CN107574395A - A kind of method and device for eliminating zinc flow liner - Google Patents
A kind of method and device for eliminating zinc flow liner Download PDFInfo
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- CN107574395A CN107574395A CN201710786637.1A CN201710786637A CN107574395A CN 107574395 A CN107574395 A CN 107574395A CN 201710786637 A CN201710786637 A CN 201710786637A CN 107574395 A CN107574395 A CN 107574395A
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- zinc
- air knife
- strip
- controlling
- zinc liquid
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- 239000011701 zinc Substances 0.000 title claims abstract description 168
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title claims abstract description 156
- 229910052725 zinc Inorganic materials 0.000 title claims abstract description 156
- 238000000034 method Methods 0.000 title claims abstract description 27
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 91
- 239000010959 steel Substances 0.000 claims abstract description 91
- 239000007788 liquid Substances 0.000 claims abstract description 71
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 22
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910001335 Galvanized steel Inorganic materials 0.000 claims abstract description 4
- 239000008397 galvanized steel Substances 0.000 claims abstract description 4
- 238000005246 galvanizing Methods 0.000 claims description 42
- 238000004519 manufacturing process Methods 0.000 claims description 21
- 229910052745 lead Inorganic materials 0.000 claims description 14
- 239000004411 aluminium Substances 0.000 abstract 2
- 230000036642 wellbeing Effects 0.000 abstract 1
- 230000007547 defect Effects 0.000 description 22
- 239000011248 coating agent Substances 0.000 description 13
- 238000000576 coating method Methods 0.000 description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 238000001816 cooling Methods 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 238000007747 plating Methods 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 4
- 238000009736 wetting Methods 0.000 description 4
- 229910000760 Hardened steel Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
Landscapes
- Coating With Molten Metal (AREA)
Abstract
The invention provides a kind of method and device for eliminating zinc flow liner, methods described is applied in hot-dip galvanized steel strip product, including：It is 461~465 DEG C to control zinc liquid temperature in zinc-plated producing line；Aluminium Al mass percent is 0.2~0.22% in the zinc liquid；Control the distance between air knife and the belt steel surface≤16mm；The gas pressure for controlling the air knife is 0.12~0.16MPa；Wherein, the chill steel plate flatness IU of the belt steel product<6；So, it it is 461~465 DEG C by the zinc liquid temperature control in zinc pot, it is 0.2~0.22% by the mass percent of aluminium Al in zinc liquid, and air knife distance and air knife flow are controlled according to the method described above, the zinc flow liner of belt steel surface can effectively be eliminated, the quality and grade of hot-dip galvanized steel strip product are improved, and then improves economic well-being of workers and staff.
Description
Technical Field
The invention belongs to the technical field of metallurgy, and particularly relates to a method and a device for eliminating zinc flow lines.
Background
In recent years, zinc flow mark defects of hot galvanizing products are taken as typical surface defects, which seriously affect the coating and further deep processing of users and are difficult to meet the requirements of high-end outer plates.
The generation of zinc flow lines affects the surface quality of the strip steel, reduces the grade of products, further causes great loss of economic benefits of companies, and also seriously affects the normal production rhythm and further reduces the working efficiency.
Disclosure of Invention
Aiming at the problems in the prior art, the embodiment of the invention provides a method and a device for eliminating zinc flow lines, which are used for solving the technical problem that the surface quality of strip steel is reduced because the zinc flow lines are easy to appear on the surface of the strip steel when a hot galvanizing product is produced in the prior art.
The invention provides a method for eliminating zinc flow lines, which is applied to hot-dip galvanized strip steel products and comprises the following steps:
controlling the temperature of zinc liquid in a galvanizing production line to be 461-465 ℃; the mass percentage of aluminum Al in the zinc liquid is 0.2-0.22%;
controlling the distance between the air knife and the surface of the strip steel to be less than or equal to 16 mm; controlling the gas pressure of the air knife to be 0.12-0.16 MPa; wherein the cold-hard steel plate straightness IU of the strip steel product is less than 6.
In the scheme, the angle of the air knife is-6-1 degrees.
In the scheme, the running speed of the strip steel product is 97-103 m/min.
In the scheme, the mass percent of Pb in the zinc liquid is less than or equal to 0.025 percent; the balance of zinc and Zn.
5. The method according to claim 1, wherein the sum of the distances between the air knives on both sides of the steel strip and the steel strip is 12 to 15 mm.
