Method for controlling surface oxide scale defect of high-Ni super-thick steel plate
The invention relates to a control method for scale defects on the surface of a high-Ni super-thick steel plate. The steel billet material comprises the following chemical components in percentage by weight: 0.11-0.15% of C, 0.15-0.35% of Si, less than or equal to 1.60% of Mn, less than or equal to...
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Main Authors | , , , , |
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Format | Patent |
Language | Chinese English |
Published |
26.07.2024
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Subjects | |
Online Access | Get full text |
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Summary: | The invention relates to a control method for scale defects on the surface of a high-Ni super-thick steel plate. The steel billet material comprises the following chemical components in percentage by weight: 0.11-0.15% of C, 0.15-0.35% of Si, less than or equal to 1.60% of Mn, less than or equal to 0.010% of P, less than or equal to 0.002% of S, less than or equal to 0.80% of Cr, less than or equal to 0.60% of Mo, 1.00-3.0% of Ni, less than or equal to 0.4% of Cu, 0.06-0.09% of Al, less than or equal to 0.06% of V, less than or equal to 0.04% of Nb, less than or equal to 0.006% of N, less than or equal to 0.002% of B and the balance of Fe and inevitable impurity elements. On the basis of the design of adding high-Ni alloying treatment components, the special performance control requirements and the steel billet with the thickness of 450 mm, appropriate production process parameters such as heating, descaling and rolling are adopted, and the problems of generation and removal of high-viscosity oxide scales gen |
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Bibliography: | Application Number: CN202410271520 |