试验结果表明，采用稀土复合孕育剂，不仅可以提高活塞环的机械性能，而且可以减少合金元素用量，降低生产成本。
The experiments showed that RE-containing inoculant not only increased mechanical properties of piston rings, but also reduced the consumption of alloying elements and cost of production.
一种取代活塞环表面电镀硬铬的复合涂层及其加工方法。
The invention relates to the composite coating and machining method replacing the chrome-faced piston ring.
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