WATER’S NEW USE
EROSION OF HARDEST STEEL. i LONDON, Oct. 20. * Modern engineering and up-to-date machinery are demanding higher standards of performance than ever .before from metals and other materials used in constructional work. Recently it was announced by the Director of Research in the Westinghouse Company, that experiments in the direction of determining the rate at which metals wear away as they , cut through moisture-laden atmosphere at high speed, had proved that a tiny jet of water was able to cut through the hardest steel alloy. The machine used reproduced in a few minutes what would take place in aeroplane propellers spinning at high speeds through ' rain and log for mouths, or in steam-turbine blades in years of service. Plugs of hard metal whirled on a disk at the rate oi 20,-01) times a minute cut through two jets of water about the size of a lead pencil and nickel steel a quarter of an inch thick was eroded hah way through in two or three minutes, while metals noted for their hardness, were similarly eroded ip. about 20 minutes.
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Hokitika Guardian, 28 October 1932, Page 7
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181WATER’S NEW USE Hokitika Guardian, 28 October 1932, Page 7
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