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 7
... machine shop work , has taught the writer that much more depends on the condition of the various cutting tools used , than mechanics in general realize . The various machines used in working iron and steel to shape have been improved ...
... machine shop work , has taught the writer that much more depends on the condition of the various cutting tools used , than mechanics in general realize . The various machines used in working iron and steel to shape have been improved ...
Сторінка 8
... machine were bought and set up in a shop , and it was found that the fixtures formerly used in holding the pieces of work were not strong enough to hold them when the new machine was taking the heaviest cut possible , heavier fixtures ...
... machine were bought and set up in a shop , and it was found that the fixtures formerly used in holding the pieces of work were not strong enough to hold them when the new machine was taking the heaviest cut possible , heavier fixtures ...
Сторінка 9
... machine or machines stand idle waiting for another one to be made , many times represents a greater loss than the money value of the tool . This is especially true where the time given to complete the job is limited . If a tool is ...
... machine or machines stand idle waiting for another one to be made , many times represents a greater loss than the money value of the tool . This is especially true where the time given to complete the job is limited . If a tool is ...
Сторінка 10
... machine once in twenty working hours to sharpen the cutter , milling in the meantime five hun- dred pieces . A ... machine increased many fold , but the expense of grinding , and the necessary delay incident to stopping the machine ...
... machine once in twenty working hours to sharpen the cutter , milling in the meantime five hun- dred pieces . A ... machine increased many fold , but the expense of grinding , and the necessary delay incident to stopping the machine ...
Сторінка 13
... machine shop knows that steel heated 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 ...
... machine shop knows that steel heated 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 ...
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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