压力容器2016，Vol.33Issue(7)：1-5,5.DOI:10.3969/j.issn.1001-4837.2016.07.001
奥氏体不锈钢深冷容器应变强化不同保载方式的探讨
Discussion on Different Holding Modes of Cold Stretching Technique for Austenitic Stainless Steel Cryogenic Pressure Vessels
苏文娟1
作者信息
- 1. 江苏省特种设备安全监督检验研究院 常州分院，江苏 常州 213016
- 折叠
摘要
Abstract
Yield strength of austenitic stainless steel can be enhanced and the wall thickness and the weight of the equipment can be reduced by using the cold stretching technique.On the premise of safety, realizing light-weight of cryogenic vessels has significance to energy conservation and emission reduction. In the process of cold stretching technique for cryogenic vessels the internal pressure needs to be main-tained at a certain value for a period of time.Cold-stretching pressure Pk shall be between 1 .5 and 1 .6 times Pc(calculating pressure)in a typical cold-stretching operation.If a 5%higher cold-stretching pres-sure is applied during the first 30 min to 1 h,the amount of time the vessel is subjected to Pk may be re-duced to accelerate stain formation.This paper will be based on cryogenic vessels production under differ-ent cold-stretching pressure holding mode to explore the effects of strain rate.Some suggestions about su-pervision and inspection during the manufacturing process are also provided.关键词
应变强化技术/保载模式/奥氏体不锈钢/应变速率Key words
cold stretching technique/holding mode/austenitic stainless steel/strain rate分类
机械制造引用本文复制引用
苏文娟..奥氏体不锈钢深冷容器应变强化不同保载方式的探讨[J].压力容器,2016,33(7):1-5,5.
