| The caller's eye had caught the photograph of Tommie Billups, standing on the desk of Mr. Billups. "That your boy, Billups?" he asked. "Yes," said Billups, "he's a sophomore up at Binkton College." "Looks intellectual rather than athle... Read more of ATHLETES at Free Jokes.ca |  InformationalPrivacy |
Steel MakingShrinking And Enlarging WorkSteel can be shrunk or enlarged by proper heating and cooling... Hints For Tool Steel Users Do not hesitate to ask for information from the maker as to t... Tensile Properties Strength of a metal is usually expressed in the number of pou... Lathe And Planer Tools TO FORGE.--Gently warm the steel to remove any chill is parti... Vanadium Vanadium has a very marked effect upon alloy steels rich in c... Composition Of Transmission-gear Steel If the nickel content of this steel is eliminated, and the pe... Double Annealing Water annealing consists in heating the piece, allowing it to... Rate Of Absorption According to Guillet, the absorption of carbon is favored by ... Hardening High-speed Steels We will now take up the matter of hardening high-speed steels... The Forging Of Steel So much depends upon the forging of steel that this operation... Chrome-nickel Steel Forging heat of chrome-nickel steel depends very largely on ... Effect Of Different Carburizing Material [Illustrations: FIGS. 33 to 37.] Each of these different p... Annealing Of High-speed Steel For annealing high-speed steel, some makers recommend using g... Blending The Compound Essentially, this consists of the sturdy, power-driven separa... Testing And Inspection Of Heat Treatment The hard parts of the gear must be so hard that a new mill f... Hardening The forgings can be hardened by cooling in still air or quen... Annealing There is no mystery or secret about the proper annealing of d... S A E Heat Treatments The Society of Automotive Engineers have adopted certain heat... Tempering Colors On Carbon Steels Opinions differ as to the temperature which is indicated by t... The Effect The heating at 1,600 deg.F. gives the first heat treatment w... |
Non-shrinking Oil-hardening SteelsCategory: ALLOYS AND THEIR EFFECT UPON STEEL Certain steels have a very low rate of expansion and contraction in hardening and are very desirable for test plugs, gages, punches and dies, for milling cutters, taps, reamers, hard steel bushings and similar work. It is recommended that for forging these steels it be heated slowly and uniformly to a bright red, but not in a direct flame or blast. Harden at a dull red heat, about 1,300 deg.F. A clean coal or coke fire, or a good muffle-gas furnace will give best results. Fish oil is good for quenching although in some cases warm water will give excellent results. The steel should be kept moving in the bath until perfectly cold. Heated and cooled in this way the steel is very tough, takes a good cutting edge and has very little expansion or contraction which makes it desirable for long taps where the accuracy of lead is important. The composition of these steels is as follows: Per cent Manganese 1.40 to 1.60 Carbon 0.80 to 0.90 Vanadium 0.20 to 0.25 Next: Effect Of A Small Amount Of Copper In Medium-carbon Steel Previous: Properties Of Alloy Steels
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