic welding method, had the intermediate value in terms of mechanical properties. Shielded metal arc welding showed the relatively low tensile strength because a weld metal zone was not quenched due to slag formed by flux melting, while its elongation rate was large. For these reasons, in case of a structure under impact loading, welding with slag which slow cooling of weld zone is available is considered to be more advantageous. Particularly when taking the mechanical properties into account, a semiautomatic welding, CO₂ gas flux cored wire arc welding, is regarded as the most ideal welding method in terms of work efficiency, tensile strength, and elongation rate.

목차

Abstract

Ⅰ. 서론

Ⅱ. 실험

Ⅲ. 실험결과 및 고찰

Ⅳ. 결론

참고문헌

키워드

일반구조용 압연강재 탄산가스 솔리드 와이어 아크용접 탄산가스 후럭스코어드 와이어 아크용접 SS400 CO₂ Gas Solid Wire Arc Welding CO₂ Gas Flux Cored Arc Wire Welding