Pacific service magazine . nes both from a stand-point of size and hourly demand is an annealing furnace in a railroad shop. The particular furnace is ten feet, one and one-half inches wide, fourteen feet, seven and one-half inches long and three feet high. It operates at an extreme temperature of 1900 deg. F. and has a maximum hourly gas consumption of 10,560 cubic feet. Steel plates one-half inch in thickness and weighing over 1800 pounds are heated to 1800 deg. F. intwelve minutes. The mostrecent furnace for the heat treatment ofmetal is one installed at the Mare Islandnavy yard. The furnac
Pacific service magazine . nes both from a stand-point of size and hourly demand is an annealing furnace in a railroad shop. The particular furnace is ten feet, one and one-half inches wide, fourteen feet, seven and one-half inches long and three feet high. It operates at an extreme temperature of 1900 deg. F. and has a maximum hourly gas consumption of 10,560 cubic feet. Steel plates one-half inch in thickness and weighing over 1800 pounds are heated to 1800 deg. F. intwelve minutes. The mostrecent furnace for the heat treatment ofmetal is one installed at the Mare Islandnavy yard. The furnace is a steel tankeight feet long, twelve inches wide and fourfeet deep, filled with a salt compound andheated with eight high-pressure gas burnersthermostatically controlled. The salt bathis operated at from 650 deg. F. to 950 in treating duraluminum, that new andremarkable metal having the weight ofaluminum and the strength of steel. In the melting of metals gas has a verywide field. Practically all newspapers melt. Battery of gas-fired core ovens at the Standard BrassCasting Companys plant in Oakland their type metal in gas-fired making storage batteries also use itfor melting the metal used in making thebattery plates. One of a number of brassfoundries has a direct gas-fired furnace witha capacity of twenty-four hundred poundsof brass at one charge. From this the fur-naces range down to less than 100 poundscapacity. Fundamentally, gas is used because by itsuse it is possible to obtain a better product,or a larger volume, or labor may be saved,or for any one of a greatnumber of reasons, all ofvv^hich finally resolve them-selves into a lower unitcost to the finished pro-duct. Referring again tothe tabulation of variousfuels given in the above,it is obvious that displac-ing but a small portion ofother fuels would increasethe industrial use of gastremendously. This dis-placement of liquid orsolid fuels is progressing,as cost analyses show thatthe point alw
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Keywords: ., bookcentury1900, bookdecade1910, bookidpacificservi, bookyear1912
