CN111778468A - Baffle plate, device and method for hot galvanizing noise reduction and edge thickness control - Google Patents
Baffle plate, device and method for hot galvanizing noise reduction and edge thickness control Download PDFInfo
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- CN111778468A CN111778468A CN202010639077.9A CN202010639077A CN111778468A CN 111778468 A CN111778468 A CN 111778468A CN 202010639077 A CN202010639077 A CN 202010639077A CN 111778468 A CN111778468 A CN 111778468A
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- noise reduction
- edge thickness
- hot galvanizing
- baffle
- noise
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- 230000009467 reduction Effects 0.000 title claims abstract description 81
- 238000005246 galvanizing Methods 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000009434 installation Methods 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 28
- 239000010959 steel Substances 0.000 claims description 28
- 230000007704 transition Effects 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 9
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 2
- 229910001335 Galvanized steel Inorganic materials 0.000 claims description 2
- 239000004964 aerogel Substances 0.000 claims description 2
- 239000010962 carbon steel Substances 0.000 claims description 2
- 239000008397 galvanized steel Substances 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 230000002146 bilateral effect Effects 0.000 claims 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 7
- 239000011701 zinc Substances 0.000 description 7
- 229910052725 zinc Inorganic materials 0.000 description 7
- 239000007789 gas Substances 0.000 description 6
- 239000007788 liquid Substances 0.000 description 4
- 238000004026 adhesive bonding Methods 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 208000028571 Occupational disease Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
-
- 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
-
- 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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- 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
A baffle plate, a device and a method for hot galvanizing noise reduction and edge thickness control relate to the field of noise reduction baffle plates. The baffle of making an uproar and falling with thick control of limit includes the baffle in the hot-galvanize, the installation piece of setting on baffle upper portion, fall the board of making an uproar, the hot-galvanize falls to make an uproar and is divided into the workspace with the thick control of limit, excessive district, fall the three district of making an uproar, the workspace is far away from excessive district one side lower extreme and is the arc, excessive district and fall the district of making an uproar and be equipped with the air current guiding gutter, it still is equipped with the board of making an uproar to fall the district of making an uproar still to fall the district of making an uproar, the hot-galvanize falls to fall the device of making an uproar and falling the thick control of limit including the hot-galvanize and fall the baffle of making.
Description
Technical Field
The invention relates to the field of noise reduction baffles, in particular to a hot galvanizing noise reduction and edge thickness control baffle, a device and a method.
Background
With the increasing environmental protection requirements of industrial production on the field environment and the gradual emphasis on noise control, the continuous hot galvanizing unit continuously increases the production line speed, the air knife widely uses air or nitrogen as the main medium of the air knife at present, in order to accurately control the coating weight required by a customer, the redundant liquid zinc is blown by air flow with certain pressure to obtain the target control coating weight, the air knife uses gas as the main medium, under the existing air knife condition, the minimum control gap and the optimal knife lip gap of the air knife are used, and the noise generated by blowing zinc liquid by the air knife can not be effectively reduced, so that the influence on the working environment is larger.
In the working process of the air knife, the generated noise is one of important subjects researched by manufacturing enterprises and scientific research institutes all the time, the air knife structure is optimized, active construction and investment of personnel in the aspects of working time and the like in a high-noise environment are reduced, the noise is reduced, the noise reduction still has certain limitation, and the noise generated on site is still required to be isolated or reduced by the personnel wearing noise-proof earplugs or noise-proof helmets, earmuffs and the like.
Disclosure of Invention
The invention aims to provide a baffle plate, a device and a method for reducing noise of hot galvanizing and controlling edge thickness, which can reduce noise pollution and control excessive zinc at the edge of strip steel.
