The American Steel Worker: A Twenty-five Years' Experience in the Selection, Annealing, Working, Hardening and Tempering of Various Kinds and Grades of SteelDerry-Collard Company, 1906 - 333 стор. |
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Сторінка 38
... Derry Collard Co. Muffle furnace for hardening . coal , as either coke or coal do not furnish a satisfactory means of heating under the circumstances mentioned . The grate should be made the size of the Types of muffle furnaces . inside ...
... Derry Collard Co. Muffle furnace for hardening . coal , as either coke or coal do not furnish a satisfactory means of heating under the circumstances mentioned . The grate should be made the size of the Types of muffle furnaces . inside ...
Сторінка 40
... Derry Collard Co. A " home - made ” furnace . pipe and one in the ash chamber door . By means of these dampers the draft can be regulated very nicely . This form of furnace works very nicely in heating dies and similar work . When small ...
... Derry Collard Co. A " home - made ” furnace . pipe and one in the ash chamber door . By means of these dampers the draft can be regulated very nicely . This form of furnace works very nicely in heating dies and similar work . When small ...
Сторінка 41
... Derry Collard Co. A " home - made " furnace for burning charcoal , coke or hard coal . shown as Fig . 9 , the other end being left open . A number of pieces of work may be placed in each tube and the tubes placed in the openings . The ...
... Derry Collard Co. A " home - made " furnace for burning charcoal , coke or hard coal . shown as Fig . 9 , the other end being left open . A number of pieces of work may be placed in each tube and the tubes placed in the openings . The ...
Сторінка 42
... Derry Collard Co. Figure 8 . A " home - made " furnace for heating small pieces . gradually and yet harden a large amount of work in a given time . The tubes should be turned occasionally in order to insure even heating and satisfactory ...
... Derry Collard Co. Figure 8 . A " home - made " furnace for heating small pieces . gradually and yet harden a large amount of work in a given time . The tubes should be turned occasionally in order to insure even heating and satisfactory ...
Сторінка 43
... Derry Collard Co. Figure 10. Gas blast for heating a few pieces . is possible by forming a cavity in the brick or making a small oven as shown in Fig . 11 to heat a much larger piece of work in an ordinary blow pipe than would otherwise ...
... Derry Collard Co. Figure 10. Gas blast for heating a few pieces . is possible by forming a cavity in the brick or making a small oven as shown in Fig . 11 to heat a much larger piece of work in an ordinary blow pipe than would otherwise ...
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allow annealing best results bottom brittle cast iron cent charcoal charred leather cold considered advisable cool counterbores crucible steel containing cutting tools cyanide Derry Collard Derry Collard Co dipped draw the temper drills excellent results Figure fire forging furnace gauges give grain grinding hammer hard hardened steel hardening box high carbon steel high speed steels hole hotter inch kettle lathe tool lead linseed oil machinery steel mandrels manner method milling cutters milling machine cutters mixture necessary to harden open hearth steel ordinary pack hardening packing material percentage of carbon phosphorus piece of steel pipe placed plate plunged portion possible proper punch punch press quenched raw bone reamer red heat refining heat removed screw screw threading shape shown in Fig similar tools soft spring surface tank taps teeth temper color temperature tion tongs tool steel uniform heat wire writer