CN110964981A - Galvanized pipe and manufacturing method thereof - Google Patents
Galvanized pipe and manufacturing method thereof Download PDFInfo
- Publication number
- CN110964981A CN110964981A CN201911107572.9A CN201911107572A CN110964981A CN 110964981 A CN110964981 A CN 110964981A CN 201911107572 A CN201911107572 A CN 201911107572A CN 110964981 A CN110964981 A CN 110964981A
- Authority
- CN
- China
- Prior art keywords
- galvanizing
- pipe
- hot
- galvanized
- percent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 238000005246 galvanizing Methods 0.000 claims abstract description 81
- 239000012535 impurity Substances 0.000 claims abstract description 4
- 229910052725 zinc Inorganic materials 0.000 claims description 20
- 239000011701 zinc Substances 0.000 claims description 20
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 18
- 229910052782 aluminium Inorganic materials 0.000 claims description 13
- 239000007788 liquid Substances 0.000 claims description 13
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 9
- 238000007747 plating Methods 0.000 claims description 8
- 238000005406 washing Methods 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000002161 passivation Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000002791 soaking Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims 3
- 238000000034 method Methods 0.000 abstract description 7
- 229910001335 Galvanized steel Inorganic materials 0.000 abstract description 4
- 239000008397 galvanized steel Substances 0.000 abstract description 4
- 239000010410 layer Substances 0.000 description 15
- 229910000831 Steel Inorganic materials 0.000 description 9
- 239000010959 steel Substances 0.000 description 9
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 239000002893 slag Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000000137 annealing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000003618 dip coating Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000006104 solid solution Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910001567 cementite Inorganic materials 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- KSOKAHYVTMZFBJ-UHFFFAOYSA-N iron;methane Chemical compound C.[Fe].[Fe].[Fe] KSOKAHYVTMZFBJ-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- 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
- C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
-
- 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
-
- 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
- C23C2/26—After-treatment
-
- 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
- C23C2/34—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
- C23C2/36—Elongated material
- C23C2/38—Wires; Tubes
Abstract
The galvanized pipe comprises a pipe body, wherein the galvanizing amount of a hot galvanizing layer on the pipe body is 500g per square meter, and the pipe body comprises the following components in mass percent: 0.08% -0.12%; si: 0.07 percent to 0.11 percent; mn: 0.5% -1.0%: p is less than 0.025 percent; s is less than 0.020%; ni: 0.02-0.03%; the balance being Fe and unavoidable impurities. The invention realizes the manufacture of the high-thickness galvanized steel pipe by reasonably configuring the components of the pipe body and using the twice galvanizing process, and has the advantage of high galvanizing layer thickness.
Description
Technical Field
The invention relates to the technical field of galvanized pipe production, in particular to a galvanized pipe and a manufacturing method thereof.
Background
The galvanized pipe is used for galvanizing a common steel pipe in order to improve the corrosion resistance of the steel pipe. The hot dip coating method is generally adopted, and the actual galvanizing amount of the surface galvanizing coat of the prior galvanized pipe is 300g/m2Therefore, the actual galvanized layer has poor thickness, the galvanized layer is easy to damage, the service life of the pipe is reduced, and the ideal theoretical galvanized amount is 500g/m2However, the existing pipe is difficult to realize 500g/m in the actual galvanizing process due to the problem of the distribution of each element content in the steel of the existing pipe2The amount of zinc plating. Meanwhile, the thickness of a galvanized layer is generally increased by adopting higher galvanizing temperature and longer galvanizing time in the conventional production process, but the actual production finds that the thickness increasing amount of the mode is limited, the defect that the tube is not beneficial to high-thickness galvanizing amount is enlarged by the method in the actual production process, and the thickness of the galvanized layer is reduced by overhigh galvanizing temperature.
Disclosure of Invention
The invention aims to provide a galvanized pipe and a manufacturing method thereof, and the manufacturing method realizes the manufacturing of a high-thickness galvanized steel pipe by reasonably configuring pipe components and using a twice galvanizing process.
The technical purpose of the invention is realized by the following technical scheme: the galvanized pipe comprises a pipe body, wherein the galvanizing amount of a hot galvanizing layer on the pipe body is 500g/m2The pipe body comprises a pipe body containing, by mass%, C: 0.08% -0.12%; si: 0.07 percent to 0.11 percent; mn: 0.5% -1.0%: p is less than 0.025 percent; s is less than 0.020%; ni: 0.02-0.03%; the balance being Fe and unavoidable impurities.
