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Experimental and numerical study of multi-pass welding process of pipe-flange joints
Mitthögskolan.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Product and Production Development.
1998 (English)In: Journal of Pressure Vessel Technology-Transactions of the ASME, ISSN 0094-9930, E-ISSN 1528-8978, Vol. 120, no 3, p. 244-251Article in journal (Refereed) Published
Abstract [en]

Residual deformations of pipe-flange joints due to thermal strains caused by the multi-pass welding procedure in a manufacturing process are investigated both experimentally and numerically (FEM). To avoid any risk of leakage between two mounted pipes using flange joints, geometrical distortions (twisting) of the flange must be prevented. How the flange is distorted depends both on the groove shape and the weld sequence used However, to be spared from machine work after the welding process, the distortions have to be minimized. A casting-technique has been developed in order to measure the twisting of the flange after each weld pass. Also, measurements of the residual radial deflection of the pipe have been performed.

Place, publisher, year, edition, pages
1998. Vol. 120, no 3, p. 244-251
National Category
Other Mechanical Engineering
Research subject
Computer Aided Design
Identifiers
URN: urn:nbn:se:ltu:diva-7428DOI: 10.1115/1.2842053Local ID: 5ce371d0-77c3-11dc-80da-000ea68e967bOAI: oai:DiVA.org:ltu-7428DiVA: diva2:980317
Note
Godkänd; 1998; 20071011 (kirhon)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved

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