| Mrs. Ogilvie of Drumquaigh had a poodle named Fanti. Her family, or at least those who lived with her, were her son, the laird, and three daughters. Of these the two younger, at a certain recent date, were paying a short visit to a neighbouri... Read more of The Dog Fanti at Scary Stories.ca |  InformationalPrivacy |
Steel MakingComposition Of Transmission-gear SteelIf the nickel content of this steel is eliminated, and the pe... Making Steel Balls Steel balls are made from rods or coils according to size, st... Take Time For Hardening Uneven heating and poor quenching has caused loss of many ve... Lathe And Planer Tools FORGING.--Gently warm the steel to remove any chill, is parti... An Automatic Temperature Control Pyrometer Automatic temperature control instruments are similar to the ... Vanadium Vanadium has a very marked effect upon alloy steels rich in c... Alloying Elements Commercial steels of even the simplest types are therefore p... Carbon-steel Forgings Low-stressed, carbon-steel forgings include such parts as car... The Effect Of Tempering On Water-quenched Gages The following information has been supplied by Automatic and ... Shrinking And Enlarging Work Steel can be shrunk or enlarged by proper heating and cooling... Pickling The Forgings The forgings were then pickled in a hot solution of either ni... The Thermo-couple With the application of the thermo-couple, the measurement of... A Satisfactory Luting Mixture A mixture of fireclay and sand will be found very satisfactor... Restoring Overheated Steel The effect of heat treatment on overheated steel is shown gra... Furnace Data In order to give definite information concerning furnaces, fu... Heating Although it is possible to work steels cold, to an extent de... Tool Or Crucible Steel Crucible steel can be annealed either in muffled furnace or b... Short Method Of Treatment In the new method, the packed pots are run into the case-har... Surface Carburizing Carburizing, commonly called case-hardening, is the art of pr... The Penetration Of Carbon Carburized mild steel is used to a great extent in the manufa... |
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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