| 摘要 |
<p>PURPOSE:To automatically straighten the failure of flatness of a steel plate, to reduce maintenance cost and to improve the heating efficiency of a heater when the quantity of camber at the tip of the plate grows so large that it cannot pass through an edge heater, in a device for straightening and controlling a quantity of camber of the tip of the steel plate in a hot rolling equipment for the steel plate. CONSTITUTION:A steel plate S is rolled by a roughing mill 10, failure of flatness such as upward camber, waviness, etc., at the tip part of the plate is detected by camber detectors 40, 40' for the plate tip installed on the inlet and outlet sides of a roller leveler 1, the signal is sent to an arithmetic until 41. When the tip of the steel plate indicates the quantity of camber which cannot pass the tip of the steel plate through the edge heater 20, a controller 42 is actuated, an upper carriage 3 is tilted and rolled down by a rolling down device, the intermesh of the upper and lower rollers 4, 6 on the inlet side is enlarged and the intermesh is set to zero on the outlet side to drive and rotate the upper and lower rolls 4, 6 and pass the steel plate S between them. Both edge parts of the steel plate whose flatness is straightened by the roller leveler are heated by an edge heater 20 to equalize the temperature distribution in the width direction and then the steel plate is rolled by the finishing mill 30 into a required plate thickness.</p> |
