CN201024208Y - Atomized cooling device for cold-rolled plate hot galvanizing production - Google Patents
Atomized cooling device for cold-rolled plate hot galvanizing production Download PDFInfo
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- CN201024208Y CN201024208Y CNU2007200691560U CN200720069156U CN201024208Y CN 201024208 Y CN201024208 Y CN 201024208Y CN U2007200691560 U CNU2007200691560 U CN U2007200691560U CN 200720069156 U CN200720069156 U CN 200720069156U CN 201024208 Y CN201024208 Y CN 201024208Y
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- supply pipe
- shower nozzle
- water
- cold
- cooling
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- 238000001816 cooling Methods 0.000 title claims abstract description 76
- 238000004519 manufacturing process Methods 0.000 title abstract description 19
- 238000005246 galvanizing Methods 0.000 title abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 64
- 239000010959 steel Substances 0.000 claims abstract description 64
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 37
- 239000010960 cold rolled steel Substances 0.000 claims abstract description 26
- 238000002347 injection Methods 0.000 claims abstract description 5
- 239000007924 injection Substances 0.000 claims abstract description 5
- 230000006872 improvement Effects 0.000 abstract description 2
- 239000000498 cooling water Substances 0.000 abstract 4
- 238000000889 atomisation Methods 0.000 abstract 1
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 230000007547 defect Effects 0.000 abstract 1
- 238000010298 pulverizing process Methods 0.000 abstract 1
- 238000005275 alloying Methods 0.000 description 11
- 239000011248 coating agent Substances 0.000 description 11
- 238000000576 coating method Methods 0.000 description 11
- 239000007921 spray Substances 0.000 description 8
- 239000000443 aerosol Substances 0.000 description 6
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 5
- 238000006253 efflorescence Methods 0.000 description 5
- 206010037844 rash Diseases 0.000 description 5
- 239000011701 zinc Substances 0.000 description 5
- 229910052725 zinc Inorganic materials 0.000 description 5
- 230000002950 deficient Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000779 smoke Substances 0.000 description 4
- 239000002826 coolant Substances 0.000 description 3
- 238000005097 cold rolling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 229910001335 Galvanized steel Inorganic materials 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000008397 galvanized steel Substances 0.000 description 1
- KFZAUHNPPZCSCR-UHFFFAOYSA-N iron zinc Chemical compound [Fe].[Zn] KFZAUHNPPZCSCR-UHFFFAOYSA-N 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Coating With Molten Metal (AREA)
- Nozzles (AREA)
Abstract
The utility model used for steel plate production pertains to a metallurgical industry, in particular to an atomization cooling device which is used in hot-dip galvanizing of cold rolled steel plate. The utility model comprises injection devices arranged on both sides of the steel plate (G) respectively, and is characterized in that: the injection device comprises a pressure cooling water supply pipe (1), a pressure cooling air supply pipe (2), a group of nozzles (3) which are arranged at the side part of the steel plate (G) and communicated with the pressure cooling water supply pipe (1) as well as the pressure cooling air supply pipe (2). A pressure distribution valve (4) is arranged on an entering end of the pressure cooling water supply pipe (1) and the pressure cooling water supply pipe (2), a plurality of injection devices are arranged at both sides of a plane paralleling to the steel plate (G). The utility model solves a problem of poor cooling quality which is caused by the asynchrony of water and gas, thus, having high cooling rate, improving the quality of products, decreasing the pulverization defects effectively, and also the production area occupied is small, which ensures the utility model is applicable to occasions which call for improvements with the prior art and have small production areas.
Description
Technical field
The utility model is a kind of steel plate production device, particularly a kind of atomizing refrigerating unit of cold-rolled steel sheet pot galvanize production usefulness.
Background technology
Known, in the production of the special use band steel of cold rolling hot dip galvanizing unit alloying furnace cooling section, particularly in pot galvanize unit alloying outside plate is produced, need use refrigerating unit that the band steel is cooled off in process of production.Usually, described refrigerating unit all adopts after traditional plating the air blown type of cooling or with the aerosol type of cooling band steel is cooled off, to improve the speed of cooling of band steel, the good zinc-iron alloy phase constitution structure of control coating.