The technical scheme adopted by the invention is as follows:
a baffle plate for reducing noise and controlling edge thickness of hot galvanizing comprises a baffle plate, and an installation block and a noise reduction plate which are arranged on the upper part of the baffle plate, wherein the baffle plate for reducing noise and controlling edge thickness of hot galvanizing comprises a working area, a transition area and a noise reduction area;
the airflow diversion grooves are arc-shaped inward grooves and extend from the left side of the transition region to the bottom of the noise reduction region, the depths of the airflow diversion grooves are smaller along with the distance from the top of the baffle plate, the heights of the airflow diversion grooves are unchanged, the front side and the rear side of each airflow diversion groove are symmetrically arranged, and at least one airflow diversion groove is arranged on one side of each airflow diversion groove;
the noise reduction plate covers the airflow diversion groove arranged in the noise reduction area, and the noise reduction plate is symmetrically arranged in the front and back.
A hot galvanizing noise reduction and edge thickness control device comprises two hot galvanizing noise reduction and edge thickness control baffles, strip steel and two air knife plates, wherein the two air knife plates are arranged in parallel relatively, the two hot galvanizing noise reduction and edge thickness control baffles are fixedly arranged at two sides between the two air knife plates through mounting blocks, and the strip steel is arranged between the two air knife plates and the two hot galvanizing noise reduction and edge thickness control baffles;
air knives are uniformly arranged on a straight line on the air knife plate, and air flow is sprayed by the air knives to form an air flow position surface.
A method for reducing noise and controlling edge thickness of hot galvanizing comprises the following steps:
two air knife plates are installed in parallel;
a baffle plate for reducing noise of hot galvanizing and controlling edge thickness is fixedly arranged in parallel to the airflow position surface, so that the airflow position surface is lower than the noise reduction plate and higher than the highest position of the airflow diversion trench;
ventilating the air knives to operate, and enabling the strip steel to move in a single direction between the two air knife plates and the two hot galvanizing noise reduction and edge thickness control baffles;
the strip steel and the hot galvanizing noise reduction and edge thickness control baffle are horizontally and transversely arranged and are vertically arranged with the air knife plate, and the distance between the strip steel and the hot galvanizing noise reduction and edge thickness control baffle is 2-30 mm.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. the invention plays a role in reducing noise harm, thereby protecting the auditory organs of operators and preventing and reducing the harm of occupational diseases.
2. The invention has the function of preventing the strip steel edge from being over-galvanized, the improvement of the strip steel edge thickness control quality obviously improves the outlet coiling and the use plate type of a client, and the invention has the advantages of wider product processing line, improved product quality, saved zinc use amount, reduced energy consumption and economic benefit.
Drawings
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a front view structural diagram of a hot dip galvanized noise reduction and edge thickness control baffle of the present invention;
FIG. 2 is a side view block diagram of a hot dip galvanized noise reduction and edge thickness control baffle of the present invention;
FIG. 3 is a top view of the baffle for reducing noise and controlling edge thickness of hot dip galvanized steel according to the present invention;
FIG. 4 is a cross-sectional view of the baffle transition zone and noise reduction zone interface of the hot dip galvanizing noise reduction and edge thickness control of the present invention;
FIG. 5 is a front view of the apparatus for reducing noise and controlling edge thickness of hot dip galvanizing in accordance with the present invention;
FIG. 6 is a top view of the apparatus for reducing noise and controlling edge thickness of hot dip galvanizing in accordance with the present invention;
reference numerals in the drawings indicate: 1-baffle, 2-installation block, 3-working area, 4-transition area, 5-noise reduction area, 6-airflow diversion trench, 7-noise reduction plate, 8-airflow position line, 9-strip steel, 10-air knife plate and 11-air knife.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
The invention is further described with reference to the following figures and examples.
