CN110385562B - Preheating section and final cooling section spray box processing method - Google Patents
Preheating section and final cooling section spray box processing method Download PDFInfo
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- CN110385562B CN110385562B CN201811318265.0A CN201811318265A CN110385562B CN 110385562 B CN110385562 B CN 110385562B CN 201811318265 A CN201811318265 A CN 201811318265A CN 110385562 B CN110385562 B CN 110385562B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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Abstract
The invention discloses a preheating section and final cooling section spray box processing method, which comprises the following steps: selecting materials, and processing the materials into a nozzle plate, two outer side plates and a rear cover plate; mounting a plurality of nozzle plates by using an assembly platform to form a plurality of nozzles; after the nozzle plate and the outer side plate are assembled, welding for the first time, pressing the nozzle plate by using a balance weight in the welding process, and fixing the outer side plate on the assembling platform; assembling a rear cover plate on the upper surface of the outer side plate at the rear end part; and welding the outer side plate and the nozzle plate again in a mode of welding from the middle to the front end and the rear end until the outer side plate and the nozzle plate are welded into a preheating section spray box or a final cooling section spray box. The method can control the precision and welding deformation of the parts, reduce the size error of the parts, ensure the equipment precision under the condition of batch production, has strong repeatability, and can better improve the manufacturing speed while ensuring the quality.
Description
Technical Field
The invention relates to a spray box processing and manufacturing method, in particular to a spray box processing method for a preheating section and a final cooling section of an annealing furnace of a cold rolling vertical continuous annealing unit and a galvanizing unit.
Background
The spray box at the preheating section and the spray box at the final cooling section of the annealing furnace of the cold rolling vertical continuous annealing unit and the galvanizing unit are important equipment of the unit, and the planeness and the opening size of a nozzle are directly related to the preheating speed and the cooling speed of the strip steel. The length of the spray box is long and reaches more than 10m, and the flatness and welding deformation of the spray nozzle are difficult to control. The height of the spray box is low, and the welding seam on the inner side cannot be welded in a conventional mode.
Therefore, the present inventors have made extensive studies on how to design a method for manufacturing a preheating stage and a final cooling stage spray box which can solve the above-mentioned problems.
Disclosure of Invention
The invention aims to provide a spraying box processing method for a preheating section and a final cooling section, which can control the precision and welding deformation of parts, reduce the size error of the parts, ensure the equipment precision under the condition of batch production, has strong repeatability, and can better improve the manufacturing speed while ensuring the quality.
In order to achieve the aim, the invention provides a preheating section and final cooling section spray box processing method, which comprises the following steps:
(1) selecting materials, and processing the materials into a nozzle plate, two outer side plates and a rear cover plate;
(2) mounting a plurality of nozzle plates by using an assembly platform to form a plurality of nozzles;
(3) after the nozzle plate and the outer side plate are assembled, welding for the first time, pressing the nozzle plate by using a balance weight in the welding process, and fixing the outer side plate on the assembling platform;
(4) assembling a rear cover plate on the upper surface of the outer side plate at the rear end part;
(5) and welding the outer side plate and the nozzle plate again by adopting a welding mode from the middle to the front end and the rear end until the outer side plate and the nozzle plate are welded into a preheating spray box or a final cooling spray box.
Preferably, the material in step (1) is a raw flat plate.
Preferably, the step (1) uses laser cutting and drilling to machine the material into the nozzle plate material, the two outer side plates and the rear cover plate.
Preferably, two bending lines are sprayed at the position of the pre-bending edge on the cut nozzle plate material, and the edge is folded according to the bending lines during edge folding to form the nozzle plate.
Preferably, the flanging angle of the nozzle plate is detected by using an angle die, and the flanging angle ensures that the width error of a single nozzle plate is +/-0.5 mm.
Preferably, the assembling platform in the step (2) is manufactured according to the height difference of each nozzle, and an enlargement sample is performed on the assembling platform, namely, a line is scribed on the assembling platform according to the size of the spray box, and an assembling center line, a nozzle position line and an outer side plate line of the spray box are scribed.
Preferably, when assembling the nozzle plate and the outer plate, the specific steps include:
A. leveling the assembly platform to ensure that the flatness of the nozzle position formed between every two adjacent nozzle plates on the assembly platform is less than or equal to 2 mm;
B. a control block which can control the width of the nozzle is arranged between two adjacent nozzle plates;
C. according to the height requirement of the nozzles, height adjusting blocks are respectively additionally arranged on two sides clinging to the control block so as to adjust the step height difference existing between the nozzles;
D. and stop blocks for abutting against the outer side plate are added on two sides of the outer side plate line.
Preferably, in the step (3), after the nozzle plate and the outer side plate are assembled, the inner weld seam between the outer side plate and each nozzle plate is welded.
