WELDING METHOD FOR AUSTENITIC STAINLESS STEEL

PURPOSE:To prevent the solidification clacking and sigma embrittleness of the titled steel used at the elevated temp. by increasing the ferrite deposition amt. of the root pass of weld metal, decreasing the quantity of weld heat input and decreasing the ferrite deposition amt. of the 2nd and subsequ...

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Bibliographische Detailangaben
Hauptverfasser:	TAMURA KOUJI, TAKUWA TOSHIAKI
Format:	Patent
Sprache:	eng
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:	PURPOSE:To prevent the solidification clacking and sigma embrittleness of the titled steel used at the elevated temp. by increasing the ferrite deposition amt. of the root pass of weld metal, decreasing the quantity of weld heat input and decreasing the ferrite deposition amt. of the 2nd and subsequent passes. CONSTITUTION:The materials 2A, 2B to be welded are matched of a groove, and such a welding material wherein the ferrite amt. is contained at 2-5wt% in the austenite matrix is used for a root pass 4. The quantity of the heat input at the welding is limited to