Referring to fig. 1-4, a baffle for reducing noise and controlling edge thickness of hot galvanizing comprises a baffle 1, a mounting block 2 and a noise reduction plate 7, wherein the mounting block 2 and the noise reduction plate 7 are arranged on the upper portion of the baffle, the baffle for reducing noise and controlling edge thickness of hot galvanizing comprises a working area 3, a transition area 4 and a noise reduction area 5, the lower end of one side, away from the transition area 4, of the working area 3 is arc-shaped, the transition area 4 and the noise reduction area 5 are provided with airflow guide grooves 6, and the noise reduction area 5 is also provided with the noise;
it should be noted that:
1. the baffle is often in a high-temperature area during working, the materials are selected by firstly considering the high-quality characteristics of slag adhesion prevention and high-temperature resistance and no deformation, the material of the baffle is preferably high-temperature resistant stainless steel, secondly high-strength steel is selected as the main material of the baffle, and the material of a common carbon steel such as Q235B and the like can also be used as the material of the baffle;
2. the mounting block can be provided with one of a mounting hole and a mounting sheet, preferably the mounting hole, the mounting hole or the mounting sheet on the mounting block is connected with a lead screw on a driving mechanism of the air knife plate or a track driven by a linear motor in one of bolt fixing, buckle fixing, welding and gluing, preferably the mounting block is fixed by a bolt and is convenient to detach, and the mounting block is fixed between the baffle and the baffle in one of bolt fixing, buckle fixing, welding and gluing, preferably the mounting block is welded;
3. the design of the working area, the transition area and the noise reduction area is to avoid influencing the effect of the baffle on the airflow steady flow at the edge of the strip steel, the working area is closest to the strip steel, the generated noise is the maximum, in order to reduce the noise of the working area with the maximum capability as much as possible and ensure that the working area does not directly influence the airflow, therefore, the transition area is designed on the baffle, the main air knife flow guiding effect of the transition area is realized, the gas after the flow guiding of the transition area needs to pass through the noise reduction area again to be gradually reduced, the noise reduction area has the main noise reduction effect, the length of the noise reduction area is greater than that of the transition area and the working area, and the shorter working area and the transition area are beneficial to reducing the noise intensity; preferably, the working area generally occupies 20-28% of the total length of the baffle, the transition area generally occupies 10-16% of the total length of the baffle, and the noise reduction area generally occupies 56-70% of the total length of the baffle;
4. the lower end of one side of the working area, which is far away from the transition area, is in an arc diversion design and is used for guiding airflow to the airflow diversion groove, and the transverse length of the arc is 50-100 mm.
The airflow diversion trench 6 is a groove with an inward arc shape and extends from the left side of the transition region 4 to the bottom of the noise reduction region 5, the depth of the airflow diversion trench 6 is smaller along with the distance from the top of the baffle 1, the height is unchanged, the airflow diversion trench 6 is symmetrically arranged on the front side and the rear side, and at least one airflow diversion trench 6 is arranged on one side;
it should be noted that: the air flow guide groove is used for guiding the air flow caused by the air knife acting on the edge of the strip steel and the action surface of the baffle to the position of the noise reduction plate so as to reduce noise; the airflow diversion groove is formed by cutting the base material of the baffle; the cross section of the inward groove of the airflow guiding groove can be as follows: the shape of the circular arc is the same as that of the circular arc, the circular arc or the circular or elliptical part, and the circular arc is preferably a circular arc; the direction of the airflow diversion trench extends from the left side of the transition region to the bottom of the noise reduction region, and the extension mode between the airflow diversion trench and the noise reduction region can be arc-shaped, linear-shaped and the combination of the arc-shaped and the linear-shaped parts.
The noise reduction plate 7 covers the airflow diversion groove 6 arranged in the noise reduction area 5, and the noise reduction plate 7 is symmetrically arranged in front and back;
it should be noted that: the side of the noise reduction plate close to the air flow diversion groove is used for reducing noise introduced into the transition area, and the side far away from the air flow diversion groove is used for directly reducing noise outside the air flow sprayed out of the air knife; the air flow guide groove reduces the air flow of the air knife in a noise reduction area, so that redundant air is sprayed out through other air knives, the utilization rate of the air is improved, and the noise of the air knives is reduced; the noise reduction plate is fixed outside the airflow diversion trench of the noise reduction area, can be replaced, and can be fixed in one or more modes of bolts, gluing and buckles, preferably, fixed by bolts; the noise reduction plate is made of a high-temperature-resistant porous flexible material, the air knife is arranged above the zinc pot and is close to the liquid level of zinc liquid in the zinc pot, the high-temperature resistance of the noise reduction plate is guaranteed, and the knife lip of the air knife is not damaged, so that the gap between the noise reduction plate and the knife lip of the air knife is reduced to be as small as possible, the large noise generated by the escape of gas in the air knife is inhibited, and preferably aerogel felt is used as the noise reduction plate material.
