On-line liquid steel attachment cleaning device for continuous casting and method

Abstract

An on-line liquid steel attachment cleaning device for a continuous casting and a method belong to the technical field of continuous casting finishing equipment and methods and are used for on-line cleaning of liquid steel attachments caused by flame cutting of the continuous casting. The technical scheme is that the on-line liquid steel attachment cleaning device comprises a high-pressure nitrogen purging part and a mechanical cleaning part, wherein the upper end of a high-pressure purging pipe is connected with a high-pressure nitrogen pipeline; the lower end of the high-pressure purging pipe is connected with a blowing nozzle positioned at the lower part of the continuous casting; a depressing arm is positioned below billet-out roller beds of a fixed-length continuous casting which is cut; a depressing guide roller is mounted at the front end of the depressing arm; the depressing arm is connected with a swinging cutting arm through an adjusting screw rod; a lever shaft is arranged in the middle of the swinging cutting arm; and a cutting knife is mounted at the rear end of the swinging cutting arm and is opposite to the lower surface of the fixed-length continuous casting. The on-line liquid steel attachment cleaning device can clean the liquid steel attachments at the front end and the rear end of the continuous casting, can quickly and effectively finish cleaning of the liquid steel attachments on two cut end surfaces of the continuous casting while cutting the continuous casting, is high in efficiency and clean and radical in cleaning, and can achieve the cleanliness to 100%.

Description

technical field [0001] The invention relates to an online cleaning device and method for continuous casting slab flame cutting and tumor cutting, and belongs to the technical field of continuous casting slab finishing equipment and methods. Background technique [0002] When the continuous casting slab is cut to length by flame, the liquid molten steel will stick to the lower edge of the continuous casting slab incision, forming cut nodules on the lower edges of the two cutting sections. For special steel continuous casting slabs, especially large-section Ni-containing alloy steel continuous casting slabs, due to the characteristics of the steel type, the fluidity of liquid steel is poor, and the cut nodules will be very large, which can reach 5~10mm high and 10~30mm wide. [0003] Due to the existence of the cutting nodules, they will be firmly attached to the lower edge and lower surface of the end of the billet after cooling. During the subsequent rolling process, the coo...

AI Technical Summary

Problems solved by technology

Cleaning in the cold state generally adopts manual cleaning with a flat shovel, cleaning with a wind shovel, and cleaning of mechanical equipment with power. These methods are carried out in a cold state, requiring special procedures and venues, and turning the continuous casting slab, which is time-consuming Laborious and costly

The other is the blowing method, which uses high-pressure nitrogen to blow online when the continuous casting slab is released. This method is simple and convenient, low in cost and high in efficiency, but the actual use effect is not good, and it can only achieve partial cleaning, which is difficult Both cutting ends are cleaned up, which cannot meet the needs

[0005] So far, the above-mentioned traditional method has been used to clean the continuous casting billets, which is not only inefficient, but also not clean, which will affect the quality of the products after the continuous casting billets enter the rolling process, which has become a difficult problem restricting the production of high-quality products. to be resolved

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