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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Результати 1-5 із 63
Сторінка 14
... soft for some little time after- ward . Now , the outside , being hardened , is practically inflexible , while the inside continues to change in structure until cold . This is especially true of pieces having teeth or projections on ...
... soft for some little time after- ward . Now , the outside , being hardened , is practically inflexible , while the inside continues to change in structure until cold . This is especially true of pieces having teeth or projections on ...
Сторінка 19
... soft with a view to obtaining greater strength . This class of steel is of a lower grade than tool steel . It is softer , works more easily , both in the operations of forging and machining , and can be safely heated to a higher ...
... soft with a view to obtaining greater strength . This class of steel is of a lower grade than tool steel . It is softer , works more easily , both in the operations of forging and machining , and can be safely heated to a higher ...
Сторінка 24
... soft on one side , the other side being hard enough . There is no one that can be blamed but the hardener , so he , poor fellow , has to " catch it . " It wouldn't be human nature to stand by and say nothing when blamed for something ...
... soft on one side , the other side being hard enough . There is no one that can be blamed but the hardener , so he , poor fellow , has to " catch it . " It wouldn't be human nature to stand by and say nothing when blamed for something ...
Сторінка 62
... soft line the entire length of the top side as it lay in the fire . It will also be found by experiment that round pieces are more liable to crack from uneven heating than pieces of almost any other shape ; neither will they safely ...
... soft line the entire length of the top side as it lay in the fire . It will also be found by experiment that round pieces are more liable to crack from uneven heating than pieces of almost any other shape ; neither will they safely ...
Сторінка 63
... air when red hot . If a tool made from one of these steels be heated in a manner that allows the air to come in contact with it , the outside becomes decarbonized . The indifference of some hardeners . and consequently is soft 63.
... air when red hot . If a tool made from one of these steels be heated in a manner that allows the air to come in contact with it , the outside becomes decarbonized . The indifference of some hardeners . and consequently is soft 63.
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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