What is the car piston ring belt packaging
Automotive piston ring belt packaging usually refers to putting the piston ring into a specific packaging container to protect it from damage and facilitate transportation and storage. Common packaging methods include plastic bag packaging, carton packaging and iron box packaging.
Common packaging methods and their characteristics
plastic bag packaging : This kind of packaging is relatively simple, occupies small space, can effectively prevent the piston ring rust. However, the piston ring of the plastic bag is usually not beautiful, and some manufacturers will cover the outside with a layer of paper box or kraft paper .
carton packaging : carton appearance is beautiful, easy to handle, can be marked simply. Before packaging, some manufacturers will also spray anti-oxidation coating on the surface of the piston ring to extend its service life. The carton packaging can also be secondary packaging of the piston ring to prevent friction .
iron box packing : usually used tinplate production, this kind of packaging high-grade and moisture-proof, can effectively isolate moisture, protect the piston ring .
Basic information about piston rings
Piston ring is embedded in the piston groove inside the metal ring, divided into compression ring and oil ring two. The compression ring is used to seal the combustible mixture in the combustion chamber, while the oil ring is used to scrape excess oil from the cylinder. Piston ring is a kind of metal elastic ring with large outward expansion deformation, which depends on the pressure difference of gas or liquid to form a seal between the outer circle of the ring and the cylinder, and between the ring and the ring groove .
Automotive piston ring installation precautions includes the following aspects:
Ensure that the piston ring is smoothly placed into the cylinder liner, and reserve an appropriate opening clearance at the interface, which is recommended to be controlled in the range of 0.06-0.10mm . This can ensure that the piston ring will not produce too much friction and wear due to too small clearance .
The piston ring should be properly mounted on the piston, and ensure that there is a suitable side clearance along the height of the ring groove, recommended to maintain between 0.10-0.15mm . This can ensure that the piston ring will not jam due to too small gap or leak due to too large gap .
The chrome ring shall be preferentially installed in the first position, and the opening shall not be directly against the eddy current pit on the top of the piston. This will reduce wear and tear on the job .
The openings of the piston rings shall be staggered 120 degrees from each other and must not be aligned with the piston pin holes . This prevents vibration and additional wear of the piston ring during operation .
When installing the cone section piston ring, the cone face should face up . For the installation of the torsion ring, the chamfer or groove should also face up. When installing a combination ring, install an axial lining ring first, followed by a flat ring and a corrugated ring, and the openings of each ring should be staggered .
During installation, keep the contact surface between the piston ring and the cylinder liner clean to prevent interference from impurities and dirt. After installation, check whether the contact surface between the piston ring and the cylinder liner is evenly fitted to avoid too loose or too tight .
Use special tools to install , such as special assembly pliers for piston rings, cone sleeves, etc. This reduces the risk of the piston ring being damaged or deformed by overexpansion .
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