GAS-SHIELDED ARC WELDING METHOD AND METHOD FOR PRODUCTION OF WELD JOINT

To provide a gas-shielded arc welding method capable of preventing cold crack in a weld joint.SOLUTION: There is provided a gas-shielded arc welding method characterized by carrying out a welding operation by using a wire which comprises by mass: 0.05-0.13% of C; 0.35-1.20% of Si; 1.60-3.40% of Mn;...

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Bibliographische Detailangaben
Hauptverfasser:	MATSUNOBU SHINGO, FUJIMOTO HIRONORI, SAKAMOTO KOKI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS SOLDERING OR UNSOLDERING TRANSPORTING WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	To provide a gas-shielded arc welding method capable of preventing cold crack in a weld joint.SOLUTION: There is provided a gas-shielded arc welding method characterized by carrying out a welding operation by using a wire which comprises by mass: 0.05-0.13% of C; 0.35-1.20% of Si; 1.60-3.40% of Mn; 0.10-0.50% of Cu; 0.030% or less of P; 0.020% or less of S; and the balance of Fe with impurities and in which the diffusible hydrogen amount of a deposit metal is 2.0 ml/100 g or less, and by performing the movement of a solid wire and energization control between a molten pool and a contact tip to intermittently generate arc.SELECTED DRAWING: Figure 2 【課題】溶接継手における低温割れを抑制することができるガスシールドアーク溶接方法を提供する。【解決手段】質量％で、Ｃ：０．０５〜０．１３％、Ｓｉ：０．３５〜１．２０％、Ｍｎ：１．６０〜３．４０％、及びＣｕ：０．１０〜０．５０％を含有し、Ｐ：０．０３０％以下、及びＳ：０．０２０％以下、に制限し、残部が、Ｆｅ及び不純物からなり、溶着金属の拡散性水素量が２．０ｍｌ／１００ｇ以下であるワイヤを用いて、溶融プールとコンタクトチップ間でソリッドワイヤの進退動及び通電制御をしてアークを断続的に発生させて溶接を行うことを特徴とするガスシールドアーク溶接方法。【選択図】図２