Journal of the United States Association of Charcoal Iron Workers, Bände 7-8

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Seite 200 - Provided, That all iron in slabs, blooms, loops, or other forms less finished than iron in bars, and more advanced than pig iron...
Seite 200 - Siemens-Martin, or open-hearth process, or by the equivalent of either, or by the combination of two or more of the processes or their equivalents, or by any fusion or other process which produces from iron or its ores a metal either granular or fibrous in structure, which is cast and malleable, excepting what is known as malleable iron castings, shall be classed and denominated as steel.
Seite 200 - Boiler or other plate iron, sheared or unsheared, skelp iron, sheared or rolled in grooves, and sheet iron, common or...
Seite 336 - ... or three weeks), before cutting to size. With conifers this is a good practice at any season, and if it can be done, all winter-felled trees should be left lying to leaf out in spring, by which most of the sap is worked out and evaporated.
Seite 200 - All metal produced from iron or its ores, which is cast and malleable, of whatever description or form, without regard to the percentage of carbon contained therein, whether produced by cementation, or converted, cast, or made from iron or its ores, by the crucible, Bessemer...
Seite 124 - ... 1. Heat alone, without access of air, can remove, at best, only one-half of the sulphur present. 2. Atmospheric oxygen is absolutely necessary for a proper desulphurization. 3. Even at a low heat, ore is properly desulphurized if air can gain access freely to the FeS2 in it. 4. Sulphate of iron can be decomposed by heat equally well with or without air. 5. In order that the residuum...
Seite 201 - Manufactures, articles or wares not specially enumerated or provided for, composed wholly or in part of iron or steel, and whether wholly or partly manufactured, thirty per cent ad valorem . . . 30 pc Vehicles.
Seite 77 - The latter forge all the dahs ( ' native hatchets ' ) used by themselves and their neighbors in the Hotha valley ; and they annually resort to Bhamo, and the villages in the Kakhyen hills, for the purpose of manufacturing them. Their bellows are of the most primitive stamp, consisting of two segments of bamboo, about four inches in diameter and five feet long, set vertically, forming the cylinders, which are open above and closed below, except by two small bamboo tubes, which converge and meet at...
Seite 338 - One barrel of coal-tar ($3 to $4 per barrel) will cover 300 posts. Wood-tar is not serviceable because it does not dry. Oil paints are next in value. Boiled linseed oil or any other drying vegetable — not animal — oils, are used with lead or any other body (like pulverized charcoal) to give substance. Immersion in crude petroleum is also recommended. Charring of those parts which come...
Seite 317 - Knowledge before — a discovery that there are more things in heaven and earth than are dreamed of in our philosophy.

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