Preferably, the step (5) welds the outer plate and the nozzle plate by welding along the left and right sides simultaneously.
Preferably, a clump weight or section steel is used to press the spray box during the whole welding process.
After the scheme is adopted, the preheating section spraying box and the final cooling section spraying box processing method of the invention are designed through the processing steps, and because the lengths of the preheating section spraying box and the final cooling section spraying box of the annealing furnace of the cold rolling vertical continuous annealing unit and the galvanizing unit are longer, the manufacturing precision requirement is high, and the preheating section spraying box and the final cooling section spraying box are all in a thin plate box structure without any section steel support, the invention improves the aspects of dimensional precision control, welding process, assembly process and the like by adopting laser blanking and forming for blanking of parts, can control the precision and welding deformation of the parts, also reduces the dimensional error of the parts, and ensures the equipment precision under the condition of batch production. The processing method has strong repeatability, and can better improve the manufacturing speed while ensuring the quality.
Drawings
FIG. 1 is a schematic view of the front view structure of a spray box at the preheating section of an annealing furnace of a cold rolling vertical continuous annealing unit and a galvanizing unit according to the invention;
FIG. 2 is a schematic view of the top view structure of the spray box of the preheating section of the annealing furnace of the cold rolling vertical continuous annealing unit and the galvanizing unit of the invention;
FIG. 3 is a schematic sectional view taken along line A-A of FIG. 2;
FIG. 4 is a schematic diagram of the front view structure of the assembly platform in the spray box processing process of the preheating section of the annealing furnace of the cold rolling vertical continuous annealing unit and the galvanizing unit of the invention;
FIG. 5 is a schematic view of the top view structure of the assembly platform in the spray box processing process of the preheating section of the annealing furnace of the cold rolling vertical continuous annealing unit and the galvanizing unit of the invention;
FIG. 6 is a schematic view of the front view structure of the spray box at the final cooling section of the annealing furnace of the cold rolling vertical continuous annealing unit and the galvanizing unit of the invention;
FIG. 7 is a schematic view of the top view structure of the spray box of the final cooling section of the annealing furnace of the cold rolling vertical continuous annealing unit and the galvanizing unit.
Detailed Description
The invention will be elucidated on the basis of an embodiment shown in the drawing. The embodiments disclosed herein are to be considered in all respects as illustrative and not restrictive. The scope of the present invention is not limited to the following description of the embodiments, but is defined only by the scope of the claims, and includes all modifications having the same meaning as and within the scope of the claims.
The method for processing the spray box in the preheating section and the final cooling section is described below by combining specific embodiments.
Referring to fig. 1 to 3, the method for processing the spray box of the preheating section of the annealing furnace of the cold rolling vertical continuous annealing unit and the galvanizing unit comprises the following steps:
(1) selecting materials, because the inherent stress of an original flat plate is smaller than that of a rolled plate, in order to reduce stress deformation, selecting the original flat plate as the materials, processing the materials into a plurality of nozzle plate materials by adopting laser cutting and drilling, two outer side plates 1 and a rear cover plate 2, adopting laser blanking with high precision, and ensuring the blanking deformation degree well, providing good prior conditions for assembly and subsequent welding, spraying two bending lines at the position of pre-bending edge on each cut nozzle plate material, spraying the bending lines in advance because the original flat plate is thin and easy to deform, and difficult to control the size, in order to ensure the flanging forming size precision of the nozzle plate 3, flanging according to the bending lines during flanging to form the nozzle plate 3, ensuring that the error is controlled within +/-0.5 mm during flanging forming, and providing high-quality forming guarantee in a large number of flanging procedures, the edge folding angle of the nozzle plate 3 is detected by adopting an angle die, and a reinforcing rib 8 is welded on each nozzle plate 3;
(2) in order to ensure the assembly accuracy, the nozzle plates 3 are mounted together to form the nozzles 4 by the mounting platform 5, and the assembly of the nozzle box by the mounting platform 5 can reduce the dimensional error of the components. Because of the size of the nozzles 4, there is a height difference, and the back cover plate 2 is a flat plate. According to this structure, the mounting platform 5 is designed according to the height difference of the nozzle 4 (see fig. 4 and 5). And performing amplification on the assembly platform 5, namely scribing on the assembly platform 5 according to the size of the spray box, and scribing an assembly central line, a nozzle position line and an outer side plate line of the spray box. When assembling the nozzle plate 3 and the outer plate 1, the specific steps include:
A. leveling the assembly platform 5 to ensure that the planeness of the position of a nozzle 4 formed between every two adjacent nozzle plates 3 placed on the assembly platform 5 is less than or equal to 2 mm;
B. in order to ensure the size of the nozzle 4 and the distance between two nozzles 4, a control block 6 capable of controlling the width of the nozzle 4 is arranged between two adjacent nozzle plates 3;
C. according to the height requirement of the nozzles 4, height adjusting blocks 7 are respectively added on two sides of the clinging control block 6 to adjust the step height difference existing between the nozzles 4;
