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Steel MakingGearsThe material used for all gears on the Liberty engine was sel... Quenching Tool Steel To secure proper hardness, the cooling of quenching of steel ... Furnace Data In order to give definite information concerning furnaces, fu... Leeds And Northrup Optical Pyrometer The principles of this very popular method of measuring tempe... Placing Of Pyrometers When installing a pyrometer, care should be taken that it re... Mushet And Bessemer That Mushet was "used" by Ebbw Vale against Bessemer is, perh... Silicon SILICON is a very widespread element (symbol Si), being an es... Heating Of Manganese Steel Another form of heat-treating furnace is that which is used ... Annealing Method Forgings which are too hard to machine are put in pots with ... Hints For Tool Steel Users Do not hesitate to ask for information from the maker as to t... The Forging Of Steel So much depends upon the forging of steel that this operation... Robert Mushet Robert (Forester) Mushet (1811-1891), born in the Forest of D... The Effect The heating at 1,600 deg.F. gives the first heat treatment w... Using Illuminating Gas The choice of a carburizing furnace depends greatly on the fa... Optical System And Electrical Circuit Of The Leeds & Northrup Optical Pyrometer For extremely high temperature, the optical pyrometer is lar... High-chromium Or Rust-proof Steel High-chromium, or what is called stainless steel containing f... Carbon Tool Steel Heat to a bright red, about 1,500 to 1,550 deg.F. Do not ham... Effect Of Different Carburizing Material [Illustrations: FIGS. 33 to 37.] Each of these different p... Compensating Leads By the use of compensating leads, formed of the same materia... Heat Treatment Of Steel Heat treatment consists in heating and cooling metal at defin... |
Heating Of Manganese SteelCategory: FURNACES Another form of heat-treating furnace is that which is used for the heating of manganese and other alloy steels, which after having been brought to the proper heat are drawn from the furnace into an immediate quenching tank. With manganese steel in particular, the parts are so fragile and easily damaged while hot that it is frequent practice to have a sloping platform immediately in front of the furnace door down which the castings may slide into a tank below the floor level. Such a furnace with a quenching tank in front of its door is shown in Fig. 108. These tanks are covered with plates while charging the furnace and the cold castings are placed in a moderately cool furnace. Since some of these steels must not be charged into a furnace where the heat is extreme but should be brought up to their final heat gradually, there is little discomfort during the charging process. When quenching, however, from a temperature of 1,800 deg. to 1,900 deg., it is extremely unpleasant in front of the doors. The swinging shield is here adapted to give protection for this work. As will be noted it is hung a sufficient distance in front of the doors, that it may not interfere with the castings as they come from the furnace, and slide down into the tank. To facilitate the work, and avoid the necessity of working with the bars outside the edges of the shield, the slot-like hole is cut in the center of the shield, and through this the bars or rakes for dragging out the castings are easily inserted and manipulated. The advantage of such a swinging shield is that it may be readily moved from side to side, or forward and back as occasion requires. Next: Furnace Data Previous: Flange Shields For Furnaces
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