A bending control method of hot-rolled h-beam
A technology of bending control and H-shaped steel, applied in the direction of rolling force/roll gap control, metal rolling, etc., can solve the problems affecting the uniformity of product performance, the enhancement of temperature non-uniformity, and the long rolling time of rolled pieces, etc., to achieve The effect of high production efficiency, excellent appearance, and product quality improvement
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Embodiment 1
[0021] Rolling H-beams of H400*400*13*21 specifications, the rolling process adopts 7 passes of reciprocating rolling. On the basis of traditional production technology, by redistributing the pressing procedure, the last pass is used as the smoothing and forming pass (final Rolling passes), that is, rolling 6 passes, smoothing and forming 1 pass. The reduction of the universal roughing mill and the final rolling pass of the smoothing and forming pass is 0mm, the reduction of the vertical roll of the universal finishing mill is 3.4%, the reduction rate of the flat roll is 3.7%, and the rolling load of the flat roll is 2500KN , the rolling load of the vertical roll is 2800KN, and the rolling speed is 5m / s. The rolling speed of the present invention and the allocation of reduction rules can be adjusted by a secondary computer, which is the same as the traditional process; the reduction, reduction rate, and rolling load of the rolling pass are all increased compared with the tradi...
Embodiment 2
[0023] Rolling H-shaped steel of H488*300*11*18 specification, the rolling process adopts 5 passes of reciprocating rolling, on the basis of traditional production technology, by redistributing the pressing procedure, the last pass is used as the smoothing and forming pass (final Rolling passes), that is, rolling 4 passes, smoothing and forming 1 pass. The reduction of the universal roughing mill and the final rolling pass of the smoothing and forming pass is 0mm, the reduction of the vertical roll of the universal finishing mill is 4.4%, the reduction rate of the flat roll is 3.9%, and the rolling load of the flat roll is 2400KN , the rolling load of the vertical roll is 3000KN, and the rolling speed is 6m / s. In the present invention, the rolling speed and the distribution of the reduction schedule can be adjusted by a secondary computer, which is the same as the traditional process. Compared with the traditional process, the reduction amount, reduction rate and rolling load...
Embodiment 3
[0025] Rolling H-shaped steel of H900*300*16*28 specification, the rolling process adopts 9 passes of reciprocating rolling, on the basis of traditional production technology, by redistributing the pressing procedure, the last pass is used as the smoothing and forming pass (final Rolling passes), that is, rolling 8 passes, smoothing and forming 1 pass. The reduction of the universal roughing mill and the final rolling pass of the smoothing and forming pass is 0mm, the reduction of the vertical roll of the universal finishing mill is 5.0%, the reduction rate of the flat roll is 4.3%, and the rolling load of the flat roll is 2350KN , the rolling load of the vertical roll is 2900KN, and the rolling speed is 4m / s. In the present invention, the rolling speed and the distribution of the reduction schedule can be adjusted by a secondary computer, which is the same as the traditional process. Compared with the traditional process, the reduction amount, reduction rate and rolling load...
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