| To purge the earth of death's impurities and cause deceased animal matter to be once more numbered among the treasures of life there are hosts of sausage-queens, including, in our part of the world, the Bluebottle (Calliphora vomitaria, Lin.) and ... Read more of THE BLUEBOTTLE at Bugs Insects.net |  Informational.caPrivacy |
Steel MakingThe Quenching TankThe quenching tank is an important feature of apparatus in c... Hardening Steel is hardened by quenching from above the upper critical.... Application Of Liberty Engine Materials To The Automotive Industry The success of the Liberty engine program was an engineer... Hardening The forgings can be hardened by cooling in still air or quen... Instructions For Working High-speed Steel Owing to the wide variations in the composition of high-speed... Cyanide Bath For Tool Steels All high-carbon tool steels are heated in a cyanide bath. Wi... Heat-treating Equipment And Methods For Mass Production The heat-treating department of the Brown-Lipe-Chapin Company... The Influence Of Size The size of the piece influences the physical properties obta... Effect Of Different Carburizing Material [Illustrations: FIGS. 33 to 37.] Each of these different p... The Electric Process The fourth method of manufacturing steel is by the electric f... Care In Annealing Not only will benefits in machining be found by careful anne... Tungsten Tungsten, as an alloy in steel, has been known and used for a... Annealing Method Forgings which are too hard to machine are put in pots with ... Testing And Inspection Of Heat Treatment The hard parts of the gear must be so hard that a new mill f... Sulphur SULPHUR is another element (symbol S) which is always found i... Detrimental Elements Sulphur and phosphorus are two elements known to be detrimen... Impact Tests Impact tests are of considerable importance as an indication ... Standard Analysis The selection of a standard analysis by the manufacturer is t... Quality And Structure The quality of high-speed steel is dependent to a very great ... Ebbw Vale And The Bessemer Process After his British Association address in August 1856, Besseme... |
Air-hardening SteelsCategory: FURNACES These steels are recommended for boring, turning and planing where the cost of high-speed seems excessive. They are also recommended for hard wood knives, for roughing and finishing bronze and brass, and for hot bolt forging dies. This steel cannot be cut or punched cold but can be shaped and ground on abrasive wheels of various kinds. It should be heated slowly and evenly for forging and kept as evenly heated at a bright red as possible. It should not be forged after it cools to a dark red. After the tool is made, heat it again to a bright red and lay it down to cool in a dry place or it can be cooled in a cold, dry air blast. Water must be kept away from it while it is hot. Next: Typical Oil-fired Furnaces Previous: Hardening High-speed Steel
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