12Cr2Mo1R steel plate for ultra-thick hydrogen-contacting equipment and production method thereof
A hydrogen-facing equipment and production method technology, applied in the field of steel, can solve the problems of long production cycle, difficult production, waste of production cost, etc., and achieve the effect of large margin and uniform impact performance
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[0017] The extra-thickness of the present invention is 100mm-150mm and the performance and flaw detection hydrogen steel 12Cr2Mo1R steel plate contains the following chemical composition in weight percentage (unit, wt%): C: 0.08-0.15, Si: 0.20-0.50, Mn: 0.30 ~0.60, P: ≤0.018, S: ≤0.005, Als: ≤0.020~0.050, Cr: 2.0~2.5, Mo: 0.90~1.10, others are Fe and residual elements.
[0018] The production method adopted in the present invention includes: converter smelting, LF refining, vacuum refining, pouring, heating, rolling, controlled cooling, slow cooling and heat treatment. In the converter smelting, ensure that the tapping carbon is ≥ 0.05%, the tapping P is ≤ 0.015%, and the tapping temperature is ≥ 1650°C; the number of spot blowing should not exceed 2 times to avoid slag during the tapping process; in the LF refining , use a large amount of slag to make slag, and ensure that the white slag retention time is controlled at more than 15min; in the vacuum refining, the holding time...
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