The coating of alloyed hot-dip galvanized steel sheet is easy to occur powder phenomenon-tion in stamping process, described efflorescence is now as the operating rate that not only influences press workshop, and has a strong impact on the surface quality of the finished product.
Yet the alloying anneal of coating is closely related in the coating efflorescence of alloying steel plate and its production process.Owing to be subjected to the limitation of length of alloying furnace,, must adopt higher alloying temperature or lower unit speed to produce in order to guarantee complete alloying (be that coating surface does not exist pure zinc phase, and also do not have a large amount of ζ phases) with steel.In this case, the band steel is easy to occur alloying,, generates a large amount of Γ mutually between coating and substrate that is, like this, causes the coating resistance to chalking can be low.In order to address this problem, just need to be with steel to cool down apace, to prevent generating blocked up Γ phase in its coating, take this to improve the resistance to chalking energy of coating.
Yet as previously mentioned, the pot galvanize unit of some at present domestic Steel Plant all adopts the air blown type of cooling after traditional plating, and rate of cooling is lower, and the quality product for the alloying automobile exterior panel has very big influence especially, and zinc layer efflorescence defective is more.
In addition, for addressing the above problem, described refrigerating unit also has the following aerosol type of cooling of employing that the band steel is cooled off.
One makes water pass through the shower nozzle runner adding to depress, and the water smoke that the back forms atomizing is quickened in decompression at the shower nozzle place.This method is proper as using, and can address the above problem to a certain extent.But this method to the working conditions of hydraulic pressure and flow and regulate require very high, if regulate improper or hydraulic pressure and flow low slightly, just can't form even, trickle water smoke, the result, the water of failing to atomize drops down, drips from the shower nozzle mouth.At this moment, because of the alloying furnace that is positioned at this refrigerating unit below is provided with elements such as electric ruhmkorff coil, meets water and can cause short circuit, jump fault such as electricity, the high hot zinc pot that is positioned at the below equally splashes into water also can cause that aqueous vapor is splashed etc., causes the generation of accident.On the other hand, if water liquid is too small, then cooling is not enough, also can influence the quality of steel plate.
They are two years old, certain steel mill's pot galvanize unit has adopted the atomizing refrigerating unit, this device adopts low pressure that current are delivered to the lateral shower nozzle in a row of the steel plate that is arranged in production, described current are carried out meticulous control, its fine overflow (stream) is gone out, simultaneously, start gas blower via pipeline, the air that is pressurized to certain pressure is delivered to by the atomizer side, and pressure air blows afloat the current that overflow in the shower nozzle, atomize, and the water coolant that makes atomizing sprays to belt steel surface with the direction perpendicular to belt steel surface and cools off.
Yet,,, need complicated operating device and system for the flow of strict controlled chilling water liquid according to above-mentioned atomizing refrigerating unit; Forced air is generated and is carried by gas blower, causes the bulky of described refrigerating unit, and the production scene takes up room bigger; , in addition, described refrigerating unit investment is big; Also very high to the requirement of flow and pressure, each road water pipe all must be provided with the meter specially of steady pressure and flow.
Obviously as seen, above-mentioned band steel refrigerating unit adopts jet cooling, and speed of cooling is relatively low, improve speed of cooling and must strengthen air quantity, but this is easy to cause band steel high vibration, can have a strong impact on the homogeneity of alloyed hot-dip zinc product coating and the homogeneity of coating alloying degree.
Secondly, generally all be arranged on present situation in the small space at present existing unit, such scheme also is not suitable for the transformation of existing unit.
At above defective, the production of cold rolling hot dip galvanizing band steel needs a kind of like this refrigerating unit, described refrigerating unit can keep cooling off that the water droplet of atomized water of usefulness is trickle, atomizing state is stablized, can not produce water droplet, and it is simple in structure, volume compact, and control, operation etc. are easy to use.
Summary of the invention
In view of above-mentioned, the purpose of this utility model is: provide a kind of cold-rolled steel sheet pot galvanize to produce with the atomizing refrigerating unit.Produce with the atomizing refrigerating unit according to cold-rolled steel sheet pot galvanize of the present utility model, the atomized water that can obtain that water droplet is trickle, atomizing state is stable, can not produce the cooling usefulness of water droplet, and the atomizing refrigerating unit of described improvement is simple in structure, volume compact, and control, operation etc. are easy to use.
