cold welding

== English == === Etymology 1 === From cold +‎ welding. From being a form of welding not requiring adding heat. ==== Noun ==== cold welding (uncountable) A phenomenon where in a vacuum, two clean oxide-less uncoated metal surfaces will fuse, weld, or merge together when they come into contact with each other, without any other action required (without fusion heating). Synonym: contact welding Coordinate term: fusion welding (heat welding by molten temperatures) ===== Translations ===== ==== See also ==== === Etymology 2 === See the etymology of the corresponding lemma form. ==== Verb ==== cold welding present participle and gerund of cold weld