The invention also provides a device for eliminating zinc flow lines, which comprises:
the first control unit is used for controlling the temperature of zinc liquid in a galvanizing production line to be 461-465 ℃; the mass percentage of aluminum Al in the zinc liquid is 0.2-0.22%;
the second control unit is used for controlling the distance between the air knife and the surface of the strip steel to be less than or equal to 16 mm; controlling the gas pressure of the air knife to be 0.12-0.16 MPa; wherein the cold-hard steel plate straightness IU of the strip steel product is less than 6.
In the scheme, the angle of the air knife is-6-1 degrees.
In the scheme, the running speed of the strip steel product is 97-103 m/min.
In the scheme, the mass percent of Pb in the zinc liquid is less than or equal to 0.025 percent; the balance of zinc and Zn.
In the scheme, the sum of the distances between the air knives on the two sides of the strip steel and the strip steel is 12-15 mm.
The invention provides a method and a device for eliminating zinc flow lines, wherein the method is applied to hot-dip galvanized strip steel products and comprises the following steps: controlling the temperature of zinc liquid in a galvanizing production line to be 461-465 ℃; the mass percentage of aluminum Al in the zinc liquid is 0.2-0.22%; controlling the distance between the air knife and the surface of the strip steel to be less than or equal to 16 mm; controlling the gas pressure of the air knife to be 0.12-0.16 MPa; wherein the cold-hardened steel plate straightness IU of the strip steel product is less than 6; therefore, the temperature of the zinc liquid in the zinc pot is controlled to be 461-465 ℃, the mass percent of aluminum and Al in the zinc liquid is 0.2-0.22%, and the air knife distance and the air knife flow are controlled according to the method, so that the zinc flow lines on the surface of the strip steel can be effectively eliminated, the quality and the grade of the hot-dip galvanized strip steel product are improved, and the economic benefit is further improved.
Drawings
FIG. 1 is a schematic flow chart of a method for eliminating zinc streaks according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a device for eliminating zinc flow marks according to a second embodiment of the present invention.
Detailed Description
The invention provides a method and a device for eliminating zinc flow lines, wherein the method is applied to hot-dip galvanized strip steel products and comprises the following steps: controlling the temperature of zinc liquid in a galvanizing production line to be 461-465 ℃; the mass percentage of aluminum Al in the zinc liquid is 0.2-0.22%; controlling the distance between the air knife and the surface of the strip steel to be less than or equal to 16 mm; controlling the gas pressure of the air knife to be 0.12-0.16 MPa; wherein the cold-hard steel plate straightness IU of the strip steel product is less than 6.
The technical solution of the present invention is further described in detail by the accompanying drawings and the specific embodiments.
Example one
The embodiment provides a method for eliminating zinc flow lines, which is applied to a hot-dip galvanized steel strip product, and as shown in fig. 1, the method comprises the following steps:
s101, controlling the temperature of zinc liquid in a galvanizing production line to be 461-465 ℃; the mass percentage of aluminum Al in the zinc liquid is 0.2-0.22%;
in the step, in a hot galvanizing production line, the higher the temperature of zinc liquid in a zinc pot is, the higher the temperature of strip steel taken out of the pot is, the larger the heat in the strip steel is, and the more difficult the zinc flow pattern defect is generated; however, if the temperature of the zinc liquid is too high, zinc dross is easily formed, zinc dross defects are generated, and the surface quality of the product is affected.
Therefore, the temperature of the zinc liquid in the galvanizing production line is controlled to be 461-465 ℃; here, the zinc liquid includes Al, zinc Zn, and lead Pb. Al and Pb in the zinc liquid have certain influence on the fluidity of the zinc liquid, and generally, the main influence of aluminum added in the zinc liquid on hot galvanizing is to improve the adhesiveness of a zinc coating, increase the viscosity and surface tension of the zinc liquid, reduce the wetting capacity of the zinc liquid on a steel plate, prolong the galvanizing time and form scum with iron in the zinc liquid. In the embodiment, the mass percentage of aluminum Al in the zinc liquid is 0.2-0.22%.
For lead Pb, the mass percent of Pb is increased, and the fluidity of the zinc liquid is improved. On the contrary, the spangles are reduced, and the fluidity is reduced. Therefore, Pb in the embodiment is less than or equal to 0.025 percent; the balance of zinc and Zn.