Cold-rolled steel sheet pot galvanize of the present utility model is produced with the atomizing refrigerating unit, comprise the jet apparatus that is separately positioned on both sides, steel plate plane, it is characterized in that, described jet apparatus comprise pressurization cooling with water-supply pipe, pressurization cooling with air-supply duct and be positioned at the steel plate planar side and with above-mentioned pressurization cooling with water-supply pipe with pressurize and cool off the one group of shower nozzle that is communicated with air-supply duct.
According to atomizing refrigerating unit of the present utility model, atomizing water coolant after the described pressurization is before water liquid leaves shower nozzle, form by pressurised stream and forced air are mixed in shower nozzle inside, therefore, water smoke from shower nozzle does not exist water, the asynchronous cooling quality problems that occur of gas, can not break down yet.
According to atomizing refrigerating unit of the present utility model, because of adopting the atomizing cooling principle, reach higher rate of cooling, alleviated the efflorescence defective of band steel effectively.
According to atomizing refrigerating unit of the present utility model, the pressurization size and the flow of current, air-flow are controlled, and its control requires and precision is not high, than the control requirement reduction significantly of prior art.Even hydraulic pressure just in case fluctuation, also only is to cause in the aerosol of ejection moisture content low, loss heat exchange effect, but can not cause other serious accidents, safe and reliable.
According to atomizing refrigerating unit of the present utility model, described water pipe and tracheae insert the production scene by pipeline, and it is little to take the production site space, suit any adopt prior art and need to transform, occasion that the space, place is less uses.
Simultaneously,, replaced the loaded down with trivial details import equipment of original relative complex, saved the unit investment with the equipment of succinct practicality according to atomizing refrigerating unit of the present utility model.
Produce with the atomizing refrigerating unit according to cold-rolled steel sheet pot galvanize of the present utility model, be preferably, the injection direction of described jet head sets shower nozzle is perpendicular to the steel plate plane.Thus, can improve the atomizing cooling efficiency.
Produce with the atomizing refrigerating unit according to cold-rolled steel sheet pot galvanize of the present utility model, be preferably, number cover jet apparatus is set in the both sides, plane that are parallel to steel plate (G).According to producing and the cooling requirement, can further reduce band steel cooling temperature at the steel plate planar both sides described jet apparatus of several covers of parallel again increase.
Produce with the atomizing refrigerating unit according to cold-rolled steel sheet pot galvanize of the present utility model, be preferably, if described shower nozzle be provided with that spacing is controlled at the described shower nozzle of 30-50mm. spacing is set greater than 50mm, then exist and fail complete shower cooling zone; As described shower nozzle spacing is set less than 30mm, then make the shower cooling inefficiency.Thus, can further improve the atomizing cooling efficiency.
Produce with the atomizing refrigerating unit according to cold-rolled steel sheet pot galvanize of the present utility model, be preferably, described pressurization cooling is communicated with stereoplasm tube with shower nozzle with water-supply pipe, and described pressurization cooling is communicated with metallic hose with shower nozzle with air-supply duct.
, be preferably with the atomizing refrigerating unit according to cold-rolled steel sheet pot galvanize production of the present utility model, described pressurization cooling is controlled at 1200-1800mm with the water-supply pipe and the shower cooling segment length of cooling with air-supply duct of pressurizeing, and meets the width of steel plate.
Produce with the atomizing refrigerating unit according to cold-rolled steel sheet pot galvanize of the present utility model, be preferably, described jet head sets lays respectively at band steel operation planar both sides.The described band steel operation of described shower nozzle distance plane is 100-150mm.If the described band steel operation of described shower nozzle distance interplanar spacing greater than 150mm, then exists and fails complete shower cooling zone; The described band steel operation of shower nozzle distance interplanar spacing then makes the shower cooling inefficiency less than 100mm as described.
