Steel MakingCarburizing Low-carbon SleevesLow-carbon sleeves are carburized and pushed on malleable-ir... Care In Annealing Not only will benefits in machining be found by careful anne... Steel Worked In Austenitic State As a general rule steel should be worked when it is in the a... Instructions For Working High-speed Steel Owing to the wide variations in the composition of high-speed... Tungsten Tungsten, as an alloy in steel, has been known and used for a... Shrinking And Enlarging Work Steel can be shrunk or enlarged by proper heating and cooling... Hardness Testing The word hardness is used to express various properties of me... A Satisfactory Luting Mixture A mixture of fireclay and sand will be found very satisfactor... Connecting Rods The material used for all connecting rods on the Liberty engi... Pickling The Forgings The forgings were then pickled in a hot solution of either ni... Silicon Silicon prevents, to a large extent, defects such as gas bubb... Properties Of Alloy Steels The following table shows the percentages of carbon, manganes... Hardening Carbon Steel For Tools For years the toolmaker had full sway in regard to make of st... Surface Carburizing Carburizing, commonly called case-hardening, is the art of pr... Corrosion This steel like any other steel when distorted by cold worki... The Effect Of Tempering On Water-quenched Gages The following information has been supplied by Automatic and ... Alloying Elements Commercial steels of even the simplest types are therefore p... Case-hardening Treatments For Various Steels Plain water, salt water and linseed oil are the three most co... 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... |
Carburizing By GasCategory: CASE-HARDENING OR SURFACE-CARBURIZING The process of carburizing by gas, briefly mentioned on page 88, consists of having a slowly revolving, properly heated, cylindrical retort into which illuminating gas (a mixture of various hydrocarbons) is continuously injected under pressure. The spent gases are vented to insure the greatest speed in carbonizing. The work is constantly and uniformly exposed to a clean carbonizing atmosphere instead of partially spent carbonaceous solids which may give off very complex compounds of phosphorus, sulphur, carbon and nitrogen. Originally this process was thought to require a gas generator but it has been discovered that city gas works all right. The gas consists of vapors derived from petroleum or bituminous coal. Sometimes the gas supply is diluted by air, to reduce the speed of carburization and increase the depth. Next: Preventing Carburizing By Copper-plating Previous: Case-hardening Treatments For Various Steels
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