Mold variable device of continuous casting apparatus

Abstract

Disclosed is a casting mould variable device for continuous casting equipment. Connecting rods (53, 55 and 57) are swingably connected with a fixed pivot (52), a first movable pivot (54) and a second movable pivot (56) respectively, wherein the fixed pivot (52) is arranged on a base, the first movable pivot (54) is arranged on a supporting component (30) for supporting a short edge casting mould component, and the second movable pivot (56) is arranged on a movable side long edge casting mould component (41). The front end of the connecting rod (55) and the front end of the connecting rod (57) are swingably connected with a third movable pivot (58) and a fourth movable pivot (59) of the connecting rod (53) respectively. The distance between the fixed pivot and the third movable pivot is 1 / 2 of that between the fixed pivot and the fourth movable pivot. Therefore, when the movable side long edge casting mould component moves, the supporting component moves in a linked manner, the movement amount of the supporting component is 1 / 2 of that of the movable side long edge casting mould component, and accordingly, alignment is automatically performed. As a consequence, short edge alignment operation procedures can be decreased, and casting mould replacement time can be remarkably shortened.

Description

technical field [0001] The present invention relates to a mold variable device for changing the cross-sectional size of a cast slab (thickness of a cast slab) in a continuous casting facility, and more particularly relates to a device capable of maintaining the support position of a short-side mold in its width direction (thickness direction of a cast slab). ) The mold variable device of the central continuous casting equipment. Background technique [0002] The molten steel obtained by refining in a converter is stored in a ladle, transported to continuous casting equipment, and poured into a mold of the continuous casting equipment. The molten steel is cooled in the mold to form a solidified shell around the periphery, and then contains The unsolidified slab is drawn downward from the lower end of the mold in the state of molten steel, and the unsolidified slab is supported in a roll zone (zone) including a plurality of rolls, and is further cooled by spraying cooling wate...

AI Technical Summary

Problems solved by technology

[0008] However, the short-side alignment device of the casting mold in the prior art has the following problems: as its dedicated drive device, it needs to be configured as a short-side alignment drive device including a screw jack, a motor, a reducer, and a position detector, so that the equipment price becomes expensive

[0009] In addition, the series of operations for changing the thickness of the mold have the following problems: it is necessary to continuously replace the short-side copper plate and the short-side water tank and perform core adjustment operations, which makes the time for the operation of changing the thickness of the mold longer.

In the continuous casting process, although the pouring of molten steel (drawing out the cast slab) is temporarily stopped while the cast slab exists in the continuous casting equipment, the short-side copper plate and the short-side water tank are replaced and the centering operation is performed, but the continuous casting The process is continuously carried out within 24 hours, so the longer the stop time during this period, the worse the productivity

It usually takes about 10 minutes for short-side alignment. Even if the short-side alignment can be shortened, it will not be effective in shortening the mold change operation time.

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