Ultrahigh-strength steel plate and production method thereof
An ultra-high-strength, steel plate technology, applied in the field of high-strength steel plate and its manufacturing, can solve the problems of complex production process and complex manufacturing process, and achieve the effect of reasonable process design, loose process system and reduced manufacturing cost
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[0041] Example 1
[0042] The chemical element percentage distribution ratio of the steel of the present invention is Example 1 in Table 1.
[0043] The manufacturing method is as follows: the heating temperature is 1180℃, and the holding time is 120 minutes; the opening temperature of the first stage rolling is 1060℃; the final rolling temperature of the second stage rolling is 870℃, and the thickness of the finished steel plate is 4mm; the cooling termination temperature of the steel plate Below 200°C.
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[0044] Example 2
[0045] The chemical element percentage ratio of the steel of the present invention is Example 2 in Table 1.
[0046] The manufacturing method is as follows: the heating temperature is 1200℃, and the holding time is 160 minutes; the opening temperature of the first stage rolling is 1090℃; the final rolling temperature of the second stage rolling is 900℃, and the thickness of the finished steel plate is 10mm; the cooling termination temperature of the steel plate Below 200°C.
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[0047] Example 3
[0048] The chemical element percentage ratio of the steel of the present invention is Example 3 in Table 1.
[0049] The manufacturing method is as follows: heating temperature is 1250℃, holding time for 150 minutes; the first rolling temperature is 1150℃; the final rolling temperature of the second rolling is 880℃, the thickness of the finished steel plate is 6mm; the cooling termination temperature of the steel plate Below 200°C.
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