CN108330244A - A kind of online restorative procedure of converter flue leak - Google Patents
A kind of online restorative procedure of converter flue leak Download PDFInfo
- Publication number
- CN108330244A CN108330244A CN201810027841.XA CN201810027841A CN108330244A CN 108330244 A CN108330244 A CN 108330244A CN 201810027841 A CN201810027841 A CN 201810027841A CN 108330244 A CN108330244 A CN 108330244A
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- CN
- China
- Prior art keywords
- flue
- converter
- rope ladder
- steel pipes
- service personnel
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/38—Removal of waste gases or dust
- C21C5/40—Offtakes or separating apparatus for converter waste gases or dust
-
- 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
- Y02P10/25—Process efficiency
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
A kind of online restorative procedure of converter flue leak, belongs to converter installation method for maintaining technical field, for being repaired online to converter flue leak.Its technical solution is：Service personnel is entered by rope ladder inside flue, and maintenance platform is built in flue.Then the serious position of converter flue transducer wall's abrasion is repaired：Flue pipe is ground and is cut off at book, is welded after inside inlays new pipe, be can't see position and put in a skylight in outside and welded, repair welding is carried out to wearing lighter position.After reparation, Shot Blasting is carried out to repairing intact position after suppressing examination water, sprays nickel chromium triangle wearing layer.The present invention is that converter flue method for maintaining is pioneering, has broken the method for maintaining of routine replacement flue, extends the service life of converter flue, while greatly shortening maintenance time, effectively reduces the labor intensity of maintenance personal, improves efficiency.The present invention reduces spare parts consumption costs, reduce maintenance cost, ensure that the continuity of converter producing.
Description
Technical field
The present invention relates to a kind of method carrying out online REPAIR WELDING to converter flue leak under high temperature environment, belongs to and turn
Furnace apparatus method for maintaining technical field.
Background technology
In iron and steel enterprise, converter flue is one of main corollary equipment of pneumatic steelmaking.The use environment of converter flue
Very severe, converter flue will collect flue gas to the maximum extent at work, bear very high furnace gas temperature with it is acutely frequent
Temperature change.The flue-gas temperature produced in steelmaking process is up to 1000 more to be spent, and contains sulphur and its compound, high temperature sludge, stone
The a large amount of dust such as ash, therefore converter flue is designed with prodigious heating surface, for reducing flue-gas temperature.Converter flue is generally with close
Comb forms heating surface, and heating surface subjects washing away for solid material, the corrosion of sour gas and high temperature cabonization.Due to long-term
It works under above-mentioned environment, especially heating surface subjects sulphur gas corrosion, high-temperature oxydation and erosive wear, easily on water cooling tube
A large amount of Bamboo-shaped heat fatigue crackings, point are generated, perforation leak is caused, influences the production efficiency of steel-making, while being brought to production
Security risk.The leakage area of converter flue generally in one section with middle two-phase method orchid junction, in 11.2 meters of a segment length, directly
2.6 meters of diameter, away from more than 20 rice of revolving furnace body height.It is at present direct replacement flue to the method for maintaining of converter flue leak.It replaces
Flue lower removable petticoat pipe, mobile section are removed when flue, build the inspection platform of 6 meters or so of height, welds 4 hoisting hooks
Ear, overhead traveling crane can not directly be hung out, and be had bad luck flue to 17 meters of platforms from 21 meters of eminences with 2 10T electric blocks, then hung with overhead traveling crane
Go out, flue replaces 48 hours used times or more, and the personnel amount for participating in construction is more, and quantities is larger, and maintenance cost is high, especially shadow
The steel quality and yield for having rung converter producing become long-time open question in converter producing repair.
Invention content
It is this to repair online technical problem to be solved by the invention is to provide a kind of online restorative procedure of converter flue leak
Compound method can be under the premise of being changed without flue, and the converter flue to leak occurs is repaired online, can be greatly shortened
Maintenance time, it thoroughly solves the problems, such as that flue leak is welded, while spare parts consumption can be reduced, ensures the safety of converter producing
Direct motion.
