An Investigation of Ingots Teemed under Different Thermal and Physical Solidification Conditions and the Analysis of Metal Quality of the Hollow Forgings Produced

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Abstract:

Optical and electron microscopy are used in the paper to analyze the quality of the cast metal of a 1.53 ton ingot of steel 38ХН3МФАteemed with a cooling feeder head. In addition, the analysis of the metal of hollow forgings produced from ingots with “cooled” and thermally insulated feeders is performed. A metallographic study reveals that if the ingot top is cooled down, it results in an accelerated solidification throughout the entire mass of the ingot; in addition, the thermal centre shifts to the ingot central axial area.

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36-40

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November 2019

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© 2019 Trans Tech Publications Ltd. All Rights Reserved

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