CN110551961B - Air knife closed gas hood for hot dip galvanizing aluminum magnesium production line - Google Patents
Air knife closed gas hood for hot dip galvanizing aluminum magnesium production line Download PDFInfo
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- CN110551961B CN110551961B CN201910898203.XA CN201910898203A CN110551961B CN 110551961 B CN110551961 B CN 110551961B CN 201910898203 A CN201910898203 A CN 201910898203A CN 110551961 B CN110551961 B CN 110551961B
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- hood door
- air hood
- air
- door
- fixed frame
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/06—Zinc or cadmium or alloys based thereon
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/14—Removing excess of molten coatings; Controlling or regulating the coating thickness
- C23C2/16—Removing excess of molten coatings; Controlling or regulating the coating thickness using fluids under pressure, e.g. air knives
- C23C2/18—Removing excess of molten coatings from elongated material
- C23C2/20—Strips; Plates
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Coating With Molten Metal (AREA)
Abstract
The invention discloses an air knife closed gas hood for a hot dip galvanizing aluminum magnesium production line, which comprises a fixed frame, wherein the side surface of the fixed frame is provided with a left gas hood door, a right gas hood door, a front gas hood door and a rear gas hood door, a first moving guide device with a first motor is arranged at the top of the fixed frame, the center of the top of the fixed frame is provided with a fixed gas hood plate, a third moving guide device with a third motor, a fourth moving guide device with a fourth motor, a fifth moving guide device with a fifth motor and a sixth moving guide device with a sixth motor are respectively arranged on the upper surface of the fixed gas hood plate, the two sides of the fixed gas hood plate are respectively provided with a left swinging gas hood door and a right swinging gas hood door, the fixed gas hood plate is provided with a strip steel inlet and outlet, an air injection pipe is arranged inside the fixed frame, and the outer surface of the air injection pipe is provided with a nozzle. The invention can realize the environmental sealing of the air knife area and avoid the quality problem of the zinc-aluminum-magnesium plated product caused by oxidation in the dip plating process.
Description
Technical Field
The invention relates to the field of metal processing equipment, in particular to an air knife closed gas hood for a hot-dip galvanizing aluminum magnesium production line.
Background
In recent years, the corrosion resistance of steel plates in the industries of automobiles, household appliances, construction facilities and the like is more and more strict, and in order to meet the increasingly improved corrosion resistance, certain alloy elements are added into zinc liquid to improve the plating performance of the steel plates and reduce the production cost of the steel plates, currently, main steel enterprises in the world have successively developed various new plating systems, such as a Galfan plating layer, a Galvalmue plating layer, a hot-dip zinc-aluminum-magnesium plating layer and the like, wherein the hot-dip zinc-aluminum-magnesium plating layer product is widely emphasized on the basis of the excellent corrosion resistance, and developed countries such as europe, the united states, japan and the like have developed zinc-aluminum-magnesium plating products with various component systems. The zinc-aluminum-magnesium coating product generally adopts a zinc liquid component system with higher aluminum and magnesium contents, when the magnesium content in the zinc liquid is higher, the surface coating of the strip steel is easy to oxidize in the dip plating process, so that the coating loses metallic luster and generates quality defects, the appearance quality of the zinc-aluminum-magnesium coating is influenced, the quality problem of the zinc-aluminum-magnesium product caused by the oxidation of the coating in the dip plating process is reduced, and the improvement of the appearance quality of the product is one of the key problems in the production of the zinc-aluminum-magnesium product.
Disclosure of Invention
The invention aims to provide an air knife sealing air hood for a hot dip galvanizing aluminum magnesium production line, which realizes the environmental sealing of an air knife area, avoids the quality problem of a galvanized aluminum magnesium plated product caused by oxidation in the dip galvanizing process and improves the appearance quality of the galvanized aluminum magnesium plated product.
