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Steel MakingAnnealing Of Rifle Components At Springfield ArmoryIn general, all forgings of the components of the arms manufa... Chromium Chromium when alloyed with steel, has the characteristic func... Classifications Of Steel Among makers and sellers, carbon tool-steels are classed by g... Piston Pin The piston pin on an aviation engine must possess maximum res... Sulphur Sulphur is another impurity and high sulphur is even a greate... Making Steel Balls Steel balls are made from rods or coils according to size, st... Carburizing By Gas The process of carburizing by gas, briefly mentioned on page ... Optical System And Electrical Circuit Of The Leeds & Northrup Optical Pyrometer For extremely high temperature, the optical pyrometer is lar... Annealing Of High-speed Steel For annealing high-speed steel, some makers recommend using g... Tool Or Crucible Steel Crucible steel can be annealed either in muffled furnace or b... Steel For Chisels And Punches The highest grades of carbon or tempering steels are to be re... Heating Of Manganese Steel Another form of heat-treating furnace is that which is used ... The Thermo-couple With the application of the thermo-couple, the measurement of... Connecting Rods The material used for all connecting rods on the Liberty engi... Application To The Automotive Industry The information given on the various parts of the Liberty eng... For Milling Cutters And Formed Tools FORGING.--Forge as before.--ANNEALING.--Place the steel in a ... Annealing In Bone Steel and cast iron may both be annealed in granulated bone. ... Hardening Operation Hardening a gear is accomplished as follows: The gear is tak... Liberty Motor Connecting Rods The requirements for materials for the Liberty motor connecti... Corrosion This steel like any other steel when distorted by cold worki... |
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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