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近年来,连续铸钢不断向高温化发展,因此,连铸机辊子所处环境也日益苛刻。传统的连铸机辊子在600℃下能保持良好的抗拉强度和屈服强度。如温度大于600℃时,高温强度显著降低,氧化增量急剧增加。为解决此问题,日本日立造船公司开发成功一种可满足上述要求的高性能连铸机辊子用材料,其化学成分为(％):Cr 14～25、CO 5～25、W 0.1～7、Ti 0.1～3、Al 0.1～3并且Ti+A1<4、O<0.01、N<
In recent years, continuous casting steel to the development of high temperature, therefore, continuous casting machine roller environment is increasingly harsh. Conventional caster rollers maintain good tensile strength and yield strength at 600 ° C. If the temperature is greater than 600 ℃, the high temperature strength is significantly reduced, a sharp increase in oxidation. In order to solve this problem, Japan Hitachi Shipbuilding Co., Ltd. has successfully developed a high-performance continuous casting machine roller material that meets the above requirements. Its chemical composition is as follows: Cr 14-25, CO 5-25, W 0.1-7, Ti 0.1-3, Al 0.1-3 and Ti + A1 <4, O <0.01, N <