MAKING STEEL BY WIRELESS
450 LB. AN HOUR
Steel making by wireless is the ai resting -description of a process whicl was demonstrated .at the Sheffielc works of Edgar Allen and Co. ( Ltd., recently. It is also a correct description, foj the melting is done by means of t high- frequency electrical' curiem which is projected into the furnace, which it induces heat in the material to be melted. ' The electrical < effects are ver? similar to those used in wireless installations. The walls, of . the crueiblr merely serve the purpose of a container..
The furnace is contained within n square wooden box so cool that tin. hand can be placed on it. The furnace is the Ajax Northrup High Frequency Furnace, and is the first of its kind in the world to be used for the manufacture of high quality tool steely It melts about 450 pounds of steel in an hour.
This is a notable advance on the old crucible furnace which held about 60 pounds, and was fired by coke or gas.
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https://paperspast.natlib.govt.nz/newspapers/SNEWS19280330.2.17
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Shannon News, 30 March 1928, Page 3
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174MAKING STEEL BY WIRELESS Shannon News, 30 March 1928, Page 3
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