前言影响设备失效的方式一般有这样几种:一是强度失效,二是稳定失效,三是高温蠕变热疲劳等失效。以上均不多见,而石油化工厂最多见还是密封失效和腐蚀失效,而密封问题已作为影响安稳长满运行的主要因素了。由于密封技术的重要性日益被人们所重视,所以近二十年来发展迅速,它已发展成为一门专门技 Preface The impact of equipment failure in general there are several ways: First, the strength failure, the second is a stable failure, the third is high temperature creep thermal fatigue failure. The above are rare, but the most common petrochemical plant failure and corrosion failure failure, and seal the problem has been as affecting the stability of the main factors run full. As the importance of sealing technology is increasingly valued, it has developed rapidly over the past two decades and has evolved into a specialized