This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1921 Excerpt: ...field a pole will be developed where the magnetic lines of force enter Permeability Soft iron Mild steel Hard steel.... Cobalt Nickel Heusler's Alloy Air Bismuth 2500 2000 250 225 200 33 1 0 99 the rod, and another where they leave the rod. Again, if there is a high-carbon spot in the rod, there will be a pole at each ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1921 Excerpt: ...field a pole will be developed where the magnetic lines of force enter Permeability Soft iron Mild steel Hard steel.... Cobalt Nickel Heusler's Alloy Air Bismuth 2500 2000 250 225 200 33 1 0 99 the rod, and another where they leave the rod. Again, if there is a high-carbon spot in the rod, there will be a pole at each end of the spot. Substances of magnetic permeability greater than unity are attracted by a magnet pole and are said to be paramagnetic. Substances of high permeability, such as iron, cobalt and nickel, are strongly attracted by a magnet pole and are said to be ferromagnetic. Substances of permeability less than unity are slightly repelled by a magnet pole and are said to be diamagnetic. Bismuth, phosphorus, antimony, water and many gases belong to this class. Substances of widely different magnetic permeabilities can be separated by means of magnets. In this manner magnetic iron ores are commercially separated from rock. A thin sheet of the pulverized ore falls in front of a number of magnets mm, Fig. 250. The materials of small permeability fall vertically, while the substances of high permeability are drawn to one side and fall into a separate receptacle. If steel be gradually heated the size of grain will become minimum when the decalescent point is reached (Art. 205). If now the temperature be either increased or maintained constant, the size of the grain will increase and the strength of the material will diminish. But if the specimen be quenched by plunging it into cold oil or water as soon as the decalescent point is attained, the hardness. the fineness of grain and the strength of the specimen will be rendered permanent. Steels containing from about 0.4 per cent to 0.9 per cent carbon cease being ferromagnetic and become paramagnetic a...
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
Choose your shipping method in Checkout. Costs may vary based on destination.
Seller's Description:
PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
