The creep curves of B16 steel and 25Cr2MoVA steel at 550 ℃,which are the common materials for bolts,were drawn through the testing using CSS3910 high temperature creep testing machine.By fitting these creep curves using Norton equation,the creep equations of the two kinds of materials were gained.A threedimensional metal to metal contact(MMC) bolted flange joint FE model was developed by finite element software ANSYS,and the different effect on sealing performance of MMC flanged joint caused by creep of bolt materials was analyzed.Results show that the creep resistance of the bolt made of B16 steel is better than that of the bolt made of 25Cr2MoVA steel under the operating temperature of 550 ℃,which can guarantee MMC not separating during service period.Therefore,when the bolt flange joint temperature is higher than 500 ℃,the choice of B16 bolt instead of 25Cr2MoVA bolt can achieve more reliable sealing effect.
参考文献
相似文献
引证文献
引用本文
徐严言,周腾飞,关凯书,章兰珠.25Cr2MoVA和B16螺栓在法兰接头中的抗蠕变性能[J].润滑与密封,2017,42(11):111-114. . Creep Resistance of 25Cr2MoVA Steel and B16 Steel Bolts in Flange Joints[J]. Lubrication Engineering,2017,42(11):111-114.