Referring to fig. 5-6, a hot galvanizing noise reduction and edge thickness control device comprises two hot galvanizing noise reduction and edge thickness control baffles, a strip steel 9 and two air knife plate blocks 10, wherein the two air knife plate blocks 10 are arranged in parallel relatively, the two hot galvanizing noise reduction and edge thickness control baffles are fixedly arranged at two side positions between the two air knife plate blocks 10 by a mounting block 2, and the strip steel 9 is arranged between the two air knife plate blocks 10 and the two hot galvanizing noise reduction and edge thickness control baffles;
referring to fig. 1-6, a method for reducing noise and controlling edge thickness of hot dip galvanizing comprises the following steps:
two air knife plates 10 are installed in parallel;
a baffle plate for reducing noise of hot galvanizing and controlling edge thickness is fixedly arranged in parallel to the airflow position surface 8, so that the airflow position surface 8 is lower than the noise reduction plate 7 and higher than the highest position of the airflow diversion trench 6;
ventilating an air knife 11 to operate, and enabling the strip steel 9 to move in a single direction between two air knife plate blocks 10 and two hot galvanizing noise reduction and edge thickness control baffles;
the strip steel 9 and the hot galvanizing noise reduction and edge thickness control baffle are horizontally and transversely arranged and are vertically arranged with the air knife plate 10, and the distance between the strip steel 9 and the hot galvanizing noise reduction and edge thickness control baffle is 2-30 mm;
it should be noted that: the baffle for reducing noise of hot galvanizing and controlling edge thickness is positioned beyond the maximum width of the strip steel, and the hot galvanizing coating and the strip steel are not influenced; when the flow velocity of air flow of the air knife is lower than the sound velocity, noise is generated due to strong turbulent flow generated by gas, when the air flow of the air knife is sprayed to the surface of the strip steel and the edge of the strip steel, the air flow is blocked, the pressure of the gas flows towards the direction with small pressure, when a plurality of strands of gas in different directions collide to generate turbulent flow, the noise is higher than the noise generated by normal flow velocity, the generated turbulent flow velocity is stronger and the noise is higher, and through the use of the invention, the turbulent flow velocity is reduced, and the noise is reduced.
The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be made by those skilled in the art without inventive work within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.
Claims (10)
1. The utility model provides a hot-galvanize fall make an uproar with thick baffle of controlling in limit, includes baffle (1), sets up at installation piece (2) on baffle upper portion and falls board (7) of making an uproar, its characterized in that: the baffle plate for reducing the noise of hot galvanizing and controlling the edge thickness comprises a working area (3), a transition area (4) and a noise reduction area (5), wherein the lower end of one side of the working area (3) far away from the transition area (4) is arc-shaped, the transition area (4) and the noise reduction area (5) are provided with airflow guide grooves (6), and the noise reduction area (5) is also provided with a noise reduction plate (7).
2. The baffle plate for reducing noise and controlling edge thickness of hot galvanizing according to claim 1, wherein: the working area accounts for 20-28% of the total length of the hot galvanizing noise reduction and edge thickness control baffle, the transition area accounts for 10-16% of the total length of the hot galvanizing noise reduction and edge thickness control baffle, and the noise reduction area accounts for 56-70% of the total length of the hot galvanizing noise reduction and edge thickness control baffle.
3. The baffle plate for reducing noise and controlling edge thickness of hot galvanizing according to claim 1, wherein: airflow guiding gutter (6) are the inward recess of arc, extend to falling the district of making an uproar (5) bottom from transition district (4) left side, and the degree of depth of airflow guiding gutter (6) is along with the degree of depth more far away from baffle (1) top is littleer, highly unchangeable, bilateral symmetry sets up around airflow guiding gutter (6), and one side sets up one airflow guiding gutter (6) at least.
4. The baffle plate for reducing noise and controlling edge thickness of hot galvanizing according to claim 1, wherein: the noise reduction plate (7) covers an airflow guide groove (6) arranged in the noise reduction area (5), and the noise reduction plate (7) is symmetrically arranged in the front and back.
