奥氏体不锈钢制压力容器应变强化工艺研究及安全性分析

中国机械工程 ›› 2014, Vol. 25 ›› Issue (24): 3359-3364.

奥氏体不锈钢制压力容器应变强化工艺研究及安全性分析

韩豫;王可胜;陈晓平;张柱

宁波工程学院,宁波,315016

出版日期:2014-12-25 发布日期:2014-12-30
基金资助:
国家自然科学基金资助项目（51405249);浙江省自然科学基金资助项目（LQ14E050002）;宁波市自然科学基金资助项目（2014A610050）;浙江省新苗人才计划资助项目（2013R422028）

Experimental Investigation and Safety Analysis on Cold Stretching for Austenitic Stainless Steel Pressure Vessels

Han Yu;Wang Kesheng;Chen Xiaoping;Zhang Zhu

Ningbo University of Technology,Ningbo,Zhejiang,315016

Online:2014-12-25 Published:2014-12-30
Supported by:
National Natural Science Foundation of China（No. 51405249）;Zhejiang Provincial Natural Science Foundation of China（No. LQ14E050002）;Natural Science Foundation of Ningbo（No. 2014A610050）

摘要/Abstract

摘要：

根据欧盟EN 13458-2: 2002中关于奥氏体不锈钢制压力容器应变强化标准确定了材料的许用应力,设计并制造了奥氏体不锈钢制试验容器，合理制定了焊接工艺并对容器焊缝进行了射线和渗透检测，所有焊缝质量均达到Ⅰ级合格。通过自行开发的精确自动加压设备对试验容器实施应变强化工艺,通过测量应变强化后容器周长变化量来计算强化容器的永久变形量，并与理论值进行了比较,两者吻合较好。对应变强化容器进行了爆破试验，以确定其爆破压力和爆破部位，并测量容器启裂部位的周长变化量和壁厚减薄量，检验强化容器的塑性储备。探究了应变强化容器极限承载压力和爆破安全系数并讨论了其安全性。

关键词: 奥氏体不锈钢, 压力容器, 应变强化, 许用应力, 安全系数, 爆破试验

Abstract:

The allowable stress of ASS was determined according to the cold stretching of ASS pressure vessels from European Standard EN 13458-2:2002. An experimental vessel of ASS was designed and manufactured. The welding process was reasonably made and favourable welds quality was proved with classⅠ of radiographic and penetrant testing. The technique of cold stretching was implemented by a self-developed precise automatic pressure device. The circumference variation was measured to calculate the permanent deformation of the stretched vessel. The experimental results show good agreement with the theoretical values. Bursting pressure test for the cold stretched vessel was conducted to define its burst pressure and location, also plastic reservation was examined by measuring the variation of the circumference and wall thickness of the crack initiation site. Ultimate load-carrying capacity and bursting safety factor were investigated to discuss the safety of the cold stretched experimental ASS pressure vessel.

Key words: austenitic stainless steel(ASS), pressure vessel, cold stretching, allowable stress, safety factor, bursting test

中图分类号:

TH49

韩豫, 王可胜, 陈晓平, 张柱. 奥氏体不锈钢制压力容器应变强化工艺研究及安全性分析[J]. 中国机械工程, 2014, 25(24): 3359-3364.

Han Yu, Wang Kesheng, Chen Xiaoping, Zhang Zhu. Experimental Investigation and Safety Analysis on Cold Stretching for Austenitic Stainless Steel Pressure Vessels[J]. China Mechanical Engineering, 2014, 25(24): 3359-3364.

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