Method and device for removing burrs on the bottom of curved billet on continuous casting machine

Abstract

The invention discloses a method and device for removing burrs at the bottom of a bent casting blank on a continuous casting machine. The device comprises casting blank bending situation detecting systems arranged on the two sides of the end of a roller bed set, and deburring systems arranged at the ends of roller beds. According to the method, when the head of the bent casting blank is moved to be near installing plates, when a slab starts to shield a first phototube, the farthest phototube, capable of being shielded by the head of the bent casting blank, below a reference face within 5s is recorded and determined to be numbered as -n1, and accordingly the maximum value Bmax of the head bending of the bent casting blank is calculated; and according to the maximum value Bmax of the head bending of the bent casting blank, the deburring roller oil cylinder rising height head H is adjusted, accordingly, deburring rollers start to deburr the head of the bent casting blank, and in a similar way, the deburring rollers start to deburr the tail of the bent casting block so that the removing process of the burrs at the bottom of the whole bent casting blank 1 can be finished. The device is simple in structure, ingenious in design, convenient to mount and demount and low in cost.

Description

technical field [0001] The invention relates to a method for removing burrs when a slab is bent, in particular to a method and a device for removing burrs at the bottom of a curved slab on a continuous casting machine. Background technique [0002] In the continuous casting production process, the billet is cut into blocks under the action of the high-speed flame of the flame cutting machine. During the cutting process, the high-temperature steel flow forms molten steel at the bottom of the billet (the position of the kerf), and hard burrs are formed after cooling. Since the burr is mainly composed of steel and impurities, it has a strong adhesion to the slab and is difficult to remove. However, the existence of burrs will not only damage the surface of the roll, affect the life of the roll, cause defects in strip quality such as inclusions and cracks, but also affect the direct delivery rate and production rhythm of hot rolling. In 2012, the deburring machine of the 3# con...

AI Technical Summary

Problems solved by technology

However, once the slab bends due to uneven cooling (high in the middle and low on both sides), the bottom surface of the slab is not a horizontal plane, and the blade of the deburring machine and the slab cannot move relative to each other, so it is difficult to remove the burrs under the bent slab. At present, there is no effective solution to remove the burr under the bent billet at home and abroad.

Images