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 12
... sufficiently so the contact points no longer touch the piece between them . Now , if a few degrees of heat will expand steel so it can be readily observed , it is apparent that a heat of 900 to 1,200 degrees Fahr . must cause the ...
... sufficiently so the contact points no longer touch the piece between them . Now , if a few degrees of heat will expand steel so it can be readily observed , it is apparent that a heat of 900 to 1,200 degrees Fahr . must cause the ...
Сторінка 23
... sufficiently . For sizes from 2 to 1 inch diameter , select stock to % inch larger . For sizes from 1 to 2 inches diameter , select stock from % to of an inch . For sizes above 2 inches , about 4 of an inch should be cut off . It is ...
... sufficiently . For sizes from 2 to 1 inch diameter , select stock to % inch larger . For sizes from 1 to 2 inches diameter , select stock from % to of an inch . For sizes above 2 inches , about 4 of an inch should be cut off . It is ...
Сторінка 36
... sufficiently large to heat the piece uniformly . It is always advisable when heating large pieces to use a fire of new coals if charcoal is used as fuel , as coals which have been used for some time are burned to the extent that the ...
... sufficiently large to heat the piece uniformly . It is always advisable when heating large pieces to use a fire of new coals if charcoal is used as fuel , as coals which have been used for some time are burned to the extent that the ...
Сторінка 39
... sufficient . Fig . 6 shows a furnace of the type mentioned , the dimensions depending on the size and character of the work to be heated . A damper should be placed in the smoke pipe in order to check the fire if there is danger of its ...
... sufficient . Fig . 6 shows a furnace of the type mentioned , the dimensions depending on the size and character of the work to be heated . A damper should be placed in the smoke pipe in order to check the fire if there is danger of its ...
Сторінка 44
... sufficiently for hardening by means of an ordinary gas jet or the flame of a spirit lamp , as shown in Fig . 14. This is an expensive method when work is heated in quantities , but answers very nicely for one or two pieces . When ...
... sufficiently for hardening by means of an ordinary gas jet or the flame of a spirit lamp , as shown in Fig . 14. This is an expensive method when work is heated in quantities , but answers very nicely for one or two pieces . When ...
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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