In this study, for the hard-facing of spring-loaded pressure relief valve seats, the residual stress distributions after the tungsten inert gas welding, (TIG) postwelded heat treatment and subsequent surface turning were investigated. The heat input parameters of welding were calibrated using an infrared imaging and thermocouples. The residual stress distributions were computed using three-dimensional finite element model. The neutron diffraction approach was employed to verify the finite element calculation. It is found that, the surface temperature during hard-facing welding shows a double ellipsoidal shape with the highest value of around 1570 °C. The high residual stress zones are located exactly under the welded joint except a slight deviation in the hoop direction. The magnitudes of tensile residual stresses in the three directions increase with their corresponding locations from the root of the joint into the base metal. The residual stresses in all of the three directions decrease significantly after the heat treatment. After surface turning, the residual stresses are tensile except for those close to the inner surface that are compressive in axial and radial directions.
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December 2014
Research-Article
Residual Stress Distribution in Hard-Facing of Pressure Relief Valve Seat
Li Ai,
Li Ai
Key Laboratory of Pressure Systems
and Safety (MOE),
School of Mechanical and Power Engineering,
and Technology,
and Safety (MOE),
School of Mechanical and Power Engineering,
East China University of Science
and Technology,
Shanghai 200237
, China
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Xinhai Yu,
Xinhai Yu
Key Laboratory of Pressure Systems
and Safety (MOE),
School of Mechanical and Power Engineering,
and Technology,
and Safety (MOE),
School of Mechanical and Power Engineering,
East China University of Science
and Technology,
Shanghai 200237
, China
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Wenchun Jiang,
Wenchun Jiang
College of Chemical Engineering,
China University of Petroleum
,Qingdao 266555
, China
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Wanchuck Woo,
Wanchuck Woo
Neutron Science Division,
Korea Atomic Energy Research Institute
,Daejeon 305-353
, South Korea
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Xiaofeng Ze,
Xiaofeng Ze
Wujiang Dongwu Machinery Co., Ltd.
,Jiangsu 215213
, China
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Shan-Tung Tu
Shan-Tung Tu
1
Key Laboratory of Pressure Systems
and Safety (MOE),
School of Mechanical and Power Engineering,
and Technology,
e-mail: sttu@ecust.edu.cn
and Safety (MOE),
School of Mechanical and Power Engineering,
East China University of Science
and Technology,
Shanghai 200237
, China
e-mail: sttu@ecust.edu.cn
1Corresponding author.
Search for other works by this author on:
Li Ai
Key Laboratory of Pressure Systems
and Safety (MOE),
School of Mechanical and Power Engineering,
and Technology,
and Safety (MOE),
School of Mechanical and Power Engineering,
East China University of Science
and Technology,
Shanghai 200237
, China
Xinhai Yu
Key Laboratory of Pressure Systems
and Safety (MOE),
School of Mechanical and Power Engineering,
and Technology,
and Safety (MOE),
School of Mechanical and Power Engineering,
East China University of Science
and Technology,
Shanghai 200237
, China
Wenchun Jiang
College of Chemical Engineering,
China University of Petroleum
,Qingdao 266555
, China
Wanchuck Woo
Neutron Science Division,
Korea Atomic Energy Research Institute
,Daejeon 305-353
, South Korea
Xiaofeng Ze
Wujiang Dongwu Machinery Co., Ltd.
,Jiangsu 215213
, China
Shan-Tung Tu
Key Laboratory of Pressure Systems
and Safety (MOE),
School of Mechanical and Power Engineering,
and Technology,
e-mail: sttu@ecust.edu.cn
and Safety (MOE),
School of Mechanical and Power Engineering,
East China University of Science
and Technology,
Shanghai 200237
, China
e-mail: sttu@ecust.edu.cn
1Corresponding author.
Contributed by the Pressure Vessel and Piping Division of ASME for publication in the JOURNAL OF PRESSURE VESSEL TECHNOLOGY. Manuscript received January 29, 2013; final manuscript received January 28, 2014; published online September 4, 2014. Assoc. Editor: Maher Y. A. Younan.
J. Pressure Vessel Technol. Dec 2014, 136(6): 061403 (10 pages)
Published Online: September 4, 2014
Article history
Received:
January 29, 2013
Revision Received:
January 28, 2014
Citation
Ai, L., Yu, X., Jiang, W., Woo, W., Ze, X., and Tu, S. (September 4, 2014). "Residual Stress Distribution in Hard-Facing of Pressure Relief Valve Seat." ASME. J. Pressure Vessel Technol. December 2014; 136(6): 061403. https://doi.org/10.1115/1.4026977
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