Repairing method of waste steel groove

Abstract

The invention provides a repairing method of a waste steel groove. A damaged portion is cut into a notch in a regular shape, and chamfering is carried out to form a ladder-shaped notch with a big internal opening and a small external opening; a thickness and a shape of a steel plate are correspondingly selected according to positions of the notch, or a V-shaped patch or a U-shaped patch is manufactured, and an inversely ladder-shaped patch in the same size and an opposite chamfering direction is cut according to the size of the cut ladder-shaped notch and inclination of the chamfering; and the patch and the notch are welded, and a steel plate stripe is welded on an outside of a repairing portion to conduct covering and protection. The repairing method is simple and easy to apply; and with the adoption of the repairing method, local materials can be used, equipment and investment need not to be added, the service life of the waste steel groove can be prolonged, reserving quantity of the waste steel groove is reduced while the production cost is reduced, stable and smooth conducting of production is guaranteed; and meanwhile waste steel leakage in a lifting process of the waste steel groove can be avoided, and person and equipment safety are guaranteed.

Description

technical field [0001] The invention belongs to the field of steelmaking auxiliary equipment, and in particular relates to a method for repairing damaged parts of scrap steel grooves used in converters. Background technique [0002] The scrap tank is the main tool for adding scrap to the converter. During the production process, the scrap steel channel has been impacted by various shapes and types of scrap steel for a long time, so that cracks or holes will appear on the edge or bottom of the scrap steel channel. Because there is no effective repair method, many iron and steel enterprises have to continue to use scrap steel channels with small cracks and loopholes; and directly scrap the scrap steel channels with large loopholes or cracks. The former will not only aggravate the expansion of cracks and loopholes, but also easily cause small steel scraps to leak during hoisting, resulting in potential safety hazards; while the latter will increase production costs, and at the...

AI Technical Summary

Problems solved by technology

The former will not only aggravate the expansion of cracks and loopholes, but also easily cause small steel scraps to leak during hoisting, resulting in potential safety hazards; while the latter will increase production costs, and at the same time reduce the turnover of scrap steel channels after scrapping. Steelmaking production poses certain constraints

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