Piston ring, raw material therefor, and production method for both

In order to provide a large steel ring that is lighter and thereby contributes to improved fuel consumption, that has lower tensile strength, and has excellent wear resistance and scuffing resistance, and in order to also provide a raw material therefor and a production method for both, a large stee...

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Bibliographische Detailangaben
Hauptverfasser:	KAKEGAWA SATOSHI, KAWANISHI MINORU, SHIMA YUJI
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES BLASTING CHEMISTRY COMBUSTION ENGINES CYLINDERS CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES ENGINEERING ELEMENTS AND UNITS FERROUS OR NON-FERROUS ALLOYS FORGE FURNACES FORGING GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HAMMERING HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES,RIVETS, BOLTS OR WHEELS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS,WHEELS, RINGS, BARRELS, BALLS MECHANICAL ENGINEERING MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS PERFORMING OPERATIONS PISTONS PRESSING METAL PUNCHING METAL RIVETING SEALINGS THERMAL INSULATION IN GENERAL TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS WEAPONS
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Beschreibung
Zusammenfassung:	In order to provide a large steel ring that is lighter and thereby contributes to improved fuel consumption, that has lower tensile strength, and has excellent wear resistance and scuffing resistance, and in order to also provide a raw material therefor and a production method for both, a large steel ring having reduced ring width (h1) and radial direction thickness (a1), and having a nominal diameter (d1) of at least 200 mm but less than 1,100 mm is obtained from a hot-forged cylindrical steel material by combining: steel including as compulsory alloy elements C, Si, Mn, and Cr, including as optional alloy elements Ni, V, and Mo, and having the thermal conductivity and/or resistance to thermal degradation thereof adjusted; and hot forging that includes a ring rolling step.