Piston ring

• Main Authors: MA MINGXING, SUN KANGHE, CHEN WENMING
• Format: Patent
• Language: Chinese; English
• Published: 31.05.2017
• Subjects: ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES; BLASTING; COMBUSTION ENGINES; CYLINDERS; CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; LIGHTING; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; PISTONS; SEALINGS; THERMAL INSULATION IN GENERAL; TRANSPORTING; WEAPONS

The invention relates to a piston ring. The piston ring comprises a piston ring body. An outer side of the piston ring body is provided with a piston ring opening gap. The surface of the piston ring body is successively provided with a spraying base layer, a ceramic thin film layer and a diamond coating layer, and the spraying base layer is an albata layer. The surface of the piston ring body is successively provided with the spraying base layer, the ceramic thin film layer and the diamond coating layer, friction coefficient of the piston ring is largely reduced, the friction coefficient of the piston ring is only a quarter of that of a common chrome-plated ring, so that the excircle surface and side surfaces of the piston ring can bear higher thermal load and mechanical load, wear resistance performance is higher, cost is reduced, tension stiffness of the piston ring is largely increased, and service lifetime of the piston ring is largely prolonged. 本发明涉及种活塞环，包括活塞环本体，活塞环本体的外侧设有处活塞环开口间隙，活塞环本体的表面依次设有喷涂基底层、陶瓷薄膜