Ultrahigh-strength-plasticity-product cold-rolled steel plate and production method thereof
A technology of cold-rolled steel plate and production method, which is applied in the field of ultra-high-strength plasticity cold-rolled steel plate and its production, can solve problems such as difficulties in implementation, and achieve the effect of excellent plasticity and high-strength plasticity
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Embodiment 1
[0018] The thickness of the ultra-high-strength plastic cold-rolled steel plate in this embodiment is 1.0 mm, and its chemical composition and mass percentage are shown in Table 1.
[0019] The production method of ultra-high-strength plastic cold-rolled steel plate includes steelmaking, continuous casting, hot rolling, acid rolling, primary continuous annealing, secondary continuous annealing, and smoothing processes. The specific process steps are as follows:
[0020] (1) Hot rolling process: continuous casting of molten steel for steelmaking to obtain continuous casting slabs, heating the continuous casting slabs to 1260°C, and keeping the slabs in the furnace for 215 minutes; the starting temperature of finish rolling is 1100°C, and the final rolling temperature is 900°C. The coiling temperature is 690°C;
[0021] (2) Acid rolling process: the acid rolling reduction rate is 54%, the acid solution temperature is 80°C, and the thickness of the cold-rolled sheet is 1.0mm;
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Embodiment 2
[0027] The thickness of the ultra-high-strength plastic cold-rolled steel plate in this embodiment is 1.2 mm, and its chemical composition and mass percentage are shown in Table 1.
[0028] The production method of ultra-high-strength plastic cold-rolled steel plate includes steelmaking, continuous casting, hot rolling, acid rolling, primary continuous annealing, secondary continuous annealing, and smoothing processes. The specific process steps are as follows:
[0029] (1) Hot rolling process: continuous casting of molten steel for steelmaking to obtain continuous casting slabs, heating the continuous casting slabs to 1290°C, and keeping the slabs in the furnace for 230 minutes; the starting temperature of finish rolling is 1095°C, and the final rolling temperature is 875°C. The coiling temperature is 680°C;
[0030] (2) Acid rolling process: the acid rolling reduction rate is 60%, the acid solution temperature is 82°C, and the thickness of the cold-rolled sheet is 1.2mm;
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Embodiment 3
[0036] The thickness of the ultra-high-strength plastic cold-rolled steel plate in this embodiment is 1.4mm, and its chemical composition and mass percentage are shown in Table 1.
[0037] The production method of ultra-high-strength plastic cold-rolled steel plate includes steelmaking, continuous casting, hot rolling, acid rolling, primary continuous annealing, secondary continuous annealing, and smoothing processes. The specific process steps are as follows:
[0038] (1) Hot rolling process: continuous casting of molten steel for steelmaking to obtain continuous casting slabs, heating the continuous casting slabs to 1250°C, and keeping the slabs in the furnace for 190 minutes; the starting temperature of finish rolling is 1080°C, and the final rolling temperature is 880°C. The coiling temperature is 695°C;
[0039] (2) Acid rolling process: the acid rolling reduction rate is 64%, the acid solution temperature is 83°C, and the thickness of the cold-rolled sheet is 1.4mm;
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Abstract
Description
Claims
Application Information
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