材料期刊网

根据某核电厂蒸汽发生器技术要求,以合金化改性灰铸铁为基体,装配石墨作润滑材料制备了铸铁/石墨复合减摩板；并对复合减摩板进行了显微组织分析、力学性能试验和摩擦磨损试验.结果表明：基体铸铁的压缩屈服强度为790 MPa,单片减摩板的极限承载能力为49770 kN,可以对核电蒸汽发生器起到足够的支撑作用；复合减摩板在低于6500 kN 载荷下运动1000次以内时摩擦因数稳定,均低于0．15,磨损量不足0．13 mm,具有良好的承载和减摩性能,满足核电蒸汽发生器减摩板技术要求.

With modified grey iron as substrate,assembled with graphite as lubrication material,the grey iron/graphite composite antifriction plate was designed and developed according to the requirement of steam generator in a nuclear power plant,and the microstructure analyzation,mechanical test and friction test were carried out.The results show that the compressive yield strength of the modified grey iron was 790 MPa;the ultimate bearing capacity of the antifriction plate was 49 770 kN,providing the efficient support for the steam generator of nuclear power.When rubbing under the load less than 6 500 kN for 1 000 times,the friction coefficient of the antifriction plate was stable and below 0.15;the wear value was also less than 0.13 mm,indicating excellent bearing capability and antifriction performance.The values of friction coefficient and wear loss both reached the technical requirement.