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Differential Magnetic Method of Nondestructive Testing and Phase Analysis

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Abstract

In tests of roller-bearing, tool, and other sorts of alloyed steels, two magnetic char-acteristics must be measured in nondestructive tests of quenched structures, namely, the saturation magnetization and coercive force. In industrial conditions, a differential method is used in measuring these parameters with the help of an instrument built around an H-shaped applied electromagnet. The paper considers utilization of this magnet in nondestructive measurements of hardness of bearing components manufactured from the ShKh15, ShKh15SG, and 95Kh18 steels, pump elements from the ShKh15 steel, and components manufactured by sintering. A technique for estimating the content of residual austenite in the mentioned sorts of steel and martensite in steels of transitional sorts, in particular, Kh16N6, is described.

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  1. Institute of Metal Physics, Ural Division, Russian Academy of Sciences, Yekaterinburg, Russia

    G. V. Bida

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Bida, G.V. Differential Magnetic Method of Nondestructive Testing and Phase Analysis. Russian Journal of Nondestructive Testing 38, 21–35 (2002). https://doi.org/10.1023/A:1020188000822

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