摘要
综述了高速钢表面氧化膜形成的机理及剥落行为。通过改变氧化温度、氧化时间及氧化介质,得到高速钢轧辊在不同条件下的氧化行为。高速钢轧辊中主要的3种碳化物MC,M7C3及M2C氧化抗性依次升高,但都低于基质。水蒸气能细化氧化晶粒,提高氧化速率。氧化膜的剥落过程是内外应力的联合作用形成的,在生长过程中会在长大应力和热应力作用下开裂。根据对氧化膜形成及剥落过程的研究,优化高速钢轧辊的氧化过程,使之更好地应用到生产中。
This paper introduces the formation mechanism and peeling off behavior of the high-speed steel roll surface oxide film.By changing the oxidation temperature,oxidation time and oxidation medium,we can know well the oxidation behavior under different conditions.There are three kinds of carbides present in the iron matrix,MC,M7C3 and M2C the oxidation resistance of which increase in sequence,but still below that of the base material.Water vapor can contribute forming the fine grain size,enhancing oxidizing rate.The procedure of oxidation film peeling off is the result of the combine of internal stress and external stress,and the film will crack due to the stress and thermal stress growing in the growing process.Based on the study results on the oxidation film formation and peeling off,the oxidation process of the HSS roll can be optimized,so that it can be used into practice better.
出处
《武钢技术》
CAS
2013年第3期57-61,共5页
Wisco Technology
关键词
高速钢轧辊
氧化膜
剥落
HSS roll
oxidation film
temperature
peeling off
