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Steel MakingClassifications Of SteelAmong makers and sellers, carbon tool-steels are classed by g... S A E Heat Treatments The Society of Automotive Engineers have adopted certain heat... Placing The Thermo-couples The following illustrations from the Taylor Instrument Compan... Carbon Tool Steel Heat to a bright red, about 1,500 to 1,550 deg.F. Do not ham... Quality And Structure The quality of high-speed steel is dependent to a very great ... Quenching Tool Steel To secure proper hardness, the cooling of quenching of steel ... Annealing To Relieve Internal Stresses Work quenched from a high temperature and not afterward tempe... Rate Of Cooling At the option of the manufacturer, the above treatment of gea... Crucible Steel Crucible steel is still made by melting material in a clay or... Effects Of Proper Annealing Proper annealing of low-carbon steels causes a complete solu... Gas Consumption For Carburizing Although the advantages offered by the gas-fired furnace for ... Typical Oil-fired Furnaces Several types of standard oil-fired furnaces are shown herew... Pyrometry And Pyrometers A knowledge of the fundamental principles of pyrometry, or th... Preventing Carburizing By Copper-plating Copper-plating has been found effective and must have a thick... Affinity Of Nickel Steel For Carbon The carbon- and nickel-steel gears are carburized separately... Suggestions For Handling High-speed Steels The following suggestions for handling high-speed steels are ... Heat Treatment Of Lathe Planer And Similar Tools FIRE.--For these tools a good fire is one made of hard foundr... Critical Points One of the most important means of investigating the properti... Correction For Cold-junction Errors The voltage generated by a thermo-couple of an electric pyrom... Liberty Motor Connecting Rods The requirements for materials for the Liberty motor connecti... |
The Penetration Of CarbonCategory: CASE-HARDENING OR SURFACE-CARBURIZING Carburized mild steel is used to a great extent in the manufacture of automobile and other parts which are likely to be subjected to rough usage. The strength and ability to withstand hard knocks depend to a very considerable degree on the thoroughness with which the carburizing process is conducted. Many automobile manufacturers have at one time or another passed through a period of unfortunate breakages, or have found that for a certain period the parts turned out of their hardening shops were not sufficiently hard to enable the rubbing surfaces to stand up against the pressure to which they were subjected. So many factors govern the success of hardening that often this succession of bad work has been actually overcome without those interested realizing what was the weak point in their system of treatment. As the question is one that can create a bad reputation for the product of any firm it is well to study the influential factors minutely. Next: Introduction Of Carbon Previous: Preparing Parts For Local Case-hardening
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