Solving the technical solution of above-mentioned technical problem is：
A kind of online restorative procedure of converter flue leak, it is carried out using following steps：
A. converter body is shaken to horizontal position, from 46 meters of flue end manholes of converter will repair rope ladder continue into；
B. rope ladder is continued into flue mobile section from 46 meters of flue end manholes of converter；
C. service personnel enters furnace body, and flue mobile section is reached using rope ladder；
D. service personnel from flue mobile section climb rope ladder into from one section of upper flange, at two sections of external lower flanges；
E. service personnel with scaffold in flue at an intersegmental part upper flange, in set for this platform at two sections of external lower flanges；
F. on platform, service personnel detects the serious position of converter flue transducer wall's abrasion, and pipeline is ground and is cut off at book, inlays new
Pipe, welds the new pipe inlayed in inside；
G. it is put in a skylight outside flue to can't see position and is welded, then the position welding that will put in a skylight；
H. repair welding is carried out to wearing lighter position, to increase pipe thickness, improves flue service life；
I. examination water is suppressed；
J. Shot Blasting is carried out to repairing intact position, sprays nickel chromium triangle wearing layer；
K. platform is removed, service personnel exits from the manhole of flue end.
The above-mentioned online restorative procedure of converter flue leak, the rope ladder are to overhaul special rope ladder, two steel wire ropes of rope ladder
It is made with more short steel pipes, short steel pipes both ends WELD NUTS, two steel wire ropes are passed through from the nut at short steel pipes both ends respectively, short
Steel pipe is perpendicular with steel wire rope, using vachette clasp by the more spaced and parallel fixations of short steel pipes on a steel cord, avoid short steel pipes with
It is slided between steel wire rope.
The above-mentioned online restorative procedure of converter flue leak, a diameter of 8mm of the steel wire rope of the rope ladder, length 50m are soft
A diameter of 16mm of the short steel pipes of ladder, length 350mm, the spacing distance between adjacent short steel pipes are 400mm.
The beneficial effects of the invention are as follows：
The restorative procedure that the present invention uses is that service personnel enters inside flue, is carried out to the serious position of converter flue transducer wall's abrasion
Repair suppresses examination water and carries out Shot Blasting to repairing intact position again, sprays nickel chromium triangle wearing layer after repairing.
It is pioneering that the online restorative procedure method of the present invention, which is converter flue method for maintaining,.This method has broken routine replacement
The method for maintaining of flue extends the service life of converter flue, it is ensured that the service life of equipment, while when greatly shortening repair
Between, the labor intensity of maintenance personal is effectively reduced, efficiency is improved.The present invention thoroughly solves the difficulty of flue leak welding
Topic, reduces spare parts consumption cost, reduces maintenance cost, ensure that the continuity of converter producing, by measuring and calculating, can create every year
More than 100 ten thousand yuan of economic benefit has significant economic benefit.
Specific implementation mode
The present invention is a kind of method carrying out online REPAIR WELDING to converter flue leak under high temperature environment.It is this online
Restorative procedure is：Service personnel is entered by rope ladder inside flue, and maintenance platform is built in flue.Then to converter flue pipe
Wall serious wear position repairs：Flue pipe is ground and is cut off at book, is welded after inside inlays new pipe, can't see portion
Position is put in a skylight in outside is welded, and repair welding is carried out to wearing lighter position.After reparation, suppress after trying water to having repaired
Good position carries out Shot Blasting, sprays nickel chromium triangle wearing layer.
This online restorative procedure comprises the concrete steps that：
A. converter body is shaken to horizontal position, from 46 meters of flue end manholes of converter will repair rope ladder continue into；
B. rope ladder is continued into flue mobile section from 46 meters of flue end manholes of converter；
C. service personnel enters furnace body, and flue mobile section is reached using rope ladder；
D. service personnel from flue mobile section climb rope ladder into from one section of upper flange, at two sections of external lower flanges；
E. service personnel with scaffold in flue at an intersegmental part upper flange, in set for this platform at two sections of external lower flanges；
F. on platform, service personnel detects the serious position of converter flue transducer wall's abrasion, and pipeline is ground and is cut off at book, inlays new
Pipe, welds the new pipe inlayed in inside；
G. it is put in a skylight outside flue to can't see position and is welded, then the position welding that will put in a skylight；
