Wetting length in gas metal arc brazing of galvanised steel. (17th February 2017)

• Record Type: Journal Article
• Authors: Makwana, P.; Shome, M.; Goecke, S.-F.; De, A.
• Is Part Of: Science and technology of welding & joining. Volume 22:Number 2(2017)
• Page Start: 166
• Page End: 169
• Publication Date: 2017-02-17
• Subjects: Wetting length -- Gas metal arc brazing -- Galvanised steel sheets -- Bead geometry; Welding -- Periodicals; Joints (Engineering) -- Periodicals; Surfaces (Technology) -- Periodicals; 671.52
• DOI: 10.1080/13621718.2016.1207289
• Languages: English
• ISSNs: 1743-2936

Abstract

Abstract : Appropriate substrate surface wetting by a molten filler ensures a sound bead profile during brazing. A theory to estimate the wetting length considering gradual cooling of liquid filler and loss in its ability to spread is currently unavailable. We present here a methodology to estimate wetting length based on the minimisation of energy for spreading of a liquid filler considering its gradual cooling and tested the computed results in gas metal arc brazing of galvanised sheets for a wide range of conditions. The computed wetting lengths are used further to estimate bead height and toe angle of joint profile. GRAPHICAL ABSTRACT: