01TWIIn brazing and soldering, the filler metal melts while the base metal remains solid. Most welding processes also melt the base metal, although this distinction does not apply to every welding method.
Read summary and source 02TWIIn brazing, molten filler metal enters the gap between components. Wetting and capillary action distribute it through the joint, which forms as the filler cools.
Read summary and source 03Lucas MilhauptJoint clearance affects capillary action and joint filling. Too little clearance can restrict filler flow, while too much can reduce the effectiveness of capillary action.
Read summary and source 04Lucas MilhauptFlux selection depends on the base metal, filler alloy and heating method. Flux helps remove remaining oxides and limit oxidation during heating.
Read summary and source 05Lucas MilhauptAluminum brazing fluxes are available in corrosive and non-corrosive families. With corrosive fluxes, proper removal of residues after joining is part of the process.
Read summary and source 06Lucas MilhauptMachining oil, grease, oxides and surface contamination can impair wetting and filler flow, increasing the risk of voids and incomplete joints.
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