| Mississippi Federal Writers Slave Autobiographies Smith Hodges, Ex-Slave, Pike County FEC Mrs. W.F. Holmes [FANNY SMITH HODGES Berglundtown, Mississippi] Fanny Smith Hodges lives in Berglundtown, in the northern part of town, in the ... Read more of Fanny Smith Hodges at Martin Luther King.ca |  Informational.caPrivacy |
Steel MakingSuggestions For Handling High-speed SteelsThe following suggestions for handling high-speed steels are ... Temperature For Annealing Theoretically, annealing should be accomplished at a tempera... Carbon In Tool Steel Carbon tool steel, or tool steel as it is commonly called, us... Hardening High-speed Steels We will now take up the matter of hardening high-speed steels... The Quenching Tank The quenching tank is an important feature of apparatus in c... The Leeds And Northrup Potentiometer System The potentiometer pyrometer system is both flexible and subst... 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... Pyrometers Armor plate makers sometimes use the copper ball or Siemens' ... Furnace Data In order to give definite information concerning furnaces, fu... Carbon Tool Steel Heat to a bright red, about 1,500 to 1,550 deg.F. Do not ham... Oil-hardening Steel Heat slowly and uniformly to 1,450 deg.F. and forge thorough... Effects Of Proper Annealing Proper annealing of low-carbon steels causes a complete solu... Blending The Compound Essentially, this consists of the sturdy, power-driven separa... Steel For Chisels And Punches The highest grades of carbon or tempering steels are to be re... Gas Consumption For Carburizing Although the advantages offered by the gas-fired furnace for ... Testing And Inspection Of Heat Treatment The hard parts of the gear must be so hard that a new mill f... Conclusions Martien was probably never a serious contender for the honor ... A Satisfactory Luting Mixture A mixture of fireclay and sand will be found very satisfactor... Process Of Carburizing Carburizing imparts a shell of high-carbon content to a low-... Rate Of Cooling At the option of the manufacturer, the above treatment of gea... |
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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