Crystallizer copper pipe with uniform cooling function

Abstract

The invention designs a crystallizer copper pipe with a uniform cooling function. A layer of 5920-SN sealant with a set thickness is bonded in a set size range of the outer surface of a corner part ofthe crystallizer copper pipe to serve as a high-temperature-resistant thermal insulation coating, and the portion, bonded with the high-temperature-resistant thermal insulating coating, of the cornerpart of the copper pipe is subjected to pre-texturing treatment through sand blasting or laser; the thickness of the high-temperature-resistant thermal insulating coating is set to be 0.04 mm to 0.2mm, the width of the high-temperature-resistant thermal insulating coating bonded to the corner part of the crystallizer copper pipe is not larger than the arc length of a transition arc of the outersurface of the corner part, and the width is not smaller than 1 / 4 of the arc length of the transition arc, and the heat conductivity coefficient of the thermal insulation coating ranges from 0.02 to 0.1 w / k.m, and when the thermal insulation coating ranges from 260 DEG C to 300 DEG C, the time of working with fundamental strength higher than 1.5 MPa is longer than 500 hours. The crystallizer copper pipe solves the problem of uneven cooling of the crystallizer copper pipe, the phenomenon of supercooling of the corner part of a casting blank is improved, and particularly, it is guaranteed that the thermal insulation coating can be firmly adhered to the corner part of the crystallizer copper pipe, so that the use effect is not influenced, the implementation is easy, the reliability is high, and the crystallizer copper pipe is beneficial to popularization and use.

Description

technical field [0001] The invention relates to a uniformly cooled crystallizer copper tube, in particular to a crystallizer copper tube capable of efficient and uniform cooling during operation and a processing method for the copper tube, belonging to the continuous casting technical field of the iron and steel metallurgical machinery industry. Background technique [0002] The mold is the first cooling equipment of the entire continuous casting machine, its cooling performance directly affects the quality of the cast slab, and it is the key control equipment of the continuous casting machine. In the existing continuous casting production line, square, rectangular or polygonal cross-section crystallizers During the solidification process of the cast slab, after the liquid metal is poured into the copper tube of the mold, under the action of the external cooling water of the copper tube, it crystallizes and solidifies along the inner wall of the mold, forming a billet shell a...

AI Technical Summary

Problems solved by technology

[0004] To sum up, although the existing various disclosed technical solutions consider the method of reducing the cooling intensity of the corner of the crystallizer to improve the problem of overcooling at the corner of the slab, these solutions are basically only an ideal structure The method is difficult to implement, and the main problems are: low reliability, short service life, and inability to achieve stable support, so it has not been widely used

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