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 41
... bottom will heat more quickly than those at the top , so it is advisable when a tube in the bottom row is taken from the furnace to fill its place with one from one of the top rows . The tubes as they are filled may be placed in the top ...
... bottom will heat more quickly than those at the top , so it is advisable when a tube in the bottom row is taken from the furnace to fill its place with one from one of the top rows . The tubes as they are filled may be placed in the top ...
Сторінка 49
... о TOP PLATE О CRUCIBLE FRAME B ASH BOX FIRE BOX PIECE OF FIRE BRICK BOTTOM PLATE SECTION 4 LEGS 1 ROUND IRON Figure 17. Coal , coke or charcoal furnace for lead heating . OUTER SHELL " Home - made " lead heating apparatus . used 49.
... о TOP PLATE О CRUCIBLE FRAME B ASH BOX FIRE BOX PIECE OF FIRE BRICK BOTTOM PLATE SECTION 4 LEGS 1 ROUND IRON Figure 17. Coal , coke or charcoal furnace for lead heating . OUTER SHELL " Home - made " lead heating apparatus . used 49.
Сторінка 50
... bottom of the ash box , to allow the grate to be turned in dumping the contents of the furnace . The interior of the furnace may be made of circular fire brick , which may be supported by the slab which forms the base or bottom of the ...
... bottom of the ash box , to allow the grate to be turned in dumping the contents of the furnace . The interior of the furnace may be made of circular fire brick , which may be supported by the slab which forms the base or bottom of the ...
Сторінка 73
... bottom and laying a piece of board a trifle larger than the work on them . Heat the pieces to be an- Work Figure 25 . An iron box filled with ashes for annealing between boards . nealed to the proper degree , lay them on the board , lay ...
... bottom and laying a piece of board a trifle larger than the work on them . Heat the pieces to be an- Work Figure 25 . An iron box filled with ashes for annealing between boards . nealed to the proper degree , lay them on the board , lay ...
Сторінка 75
... with powdered charcoal . It is necessary when annealing by this method to place one or two inches of charcoal in the bottom of the box before putting in any steel . Do not Box method of annealing . allow the pieces of steel 75.
... with powdered charcoal . It is necessary when annealing by this method to place one or two inches of charcoal in the bottom of the box before putting in any steel . Do not Box method of annealing . allow the pieces of steel 75.
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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