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Steel MakingPlacing The Thermo-couplesThe following illustrations from the Taylor Instrument Compan... Composition Of Transmission-gear Steel If the nickel content of this steel is eliminated, and the pe... Preventing Decarbonization Of Tool Steel It is especially important to prevent decarbonization in such... Hardening The forgings can be hardened by cooling in still air or quen... The Influence Of Size The size of the piece influences the physical properties obta... Temperature Recording And Regulation Each furnace is equipped with pyrometers, but the reading an... Application Of Liberty Engine Materials To The Automotive Industry The success of the Liberty engine program was an engineer... Flange Shields For Furnaces Such portable flame shields as the one illustrated in Fig. 1... Using Illuminating Gas The choice of a carburizing furnace depends greatly on the fa... Drop Forging Dies The kind of steel used in the die of course influences the he... Preventing Cracks In Hardening The blacksmith in the small shop, where equipment is usually ... For Milling Cutters And Formed Tools FORGING.--Forge as before.--ANNEALING.--Place the steel in a ... Preparing Parts For Local Case-hardening At the works of the Dayton Engineering Laboratories Company, ... Tempering Round Dies A number of circular dies of carbon tool steel for use in too... Sulphur Sulphur is another impurity and high sulphur is even a greate... Lathe And Planer Tools FORGING.--Gently warm the steel to remove any chill, is parti... Phosphorus Phosphorus is one of the impurities in steel, and it has been... Critical Points One of the most important means of investigating the properti... Typical Oil-fired Furnaces Several types of standard oil-fired furnaces are shown herew... Instructions For Working High-speed Steel Owing to the wide variations in the composition of high-speed... |
PhosphorusCategory: COMPOSITION AND PROPERTIES OF STEEL PHOSPHORUS is an element (symbol P) which enters the metal from the ore. It remains in the steel when made by the so-called acid process, but it can be easily eliminated down to 0.06 per cent in the basic process. In fact the discovery of the basic process was necessary before the huge iron deposits of Belgium and the Franco-German border could be used. These ores contain several per cent phosphorus, and made a very brittle steel (cold short) until basic furnaces were used. Basic furnaces allow the formation of a slag high in lime, which takes practically all the phosphorus out of the metal. Not only is the resulting metal usable, but the slag makes a very excellent fertilizer, and is in good demand. Next: Silicon Previous: Sulphur
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