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
... furnaces and bath , so that the best results may be obtained . Suppose a micro- meter is left for some time in a room where the tem- perature is 40 degrees Fahr . , a piece of work is placed between the contact surfaces , as shown in ...
... furnaces and bath , so that the best results may be obtained . Suppose a micro- meter is left for some time in a room where the tem- perature is 40 degrees Fahr . , a piece of work is placed between the contact surfaces , as shown in ...
Сторінка 34
... furnace , even though it were known that the work could be done more cheaply per piece , because the limited number of pieces would not warrant the extra outlay of money for equipment . On the other hand , if work was to be done in ...
... furnace , even though it were known that the work could be done more cheaply per piece , because the limited number of pieces would not warrant the extra outlay of money for equipment . On the other hand , if work was to be done in ...
Сторінка 36
... face cracks if heated for hardening in a charcoal fire . But from experiments , it can , I think , be truthfully claimed that a piece of 1.5 per cent . carbon steel will The use of muffle furnaces . not be as hard 36.
... face cracks if heated for hardening in a charcoal fire . But from experiments , it can , I think , be truthfully claimed that a piece of 1.5 per cent . carbon steel will The use of muffle furnaces . not be as hard 36.
Сторінка 37
... furnace may be used . desired result , the article If many pieces are to be hardened , it is advisable to procure a furnace especially adapted to the class of work . The neatest , most easily managed furnace , and the one which gives as ...
... furnace may be used . desired result , the article If many pieces are to be hardened , it is advisable to procure a furnace especially adapted to the class of work . The neatest , most easily managed furnace , and the one which gives as ...
Сторінка 38
... furnace of this description and one is to be made on the premises , it is possible to make a very satisfac- tory furnace quite cheaply . If large or long pieces are to be heated and a furnace is to ... furnaces . inside of the furnace , 38.
... furnace of this description and one is to be made on the premises , it is possible to make a very satisfac- tory furnace quite cheaply . If large or long pieces are to be heated and a furnace is to ... furnaces . inside of the furnace , 38.
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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