Beam blank continuous casting secondary cooling zone cooling device

Abstract

The invention provides a beam blank continuous casting secondary cooling zone cooling device, relating to auxiliary device for carrying out cooling treatment on casting blank on the site. The cooling device is composed of a foot roller section cooling mechanism, a zone 1 section A cooling mechanism, a zone 1 section B cooling mechanism and a zone 2 cooling mechanism; wherein the foot roller section cooling mechanism is provided with four pairs of foot roller wide face nozzles and two pairs of foot roller narrow face nozzles, the zone 1 section A cooling mechanism is provided with two pairs of zone 1 section A wide face nozzles and one pair of foot roller narrow face nozzles, the zone 1 section B cooling mechanism is provided with two pairs of zone 1 section B wide face nozzles and one pair of zone 1 section B narrow face nozzles, and the zone 2 cooling mechanism is provided with two zone 2 section wide face nozzles and one pair of zone 2 section narrow face nozzles. The invention has the advantages of simple and reasonable structure and reliable use; casting blank surface heat transfer rule is followed, and utilization of water is reasonable and effective; temperature difference of different parts on cross section of casting blank is reduced, casting blank temperature and structural homogeneity are obviously improved, crack of casting blank can be effectively reduced, quality of casting blank is improved, blank yield is improved, and production is promoted.

Description

technical field [0001] The invention belongs to the continuous casting of metals, and in particular relates to an accessory device for cooling casting billets on site. Background technique [0002] Due to the advantages of low energy consumption, less process, high yield and low cost of rolling H-beam by continuous casting special-shaped billets, the continuous casting technology of special-shaped billets has been vigorously developed at home and abroad in recent years. In the process of continuous casting of profile billet, after the continuous casting billet enters the foot roll section to the secondary cooling zone for straightening, there is still a large amount of liquid steel inside. The cooling water makes the heat on the surface of the slab continuously released, and at the same time, the heat inside the slab is continuously transferred to the surface of the slab, so that the slab is gradually completely solidified from the outside to the inside. The profiled blank ...

AI Technical Summary

Problems solved by technology

Its defect is that this cooling device does not effectively distinguish the arrangement of nozzles and the intensity of water spray according to the shape characteristics of the profiled billet and the heat transfer mode on the surface of the billet, so that the cooling intensity on the surface of the profiled billet does not achieve strong cooling at high temperature and low temperature at low temperature. The effective cooling mode of weak cooling has caused a high incidence of various quality defects such as cracks on the surface and inside of the slab, resulting in low billet formation rate, many waste products, increased energy consumption, and affected production.

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