Low hydrogen type coated electrode

Abstract

PURPOSE:To provide a low hydrogen type coated electrode which improves toughness of weld metal and is provided with superior re-arc characteristics by containing a limited amt. of Fe-Si of specified grain size constitution in compounded components for a low hydrogen type coating material. CONSTITUTION:Fe-Si of the grain size constitution wherein <=150mu grain sizes are >=95% and 44mu and below of these are >=65% is contained at 2-25% in a low hydrogen type coating material contg. metallic fluoride, metallic carbonate, an arc stabilizer, metallic powder other than Fe-Si, a painting material and a binder. The compounded flux components of this coating material are wet mixed and the mixture is coated on a core and is dried, whereby a low hydrogen type coated electrode is obtained. According to this electrode, the deposited metal of high hardness with less variance is obtained. Since this is superior in re-arc characteristic, welding workability is improved and this method is usable in a wide application range.

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Patent Citations (2)

    Publication numberPublication dateAssigneeTitle
    JP-S54159353-ADecember 17, 1979Nippon Steel CorpLow hydrogen type covered electrode
    JP-S56115602-USeptember 04, 1981

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Cited By (3)

    Publication numberPublication dateAssigneeTitle
    JP-2011177786-ASeptember 15, 2011Hinode Ltd, 日之出水道機器株式会社溶接棒
    JP-H07276083-AOctober 24, 1995Kobe Steel Ltd, 株式会社神戸製鋼所低水素系被覆アーク溶接棒
    WO-2012045139-A1April 12, 2012G. Pareto Empreendimentos Imobiliários LtdaProcédé de production d'électrode à faible teneur en hydrogène et faible absorption d'humidité