WC_P增强铁基复合材料在冷轧带肋轧辊上的应用  

Application of Iron Matrix Composites Reinforced with WC_P to Cold-Rolled Ribbed Roller

作　　者：王帅[1] 宋延沛[1] 张统帅 孟国辉 刘冰春 卢超[2] 

机构地区：[1]河南科技大学材料科学与工程学院,河南洛阳471023 [2]武汉重工铸锻有限责任公司,湖北武汉430085

出　　处：《铸造》2014年第1期19-21,25,共4页Foundry

基　　金：河南省科技发展项目(0524250022);国家级大学生创新创业训练计划项目资助

摘　　要：通过离心铸造法制备了WC颗粒增强铁基复合材料冷轧带肋轧辊，并研究了复合材料带肋轧辊工作层内WC颗粒分布、界面结构、基体组织和力学性能以及带肋轧辊使用效果。研究结果表明：离心铸造法制备的复合材料冷轧带肋轧辊的复合材料工作层厚度可达20～50mm，复合材料层中WC，分布均匀，体积分数达到约70％～80％，复合材料工作层硬度HRA60～63，耐磨性是高速钢的2倍以上。芯部基体组织为贝氏体、石墨和少量复合碳化物，芯部基体硬度为HRC43～45，冲击韧度大于60kJ／㎡，复合材料辊环的使用寿命与同WC体积分数的硬质合金轧辊相当，价格降低50％左右。A composites cold-rolled ribbed roller reinforced with WCp was fabricated by centrifugal casting technology. The mechanical properties, matrix microstructures, WCe-distribution and the interface structure between the composites layer and core matrix were investigated in this paper. The results show that the composites layer thickness of the roller formed by centrifugal casting reach 20-50 mm. The distribution of WCp is even in the composites layer, and the volume fraction reach 70%-80%. The hardness of the composites working-layer and core matrix of the roller is kept at HRC 60-63 and HRC 43-45, respectively. Wear resistance is more than 2 times of high speed steel. The impact toughness of the roller core matrix exceeds 60 kJ/㎡, and the inner Fe-C alloy microstructure consists of bainite, graphite and composite carbide. The installed experiment prove that the service life of the composites roller and WC hard alloy roller is the same under same WCp volume fraction, and the price of the composites roller decreased about 50%, compared with WC hard alloy roller.

关 键 词：离心铸造 金属基复合材料 组织 力学性能 冷轧带肋轧辊 

分 类 号：TG333.17[金属学及工艺—金属压力加工] TB331[一般工业技术—材料科学与工程]