The material of cylinder liner

Work cylinder liner surface due to contact with high temperature and high pressure in the gas phase, a piston ring for high-speed reciprocating movement on the surface, it is decided to cylinder liner is not only to have enough strength and rigidity, but also must be high temperature resistant, corrosion resistance, wear resistance.

1. The characteristics of cast iron materials due to its excellent sliding characteristics and production processability, cylinder liner has been with flake graphite materials.The cast iron material had been intended to meet the needs of the wear resistance and strength, although by adding alloy with hard pearlitic matrix and a finer graphite, but in order to improve performance, so in recent years, the dispersion hardening material composite materials has become the mainstream。

2. The material of cylinder liner (cylinder) the influence of the sliding characteristics of cylinder liner (cylinder) early operation, the flow when the sliding surface processing of the surface of the substrate, graphite or hardening layer and most of the dew on the surface.So at the beginning of the operation, the surface processing surface character determines the sliding characteristics.The effects of the material clearly shows the until the mid part of mirror for later.

3. The hardening effects of layer due to production processability, ring wear factors, only by hardening matrix organization is difficult to greatly improve the wear resistance and so much of the diesel engine cylinder liner material is scattered by the hardening layer of composite material.

  (1) for ring main pressure parts, to prevent wear and scuffing.Hardening layer because of the hard, is a non-metallic, therefore the scuffing resistance of excellence.