CN103361467B - Method for online repairing furnace-wall water cooling block of arc furnace - Google Patents
Method for online repairing furnace-wall water cooling block of arc furnace Download PDFInfo
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- CN103361467B CN103361467B CN201310317625.6A CN201310317625A CN103361467B CN 103361467 B CN103361467 B CN 103361467B CN 201310317625 A CN201310317625 A CN 201310317625A CN 103361467 B CN103361467 B CN 103361467B
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- leakage point
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention belongs to the field of metallurgy technical equipment, and specifically relates to a method for online repairing a furnace-wall water cooling block of an arc furnace. The method for online repairing the furnace-wall water cooling block of the arc furnace comprises the following steps: 1) positioning and marking a water-leakage point of the water cooling block: online determining the position of the water-cooling-block leakage point, and marking on the pipe wall of a water cooling pipe, in the reverse direction of the water leakage point; 2) closing the water leakage points; 3) welding the water leakage points: cutting a welding hole at the marked place on the water-cooling pipe wall in the reverse direction of the water leakage point, welding the leakage point through the welding hole, and then welding the welding hole. The method for online repairing the furnace-wall water cooling block of the arc furnace helps to substantially reduce the risk caused by water-leakage-point welding by operating personnel entering into the furnace because of water leakage of the furnace-wall water cooling block, to make sure that the arc furnace welding keeps continuous stable and smooth running, to improve production efficiency and to reduce production cost.
Description
Technical field
The invention belongs to field of metallurgy technical equipment, particularly, relate to the method for a kind of online repairing electric arc furnace furnace wall water-cooled block.
Background technology
Along with the raising of electric arc furnace unit power level, electric arc furnace internal heat load sharply increases, the imbalance aggravation of in-furnace temperature distribution, considerably reduce the work-ing life of electric arc furnace furnace lining, the application of water cooled furnace wall and bell technology solves the problems referred to above, improve electric arc furnace furnace lining work-ing life, become the gordian technique promoting EAF Technology development.
Electric arc furnace water cooled furnace wall is made up of water-cooled block, can be divided into several forms such as cast tube type, board-like and tubular type by structure.There are certain heat-sinking capability and corresponding dross ability in various forms of water cooled furnace wall, can improve electric furnace liner work-ing life exponentially.Electric arc furnace smelting is often because entering stove steel scrap overlength, and the factors such as cloth is unreasonable, cause steel scrap to drop on the water-cooled block of furnace wall, when the starting the arc of electric arc furnace power transmission, forms loop and beats runout wall water-cooled block, cause water-cooled block to leak.Because water-cooled block leakage point is positioned at electric arc furnace, temperature is high, and water-cooled block surface dross in various degree, makes repairing leakage point very difficult; Needing lowers to enter in electric arc furnace by temperature processes, and the repairing time is greater than 4 hours, causes electric arc furnace normally to smelt interruption; If repair leakage point not in time, continue to smelt, for ensureing safety, must close the water-cooled block recirculated cooling water that leaks, cause the water-cooled block losing cooling effect to melt gradually, this position can become the weakest link on electric arc furnace furnace wall.For ensureing furnace lining safety, after every stove smelting steel, spray repair must be carried out to this position, wear stove cause serious accident to prevent slag, extend the electric arc furnace smelting cycle, reduce production efficiency, and fettling also can increase the production cost such as melting electric consumption, refractory consumption frequently.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, provide the method for a kind of online Rapid-Repair electric arc furnace furnace wall water-cooled block, extend the work-ing life of water cooled furnace wall, improve electric arc furnace production efficiency, reduce production cost, ensure that electric arc furnace is efficient, stable, long-lived and run.
The method of online repairing electric arc furnace furnace wall of the present invention water-cooled block, comprises the following steps:
1) telltale mark water-cooled block leakage point: find water-cooled block leak source position online accurately, and make marks on leakage point in the other direction water-cooled tube tube wall;
2) leakage point is closed;
3) soldering leakage point: leakage point opposite direction water-cooled tube tube wall mark cuts out soldering perforate described in step 1), by soldering perforate, leak source soldering is good, the then good soldering perforate of soldering.
