材料的选择是压力容器设计中最重要的部分之一,直接关系到压力容器的质量和安全性。在压力容器制造过程中,材料代用现象普遍发生,以优代劣、以厚代薄等材料代用会对壳体受力情况、设备强度、焊接、热处理、无损检测要求等产生影响,本文结合法规标准做一些具体分析。 The choice of materials is one of the most important parts of pressure vessel design, which is directly related to the quality and safety of pressure vessel. In the pressure vessel manufacturing process, the phenomenon of material substitution occurs generally, to the generation of inferior, with the generation of thin material substitution will affect the shell force, equipment strength, welding, heat treatment, non-destructive testing requirements, etc., this article combined with laws and regulations Standard to do some specific analysis.