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 17
... extremely intelligent , capable men , but they have missed their calling , and missed it most decidedly , because a man to be a successful blacksmith or hard- ener , must have good powers of distinguishing colors and shades . There are ...
... extremely intelligent , capable men , but they have missed their calling , and missed it most decidedly , because a man to be a successful blacksmith or hard- ener , must have good powers of distinguishing colors and shades . There are ...
Сторінка 26
... extremely low heat ; another make will not harden in a satisfactory manner at that heat . It requires a higher heat in order to harden it . Now , if we were to heat the first steel as hot as we were obliged to heat the other , we should ...
... extremely low heat ; another make will not harden in a satisfactory manner at that heat . It requires a higher heat in order to harden it . Now , if we were to heat the first steel as hot as we were obliged to heat the other , we should ...
Сторінка 54
... extremely important that due consideration is given the subject of ventilation . Some means should be provided whereby pure air can be freely supplied without creating drafts , which would cause the operator , who is perspiring freely ...
... extremely important that due consideration is given the subject of ventilation . Some means should be provided whereby pure air can be freely supplied without creating drafts , which would cause the operator , who is perspiring freely ...
Сторінка 57
... extremely dark , but it must be uniform throughout the experiment . Now heat one piece until it shows somewhat red , yet a certain black is discernible in the center of the piece . Dip into the bath and work it around well ; leave until ...
... extremely dark , but it must be uniform throughout the experiment . Now heat one piece until it shows somewhat red , yet a certain black is discernible in the center of the piece . Dip into the bath and work it around well ; leave until ...
Сторінка 58
... , while the grain of No. 6 will be extremely coarse and the steel unfitted for anything but the scrap heap . It will pay any man who is desirous of learning to Temperatures for different steels . harden steel properly to try 58.
... , while the grain of No. 6 will be extremely coarse and the steel unfitted for anything but the scrap heap . It will pay any man who is desirous of learning to Temperatures for different steels . harden steel properly to try 58.
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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