由于机械密封本身所具有的优点,近来随着石油化学工业的不断发展机械密封已得到了越来越广泛的应用。但是,机械密封由于设计、制造等方面的原因,在运转实践中常常出现摩擦副端面产生热裂的问题。这种端面热裂是影响密封质量造成端面漏泄严重的十分重要的因素。为了机械密封的进一步推广使用,摩擦副端面的热裂问题必须得到解决,机械密封摩擦副端面的热应力强度必须进行校核。这对建立合理的机械密封设计计算规范是 Due to the advantages of the mechanical seal itself, with the continuous development of the petrochemical industry, mechanical seals have been more and more widely used. However, mechanical seal due to design, manufacture and other reasons, often encountered in the operation of the friction side of the face of thermal cracking problems. This kind of end face thermal cracking is a very important factor that affects the quality of the seal caused by serious leakage of the end face. In order to further promote the use of mechanical seals, the problem of thermal cracking on the end face of the friction pair must be solved. The thermal stress intensity at the end faces of the mechanical seal friction pair must be checked. This is to establish a reasonable mechanical seal design calculation specification is