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An online repair method for perforation of converter body

A converter furnace body and furnace body technology are applied in the field of steelmaking systems, which can solve the problems of large impact on steelmaking production, long repair time, and large workload, and achieve the effects of reliable welding quality, high operation efficiency, and easy implementation.

Active Publication Date: 2021-06-25
SGIS SONGSHAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This plug welding repair process involves gas shielded welding, the process is complex, the workload is relatively large, and the repair time is long, which has a great impact on steelmaking production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] The present invention will be described in detail below in conjunction with the embodiments.

[0024] The following is an example of a 120 ton converter furnace body side burning perforation repair welding to illustrate the online repair method for the converter furnace body perforation of the present invention, the specific method is as follows:

[0025] The first step: preparation before repair

[0026] 1. Pour the unfinished converter molten steel into the molten steel tank first, and empty the slag in the furnace as soon as possible;

[0027] 2. Shake the furnace to a suitable position to check the position and size of the burnt hole in the furnace body, and determine the repair plan;

[0028] 3. After the converter shaker is locked, set up maintenance grids or working platforms on the side of the perforated furnace body;

[0029] Step 2: Treatment of the perforation position of the furnace body

[0030] 1. Clean up the molten steel and steel slag that burnt thro...

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Abstract

The invention relates to an on-line repair method for the perforation of the converter body. The repair steps are as follows: first, prepare before repairing, then process according to the perforation position of the furnace body, then prepare before welding, then perform welding, and finally carry out the internal furnace lining in the later stage. deal with. It is suitable for partial burn-through of the shell of the converter body (the size of the perforation is less than or equal to Φ400mm). The repair method is simple and easy to implement, and the welding quality is reliable and the operation efficiency is high.

Description

technical field [0001] The invention relates to the technical field of a steelmaking system, more specifically, it relates to an online repair method for perforation of a converter body. Background technique [0002] The converter is one of the most important equipment in the steelmaking system. During the steelmaking process, the furnace shell is prone to burn-through accidents due to serious corrosion of the converter lining and falling off of the lining bricks, which will bring huge safety accidents to production. Due to the installation method of the furnace body and the support ring and its own weight, it is very difficult to disassemble. When the furnace body is pierced, how to quickly repair it online and minimize equipment downtime to resume production is particularly important. At present, the welding repair process of filling plug is commonly used in the burnt hole of the converter shell. This plug welding repair process involves gas shielded welding, the process ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K9/00B23K9/235B23K9/23
CPCB23K9/0026B23K9/23B23K9/235
Inventor 张建平林伟忠肖双林邓长付覃小峰马欢
Owner SGIS SONGSHAN CO LTD