5. The baffle plate for reducing noise and controlling edge thickness of hot galvanizing according to claim 1, wherein: the main material of the noise reduction plate (7) is aerogel felt.
6. The baffle plate for reducing noise and controlling edge thickness of hot galvanizing according to claim 1, wherein: the baffle (1) is mainly made of one or more of high-temperature-resistant stainless steel, high-strength steel and common carbon steel.
7. A hot galvanizing noise reduction and edge thickness control device, which adopts the hot galvanizing noise reduction and edge thickness control baffle plate of any one of claims 1 to 6, and is characterized in that: the hot galvanizing plate edge thickness control device comprises two hot galvanizing noise reduction and edge thickness control baffles, a strip steel (9) and two air knife plate blocks (10), wherein the two air knife plate blocks (10) are arranged in parallel relatively, the two hot galvanizing noise reduction and edge thickness control baffles are fixedly arranged at two side positions between the two air knife plate blocks (10) through mounting blocks (2), and the strip steel (9) is arranged between the two air knife plate blocks (10) and the two hot galvanizing noise reduction and edge thickness control baffles.
8. The apparatus for reducing noise and controlling edge thickness of hot-dip galvanized steel sheet according to claim 7, characterized in that: air knives (11) are uniformly arranged on a straight line on the air knife plate (10), and air jets of the air knives (11) form an air flow position surface (8).
9. A method for reducing noise and controlling edge thickness of hot galvanizing by using the baffle and the device for reducing noise and controlling edge thickness of hot galvanizing according to any one of claims 1 to 8, which is characterized by comprising the following steps:
two air knife plates (10) are arranged in parallel;
a baffle plate for reducing noise of hot galvanizing and controlling edge thickness is fixedly arranged in parallel to the airflow position surface (8), so that the airflow position surface (8) is lower than the noise reduction plate (7) and higher than the highest part of the airflow diversion trench (6);
and (3) ventilating the air knives (11) to operate, so that the strip steel (9) moves in a single direction between the two air knife plate blocks (10) and the two hot galvanizing baffle plates for reducing noise and controlling edge thickness.
10. The method for reducing noise and controlling edge thickness of hot galvanizing according to claim 9, wherein: the strip steel (9) is horizontally and transversely arranged with the hot galvanizing noise reduction and edge thickness control baffle plate and is vertically arranged with the air knife plate block (10), and the distance between the strip steel (9) and the hot galvanizing noise reduction and edge thickness control baffle plate is 2-30 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010639077.9A CN111778468B (en) | 2020-07-06 | Baffle, device and method for hot galvanizing noise reduction and edge thickness control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010639077.9A CN111778468B (en) | 2020-07-06 | Baffle, device and method for hot galvanizing noise reduction and edge thickness control |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111778468A true CN111778468A (en) | 2020-10-16 |
| CN111778468B CN111778468B (en) | 2024-07-02 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070151797A1 (en) * | 2003-05-28 | 2007-07-05 | Roark Michael E | Aircraft ground run-up enclosure |
| CN203474879U (en) * | 2013-08-15 | 2014-03-12 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Negative-pressure air knife baffle plates |
| CN212404245U (en) * | 2020-07-06 | 2021-01-26 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Baffle and device for reducing noise and controlling edge thickness of hot galvanizing |
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070151797A1 (en) * | 2003-05-28 | 2007-07-05 | Roark Michael E | Aircraft ground run-up enclosure |
| CN203474879U (en) * | 2013-08-15 | 2014-03-12 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Negative-pressure air knife baffle plates |
| CN212404245U (en) * | 2020-07-06 | 2021-01-26 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Baffle and device for reducing noise and controlling edge thickness of hot galvanizing |
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Inventor after: Liu Xiaohua Inventor after: Wang Hai Inventor after: Tian Chenghui Inventor after: Shi Junfeng Inventor after: Ru Liangzhong Inventor before: Liu Xiaohua Inventor before: Wang Hai Inventor before: Tian Chenghui Inventor before: Shi Junfeng Inventor before: Ru Liangzhong |
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