It should be noted that, before hot galvanizing the strip, the original surface defects of the strip after hot galvanizing cannot be covered but are more obvious. Therefore, if the original plate has the transverse stripe defect, transverse stripes can also appear on the plate surface after the galvanization, and the plate surface is clearer than the original plate surface; if the surface of the original plate has serious central wave or edge wave, the thickness of the zinc layer is locally and regularly uneven at the edge or the central part, and the zinc flow line defect is generated at the thicker part of the plating layer. Therefore, the cold-hard steel plate straightness IU of the strip steel product coming out from the last rolling process of the galvanizing production line is less than 6, and the surface of the strip steel has no transverse stripes.
S102, controlling the distance between the air knife and the surface of the strip steel to be less than or equal to 16 mm; controlling the gas pressure of the air knife to be 0.12-0.16 MPa;
in the step, the main factors influencing the zinc flow pattern are the distance between the air knife nozzle and the strip steel and the flow of the air knife. For example, when the strip speed is low, the air knife distance needs to be increased under the same pressure to control the thickness of the coating. The distance is large, and the pressure is high, so that the fluctuation of the strip steel distance and the coating thickness is easily caused. The cooling of the molten zinc is accelerated even under high pressure, and the fluidity of the molten zinc is reduced.
Therefore, the distance between the air knife and the surface of the strip steel is controlled to be less than or equal to 16mm in the embodiment; and controlling the sum of the distances between the air knives on the two sides of the strip steel and the strip steel to be 12-15 mm. Controlling the body pressure of the air knife to be 0.12-0.16 MPa; controlling the angle of the air knife as follows: -6 to 1 °; and the running speed of the strip steel is controlled to be 97-103 m/min.
Example two
In accordance with a first embodiment, the present embodiment provides an apparatus for eliminating zinc streaks, as shown in fig. 2, the apparatus includes: a first control unit 21 and a second control unit 22; wherein,
in a hot galvanizing production line, the higher the temperature of zinc liquid in a zinc pot is, the higher the temperature of strip steel taken out of the pot is, the larger the heat in the strip steel is, and the more difficult the zinc flow pattern defect is generated; however, if the temperature of the zinc liquid is too high, zinc dross is easily formed, zinc dross defects are generated, and the surface quality of the product is affected.
Therefore, the first control unit 21 in this embodiment is used for controlling the temperature of the molten zinc in the galvanizing production line to be 461-465 ℃; here, the zinc liquid includes Al, zinc Zn, and lead Pb. Al and Pb in the zinc liquid have certain influence on the fluidity of the zinc liquid, and generally, the main influence of aluminum added in the zinc liquid on hot galvanizing is to improve the adhesiveness of a zinc coating, increase the viscosity and surface tension of the zinc liquid, reduce the wetting capacity of the zinc liquid on a steel plate, prolong the galvanizing time and form scum with iron in the zinc liquid. In the embodiment, the mass percentage of aluminum Al in the zinc liquid is 0.2-0.22%.
For lead Pb, the mass percent of Pb is increased, and the fluidity of the zinc liquid is improved. On the contrary, the spangles are reduced, and the fluidity is reduced. Therefore, Pb in the embodiment is less than or equal to 0.025 percent; the balance of zinc and Zn.
It should be noted that, before hot galvanizing the strip, the original surface defects of the strip after hot galvanizing cannot be covered but are more obvious. Therefore, if the original plate has the transverse stripe defect, transverse stripes can also appear on the plate surface after the galvanization, and the plate surface is clearer than the original plate surface; if the surface of the original plate has serious central wave or edge wave, the thickness of the zinc layer is locally and regularly uneven at the edge or the central part, and the zinc flow line defect is generated at the thicker part of the plating layer. Therefore, the cold-hard steel plate straightness IU of the strip steel product coming out from the last rolling process of the galvanizing production line is less than 6, and the surface of the strip steel has no transverse stripes.
Further, the main factors influencing the zinc flow pattern are the distance between the air knife nozzle and the strip steel and the flow of the air knife. For example, when the strip speed is low, the air knife distance needs to be increased under the same pressure to control the thickness of the coating. The distance is large, and the pressure is high, so that the fluctuation of the strip steel distance and the coating thickness is easily caused. The cooling of the molten zinc is accelerated even under high pressure, and the fluidity of the molten zinc is reduced.
