高铬铸铁是制造线材和型材轧机轧辊的很有发展前途的材料。过去开发的铬为14～16％的高铬铸铁,因铸态硬度太高难以机加工而阻碍了在轧机上的应用。为使高铬铸铁轧辊广泛用于精轧机轧辊,乌克兰冶金科研所全面研究了铸态和热处理状态高铬铸铁的组织和力学性能。 结果表明,含铬17～17.6％的轧辊组织由屈氏体基体和大量均匀分布的碳化物组成,铬>20％,主 High-chromium cast iron is a promising material for the manufacture of wire and profile mill rolls. In the past, high-chromium cast irons with 14-16% chromium were used, hindering their application on rolling mills due to their high as-cast hardness and difficult machining. In order to make the high chromium cast iron roll widely used in the finishing mill roll, the Ukrainian Metallurgical Research Institute comprehensively studied the microstructure and mechanical properties of the as cast and as-treated high chromium cast iron. The results show that the roll structure with 17-17.6% chromium is composed of a troostite matrix and a large amount of uniformly distributed carbides with a chromium content of more than 20%. The main