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Steel MakingHeavy Forging PracticeIn heavy forging practice where the metal is being worked at... Compensating Leads By the use of compensating leads, formed of the same materia... Tool Or Crucible Steel Crucible steel can be annealed either in muffled furnace or b... Effects Of Proper Annealing Proper annealing of low-carbon steels causes a complete solu... Rate Of Cooling At the option of the manufacturer, the above treatment of gea... Steel Can Be Worked Cold As noted above, steel can be worked cold, as in the case of ... Restoring Overheated Steel The effect of heat treatment on overheated steel is shown gra... Making Steel Balls Steel balls are made from rods or coils according to size, st... Liberty Motor Connecting Rods The requirements for materials for the Liberty motor connecti... Typical Oil-fired Furnaces Several types of standard oil-fired furnaces are shown herew... Sulphur SULPHUR is another element (symbol S) which is always found i... Leeds And Northrup Optical Pyrometer The principles of this very popular method of measuring tempe... Using Illuminating Gas The choice of a carburizing furnace depends greatly on the fa... Fatigue Tests It has been known for fifty years that a beam or rod would fa... A Satisfactory Luting Mixture A mixture of fireclay and sand will be found very satisfactor... Case-hardening Treatments For Various Steels Plain water, salt water and linseed oil are the three most co... Heat Treatment Of Axles Parts of this general type should be heat-treated to show the... Separating The Work From The Compound During the pulling of the heat, the pots are dumped upon a ca... S A E Heat Treatments The Society of Automotive Engineers have adopted certain heat... For Milling Cutters And Formed Tools FORGING.--Forge as before.--ANNEALING.--Place the steel in a ... |
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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