FLUX-CORED WIRE FOR GAS SHIELD ARC WELDING

FLUX-CORED WIRE FOR GAS SHIELD ARC WELDING

To provide a flux-cored wire capable of obtaining a weld metal excellent in strength and toughness after PWHT and also excellent in SR crack resistance, and further excellent in weld workability.SOLUTION: There is provided a flux-cored wire for gas shield arc welding including in mass% based on tota...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: MURANISHI YOSHIMASA
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 flux-cored wire capable of obtaining a weld metal excellent in strength and toughness after PWHT and also excellent in SR crack resistance, and further excellent in weld workability.SOLUTION: There is provided a flux-cored wire for gas shield arc welding including in mass% based on total wire mass, 78% or more Fe, 4-13% TiO, 1.0-2.4% Mn, 1.0-3.0% Cr, 0.2-1.2% Mo, 0.1-0.8% Si, 0.1-1.0% Mg, 0.05-0.25% fluorides (F conversion value), 0.01-0.10% C, 0.003-0.020% V, 0.003-0.020% Nb, less than 100 ppm B, and including the contents of Mn, C and V per total wire mass satisfying the relation of 28×Mn/(390×C+2,370×V)≥0.82.SELECTED DRAWING: None 【課題】ＰＷＨＴ後における強度及び靱性に優れ、耐ＳＲ性にも優れる溶接金属を得ることができ、さらに溶接作業性にも優れるフラックス入りワイヤを提供することを目的とする【解決手段】ワイヤ全質量あたりＦｅ：７８質量％以上、ＴｉＯ２：４〜１３質量％、Ｍｎ：１．０〜２．４質量％、Ｃｒ：１．０〜３．０質量％、Ｍｏ：０．２〜１．２質量％、Ｓｉ：０．１〜０．８質量％、Ｍｇ：０．１〜１．０質量％、フッ化物（Ｆ換算値）：０．０５〜０．２５質量％、Ｃ：０．０１〜０．１０質量％、Ｖ：０．００３〜０．０２０質量％、Ｎｂ：０．００３〜０．０２０質量％、及びＢ：１００ｐｐｍ未満を含有し、ワイヤ全質量あたりのＭｎ、Ｃ及びＶの含有量が、２８×Ｍｎ／（３９０×Ｃ＋２３７０×Ｖ）≧０．８２の関係を満足するガスシールドアーク溶接用フラックス入りワイヤ。【選択図】なし