Produce with the atomizing refrigerating unit according to cold-rolled steel sheet pot galvanize of the present utility model, be preferably, described capacity of sprinkler be water 0.45-0.65 liter/minute, gas 100-150 liter/minute.
Produce with the atomizing refrigerating unit according to cold-rolled steel sheet pot galvanize of the present utility model, be preferably, the spray orifice aperture of described aerosol shower nozzle is 6-10mm.The spray orifice aperture of described aerosol shower nozzle can with shower nozzle be provided with the described band steel operation of spacing shower nozzle distance plan range, and capacity of sprinkler take all factors into consideration setting.
According to cold-rolled steel sheet pot galvanize production atomizing refrigerating unit of the present utility model, be preferably, described pressurization cooling is cooled off the non-inlet end end socket shutoff of using air-supply duct with the non-feed-water end and the described pressurization of water-supply pipe.Thus, can improve shower cooling efficient.
Description of drawings
Figure 1 shows that a kind of cold-rolled steel sheet pot galvanize production refrigerating unit synoptic diagram of prior art.
Fig. 2 is that the A-A of Fig. 1 is to view.
Fig. 3 is that cold-rolled steel sheet pot galvanize of the present utility model is produced with atomizing refrigerating unit overall arrangement front view, and the B-B that also is Fig. 4 is to view.
Fig. 4 is that the vertical view with atomizing refrigerating unit overall arrangement is produced in the pot galvanize of the utility model cold-rolled steel sheet.
Among the figure, 1 is pressurization cooling water-supply pipe, and 2 is that air-supply duct is used in the pressurization cooling, and 3 is shower nozzle, and 4 is pressure regulator valve, and G is a steel plate.
Embodiment
Below, in conjunction with the accompanying drawings, atomizing refrigerating unit of the present utility model is elaborated with embodiment.
Above certain pot galvanize unit zinc pot, replace original air cooling equipment, atomizing refrigerating unit of the present utility model is installed.To the online cooling that atomizes of high-strength steel outside plate and IF steel inner panel.
The cold-rolled steel sheet pot galvanize is produced and is comprised with the atomizing refrigerating unit:
The pressurization cooling that is arranged at the operation aisle upper and lower of band steel plate G is respectively cooled off with air-supply duct 2 with water-supply pipe 1, pressurization, and the spacing that described pressurization cooling is cooled off with air-supply duct 2 with water-supply pipe 1 and pressurization is controlled at about 500mm.With the width of band steel plate G correspondingly, described shower cooling segment length is 1800mm.
Perpendicular to the parallel planes of walking of band steel plate G, two groups of shower nozzles 3 that above-mentioned pressurization cooling is communicated with air-supply duct 2 with water-supply pipe 1 and pressurization cooling are arranged at band steel plate G operation planar both sides respectively.
Refrigerative band steel G to be sprayed passes through the shower cooling working zone with vertical configuration.
The inlet end that cools off with air-supply duct 2 with the feed-water end and the described pressurization of water-supply pipe 1 in described pressurization cooling is provided with pressure regulator valve 4 respectively.
According to present embodiment, described pressurization cooling is communicated with stereoplasm tube with water-supply pipe 1 and shower nozzle 3, and described pressurization is cooled off usefulness air-supply duct 2 and shower nozzle 3 and is communicated with metallic hose.
Described shower nozzle 3 spaced sets are provided with spacing and are controlled at 50mm, and the described band steel operation of described shower nozzle 3 distances plane is 150mm, so, makes belt steel surface be subjected to complete shower cooling, guarantees shower cooling efficient.
The non-inlet end end socket shutoff that described pressurization cooling is used air-supply duct 2 with the non-feed-water end and the described pressurization cooling of water-supply pipe 1.
According to present embodiment, the spray orifice aperture of described shower nozzle 3 is 8mm.Being provided with under the described band steel operation of spacing, the shower nozzle distance plan range condition of above-mentioned shower nozzle 3, capacity of sprinkler water reaches 0.55 liter/minute, gas flow and reaches 120 liters/minute.
