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
... red hot , does not , according to their idea , injure the steel in the least , but in reality it makes a vast amount of difference in the strength of the piece . In some shops a man is called a successful hard- ener if he is fortunate ...
... red hot , does not , according to their idea , injure the steel in the least , but in reality it makes a vast amount of difference in the strength of the piece . In some shops a man is called a successful hard- ener if he is fortunate ...
Сторінка 13
... red hot and plunged in water , will harden , but it is necessary to know how hot it must be heated in order that satisfactory results may follow . We should thoroughly understand the action of too great an amount of heat on the ...
... red hot and plunged in water , will harden , but it is necessary to know how hot it must be heated in order that satisfactory results may follow . We should thoroughly understand the action of too great an amount of heat on the ...
Сторінка 14
... red hot . This means a change in temperature of about 1,000 degrees , and the effect of heat on steel is to expand it , while the opposite effect is accomplished when it is cooled . The more rapidly it is cooled the harder it will be ...
... red hot . This means a change in temperature of about 1,000 degrees , and the effect of heat on steel is to expand it , while the opposite effect is accomplished when it is cooled . The more rapidly it is cooled the harder it will be ...
Сторінка 22
... red hot and plunging into some cooling bath . The more quickly the heat is extracted the harder the piece will be . Tool steel has certain peculiarities which must be understood if one would be a successful hardener . The outside ...
... red hot and plunging into some cooling bath . The more quickly the heat is extracted the harder the piece will be . Tool steel has certain peculiarities which must be understood if one would be a successful hardener . The outside ...
Сторінка 26
... red hot and straightened . If it were straightened cold , then finished to size and hardened , it would be almost sure to spring . The writer has seen men at work making blanking dies for punching press work who , when they made the ...
... red hot and straightened . If it were straightened cold , then finished to size and hardened , it would be almost sure to spring . The writer has seen men at work making blanking dies for punching press work who , when they made 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