Therefore, in the embodiment, the second control unit 21 controls the distance between the air knife and the surface of the strip steel to be less than or equal to 16 mm; and controlling the sum of the distances between the air knives on the two sides of the strip steel and the strip steel to be 12-15 mm. Controlling the body pressure of the air knife to be 0.12-0.16 MPa; controlling the angle of the air knife as follows: -6 to 1 °; and the running speed of the strip steel is controlled to be 97-103 m/min.
In practical applications, the first control unit 21 and the second control unit 22 may be implemented by a Programmable Logic Controller (PLC).
EXAMPLE III
In practical application, when the method provided by the first embodiment and the device provided by the second embodiment are used for hot galvanizing of a wide outer plate, the specific flow is as follows:
in a hot galvanizing production line, the higher the temperature of zinc liquid in a zinc pot is, the higher the temperature of strip steel taken out of the pot is, the larger the heat in the strip steel is, and the more difficult the zinc flow pattern defect is generated; however, if the temperature of the zinc liquid is too high, zinc dross is easily formed, zinc dross defects are generated, and the surface quality of the product is affected.
Therefore, the temperature of the zinc liquid in the galvanizing production line is controlled to be 463 ℃; here, the zinc liquid includes Al, zinc Zn, and lead Pb. Al and Pb in the zinc liquid have certain influence on the fluidity of the zinc liquid, and generally, the main influence of aluminum added in the zinc liquid on hot galvanizing is to improve the adhesiveness of a zinc coating, increase the viscosity and surface tension of the zinc liquid, reduce the wetting capacity of the zinc liquid on a steel plate, prolong the galvanizing time and form scum with iron in the zinc liquid. In this embodiment, the mass percentage of Al in the molten zinc is 0.21%.
For lead Pb, the mass percent of Pb is increased, and the fluidity of the zinc liquid is improved. On the contrary, the spangles are reduced, and the fluidity is reduced. Therefore, the mass percent of Pb in the embodiment is 0.023%; the balance of zinc and Zn.
It should be noted that, before hot galvanizing the strip, the original surface defects of the strip after hot galvanizing cannot be covered but are more obvious. Therefore, if the original plate has the transverse stripe defect, transverse stripes can also appear on the plate surface after the galvanization, and the plate surface is clearer than the original plate surface; if the surface of the original plate has serious central wave or edge wave, the thickness of the zinc layer is locally and regularly uneven at the edge or the central part, and the zinc flow line defect is generated at the thicker part of the plating layer. Therefore, the straightness IU of the cold-hard steel plate of the strip steel product coming out from the last rolling process of the galvanizing production line is 5, and the surface of the strip steel has no transverse stripes.
Further, the main factors influencing the zinc flow pattern are the distance between the air knife nozzle and the strip steel and the flow of the air knife. For example, when the strip speed is low, the air knife distance needs to be increased under the same pressure to control the thickness of the coating. The distance is large, and the pressure is high, so that the fluctuation of the strip steel distance and the coating thickness is easily caused. The cooling of the molten zinc is accelerated even under high pressure, and the fluidity of the molten zinc is reduced.
Therefore, the distance between the air knife and the surface of the strip steel is controlled to be 14mm in the embodiment; and controlling the sum of the distances between the air knives on the two sides of the strip steel and the strip steel to be 13 mm. Controlling the pressure of the air knife to be 0.15 MPa; controlling the angle of the air knife to be 3 degrees; and the running speed of the strip steel is controlled to be 100 m/min.
The wide outer plate after hot galvanizing has no zinc flow lines.
Example four
In practical application, when the method provided by the first embodiment and the device provided by the second embodiment are used for hot galvanizing of another wide outer plate, the specific flow is as follows:
in a hot galvanizing production line, the higher the temperature of zinc liquid in a zinc pot is, the higher the temperature of strip steel taken out of the pot is, the larger the heat in the strip steel is, and the more difficult the zinc flow pattern defect is generated; however, if the temperature of the zinc liquid is too high, zinc dross is easily formed, zinc dross defects are generated, and the surface quality of the product is affected.
Therefore, the temperature of the zinc liquid in the galvanizing production line is controlled to be 462 ℃ in the embodiment; here, the zinc liquid includes Al, zinc Zn, and lead Pb. Al and Pb in the zinc liquid have certain influence on the fluidity of the zinc liquid, and generally, the main influence of aluminum added in the zinc liquid on hot galvanizing is to improve the adhesiveness of a zinc coating, increase the viscosity and surface tension of the zinc liquid, reduce the wetting capacity of the zinc liquid on a steel plate, prolong the galvanizing time and form scum with iron in the zinc liquid. In this embodiment, the mass percentage of Al in the molten zinc is 0.21%.