According to the method for online repairing electric arc furnace furnace wall of the present invention water-cooled block, preferably, cut out soldering perforate described in step 3) and use flame cutting instrument.
According to the method for online repairing electric arc furnace furnace wall of the present invention water-cooled block, preferably, the good soldering perforate of soldering described in step 3) uses electric welding.
The method of online repairing electric arc furnace furnace wall of the present invention water-cooled block, particularly, comprises the following steps:
1) telltale mark water-cooled block leakage point: after finding that in arc furnace smelting procedure, furnace wall water-cooled block leaks, under the condition ensureing safety, find water-cooled block leakage point position online accurately, and mark is carried out on leakage point in the other direction steel water-cooled tube tube wall;
2) leakage point is closed: close in time furnace wall and to leak the water inlet pipe of water-cooled block and the valve of rising pipe, pull down Inlet and outlet water metallic hose, cleaned out by the recirculated cooling water leaked in water-cooled block;
3) soldering leakage point: on water-cooled block leakage point reciprocal steel water-cooled tube tube wall (this position marks), soldering perforate is cut open with flame cutting instrument, by the soldering perforate welding tool cut open by good for inner leak source soldering, and then the soldering perforate soldering of being cut outside is good.
In addition, after completing soldering work, carry out recovery water-cooled block recirculated cooling water operation, the metallic water pipe pulled down is connected, opens Inlet and outlet water valve, open cooling circulating water, after normal, recover electric arc furnace smelting.
The method of online repairing electric arc furnace furnace wall of the present invention water-cooled block, first the water coolant leaked in water-cooled block is purged clean, guarantee in tube wall without after ponding, in the outside of leakage point position, the tube wall of the water-cooled block marked carefully cuts soldering perforate open with flame cutting equipment, avoid during cutting damageeing other position, water cooled furnace wall, leakage point position is checked by the soldering perforate cut open, then with torch weldering, the spot welding of water-cooled block water leakage inside is mended, the aperture soldering of being cut outside is again good, guarantees no longer to leak.
Utilize the method for online repairing electric arc furnace furnace wall provided by the invention water-cooled block, the Rapid-Repair to electric arc furnace furnace wall water-cooled block leakage point can be completed in 30-50 minute, greatly reduce because furnace wall water-cooled block leaks, operating personnel enters in stove the risk of carrying out soldering leakage point and bringing, also effectively can reduce and cannot repair and the safety problem brought to electric arc furnace smelting after being forced to close this water-cooled block recirculated water because furnace wall water-cooled block leaks, ensure the continual and steady direct motion of electric arc furnace smelting, enhance productivity, reduce production cost.
Accompanying drawing explanation
Fig. 1 is electric arc furnace furnace wall water-cooled block schematic diagram.
Fig. 2 is the repairing schematic diagram of online repairing electric arc furnace furnace wall of the present invention water-cooled block.
Accompanying drawing identifies
1, electric arc furnace furnace shell 2, leak source 3, soldering perforate
4, cooling water inlet pipe 5, cooling water outlet pipe 6, steel water-cooled tube
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention will be further described in detail.
As shown in Figure 1 and Figure 2, electric arc furnace furnace wall water-cooled block is tubular structure, and its material is iron and steel, be welded to form by steel pipe solid matter, be positioned at outside electric arc furnace furnace shell 1, steel water-cooled tube 6 diameter is usually at 100mm, each water-cooled block is equipped with Inlet and outlet water passage, and inner logical recirculated water is used for cooling.After finding that the furnace wall water-cooled block being positioned at arc furnace inside leaks, find water-cooled block leak source 2 position online accurately, and mark is carried out on leakage point in the other direction steel water-cooled tube 6 tube wall, timely closedown furnace wall leaks the cooling water inlet pipe 4 of water-cooled block and the valve of cooling water outlet pipe 5, pull down Inlet and outlet water metallic hose, the recirculated cooling water leaked in water-cooled block is cleaned out.Cut soldering perforate 3 open with flame cutting instrument, by soldering perforate 3 welding tool cut open by good for the soldering of inner leak source 2, and then soldering perforate 3 soldering of being cut outside is good; After completing soldering work, the metallic water pipe pulled down connected, open Inlet and outlet water valve, open cooling circulating water, recover electric arc furnace smelting after normal, this is repaired only about 40 minutes consuming time.
