Notes on construction in mild steel: arranged for the use of junior draughtsmen in the architectural and engineering professions

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Longmans, Green and co., 1907 - Technology & Engineering - 448 pages
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Page 15 - Strips cut crosswise and lengthwise, 1^ inches wide, heated uniformly to a low cherry red and cooled in water of 82 Fahrenheit, must stand bending in a press to a curve of which the inner radius is one and a half times the thickness of the steel tested. The strips are all to be cut in a planing machine, and to have the sharp edges taken off.
Page 11 - The open-hearth process consists in melting pig-iron, mixed with more or less wrought-iron, steel, or similar iron products, by exposure to the direct action of the flame in a regenerative gas furnace, and converting the resultant bath into steel, the operation being so conducted that the final product is entirely fluid.
Page 3 - If any relation between composition and physical properties is established by experience, it is that of phosphorus in making steel brittle under shock; and it appears reasonably certain, though exact data sufficing to demonstrate it are not at hand, that phosphoric steels are liable to be very brittle under shock, even though they maybe tolerably ductile statically.
Page 1 - ... it may be accepted as true in soft steel. " It follows, therefore, that no limit should ever be placed to the carbon allowed in any structural material if a given tensile strength is specified. It is, of course, true that every increment of carbon increases the hardness, the brittleness under shock, and the susceptibility to crack under sudden cooling and heating, while it reduces the elongation and reduction of area; but the strength must be bought at a certain cost, and this cost is less in...
Page 4 - Xothing is better established than the fact that sulphur injures the rolling qualities of steel, causing it to crack and tear, and lessening its capacity to weld. This tendency can be overcome in some measure by the use of manganese and by care in heating, but this does not in the least disprove that the sulphur is at work, but simply shows that it is overpowered. The critical content at which the metal ceases to be malleable and weldable varies with every steel. It is lower with METALLURGY OF IRON...
Page 5 - This teaiing occurs almost entirely in the first passes of the ingot, so that it is of little importance to the engineer who is concerned only with perfect finished material. In the purest of soft steels containing not more than...

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