CN112410503B - Converter mouth plugging method - Google Patents
Converter mouth plugging method Download PDFInfo
- Publication number
- CN112410503B CN112410503B CN202011285491.0A CN202011285491A CN112410503B CN 112410503 B CN112410503 B CN 112410503B CN 202011285491 A CN202011285491 A CN 202011285491A CN 112410503 B CN112410503 B CN 112410503B
- Authority
- CN
- China
- Prior art keywords
- disc
- bracing piece
- converter
- scrap steel
- mouth
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 36
- 239000010959 steel Substances 0.000 claims abstract description 36
- 238000003466 welding Methods 0.000 claims abstract description 16
- 239000002699 waste material Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 7
- 238000005520 cutting process Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000009851 ferrous metallurgy Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
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
- C21C5/42—Constructional features of converters
- C21C5/46—Details or accessories
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
The invention relates to a converter mouth plugging method, which comprises the steps of firstly welding a disc with the diameter of four meters by using a six-millimeter checkered plate, fixedly connecting the disc with a scrap steel hopper through a first supporting rod, then opening a converter fire door, driving the scrap steel hopper to move towards a converter mouth by a crane, placing the disc on the converter mouth, finally enabling an operator to reach the first supporting rod through an operation platform, cutting off the first supporting rod, driving the scrap steel hopper to reset by the crane, and completing the plugging of the converter mouth. According to the invention, the checkered plates and the seams of the checkered plates are fully welded, so that the condition of water leakage at the seams is avoided, and the plugging effect is improved; the scrap steel bucket and the disc are connected into a whole through the first support rod, the scrap steel bucket is lifted through the travelling crane, and the disc is conveyed to a furnace mouth, so that the labor intensity of operators is reduced, and the operation efficiency is improved; the stability of the fixedly connected disc is improved by symmetrically arranging the horizontal rods; through the setting of second bracing piece to improve the support intensity of first bracing piece.
Description
Technical Field
The invention relates to the field of converters, in particular to the technical field of converter mouths, and particularly relates to a converter mouth plugging method.
Background
In a converter production line of a ferrous metallurgy enterprise, a converter is used as high-temperature molten steel smelting equipment, once water enters the converter, the water is contacted with the high-temperature molten steel, the danger of explosion is generated, and in order to ensure safe production, the water is strictly forbidden to enter the converter.
In the process of blowing out and maintaining, when a leakage point of a converter flue cannot be welded, in part of special time intervals, in order to ensure the development of other operation projects, a converter mouth must be upward, and in order to prevent the flue from leaking water and entering the converter, the converter mouth needs to be blocked.
In the past, when a furnace mouth is plugged, a contour plate is adopted for plugging, an operator stands on a fire damper, the contour plate is placed inside a scrap steel bucket, the scrap steel bucket is hung to the position of the furnace mouth by using a crane, and the operator pushes the contour plate in the scrap steel bucket to the furnace mouth to plug the furnace mouth.
This method of operation has the following problems:
1. when the contour plate is installed, two persons are needed to push the contour plate to a furnace mouth on the fire doors on two sides respectively, the contour plate is large in size and difficult to push, the installation position of the contour plate is not convenient to master simultaneously, repeated operation is needed, and the labor intensity is high.
2. Because the contour plate is thin, after being baked at high temperature, the contour plate is deformed and collapsed, and the water retaining effect is poor.
At present, a safe and efficient plugging method is not available, the plugging effect is improved, the furnace mouth plugging speed is increased, and the labor intensity is reduced.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a converter mouth plugging method, which overcomes the defects of low efficiency, high labor intensity and poor plugging effect in the existing plugging method.
The invention is realized by the following technical scheme, and the method for plugging the converter mouth comprises the following steps:
a. welding six-millimeter pattern plates to manufacture a disc with the diameter of four meters, and fully welding seams between the pattern plates;
b. welding a first support rod which extends horizontally on the scrap steel bucket, wherein the bottom end of the first support rod is welded with the top surface of the disc;
c. opening a converter fire door, driving a travelling crane to drive a waste steel bucket to move towards a furnace mouth, and placing a disc on the furnace mouth;
d. the operating personnel reach first bracing piece department through the operation platform, cut off first bracing piece, and the driving drives the scrap steel fill and resets, accomplishes the shutoff of fire door promptly.
