In order to provide a welding system capable of freely controlling dispersion and concentration of arc heat input at a groove face of base material and enable to ensure melting of the base material while restraining excessive weld heat input by carrying out a control of a heat input distribution of arc, in arc welding by a wire consumable electrode system, at a groove between welded members, a position of a weld torch or feed speed of a wire is periodically varied and welding is carried out by controlling a phase difference between the variation and an arc current characteristic when it is changed. <IMAGE>
申请公布号
EP0983816(A3)
申请公布日期
2002.12.18
申请号
EP19990307039
申请日期
1999.09.03
申请人
JAPAN AS REPRESENTED BY DIRECTOR GENERAL OF NATIONAL RESEARCH INSTITUTE FOR METALS;ISHIKAWAJIMA-HARIMA HEAVY INDUSTRIES CO., LTD.;DAIHEN CORPORATION