It should be noted last that, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted.Although with reference to embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, modify to technical scheme of the present invention or equivalent replacement, do not depart from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (3)
1. an online method of repairing electric arc furnace furnace wall water-cooled block, comprises the following steps:
1) telltale mark water-cooled block leakage point: determine water-cooled block leak source position online, and make marks on leakage point in the other direction water-cooled tube tube wall;
2) leakage point is closed;
3) soldering leakage point: leakage point opposite direction water-cooled tube tube wall mark cuts out soldering perforate described in step 1), by soldering perforate, leak source soldering is good, the then good soldering perforate of soldering.
2. the method for online repairing electric arc furnace furnace wall according to claim 1 water-cooled block, is characterized in that, use flame cutting instrument to cut out soldering perforate described in step 3).
3. the method for online repairing electric arc furnace furnace wall according to claim 1 water-cooled block, is characterized in that, use the good soldering perforate of electric welding soldering described in step 3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310317625.6A CN103361467B (en) | 2013-07-25 | 2013-07-25 | Method for online repairing furnace-wall water cooling block of arc furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310317625.6A CN103361467B (en) | 2013-07-25 | 2013-07-25 | Method for online repairing furnace-wall water cooling block of arc furnace |
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| Publication Number | Publication Date |
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| CN103361467A CN103361467A (en) | 2013-10-23 |
| CN103361467B true CN103361467B (en) | 2015-03-18 |
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| CN201310317625.6A Active CN103361467B (en) | 2013-07-25 | 2013-07-25 | Method for online repairing furnace-wall water cooling block of arc furnace |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103591804B (en) * | 2013-11-28 | 2015-01-14 | 甘肃维新工程设备有限公司 | Method for repairing lining brick of steel structure lining brick equipment |
| CN106514127A (en) * | 2015-09-09 | 2017-03-22 | 上海上电漕泾发电有限公司 | Water-cooling wall pipe replacing process |
| CN114918633B (en) * | 2022-06-27 | 2023-07-14 | 宝武集团鄂城钢铁有限公司 | Method for repairing water leakage at root parts of copper pipe and copper cooling wall |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0387425A1 (en) * | 1989-03-12 | 1990-09-19 | MARCEGAGLIA S.p.A. | Apparatus for the continuous production of small-diameter welded pipes |
| CN2474973Y (en) * | 2001-03-09 | 2002-01-30 | 烟台冶金水冷件厂 | Steel melting electric arc furnace tube type water cooled copper furnace wall |
| CN101333569A (en) * | 2007-06-28 | 2008-12-31 | 上海梅山钢铁股份有限公司 | Repairing method for cooling staveleakage |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0742492B2 (en) * | 1987-09-08 | 1995-05-10 | 住友金属工業株式会社 | Repair method for stave cooler wear part on stave furnace wall of blast furnace |
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2013
- 2013-07-25 CN CN201310317625.6A patent/CN103361467B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0387425A1 (en) * | 1989-03-12 | 1990-09-19 | MARCEGAGLIA S.p.A. | Apparatus for the continuous production of small-diameter welded pipes |
| CN2474973Y (en) * | 2001-03-09 | 2002-01-30 | 烟台冶金水冷件厂 | Steel melting electric arc furnace tube type water cooled copper furnace wall |
| CN101333569A (en) * | 2007-06-28 | 2008-12-31 | 上海梅山钢铁股份有限公司 | Repairing method for cooling staveleakage |
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| CN103361467A (en) | 2013-10-23 |
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