BRITISH INDUSTRY.
CUTTING STEEL BY FRICTION
In the cutting ,of steel it is usual to employ either a tool of the same type or a'cutting flame supplied by oxy-acetylene or the electric arc. Some [ time ago, however it was found that a plain disc driven at a high speed would cut through steel simply by the heat of friction. This device has been considerably developed by a number of British machine tool makers in association with each other. The saw consits of a plain mild steel disc with a notched edge. In recent tests one user cut eight large 'joists right through in 40 minutes. In another case the saw was successfully used in cutting manganese steel rails which previously could not be cut except by the oxyacetylene flame. A maganese tramway rail can be cut through in 72 seconds,. An ordinary tram rail can be severed in 37 seconds. Owing to its efficiency and simplicity there is no doubt that the f.icfon saw. as it is called, will come into extensive use for cutting through all kinds of steel sections.
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Bibliographic details
Franklin Times, Volume 9, Issue 722, 11 April 1922, Page 7
Word Count
181BRITISH INDUSTRY. Franklin Times, Volume 9, Issue 722, 11 April 1922, Page 7
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