Preferably, in the pipe body, C: 0.10% -0.11%; si: 0.09% -0.10%; ni: 0.02-0.025%.
Preferably, the hot-dip galvanized layer contains 0.2 to 0.35 percent of Al.
Preferably, when the pipe body is galvanized on one side, the thickness of the hot galvanizing layer is 70 μm; when the pipe body is subjected to double-sided galvanizing, the thickness of the hot galvanizing layer is 35 mu m.
A manufacturing method of a galvanized pipe comprises a pretreatment step, an acid washing step, a water washing step, a plating assistant agent soaking step, a preheating step, a hot-dip plating step and a passivation cooling step, and is characterized in that: the hot-dip galvanizing step comprises a primary galvanizing step and a secondary galvanizing step which are sequentially executed, wherein the aluminum content of the zinc liquid used in the primary galvanizing step is greater than that of the zinc liquid used in the secondary galvanizing step.
Preferably, the galvanizing temperature in the primary galvanizing step is 450-460 ℃, and the galvanizing temperature in the secondary galvanizing step is 460-465 ℃.
Preferably, the aluminum content of the zinc liquid used in the primary galvanizing step is 0.2 to 0.25 percent; the aluminum content of the zinc liquid used in the secondary galvanizing step is 0.3-0.35%.
Preferably, the galvanizing time in the primary galvanizing step is 30-35 seconds, and the galvanizing time in the secondary galvanizing step is 8-9 seconds.
Preferably, a re-preheating step is arranged between the primary galvanizing step and the secondary galvanizing step, and a far-infrared preheating furnace is adopted for preheating in the preheating step, wherein the preheating temperature is 150-180 ℃, and the preheating time is 80-150 seconds.
In conclusion, the invention has the following beneficial effects:
the invention has the advantage of high thickness of the zinc coating.
Detailed Description
The hot-dip galvanized coating on the pipe body used in the present invention has a galvanizing content of 500g/m2300g/m compared with the prior art2The amount of zinc plating of (2) is 500g/m defined in this example2The firmness of the zinc coating is higher, and when the pipe body is galvanized on one side, the thickness of the hot-dip galvanized coatingThe degree is 70 μm; when the pipe body is subjected to double-sided galvanizing, the thickness of the hot galvanizing layer is 35 mu m.
The pipe body of this embodiment contains by mass% C: 0.08% -0.12%; si: 0.07 percent to 0.11 percent; mn: 0.5% -1.0%: p is less than 0.025 percent; s is less than 0.020%; ni: 0.02-0.03%; the balance being Fe and unavoidable impurities.
The above-mentioned composition of components will be described below. In the present specification, "%" in the component composition means "% by mass" unless otherwise specified.
C: 0.08% -0.12%; the content of C contributes to an increase in strength of the steel sheet. In order to achieve such high strength, in the present example, the content of C is preferably set to 0.10% to 0.11%.
Si: 0.07 percent to 0.11 percent; when Si is added in a large amount, Si oxide is generated during annealing, and the coating adhesion of the steel sheet after press working is reduced. The preferred Si content of this embodiment is 0.09% to 0.10%. Wherein the limitation of Si to 0.10% or less facilitates the realization of a hot-dip coating temperature of 500g/m at a temperature of 450 ℃ to 465 DEG C2When the content of Si exceeds 0.13%, the thickness of the zinc coating layer may be controlled to be thin when the hot dip galvanizing process is performed at a temperature of 450 to 465 ℃.
Mn: 0.5-1.0%; mn contributes to increasing the strength of the steel sheet by solid solution strengthening. Further, Mn reduces the amount of solid solution C by suppressing diffusion of C and refining cementite, and increases the yield elongation (YP-EL) after accelerated aging. In addition, Mn also has an effect of making S in harmful steel harmless by forming MnS. In order to obtain this effect, the Mn content needs to be set to 0.5% or more. On the other hand, the large amount of Mn content causes a reduction in ductility due to hardening. In addition, the large amount of Mn content causes the formation of Mn oxide during annealing, which inhibits the coating adhesion of the steel sheet after press working. Therefore, the Mn content needs to be 1.0% or less.
P: less than 0.025%; p deteriorates the ductility and toughness of the steel sheet, and therefore, the content of P needs to be 0.050% or less.
