Piston ring identification method
The working surface of the piston ring shall not be nicked, scratched or peeled off, and the outer cylindrical surface and the upper and lower end surfaces shall be-The fixed finish and curvature deviation should not be greater than 0. 02-0. 04mm, the standard subsidence of the ring in the groove shall not exceed 0. 15-0. 25mm, the elastic force and clearance of the piston ring conform to the regulations. In addition, the leakage degree of the piston ring should also be checked, I . e. the piston ring should be placed flat in the cylinder, a small light bulb should be placed under the piston ring, and a light shielding plate should be placed on it, then observe the light leakage gap between the piston ring and the cylinder wall, thus knowing whether the contact between the piston ring and the cylinder wall is good. Under normal circumstances, the light leakage seam of piston ring measured with thickness gauge should not exceed 0. 03mm. The length of the continuous light leakage joint shall not be greater than 1/3 of the cylinder diameter, the length of the light leakage joint at several places shall not be greater than 1/3 of the cylinder diameter, and the total length of the light leakage joint shall not exceed 1/2 of the cylinder diameter, otherwise, it shall be replaced. Piston ring marking GB/T 1149. 1- 94 Provisions: all piston rings requiring installation direction shall be marked on the upper side, I . e. near the side of the combustion chamber. The ring marked on the upper side includes: conical ring, inner chamfer, outer cutting table ring, nose ring, wedge ring and oil ring requiring installation direction. The upper side of the ring is marked. Guangzhou Huateng Auto Parts Co. , Ltd (Former South China piston ring Co. , Ltd) It is a leading enterprise that uses modern technology to produce piston rings such as automobiles, motorcycles and general machinery. We have been committed to the research and development of new technologies and materials for piston rings, and lead the use of new wear-resistant materials 'DT '(National patent), Alloy inlay technology (National patent). It combines ceramic infiltration technology with high permeability and high thermal stability, and has the advantages of high vibration damping and low friction coefficient. Since then, the product has become more durable and environmentally friendly.
GUANGZHOU HEARTEN AUTO PARTS CO,LTD. in the right situation can streamline the entire process, enabling your team to deliver higher quality work in a shorter amount of time.
GUANGZHOU HEARTEN AUTO PARTS CO,LTD. aligns itself with customers as partners to assist them in achieving their goals and objectives.
custom piston rings can also provide a new, productive option for business owners, if you're willing to use it.
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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