Device for distributing secondary cooling water in width direction of casting blank
A technology of slab width and diverter device, which is applied in the field of metallurgical machinery and equipment, can solve problems such as transverse cracks and overcooling at the corners of slabs, and achieve the effects of convenient operation, precise control, and simple structure
Active Publication Date: 2014-08-27
DALIAN HUARUI HEAVY IND GROUP
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Problems solved by technology
The deficiency of the prior art is: but when the continuous casting machine is modified to produce a slab with a small cross-section, due to the fixed position of the nozzle, the edge of the slab will be covered by the gas mist cooling water, and supercooling will occur, thereby causing the slab to produce edge Quality defects such as transverse cracks at corners
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[0017] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0018] The embodiment is a 200×800-1600mm stand-alone, single-flow stainless steel slab continuous caster device for splitting the secondary cooling water in the width direction of the casting slab. The device includes an aerosol nozzle 1 fixed on the sector frame, two water baffles 3, two hydraulic cylinders 4 with displacement sensors and a PLC control system 5, and the hydraulic cylinders 4 with displacement sensors are respectively fixedly connected to the sector frame , two hydraulic cylinders 4 with displacement sensors are respectively located on both sides of the width direction of the slab 2, at positions corresponding to the aerosol nozzle 1, and the water baffle 3 is a vertical plate, and the lower edge of the vertical plate has a hydraulic pressure A reinforced plate protruding in the direction of the cylinder. Two water retaining plates 3 a...
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A device for distributing secondary cooling water in the width direction of a casting blank comprises gas spray nozzles fixedly arranged on a fan-shaped segment frame, two water baffles, two hydraulic cylinders with displacement sensors and a control system, the two hydraulic cylinders with the displacement sensors are fixedly connected with the two sides of the fan-shaped segment frame respectively in the width direction of the casting blank and are located at the positions corresponding to the gas spray nozzles, the two water baffles are connected to the ends of piston rods of the hydraulic cylinders with the displacement sensors respectively, the water baffles are located above the surface of the casting blank, and when the piston rods of the hydraulic cylinders with the displacement sensors are located at the initial positions, the distance between the two water baffles is the maximum width A of the casting blank, and the hydraulic cylinders with the displacement sensors are connected with the control system. The device has the advantages of being capable of dynamically distributing redundant cooling water on the side of the casting blank online according to the width section of the produced casting blank, simple in structure, convenient to operate, precise in control and reliable in action, and solving the quality problem caused by supercooling of the side of the casting blank.
Description
technical field [0001] The invention belongs to the field of metallurgical machinery and equipment, in particular to a cooling water distribution device for a slab continuous casting machine. Background technique [0002] During the production process of the continuous casting machine, the molten steel is cooled and solidified once in the crystallizer to form a slab with a certain thickness of the shell, and then the high-temperature slab with a liquid core enters the guide area of the slab through the motor drive of the sector. The guide area of the fan-shaped section continues to descend, and at the same time, it is cooled by the air mist nozzle. The air mist secondary cooling must ensure the uniformity of the surface temperature of the slab, and avoid excessive lateral temperature gradients on the surface of the slab and overcooling of the edges. Phenomenon. [0003] The air mist nozzles of the existing slab continuous casting machine are usually arranged according t...
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Inventor 国兴龙祖大伟王红艳
Owner DALIAN HUARUI HEAVY IND GROUP