How to distinguish piston rings?1
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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GUANGZHOU HEARTEN AUTO PARTS CO,LTD.’s purpose is to create superior value for our customers, employees, communities and investors through the production, conversion, delivery and sale of energy and energy services.
Consumers like these are interested not just in custom piston rings they will spend their money on, but also in the human and environmental impact of the supply chain that produces those goods.
Our PVD Ion Plating Piston Ring is manufactured with advanced multi-arc ion plating technology under high vacuum conditions. Stable arc discharge between cathode and anode generates high-energy plasma, which deposits dense, uniform coatings such as TiN, CrN, ZrN onto the piston ring surface under workpiece bias voltage.
With excellent adhesion and high bonding strength, the coating stays firm without peeling. Hardness reaches 1800–2500 HV, 4–6 times higher than base materials, recognized as a super-hard coating. Friction coefficient is 0.4, delivering 10× improved wear resistance and outstanding corrosion resistance. Ideal for heavy-load engines, construction machinery and commercial vehicles, it greatly extends service life and reduces maintenance costs.
Backed by professional PVD coating equipment and strict quality control, Hearten Auto Parts upholds Precision Craftsmanship, Technological Leadership to provide reliable high end piston ring solutions.
Our Ceramic Titanium Piston Ring uses cutting-edge nano ceramic coating and multi-arc ion plating process. In a high vacuum environment, high-energy plasma reacts and deposits uniformly to form high-performance coatings like TiN, TiC, ZrN, ensuring strong bonding with the substrate.
It features ultra-strong adhesion and high compactness. Hardness reaches 2200–2500 HV, 3–12 times higher than raw materials, classified as a super-hard coating. With friction coefficient 0.4, wear resistance is improved by 150 times, providing outstanding durability under extreme working conditions. The high-density coating also delivers superior corrosion resistance and stable low-friction performance.
Designed for high-performance engines and heavy-duty machinery, our ceramic titanium piston rings combine advanced technology with strict quality control, fully embodying Precision Craftsmanship, Technological Leadership.
Our CKS (CID) Piston Ring adopts upgraded Chromium-based Composite Ceramic technology, an industry breakthrough that meets Euro IV emission standards and delivers double the wear resistance of conventional chrome plating.
The process forms uniform mesh textures inside the outer chrome layer, filled with wear resistant particles to enhance anti-friction performance. The mesh structure also provides excellent oil storage capacity, effectively lowering friction and protecting cylinder liners. The ring body is strengthened by nitriding treatment, boosting hardness, strength and impact resistance.
The bad piston ring may be related to the air leakage caused by its wear or coke connection with the piston ring groove. If after cutting off a cylinder, the exhaust gas no longer from the oil or vent vent, the cylinder piston is not good use.
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