确定压力容器安全系数原则

压力容器安全系数与材料参数紧密相关,确定材料许用应力值时,需要同时考虑材料抗拉强度和屈服强度更为合理;奥氏体不锈钢材料具有非常好的应变强化能力和韧性,为充分发挥奥氏体不锈钢材料优良性能,选取奥氏体不锈钢材料许用应力值时,需要特殊考虑。压力容器安全系数的选取建立在经验基础上,在保障压力容器安全性前提条件下,为节省材料和降低成本,随着理论研究深入和科学实验的进步,压力容器安全系数有所降低,这是科学设计和实用成功经验结合的结果。

Principles for the Determination of Safety Factor of Pressure Vessel

The safety factor of pressure vessel is closely related to material parameters.It is more reasonable to consider both the tensile and yield strengths for material allowance stress.Austenitic stainless steels should be considered specially to use their excellent strength properties of their strain strengthening effect.The safety factor of pressure vessels is based on practical experience and can be reduced to save materials by controlling pressure vessel safety with the development of pressure vessel techniques and experiments.