Steel MakingTungstenTungsten, as an alloy in steel, has been known and used for a... A Chromium-cobalt Steel The Latrobe Steel Company make a high-speed steel without tun... Carburizing Material The simplest carburizing substance is charcoal. It is also th... Tensile Properties Strength of a metal is usually expressed in the number of pou... Manganese Manganese adds considerably to the tensile strength of steel,... Critical Points One of the most important means of investigating the properti... Using Illuminating Gas The choice of a carburizing furnace depends greatly on the fa... Heat-treating Equipment And Methods For Mass Production The heat-treating department of the Brown-Lipe-Chapin Company... Rate Of Absorption According to Guillet, the absorption of carbon is favored by ... Instructions For Working High-speed Steel Owing to the wide variations in the composition of high-speed... Optical System And Electrical Circuit Of The Leeds & Northrup Optical Pyrometer For extremely high temperature, the optical pyrometer is lar... The Leeds And Northrup Potentiometer System The potentiometer pyrometer system is both flexible and subst... The Effect Of Tempering On Water-quenched Gages The following information has been supplied by Automatic and ... Heat Treatment Of Gear Blanks This section is based on a paper read before the American Gea... Process Of Carburizing Carburizing imparts a shell of high-carbon content to a low-... Surface Carburizing Carburizing, commonly called case-hardening, is the art of pr... Pyrometers Armor plate makers sometimes use the copper ball or Siemens' ... Sulphur SULPHUR is another element (symbol S) which is always found i... Shrinking And Enlarging Work Steel can be shrunk or enlarged by proper heating and cooling... Hardening High-speed Steels We will now take up the matter of hardening high-speed steels... |
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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