| The names given to the various lines of a tooth on a gear-wheel are as follows: In Figure 233, A is the face and B the flank of a tooth, while C is the point, and D the root of the tooth; E is the height or depth, and F the breadth. P P is the ... Read more of Drawing Gear Wheels at How to Draw.ca |  Informational.caPrivacy |
Steel MakingHeat Treatment Of SteelHeat treatment consists in heating and cooling metal at defin... Nickel Nickel may be considered as the toughest among the non-rare a... The Thermo-couple With the application of the thermo-couple, the measurement of... The Forging Of Steel So much depends upon the forging of steel that this operation... Alloying Elements Commercial steels of even the simplest types are therefore p... Using Illuminating Gas The choice of a carburizing furnace depends greatly on the fa... Standard Analysis The selection of a standard analysis by the manufacturer is t... Chrome-nickel Steel Forging heat of chrome-nickel steel depends very largely on ... Nickel-chromium A combination of the characteristics of nickel and the charac... Lathe And Planer Tools TO FORGE.--Gently warm the steel to remove any chill is parti... 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... Knowing What Takes Place How are we to know if we have given a piece of steel the ver... Manganese MANGANESE is a metal much like iron. Its chemical symbol is M... Correction For Cold-junction Errors The voltage generated by a thermo-couple of an electric pyrom... Hardening High-speed Steels We will now take up the matter of hardening high-speed steels... Crucible Steel Crucible steel is still made by melting material in a clay or... Forging High-speed Steel Heat very slowly and carefully to from 1,800 to 2,000 deg.F.... Critical Points One of the most important means of investigating the properti... Silicon SILICON is a very widespread element (symbol Si), being an es... Introduction Of Carbon The matter to which these notes are primarily directed is the... |
Effects Of Proper AnnealingCategory: HEAT TREATMENT OF STEEL Proper annealing of low-carbon steels causes a complete solution or combination to take place between the ferrite and pearlite, producing a homogeneous mass of small grains of each, the grains of the pearlite being surrounded by grains of ferrite. A steel of this refinement will machine to good advantage, due to the fact that the cutting tool will at all times be in contact with metal of uniform composition. While the alternate bands of ferrite and pearlite are microscopically sized, it has been found that with a Gleason or Fellows gear-cutting machine that rough cutting can be traced to poorly annealed steels, having either a pronounced banded structure or a coarse granular structure. Next: Temperature For Annealing Previous: Process Of Carburizing
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