蠕墨铸铁活塞环之探讨

Exploration of Worm Graphite Cast Iron Piston Ring.

汽车发动机趋向体积小、重量轻、转速高、功率大的方向发展，对活塞环的要求越来越高，传统的灰铸铁及合金铸铁等材料已不能满足要求。蠕墨铸铁的力学性能及其他物理性能比灰铸铁及合金铸铁好得多，而工艺性能与灰铸铁相似。以蠕墨铸铁代替合金灰铸铁制造活塞环，不但具有良好的性能，而且成本也较低。

utomotive engines develop towards small volume, light weight and high speed and power which have demanded on piston ring an increasing requirement which cannot be met by conventional material such as grey cast iron and alloyed cast iron. With better mechanical properties and other physical properties than conventional material and similar technological properties the substitution of worm graphite for alloyed cast iron to produce piston ring will be of good performance and lower cost.