Industrial World: Published ... in the Interest of Iron, Steel, Coke and Allied Industries, 78. ciltNational Iron and Steel Publishing Company, 1906 |
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Sayfa 474 - It is a text-book upon the subject, and gives a brief sketch of the history of the development of the theories connected with the growth of the subject, and a large amount of experimental matter. Much of the analysis in regard to the changes of form resulting from stresses within the elastic limit, involves the Calculus. An English reviewer of the work says : " It is equal in grade to Rankine's work.
Sayfa 401 - Pig iron can be produced on a commercial scale at a price to compete with the blast furnace only when electric energy is very cheap and fuel very dear. On the basis taken in this report with electric energy at $10 per estimated horsepower year and coke at $7 per ton, the cost of production is approximately the same as the cost of producing pig iron in a modern blast furnace.
Sayfa 506 - II., — a treatise on the transmission and modification of motion and the construction of mechanical movements, for the use of draughtsmen, machinists, and students of mechanical engineering, in which the laws governing the motions and various parts of mechanics, as affected by their forms and modes of connection, are...
Sayfa 98 - I employ the pressure producer to force air or combustible gases into a furnace into which there may or may not be introduced other fuel (liquid or solid). From the furnace, the products of combustion can be led in a heated state to the multiple motor which they will actuate. Conveniently, the pressure producer and multiple motor can be mounted on the same shaft, the former to be driven by the latter; but I do not confine myself to this arrangement of parts. In some cases I employ water or other...
Sayfa 35 - F., on the attainment of which the cutter should be immediately withdrawn and plunged in cold oil. Of course there are various other ways of tempering, a good method being by means of a specially arranged gas-and-air stove into which the articles to be tempered are placed, and the stove then heated up to a temperature of from 500° F.
Sayfa 477 - The total world's supply of iron ore now known, given as 10,000,000.000 tons by Tornebohm, will be exhausted in about fifty years. If the total be correct, about one-fourth of the world's known reserves have been used to the present time. It is argued that the calculated rate of increase is not improbable because of the increased rate per capita of the countries now using iron, because of the normal increase of the population of these countries and because of the extension of the uses of iron through...
Sayfa 125 - For most industrial purposes alcohol is used in Germany duty free, after having been "denaturized" or rendered unfit for drinking purposes by admixture, in presence of a Government official, with a prescribed percentage or proportion of one or more of several different substances prescribed in the very elaborate statute which governs the complicated subject in Germany. There are two general classes or degrees...
Sayfa 182 - Comparative tests indicate that different stones in order of their value for concrete are approximately as follows: (1) Trap; (2) Granite: (3) Gravel; (4) Marble; (5) Limestone; (6) Slag; (7) Sandstone; (8) Slate; (9) Shale; (10) Cinders.
Sayfa 42 - Heat to boiling and add dilute ammonia (0.96 sp. gr.) carefully to the solution of the sample until a slight permanent precipitate forms. Heat to boiling and add 10 cc. of a 10 per cent. solution of oxalic acid. Stir until the oxides of iron and aluminum are entirely dissolved and only a slight precipitate of calcium oxalate remains. Now add 200 cc. of boiling water and sufficient (20 cc.) saturated solution of ammonium oxalate to precipitate the lime. Boil and...
Sayfa 401 - Pig Iron can be produced on a commercial scale at a price to compete with the blast furnace only when electric energy is very cheap and fuel very dear. On the basis taken In this report, with electric energy at $10 per EHP year, and coke at $7 per ton, the cost of production is approximately the same as the cost of producing pig Iron In a modern blast furnace.