一、紧固件的损坏及其预防措施汽轮机外壳上零件之间的螺纹连接,是在繁重的条件下工作的,螺纹连接也是一种最重要的结构部件,紧固件中的应力达3000～4000公斤力/厘米~2,工作温度与外壳或蒸汽管道相应截面中蒸汽温度差别不大(约10～15℃).在高温段工作的螺栓,会产生应力松弛.由于 First, the failure of fasteners and preventive measures Turbine shell parts on the screw connection between the work is in heavy conditions, the threaded connection is also one of the most important structural components, fasteners in the stress of 3000 ~ 4000 kg / cm ~ 2, the working temperature and the corresponding section of the shell or steam pipe steam temperature difference is not large (about 10 ~ 15 ℃). Bolts work in the high temperature, there will be stress relaxation.