A rolling method for improving the surface quality of steel plates
A surface quality, steel plate technology, applied in metal rolling, metal rolling, workpiece surface treatment equipment, etc., can solve the problem of insignificant improvement of steel plate quality, reduce the probability of secondary oxidation, improve removal ability, and reduce damage degree of effect
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Embodiment 1
[0036] A rolling method for improving the surface quality of steel plates provided in this embodiment,
[0037] S1. Its chemical composition and mass percentage are as follows: C: 0.02%~0.30%, Si≤0.15%, Mn: 0.30%~2.20%, P≤0.020%, S≤0.0050%, Ni≤0.30%, Nb≤0.070% , Cu≤0.50%, N≤0.0050%, Ti: 0.006%~0.020%, Cr≤0.30%, Al: 0.015%~0.050%, the balance is Fe and impurities;
[0038] S2. After passing the surface inspection, the blank is sent to a walking heating furnace for heating, with a thickness specification of 18mm, a heating time of 12.1min / cm, a soaking time of 53min, and a target tapping temperature of 1106°C;
[0039] S3. After the billet leaves the heating furnace, it advances at a speed of 3m / s. The billet is roughly descaled in the descaling box, and the descaling pressure is 23MPa. After the descaling is completed, it is carried out at a speed of 3m / s to the rolling mill for rough rolling;
[0040] S4. The starting temperature of rough rolling is 1078°C. The descaling oper...
Embodiment 2
[0045] A rolling method for improving the surface quality of steel plates provided in this embodiment,
[0046]S1. Its chemical composition and mass percentage are as follows: C: 0.02%~0.30%, Si≤0.15%, Mn: 0.30%~2.20%, P≤0.020%, S≤0.0050%, Ni≤0.30%, Nb≤0.070% , Cu≤0.50%, N≤0.0050%, Ti: 0.006%~0.020%, Cr≤0.30%, Al: 0.015%~0.050%, the balance is Fe and impurities;
[0047] S2. After passing the surface inspection, the billet is sent to the walking heating furnace for heating. The thickness specification is 11mm, the heating time is 11.3min / cm, the soaking time is 51min, and the target tapping temperature is 1102°C;
[0048] S3. After the billet leaves the heating furnace, it advances at a speed of 3m / s. The billet is roughly descaled in the descaling box, and the descaling pressure is 22MPa. After the descaling is completed, it is carried out at a speed of 3m / s to the rolling mill for rough rolling;
[0049] S4. The starting temperature of rough rolling is 1066°C. The descaling...
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