For lead Pb, the mass percent of Pb is increased, and the fluidity of the zinc liquid is improved. On the contrary, the spangles are reduced, and the fluidity is reduced. Therefore, the mass percent of Pb in the embodiment is 0.021%; the balance of zinc and Zn.
It should be noted that, before hot galvanizing the strip, the original surface defects of the strip after hot galvanizing cannot be covered but are more obvious. Therefore, if the original plate has the transverse stripe defect, transverse stripes can also appear on the plate surface after the galvanization, and the plate surface is clearer than the original plate surface; if the surface of the original plate has serious central wave or edge wave, the thickness of the zinc layer is locally and regularly uneven at the edge or the central part, and the zinc flow line defect is generated at the thicker part of the plating layer. Therefore, the straightness IU of the cold-hard steel plate of the strip steel product coming out from the last rolling process of the galvanizing production line is 4, and the surface of the strip steel has no transverse stripes.
Further, the main factors influencing the zinc flow pattern are the distance between the air knife nozzle and the strip steel and the flow of the air knife. For example, when the strip speed is low, the air knife distance needs to be increased under the same pressure to control the thickness of the coating. The distance is large, and the pressure is high, so that the fluctuation of the strip steel distance and the coating thickness is easily caused. The cooling of the molten zinc is accelerated even under high pressure, and the fluidity of the molten zinc is reduced.
Therefore, the distance between the air knife and the surface of the strip steel is controlled to be 13mm in the embodiment; and controlling the sum of the distances between the air knives on the two sides of the strip steel and the strip steel to be 14 mm. Controlling the pressure of the air knife to be 0.14 MPa; controlling the angle of the air knife to be 3 degrees; and the running speed of the strip steel is controlled to be 98 m/min.
The wide outer plate after hot galvanizing has no zinc flow lines.
The method and the device for eliminating the zinc flow lines provided by the embodiment of the invention have the following beneficial effects that:
the method and the device for eliminating the zinc flow lines provided by the embodiment of the invention are applied to hot-dip galvanized strip steel products and comprise the following steps: controlling the temperature of zinc liquid in a galvanizing production line to be 461-465 ℃; the mass percentage of aluminum Al in the zinc liquid is 0.2-0.22%; controlling the distance between the air knife and the surface of the strip steel to be less than or equal to 16 mm; controlling the gas pressure of the air knife to be 0.12-0.16 MPa; wherein the cold-hardened steel plate straightness IU of the strip steel product is less than 6; therefore, the temperature of the zinc liquid in the zinc pot is controlled to be 461-465 ℃, the mass percent of aluminum and Al in the zinc liquid is 0.2-0.22%, and the air knife distance and the air knife flow are controlled according to the method, so that the zinc flow lines on the surface of the strip steel can be effectively eliminated, the quality and the grade of the hot-dip galvanized strip steel product are improved, and the economic benefit is further improved.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, and any modifications, equivalents, improvements, etc. that are within the spirit and principle of the present invention should be included in the present invention.
Claims (10)
1. The method for eliminating the zinc flow lines is applied to a hot-dip galvanized steel strip product and comprises the following steps:
controlling the temperature of zinc liquid in a galvanizing production line to be 461-465 ℃; the mass percentage of aluminum Al in the zinc liquid is 0.2-0.22%;
controlling the distance between the air knife and the surface of the strip steel to be less than or equal to 16 mm; controlling the gas pressure of the air knife to be 0.12-0.16 MPa; wherein the cold-hard steel plate straightness IU of the strip steel product is less than 6.
2. The method of claim 1, wherein the air knife has an angle of-6 to 1 °.
3. The method of claim 1, wherein the strip product is run at a speed of 97 to 103 m/min.
4. The method of claim 1, wherein the mass percent of Pb in the zinc bath is less than or equal to 0.025%; the balance of zinc and Zn.
5. The method according to claim 1, wherein the sum of the distances between the air knives on both sides of the steel strip and the steel strip is 12 to 15 mm.
6. An apparatus for eliminating zinc flow marks, the apparatus comprising:
the first control unit is used for controlling the temperature of zinc liquid in a galvanizing production line to be 461-465 ℃; the mass percentage of aluminum Al in the zinc liquid is 0.2-0.22%;
the second control unit is used for controlling the distance between the air knife and the surface of the strip steel to be less than or equal to 16 mm; controlling the gas pressure of the air knife to be 0.12-0.16 MPa; wherein the cold-hard steel plate straightness IU of the strip steel product is less than 6.
