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 9
... proper hardening . A manufacturer of a high grade tool steel , in con- versation with the writer , said , if he could have one per cent . of the value of steel in this country spoiled by improper hardening , he would not exchange his ...
... proper hardening . A manufacturer of a high grade tool steel , in con- versation with the writer , said , if he could have one per cent . of the value of steel in this country spoiled by improper hardening , he would not exchange his ...
Сторінка 11
... proper methods of its manipu- lation , are within the reach of all , there is no good reason why ignorance of a subject so interesting , and , at the same time of such vital importance to both manufacturer and mechanic , should be so ...
... proper methods of its manipu- lation , are within the reach of all , there is no good reason why ignorance of a subject so interesting , and , at the same time of such vital importance to both manufacturer and mechanic , should be so ...
Сторінка 12
... proper forms of furnaces and bath , so that the best results may be obtained . Suppose a micro- meter is left for some time in a room where the tem- perature is 40 degrees Fahr . , a piece of work is placed between the contact surfaces ...
... proper forms of furnaces and bath , so that the best results may be obtained . Suppose a micro- meter is left for some time in a room where the tem- perature is 40 degrees Fahr . , a piece of work is placed between the contact surfaces ...
Сторінка 23
... Proper and improper centering . Figure 3 . If a piece is of the decarbonizing surface all around . centered , as shown in Fig . 3 , the decarbonized surface will be entirely removed from one side of the piece and scarcely any of it ...
... Proper and improper centering . Figure 3 . If a piece is of the decarbonizing surface all around . centered , as shown in Fig . 3 , the decarbonized surface will be entirely removed from one side of the piece and scarcely any of it ...
Сторінка 24
... proper manner , the boy does not understand the nature of steel , and as a consequence , it is centered , as shown in Fig . 3 . Now , if the tool maker were given the job , he would readily see that it was centered wrong . But the ...
... proper manner , the boy does not understand the nature of steel , and as a consequence , it is centered , as shown in Fig . 3 . Now , if the tool maker were given the job , he would readily see that it was centered wrong . But the ...
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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