D. the stop blocks used for abutting against the outer side plate 1 are added on two sides of the outer side plate line, so that the outer side plate 1 is prevented from being out of position or deformed;
(3) the nozzle plate 3 and the outer side plate 1 are assembled and then welded for the first time, the nozzle plate 3 is pressed by a balance weight in the welding process, the outer side plate 1 is fixed on the assembly platform 5, the height of the spray box is only 350mm, so that after the nozzle plate 3 and the outer side plate 1 are assembled, inner side welding seams between the outer side plate 1 and each nozzle plate 3 are welded firstly, the spray box is of a symmetrical structure, the welding seams at two sides are symmetrical, if the spray box is manufactured in a direct welding mode, the plane of the formed spray box cannot meet the requirement, and the flatness of the nozzle 4 is out of tolerance, so that the spray box is welded symmetrically in the welding process, the welding direction is controlled, and the welding quality can be well guaranteed;
(4) assembling a rear cover plate 2 on the upper rear end part of the outer side plate 1;
(5) weld outer panel 1 and nozzle plate 3 once more, because the spray box is longer, length reaches more than 10m, in order to prevent both sides shrink inconsistent, adopt the symmetry welding, spray box both sides adopt two workman to carry out the welding simultaneously promptly, and go on from the middle to preceding, back both ends welding mode, weld into preheating the spray box until welding.
Adopt balancing weight or shaped steel to push down the spray box and go on in whole welding process.
The cold rolling vertical continuous annealing unit and the galvanizing unit annealing furnace preheating spray box are manufactured through the steps.
Referring to fig. 6 and 7, most steps of the method for processing the spray box at the final cooling section of the annealing furnace of the cold rolling vertical continuous annealing unit and the galvanizing unit of the invention are the same as those of the method for processing the preheating spray box described in fig. 1 to 3, and the same parts are not repeated, except that: the distance between the nozzles of the spray box at the final cooling section is larger than that between the nozzles at the preheating section, and the length of the welding seam is longer.
The cold rolling vertical continuous annealing unit and the galvanizing unit annealing furnace preheating section spray box processing method and the final cooling section spray box processing method are designed through the processing steps, and because the lengths of the cold rolling vertical continuous annealing unit and the galvanizing unit annealing furnace preheating section spray box and the final cooling section spray box are longer, the manufacturing precision requirement is high, and the cold rolling vertical continuous annealing unit and the galvanizing unit annealing furnace preheating section spray box and the final cooling section spray box are all in a thin plate box structure without any section steel support, the invention adopts laser blanking and forming for blanking of parts, improves the aspects of dimensional precision control, welding process, assembly process and the like, can control the precision and welding deformation of the parts, reduces the dimensional error of the parts, and ensures the equipment precision under the condition of batch production. The processing method has strong repeatability, and can better improve the manufacturing speed while ensuring the quality.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It is to be understood that the present invention is not limited to the embodiment methods, structures, and precise structures shown in the drawings, which have been described above, and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (8)
1. A preheating section and final cooling section spray box processing method is characterized by comprising the following steps:
(1) selecting materials, and processing the materials into a nozzle plate, two outer side plates and a rear cover plate;
(2) mounting a plurality of nozzle plates by using an assembly platform to form a plurality of nozzles;
(3) after the nozzle plate and the outer side plate are assembled, welding for the first time, pressing the nozzle plate by using a balance weight in the welding process, and fixing the outer side plate on the assembling platform;
(4) assembling a rear cover plate on the upper surface of the outer side plate at the rear end part;
(5) welding the outer side plate and the nozzle plate again in a mode of welding from the middle to the front end and the rear end until the outer side plate and the nozzle plate are welded into a preheating section spray box or a final cooling section spray box;
the assembling platform in the step (2) is manufactured according to the height difference of each nozzle, and amplification is carried out on the assembling platform, namely, scribing is carried out on the assembling platform according to the size of the spray box, and an assembling center line, a nozzle position line and an outer side plate line of the spray box are scribed;
when the nozzle plate and the outer side plate are assembled, the method specifically comprises the following steps:
A. leveling the assembly platform to ensure that the flatness of the nozzle position formed between every two adjacent nozzle plates on the assembly platform is less than or equal to 2 mm;
B. a control block which can control the width of the nozzle is arranged between two adjacent nozzle plates;
C. according to the height requirement of the nozzles, height adjusting blocks are respectively additionally arranged on two sides clinging to the control block so as to adjust the step height difference existing between the nozzles;
D. and stop blocks for abutting against the outer side plate are added on two sides of the outer side plate line.
2. The preheat section, finish cool section spray box processing method of claim 1, wherein the material in step (1) is a raw flat plate.