In the present embodiment, system's heatproof reaches 300 degree.For reducing the retrofit work amount, the air outlet and the structure that keep former bellows to the full extent, utilize between two air ports the spacing about 300mm to place two groups of shower nozzles, and remove the steel plate muscle at bellows edge, with the spacing that keeps two groups of shower nozzles still about 400mm, it is current not influence the band steel, and the broken belt fault takes place when preventing to be with the steel shake.
In the present embodiment, fog system is provided with manually and automatic pressure variable valve 4 at the inlet end that described pressurization cooling is cooled off with air-supply duct 2 with the feed-water end and the described pressurization of water-supply pipe 1 respectively, can use manual regulation air pressure and hydraulic pressure.Simultaneously, be provided with solenoid electric valve, with automatic unlatching and shut-off device work.Jet head sets is symmetricly set in band steel both sides respectively.The width of jet head sets is 1800mm and 1200mm, and is consistent with the width of band steel plate.
In the present embodiment, operating pressure is hydraulic pressure 3bar, air pressure 5bar.
At the unit time steel transportation amount is 5,000-5, and the 100Kg/ timesharing, recording the heat that one group of shower nozzle of per minute takes away is 13,000-14,200KJ; One group of shower nozzle can be lowered the temperature: 8-10 ℃.Arrange that 2 groups of shower nozzles to the cooling that atomizes of the thick band steel of 2mm, can lower the temperature 16-18 ℃; To the cooling that atomizes of the thick band steel of 0.5mm, can lower the temperature 58-63 ℃.
Increased by one group of jet apparatus except respectively be parallel to steel plate in both sides, with reinforcing band steel cooling performance, other are as embodiment 1, and cooling atomizes.
The spacing of cooling off with air-supply duct 2 with water-supply pipe 1 and pressurization except described pressurization cooling is controlled at about 450mm, the spacing that is provided with of described shower nozzle 3 is controlled at 30-40mm, described capacity of sprinkler be water 0.55-0.65 liter/minute, gas 120-130 liter/minute, the spray orifice aperture of described shower nozzle is outside the 10mm, other are as embodiment 1, and cooling atomizes.
Embodiment 4
Except the described shower nozzle described band steel operation of distance interplanar spacing is controlled at 100mm, the spacing that is provided with of described shower nozzle is controlled at 30-40mm, described shower cooling segment length is controlled at 1200mm, described capacity of sprinkler be water 0.55-0.65 liter/minute, gas 120-130 liter/minute, the spray orifice aperture of described shower nozzle is outside the 6mm, other are as embodiment 1, and cooling atomizes.
In addition, at the actual width size of band steel, can consider to control the spray width of spray beam with the mode of plug or electrically-controlled valve.
According to atomizing refrigerating unit of the present utility model, atomizing water coolant after the described pressurization is before water liquid leaves shower nozzle, form by pressurised stream and forced air are mixed in shower nozzle inside, therefore, water smoke from shower nozzle does not exist water, the asynchronous cooling quality problems that occur of gas, can not break down yet.
According to atomizing refrigerating unit of the present utility model, because of adopting the atomizing cooling principle, reach higher rate of cooling, alleviated the efflorescence defective of band steel effectively.
According to atomizing refrigerating unit of the present utility model, the pressurization size and the flow of current, air-flow are controlled, and its control requires and precision is not high, than the control requirement reduction significantly of prior art.Both having made hydraulic pressure just in case fluctuation, also only is to cause in the aerosol of ejection moisture content low, loss heat exchange effect, but can not cause other serious accidents, safe and reliable.
According to atomizing refrigerating unit of the present utility model, described water pipe and tracheae insert the production scene by pipeline, and it is little to take the production site space, suit any adopt prior art and need to transform, occasion that the space, place is less uses.
Simultaneously,, replaced the loaded down with trivial details import equipment of original relative complex, saved the unit investment with the equipment of succinct practicality according to atomizing refrigerating unit of the present utility model.
Claims (7)
1. a cold-rolled steel sheet pot galvanize is produced with the atomizing refrigerating unit, comprise the jet apparatus that is separately positioned on steel plate (G) both sides, plane, it is characterized in that, described jet apparatus comprise pressurization cooling with water-supply pipe (1), pressurization cooling with air-supply duct (2) be positioned at steel plate (G) planar side and cool off with water-supply pipe (1) with above-mentioned pressurization and pressurize and cool off the one group of shower nozzle (3) that is communicated with air-supply duct (2).