7. The apparatus of claim 6, wherein the air knife has an angle of-6 to 1 °.
8. The apparatus of claim 6, wherein the running speed of the strip product is 97 to 103 m/min.
9. The apparatus of claim 6, wherein the mass percent of Pb in said zinc bath is less than or equal to 0.025%; the balance of zinc and Zn.
10. The apparatus of claim 6, wherein the sum of the distances between the air knives on both sides of the strip and the strip is 12 to 15 mm.
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| CN201710786637.1A CN107574395B (en) | 2017-09-04 | 2017-09-04 | Method and device for eliminating zinc flow lines |
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| CN201710786637.1A CN107574395B (en) | 2017-09-04 | 2017-09-04 | Method and device for eliminating zinc flow lines |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113430478A (en) * | 2021-05-31 | 2021-09-24 | 武汉钢铁有限公司 | Method for eliminating zinc corrugation defect of alloyed hot-dip galvanized steel sheet |
| CN113481455A (en) * | 2021-07-08 | 2021-10-08 | 攀钢集团攀枝花钢钒有限公司 | Method for producing high-surface-quality zinc-aluminum-magnesium coated steel strip/plate by using air knife |
| CN115233129A (en) * | 2022-07-18 | 2022-10-25 | 首钢京唐钢铁联合有限责任公司 | A control method and device for hot-dip galvanizing of strip steel and strip steel |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5069158A (en) * | 1990-03-27 | 1991-12-03 | Italimpianti Of America, Inc. | Hydrostatic bearing support of strip |
| EP2045349A1 (en) * | 2007-10-05 | 2009-04-08 | Linde Aktiengesellschaft | Method and apparatus for continuous hot-dip coating of metal strips |
| CN101914742A (en) * | 2010-08-16 | 2010-12-15 | 攀钢集团钢铁钒钛股份有限公司 | Continuous hot-dip galvanized thin coating production process for strip steel |
| CN103397290A (en) * | 2013-08-01 | 2013-11-20 | 首钢总公司 | Method for eliminating black transverse striation defects on surface of zinc-plated sheet |
| CN103966537A (en) * | 2014-04-21 | 2014-08-06 | 鞍钢股份有限公司 | Method for controlling zinc flow marks of thick-material thick-coating hot-dip galvanized product |
| CN105296907A (en) * | 2015-11-12 | 2016-02-03 | 首钢总公司 | Method for improving quality of galvanized layer of galvanized automobile sheet |
-
2017
- 2017-09-04 CN CN201710786637.1A patent/CN107574395B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5069158A (en) * | 1990-03-27 | 1991-12-03 | Italimpianti Of America, Inc. | Hydrostatic bearing support of strip |
| EP2045349A1 (en) * | 2007-10-05 | 2009-04-08 | Linde Aktiengesellschaft | Method and apparatus for continuous hot-dip coating of metal strips |
| CN101914742A (en) * | 2010-08-16 | 2010-12-15 | 攀钢集团钢铁钒钛股份有限公司 | Continuous hot-dip galvanized thin coating production process for strip steel |
| CN103397290A (en) * | 2013-08-01 | 2013-11-20 | 首钢总公司 | Method for eliminating black transverse striation defects on surface of zinc-plated sheet |
| CN103966537A (en) * | 2014-04-21 | 2014-08-06 | 鞍钢股份有限公司 | Method for controlling zinc flow marks of thick-material thick-coating hot-dip galvanized product |
| CN105296907A (en) * | 2015-11-12 | 2016-02-03 | 首钢总公司 | Method for improving quality of galvanized layer of galvanized automobile sheet |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113430478A (en) * | 2021-05-31 | 2021-09-24 | 武汉钢铁有限公司 | Method for eliminating zinc corrugation defect of alloyed hot-dip galvanized steel sheet |
| CN113481455A (en) * | 2021-07-08 | 2021-10-08 | 攀钢集团攀枝花钢钒有限公司 | Method for producing high-surface-quality zinc-aluminum-magnesium coated steel strip/plate by using air knife |
| CN115233129A (en) * | 2022-07-18 | 2022-10-25 | 首钢京唐钢铁联合有限责任公司 | A control method and device for hot-dip galvanizing of strip steel and strip steel |
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