Water-cooling chassis for casting large steel ingot and using method

Abstract

The invention relates to a water-cooling chassis for casting a large steel ingot. The water-cooling chassis is used for a large steel ingot casting production process in the metallurgical industry and comprises a chassis body, multiple stages of cooling rings (a first-stage cooling ring, a second-stage cooling ring, a third-stage cooling ring and the like) and flanges, wherein the multiple stages of cooling rings are sequentially arranged in the chassis body from the center to the edge, and the distribution density of the cooling rings decreases progressively along with increase of the distance to the center; the chassis body takes the shape of a circle, a square or a rectangle, and accordingly, the multiple stages of cooling rings take the shapes of circles, squares or rectangles; and the flanges for connecting a cooling water system are arranged at the inlet ends and the outlet ends of the multiple stages of cooling rings. The water-cooling chassis can shorten the steel ingot coagulation time to improve the production efficiency, can enhance the up-down solidification sequence during the steel ingot solidification process, and particularly can improve the cooling strength of a central area at the bottom of the large steel ingot to promote uniform propulsion of a longitudinal solidification layer and alleviate the shrinkage cavity loose defect of the center of the large steel ingot.

Description

Technical field [0001] The invention relates to the technical field of casting, in particular to a water-cooled chassis for casting large steel ingots and a use method. Background technique [0002] In the casting and production process of large steel ingots, due to the long solidification time of large steel ingots and the weak longitudinal solidification sequence in the later stage of solidification, serious core shrinkage porosity and macro segregation are easy to occur. [0003] At present, the main measure for the long solidification time of large steel ingots is the water-cooled steel ingot mold technology, which improves the cooling strength during the solidification of large steel ingots through water cooling to shorten the solidification time and reduce macro-segregation and other defects. However, the water-cooled steel ingot mold mainly strengthens the side cooling strength during the solidification of the large steel ingot, and is not conducive to the bottom-up solidifi...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a water-cooled chassis to improve the longitudinal cooling strength during the solidification process of the large steel ingot and reduce the defects such as shrinkage cavity and porosity in the core of the large steel ingot for the current problems such as serious shrinkage cavity and porosity in the core of the large steel ingot.

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