High temperature resistance of piston ring
Piston rings are subjected to high temperature and severe wear, and with the continuous strengthening of the engine, this situation becomes more and more severe. The surface treatment of piston rings plays a very important role in the manufacture of piston rings, the quality of surface treatment plays a vital role in the quality of piston rings. Therefore, the surface treatment level of piston rings often reflects the technical level of piston rings. At present, the company has a more comprehensive surface treatment technology in the surface treatment of piston rings, these technologies include chromium-based ceramic composite plating, chrome plating, molybdenum spraying, phosphating, molybdenum disulfide plating, 823 coating, PTFE spraying, tin plating, ceramic infiltration, special surface treatment, etc. The Chromium-based ceramic composite plating technology was developed by CYPR in cooperation with well-known domestic scientific research institutions and has reached the international leading level. Chromium-based ceramic composite coating piston ring has excellent characteristics such as high temperature resistance, high load resistance, high wear resistance, cylinder pull resistance, etc. , which will greatly improve the overall performance of the engine. In terms of chrome plating, it is equipped with the industry's first high-precision instrument laboratory with ion chromatograph, international advanced chrome plating additives, and all-round detection equipment with bath liquid composition and chromium layer quality, the quality of the company's chrome-plated piston rings has reached a higher level, and the production of the new full-automatic chrome-plated production line has brought the quality of the company's chrome-plated rings to a higher level. The company introduced a full set of molybdenum spraying equipment and technical software produced by German GTV company, which is fully automated (Including automatic processing, automatic detection) , Fully enclosed and intelligent equipment with flexible system performance, the application of this equipment has made the company's molybdenum injection piston ring technology reach a higher level, and has also made the company not only lead in the domestic piston ring industry, and close to the international level. In other aspects of surface treatment, the company has also developed electrophoretic molybdenum disulfide, 823 coating, Polytetrafluoroethylene spraying and tin plating technologies in China, all of which are the first to be developed and applied in China. At present, these technologies remain ahead in China.
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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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