Control process for performances of steel plate during hot rolling and flat rolling process of single-stand steckel mill
A technology of a single-stand steel-steel rolling mill, which is applied in the field of performance control of hot-rolled flat-rolled steel plates in a single-stand steel-steel rolling mill. Performance qualification rate, optimization of steel burning process, and improvement of primary rolling yield
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Embodiment 1
[0017] A performance control process for hot-rolled flat-rolled steel sheets in a single-stand furnace coil mill. The process requires a furnace temperature of 1200°C, a rolling pass of 4+7 passes, a second-stage rolling temperature of 890°C, and a billet thickness of 3.2 hours after warming. The heating temperature of the middle tail is 1220°C, 1200°C, and 1230°C in sequence; the first to third passes start the large scale descaling of the rolling mill, and the fifth to tenth passes start high pressure and small flow: the odd pass is opened in the first half of the rolled piece, and the even pass Open at the second half of the rolled piece, and open the air purge of the coil rolling mill in the 5th to 11th passes; the original steel throwing speed is 1.50m / s 2 , acceleration 0.015 m / s 2 ;When the steel throwing is finished, the cooling water of the penultimate group will be automatically closed; the edge shielding of the cooling system will be enabled, and each side will be s...
Embodiment 2
[0026] A control process for the performance uniformity of hot-rolled flat-rolled steel sheets in a single-stand furnace coil mill. The process requires a furnace temperature of 1200°C, a rolling pass of 4+7 passes, a second-stage rolling temperature of 940°C, and a thickness of the billet to be warmed for 3.5 hours. , the heating temperature of the head, middle and tail of the billet is 1215°C, 1200°C, and 1240°C in sequence; the first to third passes start the large descaling of the rolling mill, and the sixth to tenth passes start high pressure and small flow: odd passes are opened in the first half of the rolled piece, The even pass is opened in the second half of the rolled piece, and the air purge of the coil rolling mill is started in the 5th to 11th passes; the original steel throwing speed is 1.54m / s 2 , acceleration 0.01 m / s 2 ;When steel throwing is finished, the cooling water of the penultimate group 1 and 2 will be automatically closed; the side shielding of the c...
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