| "There was something very strange about William's death--very strange indeed!" sighed a melancholy man in the back of the van. It was the seedman's father, who had hitherto kept silence. "And what might that have been?" asked Mr Lackland... Read more of The Superstitious Man's Story at Scary Stories.ca |  InformationalPrivacy |
Steel MakingAnnealingANNEALING can be done by heating to temperatures ranging from... Phosphorus PHOSPHORUS is an element (symbol P) which enters the metal fr... Tempering Round Dies A number of circular dies of carbon tool steel for use in too... Pyrometry And Pyrometers A knowledge of the fundamental principles of pyrometry, or th... Tensile Properties Strength of a metal is usually expressed in the number of pou... Steel Worked In Austenitic State As a general rule steel should be worked when it is in the a... Steel For Chisels And Punches The highest grades of carbon or tempering steels are to be re... High Speed Steel For centuries the secret art of making tool steel was handed ... Properties Of Alloy Steels The following table shows the percentages of carbon, manganes... Annealing Of Rifle Components At Springfield Armory In general, all forgings of the components of the arms manufa... Care In Annealing Not only will benefits in machining be found by careful anne... Surface Carburizing Carburizing, commonly called case-hardening, is the art of pr... Correction For Cold-junction Errors The voltage generated by a thermo-couple of an electric pyrom... Effects Of Proper Annealing Proper annealing of low-carbon steels causes a complete solu... Carburizing Material The simplest carburizing substance is charcoal. It is also th... Tool Or Crucible Steel Crucible steel can be annealed either in muffled furnace or b... Carbon-steel Forgings Low-stressed, carbon-steel forgings include such parts as car... Restoring Overheated Steel The effect of heat treatment on overheated steel is shown gra... Silicon Silicon prevents, to a large extent, defects such as gas bubb... Steel Before The 1850's In spite of a rapid increase in the use of machines and the ... |
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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