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 11
... of cracking , yet gives it the amount of hardness necessary , in order that it may do the amount of work expected of it . A study of the effects of expansion and contraction Expansive properties of steel . of steel in the fire II.
... of cracking , yet gives it the amount of hardness necessary , in order that it may do the amount of work expected of it . A study of the effects of expansion and contraction Expansive properties of steel . of steel in the fire II.
Сторінка 12
... fire and baths is necessary in order to select the 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 ...
... fire and baths is necessary in order to select the 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 ...
Сторінка 18
... fire he is to use , and the bath in which the steel is to be quenched after it is heated . His spare moments are not spent hanging around street corners , or saloons , but in reading and studying such books and mechanical journals as ...
... fire he is to use , and the bath in which the steel is to be quenched after it is heated . His spare moments are not spent hanging around street corners , or saloons , but in reading and studying such books and mechanical journals as ...
Сторінка 35
... fire and the location of the piece of work in relation to the blast inlet . It is always advisable to build a fire large and high enough so that the portion of the piece being heated will be covered to a considerable depth by the coals ...
... fire and the location of the piece of work in relation to the blast inlet . It is always advisable to build a fire large and high enough so that the portion of the piece being heated will be covered to a considerable depth by the coals ...
Сторінка 36
... fire should be built , as a low fire in a forge having a tuyère - blast inlet of the ordinary size would not be sufficiently large to heat the piece uniformly . It is always advisable when heating large pieces to use a fire of new coals ...
... fire should be built , as a low fire in a forge having a tuyère - blast inlet of the ordinary size would not be sufficiently large to heat the piece uniformly . It is always advisable when heating large pieces to use a fire of new coals ...
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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