METHOD OF JOINING MARTENSITIC STAINLESS STEEL

PROBLEM TO BE SOLVED: To provide a joining method which makes it possible to obtain a defectless joint part which does not give a cracking and other defects in a short joining work time in heating and joining of martensitic stainless steels. SOLUTION: In cooling after the heating and joining in the...

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Bibliographische Detailangaben
Hauptverfasser:	HORIO KOJI, KITO KAZUNARI, INAGAKI SHIGEYUKI
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS MACHINE TOOLS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METAL-WORKING NOT OTHERWISE PROVIDED FOR METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS PERFORMING OPERATIONS SOLDERING OR UNSOLDERING TRANSPORTING WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a joining method which makes it possible to obtain a defectless joint part which does not give a cracking and other defects in a short joining work time in heating and joining of martensitic stainless steels. SOLUTION: In cooling after the heating and joining in the diffusion joining of the martensitic stainless steels, the heated areas are forcibly cooled and are then cooled at cooling rates from 0.6 to 10 deg.C/s during >=1,100 deg.C, from 2.4 to 25 deg.C/s between 300 and 1100 deg.C and from 0.6 to 8 deg.C/s between 100 and 300 deg.C. In the case of the martensitic stainless steel of =1100 deg.C, from 2.4 to 30 deg.C/s between 100 and 1100 deg.C.