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Steel MakingHeat Treatment Of Gear BlanksThis section is based on a paper read before the American Gea... Hardening Steel is hardened by quenching from above the upper critical.... Steel Can Be Worked Cold As noted above, steel can be worked cold, as in the case of ... Annealing Of Rifle Components At Springfield Armory In general, all forgings of the components of the arms manufa... Hardening The forgings can be hardened by cooling in still air or quen... Preventing Cracks In Hardening The blacksmith in the small shop, where equipment is usually ... Oil-hardening Steel Heat slowly and uniformly to 1,450 deg.F. and forge thorough... Carbon In Tool Steel Carbon tool steel, or tool steel as it is commonly called, us... Steel Worked In Austenitic State As a general rule steel should be worked when it is in the a... Effect Of A Small Amount Of Copper In Medium-carbon Steel This shows the result of tests by C. R. Hayward and A. B. Joh... Flange Shields For Furnaces Such portable flame shields as the one illustrated in Fig. 1... Composition And Properties Of Steel It is a remarkable fact that one can look through a dozen tex... A Satisfactory Luting Mixture A mixture of fireclay and sand will be found very satisfactor... Steel For Chisels And Punches The highest grades of carbon or tempering steels are to be re... Preventing Decarbonization Of Tool Steel It is especially important to prevent decarbonization in such... Carbon Tool Steel Heat to a bright red, about 1,500 to 1,550 deg.F. Do not ham... Phosphorus PHOSPHORUS is an element (symbol P) which enters the metal fr... High Speed Steel For centuries the secret art of making tool steel was handed ... Silicon SILICON is a very widespread element (symbol Si), being an es... Quenching It is considered good practice to quench alloy steels from th... |
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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