According to the invention, the checkered plates and the seams of the checkered plates are fully welded, so that the condition of water leakage at the seams is avoided, and the plugging effect is improved; the scrap steel bucket and the disc are connected into a whole through the first supporting rod, the disc is conveyed to the furnace mouth through the travelling crane lifting scrap steel bucket, the labor intensity of operating personnel is reduced, and the operating efficiency is improved.
Preferably, the top surface of the disc is welded with a bracket shaped like a Chinese character 'jing'. This preferred scheme improves the intensity of disc through the setting of support, has effectively reduced the bending deformation of disc in the use, has improved the shutoff effect of fire door.
Preferably, the first support rod comprises a horizontal rod with a bottom end welded on the top surface of the circular disc, and the two horizontal rods are radially and symmetrically arranged around the circular disc. This preferred scheme improves the stability of rigid coupling disc through the setting of horizon bar symmetry.
Preferably, the steel scrap bucket is further welded with a second support rod located above the first support rod and extending from the disc, one end of the second support rod extending towards the original disc is welded on the first support rod to form a first welding point, and the cutting point of the first support rod is located between the disc and the first welding point. This preferred scheme is through the setting of second bracing piece to improve the support intensity of first bracing piece.
Preferably, the horizontal rods are the same in length, and a connecting line of one ends, far away from the scrap steel bucket, of the two horizontal rods is intersected with the axis of the disc. The stability of rigid coupling disc is improved in this preferred scheme's setting.
The invention has the beneficial effects that: by adopting the full-welding mode between the checkered plates and the seams of the checkered plates, the condition of water leakage at the seams is avoided, and the plugging effect is improved; the scrap steel bucket and the disc are connected into a whole through the first support rod, the scrap steel bucket is lifted through the travelling crane, and the disc is conveyed to a furnace mouth, so that the labor intensity of operators is reduced, and the operation efficiency is improved; the stability of the fixedly connected disc is improved by symmetrically arranging the horizontal rods; through the setting of second bracing piece to improve the support intensity of first bracing piece.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a partial plan view of a scrap box;
FIG. 3 is a schematic top view of the puck;
shown in the figure:
1. the device comprises a travelling crane, 2, a scrap steel bucket, 3, a placing platform, 4, an inclined rod, 5, a horizontal rod, 6, a cutting point, 7, a disc, 8, an operation platform, 9, a converter fire door, 10, a converter mouth, 11 and a flue.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the present solution is explained below by way of specific embodiments.
Referring to the attached drawings 1-3, the invention discloses a converter mouth plugging method, which comprises the following steps:
a. welding six-millimeter checkered plates to manufacture a disc 7 with the diameter of a meter, fully welding seams between the checkered plates, using channel steel as a reinforcing rib, welding the disc 7 into a bracket in a shape like a Chinese character 'jing', and taking one surface of the welded bracket as the top surface of the disc 7;
b. horizontal rods 5 extending towards a furnace opening are welded on two side surfaces of the waste steel hopper 2, the horizontal rods 5 are six-meter-long channel steel, the length of the horizontal rods 5 extending out of a discharge opening of the waste steel hopper 2 is four meters, the bottom ends of the two horizontal rods 5 are welded with the top surface of a disc 7, the two horizontal rods 5 are radially and symmetrically arranged relative to the disc 7, a connecting line of one ends of the two horizontal rods 5 far away from the waste steel hopper 2 is intersected with the axis of the disc 7, an inclined rod 4 which is located above the horizontal rods 5 and extends towards the disc 7 is further arranged on the waste steel hopper 2, and one end of the inclined rod 4 far away from the waste steel hopper 2 is welded on the horizontal rods 5;
c. opening a converter fire damper 9, commanding a travelling crane to lift a waste steel hopper 2, moving a disc 7 into a gap between a converter mouth 10 and a flue 11 through the waste steel hopper 2, commanding the travelling crane to descend, enabling the disc 7 to fall on the converter mouth, operating the fire damper to move in a reverse direction, and enabling the fire damper to be close to a horizontal rod 5 between the waste steel hopper 2 and the disc 7;
d. an operator stands on the operation platform 8 and reaches a cutting point 6 between the disc 7 and the inclined rod 4, cuts the horizontal rod 5 along the cutting position by gas cutting, and commands the travelling crane to lift the scrap steel bucket 2 away to finish the plugging of the furnace mouth.
