Reinforcing aluminium alloy piston ring groove - by fusing ring portion and adding constituent alloying to fused part

An Al alloy piston ring groove is reinforced by: fusing the piston body to a certain depth in the zone where a ring groove is to be cut; simultaneously introducing an alloying addn. (I) into the fused piston alloy; and cutting the ring groove in the periphery of the resulting annular wear-resistant...

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Bibliographische Detailangaben
1. Verfasser:	ALEXANDR NIKOLAEVICH SHALAI, MIKHAIL DMITRIEVICH NIKITIN, NIKOLAI IVANOVICH ZAKHAROV ET ANATOLY PETROVICH BRATCHENKO
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	BLASTING CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS CHEMISTRY CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING CYLINDERS ENGINEERING ELEMENTS AND UNITS FERROUS OR NON-FERROUS ALLOYS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MACHINE TOOLS MECHANICAL ENGINEERING METAL-WORKING NOT OTHERWISE PROVIDED FOR METALLURGY PERFORMING OPERATIONS PISTONS SEALINGS SOLDERING OR UNSOLDERING THERMAL INSULATION IN GENERAL TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS WEAPONS WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	An Al alloy piston ring groove is reinforced by: fusing the piston body to a certain depth in the zone where a ring groove is to be cut; simultaneously introducing an alloying addn. (I) into the fused piston alloy; and cutting the ring groove in the periphery of the resulting annular wear-resistant weld. In a pref. method, the fusion depth is 0.3-1.3 X the final depth of the ring groove. (I) is pref. Ni or Ni/Cr alloy. Used esp. for top ring groove reinforcement in prod. of Al alloy pistons 210 mm in dia. for i.c. engines. Method is simpler than prior art and provides enhanced bonding strength between the weld and the piston body; a uniform weld is achieved with uniform distribution of alloy additive. L'INVENTION SE RAPPORTE AUX PISTONS EN ALLIAGE D'ALUMINIUM.SELON LE PRESENT PROCEDE, UNE SOUDURE ANNULAIRE 7 RESISTANTE A L'USURE EST REALISEE DANS LE CORPS DE PISTON 1 PAR LA FUSION DUDIT CORPS DE PISTON 1 AVEC INTRODUCTION SIMULTANEE D'UN MATERIAU D'APPORT S'ALLIANT A L'ALLIAGE D'ALUMINIUM DU PISTON ENTRE EN FUSION; ON PRATIQUE ENSUITE, DANS LA SOUDURE AINSI OBTENUE, UNE GORGE 3 DESTINEE A RECEVOIR LE SEGMENT DE PISTON.APPLICATION : PISTONS POUR MOTEURS A COMBUSTION INTERNE, COMPRESSEURS, POMPES A PISTON.