Results 221 to 230 of about 5,873 (262)

Volumetric Examination After PWHT on a Carbon Steel Pressure Vessel

Volume 5: High-Pressure Technology; ASME NDE Division; 22nd Scavuzzo Student Paper Symposium and Competition, 2014
Carbon steel pressure vessels may require post weld heat treatment (PWHT) for stress relief in accordance with global pressure vessel safety codes. When stress relieved, most of these vessels receive a full volumetric exam, such as radiography or ultrasound.
James W. Becker, Matthew L. Schulte
openaire   +1 more source

Effect of post-weld heat treatment (PWHT) time and multiple PWHT on mechanical properties of multi-pass TIG weld joints of modified 9Cr-1Mo steel

Welding in the World, 2014
The effect of post-weld heat treatment (PWHT) time and multiple PWHT on mechanical properties of modified 9Cr-1Mo steel weld joints has been studied using multi-pass tungsten inert gas (TIG) weld joints fabricated from 12.5-mm-thick plates using matching composition ER90S-B9 filler wire.
H. C. Dey, S. K. Albert, A. K. Bhaduri, G. G. Roy, R. Balakrishnan, S. Panneerselvi   +5 more
openaire   +1 more source

Buckling Assessment of Carbon Steel Pressure Vessels During PWHT

Volume 3A: Design and Analysis, 2018
Post weld heat treatment (PWHT) is often applied to welded pressure vessels and piping to increase the mechanical and metallurgical properties. During the PWHT, a pressure component made of a carbon steel to which PWHT is applied, is heated up to the temperature around 620 deg.C with +/− 25 deg.C tolerances and that elevated temperature is kept for 1 ...
openaire   +1 more source

Potential Detrimental Consequences of Excessive PWHT on Pressure Vessel Steel Properties

ASME 2010 Pressure Vessels and Piping Conference: Volume 6, Parts A and B, 2010
During fabrication of Pressure Vessels, steels undergo several heat treatments that aim to confer the required properties on the entire equipment, including welds and base metal. Indeed, the Quality heat treatment of the base material, which leads to achieve the target properties, is most of the time followed by Post Weld Heat Treatment (PWHT). The aim
Cédric Chauvy, Lionel Coudreuse, Patrick Toussaint   +2 more
openaire   +1 more source

Optimization of laser welding process parameters in dissimilar joint of stainless steel AISI316/AISI1018 low carbon steel to attain the maximum level of mechanical properties through PWHT

Optics and Laser Technology, 2019
In this investigation, laser welding process parameters have been optimized for austenitic stainless steel (AISI316) and low carbon steel (AISI1018) materials by using Taguchi based grey relational analysis.
M. Prabakaran, G. Kannan
semanticscholar   +1 more source

PWHT Tougness Degradation of Micro-Alloyed a-420 Fittings

CORROSION 2000, 2000
Abstract Mechanical properties of recently supplied ASTM A-420 WPL6 yr. 1996 (rev. a) fittings are discussed. Impact test results showing the detrimental effects of post weld heat treatment (PWHT) on the base material and weld heat affected zone toughness of quenched and tempered vanadium micro-alloyed fittings are presented.
openaire   +1 more source

The effect of PWHT on the microstructural evolution, carbides formation and mechanical properties of a Nb containing martensitic heat resistance steel used in gas turbine

, 2020
The purpose of this study was to investigate post weld heat treatment (PWHT) of a heat resistant alloy steel used in gas turbines, in terms of microstructural evaluation, carbide phases formation and mechanical properties. EN10302.2002.X10CrMoVNb9-1(DIN1.
H. Azad, S. H. M. Anijdan, H. Najafi
semanticscholar   +1 more source

Influence of filler metals and PWHT regime on the microstructure and mechanical property relationships of CSEF steels dissimilar welded joints

International Journal of Pressure Vessels and Piping, 2019
The nuclear grade modified 9Cr 1Mo (P91) and 9Cr-0.5Mo-1.8W V Nb (P92) are commonly used material for power plant components operating in the temperature range of 600–650 °C.
N. Saini, R. Mulik, M. Mahapatra
semanticscholar   +1 more source

Weld Repair of C, Cr-Mo Cokedrums (and Pressure Vessels) Without PWHT

Volume 3A: Design and Analysis, 2017
Many of the Cr{1-1/4 to 2-1/4}-Mo{1/2 to 1} pressure vessels in the refining and petrochemical industries such as process reactors, distillation columns, separators, pressurized storage vessels, and heat exchangers are typically vertical columns, most often supported by a circular skirt.
Alwyn Kaye, Patrick Lester, Darren Barborak   +2 more
openaire   +1 more source

Alternative PWHT to Improve High-Temperature Mechanical Properties of Advanced 9Cr Steel Welds

Journal of Materials Engineering and Performance, 2018
Fil: Burgos, Ariel. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Oficina de Coordinacion Administrativa Houssay. Instituto de Tecnologias y Ciencias de la Ingenieria "Hilario Fernandez Long". Universidad de Buenos Aires. Facultad de Ingenieria.
Ariel Burgos, Hernán Svoboda, Zhuyao Zhang, Estela Surian   +3 more
openaire   +2 more sources