Three-segment type abrasion-resistant and temperature-resistant bloom foot roller

Abstract

The invention discloses a three-segment type abrasion-resistant and temperature-resistant bloom foot roller and relates to the technical field of bloom continuous casting machine parts. The three-segment type abrasion-resistant and temperature-resistant bloom foot roller comprises a mandrel, and further comprises three segments of single roller bodies; the middle of each single roller body is provided with an installing hole, and the mandrel sequentially penetrates the installing holes of the three segments of single roller bodies; a pair of copper sleeves close to the end face of each installing hole are arranged in the installing hole, and the copper sleeves are arranged between the mandrel and the single roller bodies in a sleeved manner; the mandrel is provided with at leas three oil outflow holes which are evenly distributed; and high-temperature-resistant check rings are connected between the end faces, away from the oil outflow holes, of the copper sleeves and between the adjacent copper sleeves, and the high-temperature-resistant check rings are arranged outside the mandrel in a sleeving manner. The three-segment type abrasion-resistant and temperature-resistant bloom foot roller plays a guiding role in casting blank when the casting blank just goes out of a crystallizer, guarantees that the installing dimension and the maximum boundary dimension do not change, both the lubricating requirement can be met, and deformation can also be remarkably reduced, the service life is prolonged, the heat shutdown time is shortened, the operation rate of a continuous casting machine is increased, and scratches and indentation of the surface of the casting blank are reduced.

Description

technical field [0001] The invention relates to a foot roll of a bloom continuous casting machine in the field of metallurgy, in particular to a wear-resistant, high-temperature-resistant and deformation-resistant roll device for sector segments of a bloom continuous casting machine. Background technique [0002] The continuous casting roll is a device for bending, straightening, guiding, and pulling the cast slab that has been cooled and solidified by the mold of the continuous casting machine into a thin shell and gradually solidified in the secondary cooling zone, including driving rolls, driven rolls and foot roll. The foot roll of the continuous casting machine is mainly used to transport the billet after liquid steel crystallization to the tension leveler and the conveying roller table. [0003] At present, the assembly method of the foot roller is as follows figure 1 In the bearing type shown, the foot roller is lubricated to the bearings on both sides through glyce...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that in the continuous casting process of the continuous casting machine, since the foot roll device works under extremely cold and extremely hot conditions, the foot roll often has bearing failure and jamming, and the service life is short, so it cannot be connected with the bloom. The maintenance cycle of casting machine process equipment is synchronized, which seriously affects the operation rate of continuous casting machine, and the hot shutdown time is long

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