KR950017049A

KR950017049A - X-groove welding method of submerged arc welding

Info

Publication number: KR950017049A
Application number: KR1019930027972A
Authority: KR
Inventors: 남기옥; 김용주
Original assignee: 조말수; 포항종합제철 주식회사; 백덕현; 재단법인산업과학기술연구소
Priority date: 1993-12-16
Filing date: 1993-12-16
Publication date: 1995-07-20

Abstract

본 발명은 석유탱크용접, 선박외판 용접 및 건축구조물 용접등에 적용되는 서브머지드 아크용접에 관한 것으로서, 표면 그루브 부위만을 가공하므로 시간이 절약되고, 용접도중에 용접금속이 용락되는 경우가 전혀 없으므로모 용접부의 결함이 발생하지 않아 용접결함에 따른 재용접을 하지 않아도 되는 서브머지드 아크용접의 X형 그루브 용접방법을 제공하고자 하는데, 그 목적이 있다.The present invention relates to a submerged arc welding applied to petroleum tank welding, ship shell welding, and building structure welding. It is an object of the present invention to provide a X-type groove welding method of submerged arc welding, which does not require re-welding due to welding defects, because the defect does not occur.

본 발명은 서브머지드 아크용접의 X형 그루브 용접방법에 있어서, 모재의 표면 한쪽만 가공하여 표면 그루브 부위를 형성하는 단계; 모재를 조립하여 표면 그루브 부위를 용접하는 단계; 모재의 이면을 가우징하여 표면과 이면이 대칭되도록 이면 가우징 부위를 형성하는 단계; 가우징 부위를 그라인딩하여 이물질을 제거하는 단계; 및 그라인딩이 끝난 상기 가우징 부위를 용접하는 단계를 포함하여 구성되는 서브머지드 아크용접의 엑스형 그루브 용접방법을 그 요지로 한다.The present invention provides a method for welding an X-type groove in submerged arc welding, comprising: forming a surface groove by processing only one surface of a base material; Assembling a base material to weld the surface groove portion; Gaussing the back surface of the base material to form a back gouging portion such that the front surface and the back surface are symmetrical; Grinding the gouging site to remove debris; And an X-type groove welding method of submerged arc welding comprising the step of welding the finished gouging site.

Description

X-groove welding method of submerged arc welding

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 종래의 용접개선방법을 설명하기 위한 용접개시선형상도,1 is a welding start line geometry for explaining a conventional welding improvement method,

제2도는 본 발명의 용접과정을 나타내는 것으로써 (가)는 용접하기 전의 모재의 표면개선 부위단면도 (나)는 본 발명에 따라 표면용접한후 이면 가우징 부위단면도 (다)는 본 발명에 따라 최종 용접한 후의 단면도,Figure 2 shows the welding process of the present invention (a) the surface improvement site cross-sectional view of the base material before welding (b) the surface gouging site cross-section view (b) after the surface welding according to the present invention (c) according to the present invention Cross section after final welding,

제3도는 본 발명에 따라 용접된 용접부의 사지,3 is a limb of a welded part welded according to the present invention,

제4도는 본 발명에 따라 용접된 용접부의 경도측정부위를 나타내는 참고도.Figure 4 is a reference diagram showing the hardness measurement portion of the welded weld in accordance with the present invention.

Claims

An X-type groove welding method of submerged arc welding, the method comprising: forming only a surface groove by processing only one surface of a base material; Assembling a base material to weld the surface groove portion; Gaussing the back surface of the base material to form a back gouging portion such that the front surface and the back surface are symmetrical; Grinding the gouging site to remove debris; And welding the gouging site after the grinding has been completed, wherein the X-type groove welding method of submerged arc welding is configured.

The depth of the groove portion is 1 / 2-2 / 3 of the thickness of the base material, the angle is 50-60 °, and the depth of the back gouging part is 1/2 of the thickness of the base material. X-type groove welding method for arc welding.

※ Note: The disclosure is based on the initial application.