| James ordered a fishing rod, priced at $3.56. Unfortunately, James is an Eskimo who lives in a very remote part of Greenland and the import rules there forbid any package longer than 4 feet to be imported. The fishing rod was 4 feet and 1 inch, just ... Read more of Fishing Rod at Free Jokes.ca |  Informational.caPrivacy |
Steel MakingManganeseMANGANESE is a metal much like iron. Its chemical symbol is M... Heavy Forging Practice In heavy forging practice where the metal is being worked at... Tensile Properties Strength of a metal is usually expressed in the number of pou... Composition And Properties Of Steel It is a remarkable fact that one can look through a dozen tex... Carbon In Tool Steel Carbon tool steel, or tool steel as it is commonly called, us... The Leeds And Northrup Potentiometer System The potentiometer pyrometer system is both flexible and subst... Annealing In Bone Steel and cast iron may both be annealed in granulated bone. ... Application To The Automotive Industry The information given on the various parts of the Liberty eng... Tool Or Crucible Steel Crucible steel can be annealed either in muffled furnace or b... Pyrometers For Molten Metal Pyrometers for molten metal are connected to portable thermoc... Preventing Carburizing By Copper-plating Copper-plating has been found effective and must have a thick... Furnace Data In order to give definite information concerning furnaces, fu... Instructions For Working High-speed Steel Owing to the wide variations in the composition of high-speed... Corrosion This steel like any other steel when distorted by cold worki... Non-shrinking Oil-hardening Steels Certain steels have a very low rate of expansion and contract... 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... Air-hardening Steels These steels are recommended for boring, turning and planing... High Speed Steel For centuries the secret art of making tool steel was handed ... High-carbon Machinery Steel The carbon content of this steel is above 30 points and is ha... |
The EffectCategory: HEAT TREATMENT OF STEEL The heating at 1,600 deg.F. gives the first heat treatment which refines the core, which under the former high heat (1,700 deg.F.) was rendered coarsely crystalline. All the gears, including the scrap gears, are quenched direct from the pot in this manner. The gears then go to the reheating furnaces, situated in front of a battery of Gleason quenching machines. These furnaces accommodate from 12 to 16 crown gears. The carbon-steel gears are heated in a reducing atmosphere to about 1,425 deg.F. (depending on the carbon content) placed in the dies in the Gleason quenching machine, and quenched between dies in mineral oil at less than 100 deg.F. The test gear receives exactly the same treatment as the others and is then broken, giving a record of the condition of both case and core. Next: Affinity Of Nickel Steel For Carbon Previous: Short Method Of Treatment
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