2. a kind of cold-rolled steel sheet pot galvanize according to claim 1 is produced with the atomizing refrigerating unit, it is characterized in that, the inlet end that cools off with air-supply duct (2) with the feed-water end and the described pressurization of water-supply pipe (1) in described pressurization cooling is provided with pressure regulator valve (4).
3. a kind of cold-rolled steel sheet pot galvanize according to claim 1 is produced with the atomizing refrigerating unit, it is characterized in that, number cover jet apparatus is set in the both sides, plane that are parallel to steel plate (G).
4. a kind of cold-rolled steel sheet pot galvanize according to claim 1 is produced with the atomizing refrigerating unit, it is characterized in that, the injection direction of described shower nozzle (3) group shower nozzle is perpendicular to the steel plate plane.
5. a kind of cold-rolled steel sheet pot galvanize according to claim 1 is produced with the atomizing refrigerating unit, it is characterized in that, described pressurization cooling is communicated with stereoplasm tube with shower nozzle (3) with water-supply pipe (1), and described pressurization cooling is communicated with metallic hose with shower nozzle (3) with air-supply duct (2).
6. a kind of cold-rolled steel sheet pot galvanize according to claim 1 is produced with the atomizing refrigerating unit, it is characterized in that the spacing of the adjacent shower nozzle of described jet head sets (3) is 30-50mm, and described shower nozzle (3) distance described steel plate (G) interplanar spacing is 100-150mm.
7. a kind of cold-rolled steel sheet pot galvanize according to claim 1 is produced and is used the atomizing refrigerating unit, it is characterized in that, the non-inlet end end socket shutoff that described pressurization cooling is used air-supply duct (2) with the non-feed-water end and the described pressurization cooling of water-supply pipe (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200691560U CN201024208Y (en) | 2007-04-20 | 2007-04-20 | Atomized cooling device for cold-rolled plate hot galvanizing production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200691560U CN201024208Y (en) | 2007-04-20 | 2007-04-20 | Atomized cooling device for cold-rolled plate hot galvanizing production |
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| CN201024208Y true CN201024208Y (en) | 2008-02-20 |
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| CNU2007200691560U Expired - Fee Related CN201024208Y (en) | 2007-04-20 | 2007-04-20 | Atomized cooling device for cold-rolled plate hot galvanizing production |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113355624A (en) * | 2021-05-15 | 2021-09-07 | 霸州市三钢科技有限公司 | Cooling device for hot galvanizing strip steel |
| CN113604766A (en) * | 2021-07-21 | 2021-11-05 | 浙江协和薄钢科技有限公司 | Cooling device of strip steel hot galvanizing machine |
| CN116463576A (en) * | 2023-04-25 | 2023-07-21 | 扬州澳洋顺昌金属材料有限公司 | Galvanized pipe cooling passivation equipment |
-
2007
- 2007-04-20 CN CNU2007200691560U patent/CN201024208Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113355624A (en) * | 2021-05-15 | 2021-09-07 | 霸州市三钢科技有限公司 | Cooling device for hot galvanizing strip steel |
| CN113355624B (en) * | 2021-05-15 | 2022-07-05 | 霸州市三钢科技有限公司 | Cooling device for hot galvanizing strip steel |
| CN113604766A (en) * | 2021-07-21 | 2021-11-05 | 浙江协和薄钢科技有限公司 | Cooling device of strip steel hot galvanizing machine |
| CN113604766B (en) * | 2021-07-21 | 2023-03-28 | 浙江协和薄钢科技有限公司 | Cooling device of strip steel hot galvanizing machine |
| CN116463576A (en) * | 2023-04-25 | 2023-07-21 | 扬州澳洋顺昌金属材料有限公司 | Galvanized pipe cooling passivation equipment |
| CN116463576B (en) * | 2023-04-25 | 2023-11-28 | 扬州澳洋顺昌金属材料有限公司 | Galvanized pipe cooling passivation equipment |
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Granted publication date: 20080220 Termination date: 20160420 |