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Steel MakingHardeningThe forgings can be hardened by cooling in still air or quen... Heat Treatment Of Lathe Planer And Similar Tools FIRE.--For these tools a good fire is one made of hard foundr... Carburizing Low-carbon Sleeves Low-carbon sleeves are carburized and pushed on malleable-ir... Making Steel Balls Steel balls are made from rods or coils according to size, st... Steel Can Be Worked Cold As noted above, steel can be worked cold, as in the case of ... The Care Of Carburizing Compounds Of all the opportunities for practicing economy in the heat-t... Composition And Properties Of Steel It is a remarkable fact that one can look through a dozen tex... High-chromium Or Rust-proof Steel High-chromium, or what is called stainless steel containing f... Critical Points One of the most important means of investigating the properti... Sulphur Sulphur is another impurity and high sulphur is even a greate... Oil-hardening Steel Heat slowly and uniformly to 1,450 deg.F. and forge thorough... Rate Of Cooling At the option of the manufacturer, the above treatment of gea... The Effect Of Tempering On Water-quenched Gages The following information has been supplied by Automatic and ... Blending The Compound Essentially, this consists of the sturdy, power-driven separa... Silicon Silicon prevents, to a large extent, defects such as gas bubb... Using Illuminating Gas The choice of a carburizing furnace depends greatly on the fa... Hardening High-speed Steel In forging use coke for fuel in the forge. Heat steel slowly ... Temperatures To Use As soon as the temperature of the steel reaches 100 deg.C. (... Gas Consumption For Carburizing Although the advantages offered by the gas-fired furnace for ... Placing Of Pyrometers When installing a pyrometer, care should be taken that it re... |
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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