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Steel MakingClassifications Of SteelAmong makers and sellers, carbon tool-steels are classed by g... Conclusions Martien was probably never a serious contender for the honor ... Process Of Carburizing Carburizing imparts a shell of high-carbon content to a low-... Heat Treatment Of Lathe Planer And Similar Tools FIRE.--For these tools a good fire is one made of hard foundr... Leeds And Northrup Optical Pyrometer The principles of this very popular method of measuring tempe... Bessemer Process The bessemer process consists of charging molten pig iron int... The Penetration Of Carbon Carburized mild steel is used to a great extent in the manufa... Heat Treatment Of Gear Blanks This section is based on a paper read before the American Gea... Annealing Of Rifle Components At Springfield Armory In general, all forgings of the components of the arms manufa... Carbon In Tool Steel Carbon tool steel, or tool steel as it is commonly called, us... Gas Consumption For Carburizing Although the advantages offered by the gas-fired furnace for ... Oil-hardening Steel Heat slowly and uniformly to 1,450 deg.F. and forge thorough... Annealing There is no mystery or secret about the proper annealing of d... Vanadium Vanadium has a very marked effect upon alloy steels rich in c... Annealing Of High-speed Steel For annealing high-speed steel, some makers recommend using g... The Electric Process The fourth method of manufacturing steel is by the electric f... Chrome-nickel Steel Forging heat of chrome-nickel steel depends very largely on ... Judging The Heat Of Steel While the use of a pyrometer is of course the only way to hav... Heat Treatment Of Milling Cutters Drills Reamers Etc THE FIRE.--Gas and electric furnaces designed for high heats ... Application To The Automotive Industry The information given on the various parts of the Liberty eng... |
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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