使用卧式离心机、选用高铬铸铁外层、中铬铸铁中间层和球墨铸铁芯部三种金属成分，以微机监控红外测温仪监控外层及中间层金属内表面温度的方法，确定中间层铁水和芯部铁水的浇注时机及离心机停机时机；采用分步球化处理、多次孕育和侧返缝隙浇口等相应铸造工艺及对辊身进行亚临界热处理等措施，成功地铸造了一对辊身尺寸为８００×１２００ｍｍ的复合轧辊。检验结果表明，三种金属熔合质量良好，辊身、辊颈组织和性能满足技术要求。 The use of horizontal centrifuge, the choice of high-chrome cast iron outer layer, chrome cast iron middle layer and ductile iron core three metal components to the computer monitor infrared thermometer to monitor the outer layer and the middle layer of metal inner surface temperature method to determine the middle Layer of hot metal and core metal pouring timing and timing of centrifuge shut down; the use of step-by-ball, multiple inoculation and side return to the gap gate and other appropriate casting process and the roll body subcritical heat treatment and other measures successfully cast A pair of roll body size of 800 × 1200mm composite roll. The test results show that the three kinds of metal fusion good quality, roll body, roll neck organization and performance to meet the technical requirements.