Professional Custom Piston Rings Manufacturer and Spplier sales@heartenauto.com
The piston ring is divided into A. The overall structure of the piston ring: the process of casting or integral molding. B. Combined ring: a piston ring consisting of two or more parts is assembled in one ring groove. C. Slotted oil ring: oil ring with parallel sides, two contact ring banks and oil return holes. D. Grooved spiral spring oil ring: add an oil ring with spiral spring in the grooved oil ring. The spring can increase the radial specific pressure, and its acting force on the surface of the ring body is equal. Common in diesel engine rings. E. Steel belt combination oil Ring: An oil ring composed of a lining ring and two scraping rings. The design of lining ring varies from manufacturer to manufacturer and is common in gasoline engine ring. Piston Ring cross-section shape the shape of piston ring includes barrel surface ring, conical surface ring, inner chamfer twist ring, wedge ring and trapezoidal ring, nose ring, outer shoulder twist ring, inner chamfer twist ring and steel belt combined oil ring. , anti-directional chamfer oil ring, anti-directional chamfer oil ring, cast iron spiral spring oil ring, steel oil ring, etc. Piston rings are divided into cast iron and steel according to materials. According to the surface treatment material to divide: piston ring nitrided ring: nitrided layer hardness of more than 950HV, brittleness Grade 1, with good wear resistance and corrosion resistance. Chrome plating ring of piston ring: the chromium plating layer has fine, compact and smooth crystal, hardness above 850HV, very good wear resistance, crisscross microcrack network, which is beneficial to store lubricating oil. Phosphating ring of piston ring: through chemical treatment, a layer of phosphating film is produced on the surface of the piston ring, which can prevent rust of the product and improve the initial running-in property of the ring. Piston ring oxidation ring: under the conditions of high temperature and strong oxidant, an oxide film is formed on the surface of steel material, which has corrosion resistance, anti-wear lubrication and good appearance. There are also PVD and so on. Piston rings are divided according to their functions: piston rings include air rings and oil rings. The function of the Air ring is to ensure the sealing between the piston and the cylinder. Prevent the high temperature and high pressure gas in the cylinder from leaking into the crankcase in large quantities, and at the same time conduct most of the heat at the top of the piston to the cylinder wall and then take it away by cooling water or air.
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