METHOD FOR MAKING SINTERED HONEYCOMB MEMBER

FIELD: manufacture of honeycomb members of thin steel sheets resistant to high temperature corrosion, for example in systems for discharging exhaust gases of transport vehicles. ^ SUBSTANCE: method comprises steps of making honeycomb member by forming pack and(or) twisting to coil chrome- and alumin...

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Bibliographische Detailangaben
Hauptverfasser:	KURT FERDI, VIRES LJUDVIG, FAUST GJUNTER, SHLOTMANN KHEL'GE, BERGMANN ANDRE
Format:	Patent
Sprache:	eng ; rus
Schlagworte:	BLASTING CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING ENGINE PLANTS IN GENERAL GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS HEATING LIGHTING MACHINE TOOLS MACHINES OR ENGINES IN GENERAL MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS MECHANICAL ENGINEERING METAL-WORKING NOT OTHERWISE PROVIDED FOR METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION SOLDERING OR UNSOLDERING STEAM ENGINES THEIR RELEVANT APPARATUS TRANSPORTING WEAPONS WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	FIELD: manufacture of honeycomb members of thin steel sheets resistant to high temperature corrosion, for example in systems for discharging exhaust gases of transport vehicles. ^ SUBSTANCE: method comprises steps of making honeycomb member by forming pack and(or) twisting to coil chrome- and aluminum containing steel sheets part of which is profiled for defining flow-through ducts for fluid. Rolling lubricant applied onto sheet surface has such content and (or) such additives that it provides formation of carbon-enriched layer on steel sheet surface at heating. Honeycomb member is placed in tubular casing and adjacent sheets are mutually joined by heat treatment, mainly by annealing. Heating is realized until temperature more than 1100 C at mean rate equal at least to 25 C/min and then they are again cooled at the same rate. Before heat treatment it is possible to release inner stresses in separate zones of honeycomb member due to multiple squeezing or hammer forging of it. ^ EFFECT: possibility for making honeycomb member without solder, shortened production cycle, enhanced quality of joints due to quick heating until desired temperature. ^ 7 cl, 2 dwg