The importance of spatter formed in shielded metal arc welding

Journal Article · Mon Oct 15 00:00:00 EDT 2007 · Materials Characterization

DOI:https://doi.org/10.1016/j.matchar.2006.09.011· OSTI ID:21062160

Mora, J ^[1]; Molleda, J R ^[2]; Mora, E ^[1]; Mellor, B G ^[3]

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1. Escuela Tecnica Superior de Ingenieros Navales de Madrid (UPM) (Spain)
2. Universidad Complutense de Madrid (Spain)
3. University of Southampton (United Kingdom)

Spatter results when droplets of liquid metal that have been ejected from the weld pool by the impact of small droplets from the covered electrode solidify and weld to the surface of the base material. The present paper studies spatter and reveals why these small droplets do not oxidise during their short trajectory and accounts for why they arrive with sufficient heat to weld to the adjacent base material. Welds were thus performed on mild steel using covered electrodes (rutile type) to obtain spatter on the adjacent base material. Scanning electron microscopy and X-ray mapping were used to study the above mentioned phenomena.

• OSTI ID: 21062160
• Journal Information: Materials Characterization, Vol. 58, Issue 10; Other Information: DOI: 10.1016/j.matchar.2006.09.011; PII: S1044-5803(06)00276-2; Copyright (c) 2006 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 1044-5803
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
DROPLETS
LIQUID METALS
RUTILE
SCANNING ELECTRON MICROSCOPY
SHIELDED METAL-ARC WELDING
STEELS
SURFACES
WELDED JOINTS
X RADIATION