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Steel MakingThe Electric ProcessThe fourth method of manufacturing steel is by the electric f... Annealing Of High-speed Steel For annealing high-speed steel, some makers recommend using g... Composition Of Transmission-gear Steel If the nickel content of this steel is eliminated, and the pe... Manganese Manganese adds considerably to the tensile strength of steel,... Heat Treatment Of Milling Cutters Drills Reamers Etc THE FIRE.--Gas and electric furnaces designed for high heats ... Forging High-speed Steel Heat very slowly and carefully to from 1,800 to 2,000 deg.F.... Application To The Automotive Industry The information given on the various parts of the Liberty eng... Air-hardening Steels These steels are recommended for boring, turning and planing... Annealing Of Rifle Components At Springfield Armory In general, all forgings of the components of the arms manufa... Shrinking And Enlarging Work Steel can be shrunk or enlarged by proper heating and cooling... Hardening The forgings can be hardened by cooling in still air or quen... Brown Automatic Signaling Pyrometer In large heat-treating plants it has been customary to mainta... Restoring Overheated Steel The effect of heat treatment on overheated steel is shown gra... Effect Of Different Carburizing Material [Illustrations: FIGS. 33 to 37.] Each of these different p... Phosphorus Phosphorus is one of the impurities in steel, and it has been... Open Hearth Process The open hearth furnace consists of a big brick room with a l... Quenching The Work In some operations case-hardened work is quenched from the bo... The Theory Of Tempering Steel that has been hardened is generally harder and more br... Annealing ANNEALING can be done by heating to temperatures ranging from... Annealing There is no mystery or secret about the proper annealing of d... |
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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