重型机械Issue(3)：51-56,6.
2Cr12MoV不锈钢螺栓蠕变松弛行为研究
Study oncreep relaxation behavior of 2Cr12MoV stainless steel bolt
王寅超 1苗世潮 2林鹏 2李少林 2石多奇 2齐红宇 2陈庆森1
作者信息
- 1. 中国联合重型燃气轮机技术有限公司,北京 100015
- 2. 北京航空航天大学 能源与动力工程学院,北京 100191
- 折叠
摘要
Abstract
With the increasing demand for thermal power generation in China,large capacity and high-power gas turbine units are widely used in thermal power plants.In the process of gas turbine power generation,the bolts used to seal the connection at the inlet of the combustion pressure cylinder play a very important role.The load forms it experiences during the working process are complex,mainly including axial load,aerodynamic load,and temperature load.And bolts that have been in high temperature and high stress environments for a long time will experience stress relaxation,resulting in a decrease in the clamping force of the bolts.When the clamping force of the bolts is less than the minimum clamping force required for sealing,it will cause structural sealing failure.Therefore,bolts need to have good resistance to creep and relaxation.Normally,the creep performance of bolts needs to be considered during the design phase in order to evaluate their service capacity.Therefore,it is necessary to study the influence of temperature and stress on the creep performance of bolts from the perspective of creep,in order to ensure that bolts do not fail during service and thus ensure the safety and reliability of gas turbine operation.关键词
燃气轮机/蠕变/应力松弛/夹紧力Key words
gas turbine/creep/stress relaxation/clamping force分类
矿业与冶金引用本文复制引用
王寅超,苗世潮,林鹏,李少林,石多奇,齐红宇,陈庆森..2Cr12MoV不锈钢螺栓蠕变松弛行为研究[J].重型机械,2025,(3):51-56,6.
