Commonly used piston ring materials

Cast iron is a commonly used material for piston ring production. It has the characteristics of low cost and can adapt to high temperature and high pressure. However, its defects such as high density, high brittleness, easy aging and corrosion are also obvious, and it is not easy to use at high speed and high temperature.

1. cast iron piston ring

Cast iron is a commonly used material for piston ring production. It has the characteristics of low cost and can adapt to high temperature and high pressure. However, its defects such as high density, high brittleness, easy aging and corrosion are also obvious, and it is not easy to use at high speed and high temperature. Cast iron piston rings are generally suitable for low-power and low-speed engines.

2. copper alloy piston ring

Copper alloy is a traditional piston ring material. It has good thermal and electrical conductivity, and has the advantages of wear resistance, high temperature resistance, and good corrosion performance. Therefore, it is widely used in high-performance, high-speed and high-temperature engines. However, the price of the material is high, the processing is difficult, and the manufacturing cost is high.

3. steel piston ring

The steel piston ring material has high hardness, good abrasion resistance, long life, and good high temperature resistance. It is widely used in mechanical engineering, aerospace and other fields. However, the material has a high density and is prone to resonance sound and thermal expansion, so its application range is relatively limited.

4. wear-resistant alloy piston ring

Wear-resistant alloy piston ring is coated with a thin wear-resistant alloy layer on the surface of cast iron, steel and other materials by EDM to improve its hardness, wear resistance and heat resistance. The material has the characteristics of high wear resistance, high temperature performance and smooth surface, and has obvious effect on high-speed, high-load and high-temperature high-power engines.