Medium-high-carbon continuous casting billet surface defect control system and control method

Abstract

The invention is suitable for the technical field of continuous casting billet manufacturing, and provides a medium-high-carbon continuous casting billet surface defect control system and a control method. The medium-high-carbon continuous casting billet surface defect control system comprises a preparation assembly and a cooling assembly, wherein the preparation assembly comprises a rotary tower,an intermediate tank and a vibration crystallizer, which are sequentially arranged from high to low, are connected through pipelines and communicate with one another; the cooling assembly comprises acooling box, a roller shaft, an air blowing part, a refrigerator and a spray nozzle; the refrigerator conveys prepared ultralow-temperature cold air into the cooling box, and utilizes the cold air tocool continuous casting billets; meanwhile, the air blowing part blows air into the cooling box, under the action of wind power, the cold air can rapidly flow in the cooling box, and hot air in the cooling box can be rapidly replaced, so that a cooling speed of the continuous casting billets is further increased, and thus, the problem that the continuous casting billet cracks after being cooled due to the low cooling speed is solved.

Description

technical field [0001] The invention belongs to the technical manufacturing field of continuous casting slabs, and in particular relates to a control system and a control method for surface defects of medium and high carbon continuous casting slabs. Background technique [0002] The continuous casting slab is the product obtained after the molten steel smelted in the steelmaking furnace is cast by the continuous casting machine. It is mainly divided into the following types in terms of appearance: slab: the ratio of section width to height is relatively large, and it is mainly used for rolling plates; Billet: section width and height are equal, or the difference is not big, mainly used for rolling section steel and wire; Ordinary wire rods, high-speed wire rods and various small materials; round billets: continuous casting billets with circular cross-sections, the main uses are divided into tube billets and forging billets according to their diameters, and tube billets below...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a surface defect control system and method for medium and high carbon continuous casting slabs, aiming at solving the problem that the continuous casting slabs in the current market cannot be cooled effectively and quickly during the manufacturing process. In turn, it will lead to the problem of cracks appearing after the continuous casting slab is cooled

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