In order to achieve the purpose, the invention adopts the following technical scheme:
an air knife closed gas hood for a hot dip galvanizing aluminum magnesium production line comprises a fixed frame, wherein the side surface of the fixed frame is provided with a left gas hood door, a right gas hood door, a front gas hood door and a rear gas hood door, a first movable guiding device with a first motor is arranged at the top of the fixed frame, the left gas hood door can be lifted up and down through the first movable guiding device, a second movable guiding device with a second motor is arranged at the top of the fixed frame, the right gas hood door can be lifted up and down through the second movable guiding device, the center of the top of the fixed frame is provided with a fixed gas hood plate, a third movable guiding device with a third motor, a fourth movable guiding device with a fourth motor, a fifth movable guiding device with a fifth motor and a sixth movable guiding device with a sixth motor are respectively arranged on the upper surface of the fixed gas hood plate, and the front gas hood door can be lifted up and down through the third movable guiding device, back gas hood door accessible fourth removes guider and carries out the oscilaltion, the both sides of fixed gas hood board are equipped with left pendulum gas hood door and right pendulum gas hood door respectively, the fifth removal guider of left pendulum gas hood door accessible carries out the luffing motion, the sixth removal guider of right pendulum gas hood door accessible carries out the luffing motion, be equipped with belted steel access & exit on the fixed gas hood board, fixed frame's inside is equipped with jet-propelled pipe, the one end setting of jet-propelled pipe is on left gas hood door, the other end setting of jet-propelled pipe is on right gas hood door, the surface of jet-propelled pipe is equipped with the nozzle.
Furthermore, the outer side surface of the left air hood door is provided with a flow regulating valve which can be communicated with one end of the air injection pipe.
Furthermore, the left air hood door, the right air hood door, the front air hood door, the rear air hood door, the fixed air hood plate, the left swing air hood door and the right swing air hood door are all made of high-temperature-resistant special fiber cloth.
Furthermore, bonding strips are respectively arranged between the fixed frame and the left air hood door, between the fixed frame and the right air hood door, between the fixed frame and the front air hood door, and between the fixed frame and the rear air hood door.
Furthermore, the inner side surface of the right air hood door is provided with an oxygen content detector.
Furthermore, a nitrogen content detector is arranged on the inner side surface of the right air hood door.
The invention has the following beneficial effects: the gas hood has the advantages of simple and convenient whole structure and low cost, realizes the environmental sealing of the air knife area, can control the nitrogen content in the air knife area through the flow regulating valve, ensures the atmosphere of the sealed environment, avoids the quality problem of the zinc-aluminum-magnesium plated product caused by oxidation in the dip plating process, and improves the appearance quality of the zinc-aluminum-magnesium plated product.
Drawings
FIG. 1 is a schematic view of the overall structure of an air knife closed gas hood for a hot dip galvanizing aluminum magnesium production line according to the present invention.
FIG. 2 is a schematic view of the internal structure of an air knife closed gas hood for a hot dip galvanizing aluminum magnesium production line according to the present invention.
FIG. 3 is a schematic view of an air knife closed gas hood of the invention used for a hot dip galvanizing aluminum magnesium production line assembled on a zinc pot.
Detailed Description
The technical solution in the embodiments of the present invention will be described below with reference to the accompanying drawings.
As shown in fig. 1, 2 and 3, an air knife closed gas hood for a hot dip galvanizing aluminum magnesium production line comprises a fixed frame 1, a left gas hood door 2, a right gas hood door 3, a front gas hood door 4 and a rear gas hood door 5 are arranged on the side surface of the fixed frame 1, a first moving guide device 7 with a first motor 6 is arranged on the top of the fixed frame 1, the left gas hood door 2 can be lifted up and down through the first moving guide device 7, a second moving guide device 9 with a second motor 8 is arranged on the top of the fixed frame 1, the right gas hood door 3 can be lifted up and down through the second moving guide device 9, a fixed gas hood plate 10 is arranged in the center of the top of the fixed frame 1, a third moving guide device 12 with a third motor 11, a fourth moving guide device 14 with a fourth motor 13, a fifth moving guide device 16 with a fifth motor 15, and a sixth moving guide device 18 with a sixth motor 17 are respectively arranged on the upper surface of the fixed gas hood plate 10, the front air hood door 4 can be ascended and descended through the third moving guide device 12, the rear air hood door 5 can be ascended and descended through the fourth moving guide device 14, the two sides of the fixed air hood plate 10 are respectively provided with a left-swinging air hood door 19 and a right-swinging air hood door 20, the left-swinging air hood door 19 can be ascended and descended through the fifth moving guide device 16, the right-swinging air hood door 20 can be ascended and descended through the sixth moving guide device 18, the fixed air hood plate 10 is provided with a strip steel entrance/exit 21, the inside of the fixed frame 1 is provided with the air ejector 22, one end of the air ejector 22 is arranged on the left air hood door 2, the other end of the air ejector 22 is arranged on the right air hood door 3, and the outer surface of the air ejector 22 is provided with a nozzle 23.
