Science | 1950 | Sound | B/W
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Shows effect of welding on metals - striking images of flashing lights, molten metals. Opening shot in diagrammatic - a cathode of tungsten sends an electric ore over a sample of metal to be tested. To avoid oxidation, the process is surrounded by an inert gas such as oxygen. Next shot shows actually and big diagram the melted of taking a cinema film of the process, to assess the effect of the high-voltage current on the metal. Similar shots of this. Stainless steel and with aluminium. The purpose of these tests if to look at behaviour of metal during welding. The film has many striking shots of current playing over molten metal - vapour, sparks, 'bubbling cauldron' effects (cf. 'Frankenstein comes to life'!)
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