When the disc 7 for plugging the furnace mouth needs to be removed, the fire door is opened, and the converter is shaken, so that the disc 7 for plugging the furnace mouth automatically slides down on the placing platform 3 in front of the converter.
Of course, the above description is not limited to the above examples, and the undescribed technical features of the present invention can be implemented by or using the prior art, and will not be described herein again; while the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes, modifications, additions and substitutions may be made without departing from the spirit of the invention and the scope of the invention as defined in the accompanying claims.
Claims (2)
1. A converter mouth plugging method is characterized by comprising the following steps:
a. a disc (7) with the diameter of four meters is manufactured by welding six-millimeter pattern plates, seams between the pattern plates are fully welded, and a bracket shaped like a Chinese character 'jing' is welded on the top surface of the disc (7);
b. welding a first support rod extending horizontally on the scrap steel bucket (2), wherein the bottom end of the first support rod is welded with the top surface of the disc (7), the first support rod comprises horizontal rods (5) with the bottom ends welded on the top surface of the disc (7), the two horizontal rods (5) are radially and symmetrically arranged relative to the disc (7), the lengths of the horizontal rods (5) are the same, and a connecting line of one ends, far away from the scrap steel bucket (2), of the two horizontal rods (5) is intersected with the axis of the disc (7);
c. opening a converter fire door (9), driving the waste steel hopper (2) to move towards a furnace mouth by a crane, and placing the disc (7) on the furnace mouth;
d. the operating personnel reach first bracing piece department through operation platform (8), cut off first bracing piece, and the driving drives scrap steel fill (2) and resets, accomplishes the shutoff of fire door promptly.
2. The method for plugging the converter mouth of the converter according to claim 1, wherein: still the welding has the second bracing piece that is located first bracing piece top and disc (7) and extends on scrap steel fill (2), the one end welding that the second bracing piece extends to the former dish forms first welding point on first bracing piece, and the cut-off point (6) of first bracing piece are located between disc (7) and the first welding point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011285491.0A CN112410503B (en) | 2020-11-17 | 2020-11-17 | Converter mouth plugging method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011285491.0A CN112410503B (en) | 2020-11-17 | 2020-11-17 | Converter mouth plugging method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112410503A CN112410503A (en) | 2021-02-26 |
| CN112410503B true CN112410503B (en) | 2022-05-17 |
Family
ID=74831467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011285491.0A Expired - Fee Related CN112410503B (en) | 2020-11-17 | 2020-11-17 | Converter mouth plugging method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112410503B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4479637A (en) * | 1982-09-01 | 1984-10-30 | National Steel Corporation | Apparatus for and method of repairing bottom lining of a converter |
| CN102559989A (en) * | 2010-12-10 | 2012-07-11 | 天津天铁冶金集团有限公司 | Special waste steel bucket for clearing converter mouth |
| CN104673955B (en) * | 2015-03-05 | 2016-11-23 | 山东钢铁股份有限公司 | A kind of converter blowing out heat preserving method |
| CN204824954U (en) * | 2015-08-03 | 2015-12-02 | 中冶南方工程技术有限公司 | Converter mouth heat preservation device |
| CN211311505U (en) * | 2019-12-02 | 2020-08-21 | 通化钢铁股份有限公司 | Converter mouth closing device |
-
2020
- 2020-11-17 CN CN202011285491.0A patent/CN112410503B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN112410503A (en) | 2021-02-26 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220517 |
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