The fixed frame 1 is fixed on a platform on the side wall of the zinc pot 28, the strip steel inlet and outlet 21 is communicated with a plating product feeding channel needing hot-dip galvanizing aluminum magnesium, the combined design of the left air hood door 2, the right air hood door 3, the front air hood door 4, the rear air hood door 5, the fixed air hood plate 10, the left swinging air hood door 19 and the right swinging air hood door 20 on the fixed frame 1 can enable the upper part of the zinc pot 28 to form a closed area, nitrogen is then fed into the enclosed area through the gas lance 22, which is ejected from the nozzle 23, a vertically blowing air curtain is formed around the closed area, a good nitrogen atmosphere is always kept in the closed area to form a closed air knife area, when a worker puts plated products into the zinc pot 28, the quality problem of the plated products needing hot-dip galvanizing aluminum magnesium due to oxidation in the dip galvanizing process can be avoided, and the appearance quality of the galvanized aluminum magnesium plated products is improved; the third movable guiding device 12 controls the front air hood door 4 to lift up and down through the rotation of the third motor 11 so as to enable the front air hood door 4 to be in an open or closed state, the fourth movable guiding device 14 controls the rear air hood door 5 to lift up and down through the rotation of the fourth motor 13 so as to enable the rear air hood door 5 to be in an open or closed state, the fixed air hood plate 10 belongs to the fixed positions of the third movable guiding device 12 with the third motor 11 and the fourth movable guiding device 14 with the fourth motor 13, and when workers need to carry out slag salvaging operation in the zinc pot 28, the front air hood door 4 or the rear air hood door 5 can be lifted up without carrying out the closed air hood; when maintenance work needs to be performed on the gas ejector 22, the fifth moving guide device 16 turns the left swing gas hood door 19 upward by rotation of the fifth motor 15, the sixth moving guide device 18 turns the right swing gas hood door 20 upward by rotation of the sixth motor 17, the first moving guide device 7 raises the left gas hood door 2 by rotation of the first motor 6, the second moving guide device 9 raises the right gas hood door 3 by rotation of the second motor 8, the left gas hood door 2 and the right gas hood door 3 are raised simultaneously, the gas ejector 22 is moved upward until the gas ejector 22 approaches the top of the fixed frame 1, and a worker can maintain the gas ejector 22 from the turned-open position of the left swing gas hood door 19 or the turned-open position of the right swing gas hood door 20 without moving the closed gas hood.
The outer side surface of the left air hood door 2 is provided with a flow regulating valve 24 which can be communicated with one end of the air ejector pipe 22. According to the air knife blowing pressure which can be borne by the plated product, the flow regulating valve 24 can be regulated to regulate the nitrogen flow input into the closed gas hood, so that the closed gas hood is ensured to have a stable nitrogen atmosphere.
The left air hood door 2, the right air hood door 3, the front air hood door 4, the rear air hood door 5, the fixed air hood plate 10, the left swinging air hood door 19 and the right swinging air hood door 20 are all made of high-temperature-resistant special fiber cloth.
The inner side surface of the right air hood door 3 is provided with an oxygen content detector 26. And a nitrogen content detector 27 is arranged on the inner side surface of the right gas hood door 3. The oxygen content detector 26 can monitor the oxygen content in the closed gas hood in real time, the nitrogen content detector 27 can monitor the nitrogen content in the closed gas hood in real time, on one hand, the closed effect of the closed gas hood and the potential influence on the product quality can be evaluated, and on the other hand, the safety early warning effect can be played for the operation of an air knife area.
Claims (6)
1. An air knife closed gas hood for a hot dip galvanizing aluminum magnesium production line comprises a fixed frame (1), and is characterized in that a left air hood door (2), a right air hood door (3), a front air hood door (4) and a rear air hood door (5) are arranged on the side face of the fixed frame (1), a first moving guide device (7) with a first motor (6) is arranged at the top of the fixed frame (1), the left air hood door (2) can be lifted up and down through the first moving guide device (7), a second moving guide device (9) with a second motor (8) is arranged at the top of the fixed frame (1), the right air hood door (3) can be lifted up and down through the second moving guide device (9), a fixed air hood plate (10) is arranged in the center of the top of the fixed frame (1), a third moving guide device (12) with a third motor (11), a fourth moving guide device (14) with a fourth motor (13), A fifth movable guiding device (16) with a fifth motor (15), a sixth movable guiding device (18) with a sixth motor (17) are respectively arranged on the upper surface of the fixed air hood plate (10), the front air hood door (4) can be lifted up and down through the third movable guiding device (12), the rear air hood door (5) can be lifted up and down through the fourth movable guiding device (14), the two sides of the fixed air hood plate (10) are respectively provided with a left swinging air hood door (19) and a right swinging air hood door (20), the left swinging air hood door (19) can be swung up and down through the fifth movable guiding device (16), the right swinging air hood door (20) can be swung up and down through the sixth movable guiding device (18), a strip steel access (21) is arranged on the fixed air hood plate (10), an air injection pipe (22) is arranged inside the fixed frame (1), one end of the air injection pipe (22) is arranged on the left air hood door (2), the other end of the gas injection pipe (22) is arranged on the right air hood door (3), and the outer surface of the gas injection pipe (22) is provided with a nozzle (23).
