FREMGANGSM TE FOR FREMSTILLING AV EN TERMISK OG MEKOEYT BELASTBAR SAMT VARME-KORROSJONSBESKYTTET GASSUTVEKSLINGSVENTIL FOR EN TUNGOLJEDREVET FORBRENNINGSMOTOR

1. Method of manufacturing a gas exchange valve with a high heat and mechanical resistance, and protected against corrosion, for a combustion engine using heavy oil, on the valve disc (1) of which an armoured valve seat is made in such a way that armoured material (3) introduced into a circumferenti...

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Bibliographische Detailangaben
Hauptverfasser:	LAUSCH, WOLFRAM, AMENDE, WELF
Format:	Patent
Sprache:	nor
Schlagworte:	BLASTING CLADDING OR PLATING BY SOLDERING OR WELDING COMBINED OPERATIONS CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES ENGINE PLANTS IN GENERAL HEATING LIGHTING MACHINE TOOLS MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING METAL-WORKING NOT OTHERWISE PROVIDED FOR OTHER WORKING OF METAL PERFORMING OPERATIONS SOLDERING OR UNSOLDERING STEAM ENGINES TRANSPORTING UNIVERSAL MACHINE TOOLS WEAPONS WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	1. Method of manufacturing a gas exchange valve with a high heat and mechanical resistance, and protected against corrosion, for a combustion engine using heavy oil, on the valve disc (1) of which an armoured valve seat is made in such a way that armoured material (3) introduced into a circumferential depression (2) and preferably comprising a nickel- or cobalt-based superalloy is merged by a remelt process with the basic valve material, and then a valve seat surface (4) and a valve disc peripheral surface (5) are ground on this armoured layer, characterized in that after the guiding of the valve seat surface (4) and the valve disc peripheral surface (5) the externally running boundary seams (6, 7) are remelted in a locally restricted manner by directed application of heat at the transition between the basic valve material and the armoured material (3) to obtain two protective layers (8, 9) running round the valve disc (1).