Resistance welding of unweldable metals with thermal sprayed interlayers

Abstract A method forjoining of at least two materials, non-weldable directly to each other with resistance welding in a lap joint configuration, wherein a two-step sequence is used consisting of a first step to apply a surface protection aluminium layer by thermal spraying on the surface of a steel...

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Bibliographic Details
Main Authors Dömkes, Christian, Hündgen, Thomas, Lindner, Stefan
Format Patent
LanguageEnglish
Published 21.03.2024
Subjects
CLADDING OR PLATING BY SOLDERING OR WELDING
CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING
MACHINE TOOLS
METAL-WORKING NOT OTHERWISE PROVIDED FOR
PERFORMING OPERATIONS
SOLDERING OR UNSOLDERING
TRANSPORTING
WELDING
WORKING BY LASER BEAM
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Summary:Abstract A method forjoining of at least two materials, non-weldable directly to each other with resistance welding in a lap joint configuration, wherein a two-step sequence is used consisting of a first step to apply a surface protection aluminium layer by thermal spraying on the surface of a steel substrate and a second step, where a resistance welding process is used to weld the surface protection layer to an applied aluminum, aluminum alloy, magnesium or magnesium alloy sheet without having brittle intermetallic phases in the whole material configuration, the ratio of the thermally sprayed layer thickness to the reached spot weld diameter being lower or equal to 0.25 and the temperature in the contact area between the substrate and the surface protection layer being below 350 °C and the total sheet thickness including substrate, thermally sprayed layer and applied sheet, is from 1.5 mm up to 6.0 mm.
Bibliography:Application Number: AU20240201319