2. The air knife closed gas hood for the hot galvanizing aluminum magnesium production line according to the claim 1, characterized in that the outer side surface of the left gas hood door (2) is provided with a flow regulating valve (24) which can be communicated with one end of the gas injection pipe (22).
3. The air knife sealing air hood for the hot galvanizing aluminum magnesium production line according to claim 1 or 2, characterized in that the left air hood door (2), the right air hood door (3), the front air hood door (4), the rear air hood door (5), the fixed air hood panel (10), the left swing air hood door (19) and the right swing air hood door (20) are all made of high temperature resistant special fiber cloth.
4. The air knife sealing air hood for the hot galvanizing aluminum magnesium production line according to claim 1 or 2, characterized in that bonding strips (25) are respectively arranged between the fixed frame (1) and the left air hood door (2), between the fixed frame (1) and the right air hood door (3), between the fixed frame (1) and the front air hood door (4), and between the fixed frame (1) and the rear air hood door (5).
5. The air knife closed gas hood for the hot dip galvanizing aluminum magnesium production line according to the claim 1, characterized in that the inner side surface of the right gas hood door (3) is provided with an oxygen content detector (26).
6. The air knife closed gas hood for the hot dip galvanizing aluminum magnesium production line according to the claim 1, characterized in that a nitrogen content detector (27) is arranged on the inner side surface of the right gas hood door (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910898203.XA CN110551961B (en) | 2019-09-23 | 2019-09-23 | Air knife closed gas hood for hot dip galvanizing aluminum magnesium production line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910898203.XA CN110551961B (en) | 2019-09-23 | 2019-09-23 | Air knife closed gas hood for hot dip galvanizing aluminum magnesium production line |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110551961A CN110551961A (en) | 2019-12-10 |
| CN110551961B true CN110551961B (en) | 2021-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910898203.XA Active CN110551961B (en) | 2019-09-23 | 2019-09-23 | Air knife closed gas hood for hot dip galvanizing aluminum magnesium production line |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113529000A (en) * | 2021-07-14 | 2021-10-22 | 马鞍山钢铁股份有限公司 | Magnesium oxidation protection method for hot galvanizing aluminum-magnesium alloy coating product |
| CN114293122B (en) * | 2022-01-13 | 2023-09-26 | 马鞍山钢铁股份有限公司 | Air knife sealing device suitable for zinc-aluminum-magnesium production line and use method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02182870A (en) * | 1989-01-09 | 1990-07-17 | Sumitomo Metal Ind Ltd | Manufacture of hot dip galvanized steel sheet |
| JP2007138208A (en) * | 2005-11-16 | 2007-06-07 | Mitsubishi-Hitachi Metals Machinery Inc | Liquid-wiping device |
| CN204874706U (en) * | 2015-06-29 | 2015-12-16 | 上海梅山钢铁股份有限公司 | Air knife retaining device |
| CN208346242U (en) * | 2018-07-05 | 2019-01-08 | 黄石山力科技股份有限公司 | A kind of zinc pot gear door gear and galvanizing equipment |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5543726B2 (en) * | 2009-05-08 | 2014-07-09 | 三菱日立製鉄機械株式会社 | Gas wiping device |
-
2019
- 2019-09-23 CN CN201910898203.XA patent/CN110551961B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02182870A (en) * | 1989-01-09 | 1990-07-17 | Sumitomo Metal Ind Ltd | Manufacture of hot dip galvanized steel sheet |
| JP2007138208A (en) * | 2005-11-16 | 2007-06-07 | Mitsubishi-Hitachi Metals Machinery Inc | Liquid-wiping device |
| CN204874706U (en) * | 2015-06-29 | 2015-12-16 | 上海梅山钢铁股份有限公司 | Air knife retaining device |
| CN208346242U (en) * | 2018-07-05 | 2019-01-08 | 黄石山力科技股份有限公司 | A kind of zinc pot gear door gear and galvanizing equipment |
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| Publication number | Publication date |
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| CN110551961A (en) | 2019-12-10 |
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