Method for eliminating bilateral waves of low-carbon Q235B of ESP production line
The invention relates to a method for eliminating bilateral waves of low-carbon Q235B on an ESP production line. The method comprises the following technological processes: steelmaking, continuous casting, rough rolling, transverse magnetic induction heating and descaling, finish rolling, laminar co...
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Sprache: | chi ; eng |
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Zusammenfassung: | The invention relates to a method for eliminating bilateral waves of low-carbon Q235B on an ESP production line. The method comprises the following technological processes: steelmaking, continuous casting, rough rolling, transverse magnetic induction heating and descaling, finish rolling, laminar cooling, flying shearing and coiling. In the steelmaking procedure, raw materials are controlled according to the mass percent and comprise 0.01%-0.06% of C, 0.10%-0.50% of Si, 0.20%-0.60% of Mn, smaller than or equal to 0.003% of S, smaller than or equal to 0.020% of P and the balance iron element. According to the method, good preconditions are provided for the lower detection and the upper detection of the ultra-thin specification, the rolling stability is guaranteed, the finish rolling temperature is controlled within a certain range according to the content of C, and the rolling quality of the ultra-thin specification is improved. And wave shapes caused by asynchronous phase change in the finish rolling stage ar |
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