Process for the production of semi-finished articles of hard steels using a continuous casting operation
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United States of America Patent
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Oct 14, 1986
Grant Date -
N/A
app pub date -
Aug 6, 1981
filing date -
Aug 6, 1981
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention is directed to a continuous casting process for the production of semi-finished articles or blanks of hard steels such as bars, wires or tubes having a carbon content higher than 0.75%. In this process, the blank obtained by continuous casting is submitted to a secondary cooling under the mold, cut and within three minutes after cutting, introduced into a reheating furnace in which its temperature is brought to a level slightly lower than the solidus temperature, maintained for a short period, and finally elongated in the hot condition. In a preferred embodiment, the liquid steel is stirred during the continuous casting operation by means of magnetic fields induced in the steel by electromagnetic coils disposed around the blank thereby facilitating dissolution of carbides contained within the liquid steel.
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