FIELD: machine engineering, namely production of piston rings, locking rings and other types of slit rings. SUBSTANCE: helix is wound from shaped steel band and simultaneously band is quenched at 900-1200oC. Then helix is cut by separate rings assembled in pack and clamped. Rings scragged in axial direction are tempered at temperature no more than 600oC and simultaneous they are subjected to thermal fixation along plane. Then rings are subjected to thermal stabilization at temperature no more than 350oC. EFFECT: enhanced geometry and operational properties of rings.
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| BUILTUP PISTON RING | 1998 |
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RU2145018C1 |
