压力容器2017，Vol.34Issue(5)：9-16,8.DOI:10.3969/j.issn.1001-4837.2017.05.002
抗拉强度1100MPa以上高强度气瓶的研究
Research on High Strength Cylinders with Tensile Strength above 1100 MPa
吴传潇 1马夏康 2尹谢平 2毛剑峰1
作者信息
- 1. 浙江工业大学化工机械设计研究所,浙江杭州310014
- 2. 浙江金盾压力容器有限公司,浙江绍兴312367
- 折叠
摘要
Abstract
Through studying the high strength steel with the tensile strength above 1100 MPa.The design and analysis of φ229 mm,50 L high strength cylinders are made by wall thickness formula from ISO 9809-2:2010 and finite element technology.Finally,the design was verified by the leak-before-break (LBB) test.The results show that the 34CrMo4H high strength gas cylinder steel can meet the design requirements of high strength gas cylinders under the heat treatment conditions of 870 ℃ heating,water medium cooling quenching,tempering and air cooling at 570 ～ 600 ℃.The wall thickness design of high strength cylinder in accordance with the wall thickness formula from ISO 9809-2:2010 is reasonable,But the thickness of base should be analyzed with the finite element technique,which can not be directly taken as 2 times of the minimum design wall thickness.Compared with the GB 5099-1994 standard,the empty cylinder weight of the high strength cylinder is reduced by more than 20％ and greatly raised gas filling weight,realizing the lightweight of cylinders.The number of fatigue crack test is about 11000 times.The fatigue life is close to the level of 12000 times of the intact cylinder.For the pre-existing crack blasting test,when the test method of blasting pre-existing crack depth for the actual wall thickness of about 75 ％,when the test method of fatigue pre-existing crack depth for the actual wall thickness of 60％ ～ 70％,the test results are in agreement with standard.关键词
高强度气瓶/未爆先漏(LBB)/34CrMo4H/有限元技术/轻量化/预制裂纹Key words
high strength cylinder/leak-before-break (LBB)/34CrMo4H/finite element technology/lightweight/pre-existing crack分类
机械制造引用本文复制引用
吴传潇,马夏康,尹谢平,毛剑峰..抗拉强度1100MPa以上高强度气瓶的研究[J].压力容器,2017,34(5):9-16,8.
