一、前 言 高温高压化学装置用的压缩机,有往复式、透平式及螺杆式等型式。本文论述应用范围最广的各种化学装置上使用的往复式压缩机材料问题。 由于往复式压缩机用途较广,在材料方面碰到的问题也较多。另外,由于结构的关系,其主要部件承受交变应力,这样就不单纯是应力问题,还有疲劳、冲击、腐蚀疲劳等材料强度问题这一重要课题。 I. Introduction Compressors for high temperature and high pressure chemical plants are of the reciprocating type, the turbine type and the screw type. This article addresses the issue of reciprocating compressor materials used on a wide variety of chemical devices. Due to the wider use of reciprocating compressors, the material encountered more problems. In addition, due to the structural relationship, the main components bear alternating stress, so that it is not simply a stress problem, but also an important issue of material strength such as fatigue, impact and corrosion fatigue.