|本期目录/Table of Contents|

[1]杜洪奎,盛水平.不锈钢波纹管膨胀节应力腐蚀研究进展[J].中国安全生产科学技术,2011,7(6):54-57.
　DU Hong-kui,SHENG Shui-ping.Study on stress corrosion testing of bellows in public pipes[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2011,7(6):54-57.
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不锈钢波纹管膨胀节应力腐蚀研究进展()
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
7
期数:
2011年6期
页码:
54-57
栏目:
学术论著
出版日期:
2011-06-30

文章信息/Info

Title:
Study on stress corrosion testing of bellows in public pipes
文章编号:
1673-193X(2011)-06-0054-04
作者:
杜洪奎; 盛水平
中国计量学院安全工程研究所，杭州 310018
Author(s):
DU Hong-kui;  SHENG Shui-ping
Research center on safety engineering, China JiLiang university, Hangzhou? 310018, China
关键词:
波纹管; 应力腐蚀; 残余应力
Keywords:
-
分类号:
X941
DOI:
-
文献标志码:
A
摘要:
波纹管膨胀节是现代动力管网和设备进行热补偿的关键部件之一,其作用除了位移补偿外,还兼有减振降噪和密封的功能。波纹管膨胀节不仅广泛应用于石油、化工、冶金、电力、原子能等工业部门,还应用于机车、船舶、城市燃气和民用部门。本文详细阐述了不锈钢波纹管组织结构、形变马氏体含量分布、残余应力分布。不锈钢波纹管在加工、成型过程中,波峰波谷会发生塑性变形,一部分奥氏体组织转变为马氏体组织,马氏体含量在波峰处最高,在波谷最低,均为拉应力。试验研究结果表明,波峰残余应力大,波谷小,固溶处理后残余应力变为压应力。残余应力越大,马氏体含量越高,不锈钢SCC敏感性大;直径小的波纹管,波峰曲率半径小,变形量大,故其残余应力和形变马氏体含量大,SCC敏感性大,易开裂。
Abstract:
bellow expansion joints is one of important parts in power and chemical equipment and pipe, it has many advantages such as stopping abbreviation and mechanical sealing. It is also widely used in not only petroleum, chemical engineering, metallurgy, nuclear industries, but also automobile, ship, fuel gas and family usage etc. This paper introduced stainless steel bellows micro-structure, marsentite percentage, residual stress distribution in detail. Stainless steel bellows peaks and troughs can produce plastic deformation in process and forming, then ammonia changes in to marsentite. Marsentite percentage in peak is best high, and in trough is best low. The residual stress in peak is more than that in trough and they are all belongs to tensile stress. The result showed that the main residual stress were transformed to compressive stress by solution treatment. The more residual stress and marsentite percentage are, the more stainless steel SCC sensitivity is. The small diameter bellow has a small curvature radius and a great deformation, so it’s residual stress and marsentite percentage is greater, and the SCC sensitivity is also greater.

参考文献/References:

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相似文献/References:

[1]杜洪奎,盛水平.不锈钢波纹管应力腐蚀防护方法研究[J].中国安全生产科学技术,2011,7(8):121.
　DU Hong-kui,SHENG Shui-ping.Stress corrosion cracking protection methods study on stainless steel bellows[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2011,7(6):121.

备注/Memo

备注/Memo:
收稿日期：2011-01-25
作者简介：杜洪奎，硕士，副教授。
基金项目：国家质检总局科技计划项目（编号：2009KQ-025）；杭州市科技局科技计划项目（编号：20091133B22）
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