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 19
... require harden- ing in order to accomplish the result for which they are intended . Or , if they require hardening at all , it is simply a surface hardening , the interior of the piece being soft with a view to obtaining greater ...
... require harden- ing in order to accomplish the result for which they are intended . Or , if they require hardening at all , it is simply a surface hardening , the interior of the piece being soft with a view to obtaining greater ...
Сторінка 20
... require hardening in order to accomplish the desired result . Although the term " tool steel " is applied to steel intended to be made into cutting tools , there are many makes of this article , each make differing in some respects from ...
... require hardening in order to accomplish the desired result . Although the term " tool steel " is applied to steel intended to be made into cutting tools , there are many makes of this article , each make differing in some respects from ...
Сторінка 21
... requires careful treatment , and although it will stand more heat than steel of 11⁄2 per cent . carbon , it should not be heated hotter than a low red . Tool temper ( 14 per cent . carbon ) . A very useful temper for turning tools ...
... requires careful treatment , and although it will stand more heat than steel of 11⁄2 per cent . carbon , it should not be heated hotter than a low red . Tool temper ( 14 per cent . carbon ) . A very useful temper for turning tools ...
Сторінка 26
... 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 ruin it , or at least harm it . For this reason it is not advisable , generally speaking ...
... 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 ruin it , or at least harm it . For this reason it is not advisable , generally speaking ...
Сторінка 39
... a muffle furnace , one may be made to use either charcoal , coke , or hard coal as fuel by taking the one represented in Fig . 7 as a model , and changing the design to meet the require- “ Home - made ” mufe furnaces . ments . 39.
... a muffle furnace , one may be made to use either charcoal , coke , or hard coal as fuel by taking the one represented in Fig . 7 as a model , and changing the design to meet the require- “ Home - made ” mufe furnaces . ments . 39.
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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