H. repair welding is carried out to wearing lighter position, to increase pipe thickness, improves flue service life；
I. examination water is suppressed；
J. Shot Blasting is carried out to repairing intact position, sprays nickel chromium triangle wearing layer；
K. platform is removed, service personnel exits from the manhole of flue end.
When carrying out above-mentioned online restorative procedure, need to make rope ladder, rope ladder is to overhaul special rope ladder.Make the side of rope ladder
Method is：
It is made of two steel wire ropes and Duo Gen short steel pipes, short steel pipes both ends WELD NUTS, two steel wire ropes are respectively from short steel pipes two
It is passed through in the nut at end, short steel pipes are perpendicular with steel wire rope, and steel wire is fixed on by more short steel pipes are spaced and parallel using vachette clasp
On rope, avoid sliding between short steel pipes and steel wire rope.
The steel wire rope for making rope ladder is diameter 8mm, length 50m, a diameter of 16mm of the short steel pipes of rope ladder, and length is
350mm, the spacing distance between adjacent short steel pipes are 400mm.
Claims (3)
1. a kind of online restorative procedure of converter flue leak, it is characterised in that：It is carried out using following steps：
A. converter body is shaken to horizontal position, from 46 meters of flue end manholes of converter will repair rope ladder continue into；
B. rope ladder is continued into flue mobile section from 46 meters of flue end manholes of converter；
C. service personnel enters furnace body, and flue mobile section is reached using rope ladder；
D. service personnel from flue mobile section climb rope ladder into from one section of upper flange, at two sections of external lower flanges；
E. service personnel with scaffold in flue at an intersegmental part upper flange, in set for this platform at two sections of external lower flanges；
F. on platform, service personnel detects the serious position of converter flue transducer wall's abrasion, and pipeline is ground and is cut off at book, inlays new
Pipe, welds the new pipe inlayed in inside；
G. it is put in a skylight outside flue to can't see position and is welded, then the position welding that will put in a skylight；
H. repair welding is carried out to wearing lighter position, to increase pipe thickness, improves flue service life；
I. examination water is suppressed；
J. Shot Blasting is carried out to repairing intact position, sprays nickel chromium triangle wearing layer；
K. platform is removed, service personnel exits from the manhole of flue end.
2. the online restorative procedure of converter flue leak according to claim 1, it is characterised in that：The rope ladder is that maintenance is special
With rope ladder, two steel wire ropes of rope ladder and Duo Gen short steel pipes make, and short steel pipes both ends WELD NUTS, two steel wire ropes are respectively from short
It is passed through in the nut at steel pipe both ends, short steel pipes are perpendicular with steel wire rope, using vachette clasp by the more spaced and parallel fixations of short steel pipes
On a steel cord, it avoids sliding between short steel pipes and steel wire rope.
3. the online restorative procedure of converter flue leak according to claim 2, it is characterised in that：The steel wire rope of the rope ladder
A diameter of 8mm, length 50m, a diameter of 16mm of the short steel pipes of rope ladder, length 350mm, between adjacent short steel pipes between
Gauge is from for 400mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810027841.XA CN108330244A (en) | 2018-01-11 | 2018-01-11 | A kind of online restorative procedure of converter flue leak |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810027841.XA CN108330244A (en) | 2018-01-11 | 2018-01-11 | A kind of online restorative procedure of converter flue leak |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108330244A true CN108330244A (en) | 2018-07-27 |
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ID=62924216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810027841.XA Pending CN108330244A (en) | 2018-01-11 | 2018-01-11 | A kind of online restorative procedure of converter flue leak |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108330244A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113199117A (en) * | 2021-05-08 | 2021-08-03 | 中国化学工程第三建设有限公司 | Method for repairing stainless steel pipeline welding seam |
| CN115646073A (en) * | 2022-09-26 | 2023-01-31 | 山东钢铁集团日照有限公司 | Method for repairing refractory material by short-time damping down of blast furnace cyclone dust collector |
-
2018
- 2018-01-11 CN CN201810027841.XA patent/CN108330244A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113199117A (en) * | 2021-05-08 | 2021-08-03 | 中国化学工程第三建设有限公司 | Method for repairing stainless steel pipeline welding seam |
| CN115646073A (en) * | 2022-09-26 | 2023-01-31 | 山东钢铁集团日照有限公司 | Method for repairing refractory material by short-time damping down of blast furnace cyclone dust collector |
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Application publication date: 20180727 |