3. The preheating section and final cooling section spray box processing method according to claim 2, wherein the nozzle plate material, the two outer side plates and the rear cover plate are processed by the step (1) through laser cutting and drilling.
4. The preheating section and final cooling section spray box processing method according to claim 3, wherein two bending lines are sprayed at the position of the pre-bending edge on the cut nozzle plate material, and the nozzle plate is formed by performing edge folding according to the bending lines during edge folding.
5. The preheating section and final cooling section spray box processing method according to claim 4, wherein the flanging angle of the nozzle plate is detected by using an angle die, and the flanging angle ensures that the width error of a single nozzle plate is +/-0.5 mm.
6. The preheat section and finish cooling section spray box processing method of claim 1, wherein in the step (3), the inner weld seam between the outer plate and each nozzle plate is welded after the nozzle plate and the outer plate are assembled.
7. The preheat section and finish cold section spray box processing method of claim 1, wherein step (5) welds the outer panel and the tip plate by welding along the left and right sides simultaneously.
8. The method of claim 1, wherein the spray box is pressed by a weight block or a steel bar during the whole welding process.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811318265.0A CN110385562B (en) | 2018-11-07 | 2018-11-07 | Preheating section and final cooling section spray box processing method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811318265.0A CN110385562B (en) | 2018-11-07 | 2018-11-07 | Preheating section and final cooling section spray box processing method |
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| CN110385562A CN110385562A (en) | 2019-10-29 |
| CN110385562B true CN110385562B (en) | 2021-07-16 |
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| JP2004217979A (en) * | 2003-01-14 | 2004-08-05 | Nippon Steel Corp | Forcible convection type cooling method for steel strip in continuous type heat treatment facility and its apparatus |
| CN2866518Y (en) * | 2006-01-18 | 2007-02-07 | 宝山钢铁股份有限公司 | Fast cooling spraying box capable of suppressing strap steel vibration for continuous annealing |
| CN201250280Y (en) * | 2008-08-14 | 2009-06-03 | 宝山钢铁股份有限公司 | Hot galvanizing aerosol cooling spray box |
| CN101643833A (en) * | 2009-08-20 | 2010-02-10 | 中冶南方(武汉)威仕工业炉有限公司 | Method for manufacturing rapid cooling spray box of annealing furnace of cold rolling vertical type continuous annealing machine set |
| CN201873735U (en) * | 2010-11-24 | 2011-06-22 | 佛山市高明基业冷轧钢板有限公司 | Unit with functions of continuous hot galvanizing and continuous annealing |
| CN104651599A (en) * | 2015-03-17 | 2015-05-27 | 中冶南方(武汉)威仕工业炉有限公司 | Spray box device for inhibiting vibration of strip steel in gas cooling process |
| CN105074020A (en) * | 2013-02-25 | 2015-11-18 | 杰富意钢铁株式会社 | Continuous annealing device and continuous hot-dip galvanising device for steel strip |
-
2018
- 2018-11-07 CN CN201811318265.0A patent/CN110385562B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004217979A (en) * | 2003-01-14 | 2004-08-05 | Nippon Steel Corp | Forcible convection type cooling method for steel strip in continuous type heat treatment facility and its apparatus |
| CN2866518Y (en) * | 2006-01-18 | 2007-02-07 | 宝山钢铁股份有限公司 | Fast cooling spraying box capable of suppressing strap steel vibration for continuous annealing |
| CN201250280Y (en) * | 2008-08-14 | 2009-06-03 | 宝山钢铁股份有限公司 | Hot galvanizing aerosol cooling spray box |
| CN101643833A (en) * | 2009-08-20 | 2010-02-10 | 中冶南方(武汉)威仕工业炉有限公司 | Method for manufacturing rapid cooling spray box of annealing furnace of cold rolling vertical type continuous annealing machine set |
| CN201873735U (en) * | 2010-11-24 | 2011-06-22 | 佛山市高明基业冷轧钢板有限公司 | Unit with functions of continuous hot galvanizing and continuous annealing |
| CN105074020A (en) * | 2013-02-25 | 2015-11-18 | 杰富意钢铁株式会社 | Continuous annealing device and continuous hot-dip galvanising device for steel strip |
| CN104651599A (en) * | 2015-03-17 | 2015-05-27 | 中冶南方(武汉)威仕工业炉有限公司 | Spray box device for inhibiting vibration of strip steel in gas cooling process |
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| CN110385562A (en) | 2019-10-29 |
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