Low-yield-strength anti-seismic steel plate for building and production method of steel plate
A low-yield strength, construction-use technology, applied in the field of iron and steel metallurgy, can solve problems such as increasing construction costs and affecting the appearance of buildings, and achieve the effects of optimizing the rolling process, reducing the effect of grain boundary strengthening, and good low-cycle fatigue characteristics
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Embodiment 1
[0018] Embodiment 1: The low-yield-strength anti-seismic steel plate used in this building adopts the following chemical composition and production process.
[0019] Chemical composition (wt): C0.026%, Si0.041%, Mn0.58%, P0.01%, S0.005%, N0.0050%, Ti0.034%, the balance is Fe and unavoidable impurities .
[0020] Production process: (1) Steel slabs are prepared by conventional smelting and continuous casting processes; the thickness of the steel slabs is 220mm.
[0021] (2) Rolling process: the heating temperature of the billet is 1200°C; the starting rolling temperature of the first stage (rough rolling) is 1110°C, the final rolling temperature is 1040°C, and the thickness to be warmed is 90mm; the starting rolling temperature of the second stage (finish rolling) is 930°C , The final rolling temperature is 880°C; hot straightening after rolling, and air cooling to obtain a steel plate with a thickness of 40mm.
[0022] (3) Heat treatment process: the heating temperature of t...
Embodiment 2
[0024] Embodiment 2: The low-yield-strength anti-seismic steel plate used in this building adopts the following chemical composition and production process.
[0025] Chemical composition (wt): C0.033%, Si0.046%, Mn0.42%, P0.018%, S0.008%, N0.0048%, Ti0.029%, the balance is Fe and unavoidable impurities .
[0026] Production process: (1) The billet is prepared by conventional smelting and continuous casting process; the thickness of the billet is 230mm.
[0027] (2) Rolling process: the heating temperature of the billet is 1220°C; the starting rolling temperature of the first stage (rough rolling) is 1120°C, the final rolling temperature is 1050°C, and the thickness to be warmed is 120mm; the starting rolling temperature of the second stage (finish rolling) is 950°C , the final rolling temperature is 900°C; hot straightening after rolling, and air cooling to obtain a steel plate with a thickness of 55mm.
[0028] (3) Heat treatment process: the heating temperature is 900° C.,...
Embodiment 3
[0030] Embodiment 3: The low-yield-strength anti-seismic steel plate used in this building adopts the following chemical composition and production process.
[0031] Chemical composition (wt): C0.010%, Si0.024%, Mn0.60%, P0.012%, S0.010%, N0.0035%, Ti0.01%, the balance is Fe and unavoidable impurities .
[0032] Production process: (1) The billet is prepared by conventional smelting and continuous casting process; the thickness of the billet is 230mm.
[0033] (2) Rolling process: the heating temperature of the billet is 1250°C; the starting rolling temperature of the first stage (rough rolling) is 1100°C, the final rolling temperature is 1050°C, and the thickness to be warmed is 100mm; the starting rolling temperature of the second stage (finish rolling) is 960°C , The final rolling temperature is 910°C; hot straightening after rolling, and air cooling to obtain a steel plate with a thickness of 45mm.
[0034] (3) Heat treatment process: the heating temperature is 920° C., ...
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