S: 0.020% or less; when the content of S is large, toughness of the welded portion deteriorates. Therefore, the upper limit of the S content is set to 0.020%. The preferable S content is 0.007% or less.
Ni: 0.02-0.03%; the limited Ni content of 0.02-0.025% can ensure the fluidity of the zinc liquid relative to the surface of the pipe body in the galvanizing process to improve the uniformity of the galvanized layer
In this embodiment, the hot dip galvanized layer is defined to contain 0.2% to 0.35% of Al. In the present invention, the hot-dip galvanized layer may contain components other than Zn and Al within a range that does not impair the effects of the present invention. Examples of the component other than Zn and Al include Fe, Mg, and Cr. In addition, "%" means "% by mass". When the Al content is less than 0.2%, elution of Fe occurs, and therefore, slag precipitates to deteriorate the appearance, or hard slag is dispersed in the hot-dip galvanized layer. When the slag is dispersed in the hot-dip galvanized layer, the slag comes into contact with the die during press working, thereby deteriorating the workability of the hot-dip galvanized steel sheet. If the Al content exceeds 0.35%, a large amount of Al oxide film is formed on the surface of the galvanized layer, and the spot weldability of the galvanized steel sheet deteriorates.
The embodiment of the method comprises a pretreatment step, an acid washing step, a water washing step, a plating assistant agent dipping step, a preheating step, a hot-dip plating step and a passivation cooling step,
the hot-dip galvanizing step comprises a primary galvanizing step and a secondary galvanizing step which are sequentially executed, wherein the aluminum content of the zinc liquid used in the primary galvanizing step is greater than that of the zinc liquid used in the secondary galvanizing step. The galvanizing temperature in the primary galvanizing step is 450-460 ℃, and the galvanizing temperature in the secondary galvanizing step is 460-465 ℃. The aluminum content of the zinc liquid used in the primary galvanizing step is 0.3 to 0.35 percent; the aluminum content of the zinc liquid used in the secondary galvanizing step is 0.2-0.25%. The galvanizing time in the primary galvanizing step is 30-35 seconds, and the galvanizing time in the secondary galvanizing step is 8-9 seconds. A re-preheating step is arranged between the primary galvanizing step and the secondary galvanizing step, a far infrared type preheating furnace is adopted for preheating in the preheating step, the preheating temperature is 150-180 ℃, and the preheating time is 80-150 seconds.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (9)
1. A galvanized pipe characterized in that: the hot dip galvanizing pipe comprises a pipe body, wherein the galvanizing amount of a hot dip galvanizing layer on the pipe body is 500g per square meter, and the pipe body comprises the following components in percentage by mass: 0.08% -0.12%; si: 0.07 percent to 0.11 percent; mn: 0.5% -1.0%: p is less than 0.025 percent; s is less than 0.020%; ni: 0.02-0.03%; the balance being Fe and unavoidable impurities.
2. The galvanized pipe material according to claim 1, wherein: the pipe body is characterized in that: 0.10% -0.11%; si: 0.09% -0.10%; ni: 0.02-0.025%.
3. The galvanized pipe material according to claim 1, wherein: the hot galvanizing layer contains 0.2 to 0.35 percent of Al.
4. The galvanized pipe material according to claim 1, wherein: when the pipe body is galvanized on one side, the thickness of the hot galvanizing layer is 70 mu m; when the pipe body is subjected to double-sided galvanizing, the thickness of the hot galvanizing layer is 35 mu m.
5. A manufacturing method of a galvanized pipe comprises a pretreatment step, an acid washing step, a water washing step, a plating assistant agent soaking step, a preheating step, a hot-dip plating step and a passivation cooling step, and is characterized in that: the hot-dip galvanizing step comprises a primary galvanizing step and a secondary galvanizing step which are sequentially executed, wherein the aluminum content of the zinc liquid used in the primary galvanizing step is greater than that of the zinc liquid used in the secondary galvanizing step.
6. The galvanized pipe as recited in claim 5, wherein: the galvanizing temperature in the primary galvanizing step is 450-460 ℃, and the galvanizing temperature in the secondary galvanizing step is 460-465 ℃.
7. The galvanized pipe as recited in claim 5, wherein: the aluminum content of the zinc liquid used in the primary galvanizing step is 0.3 to 0.35 percent; the aluminum content of the zinc liquid used in the secondary galvanizing step is 0.2-0.25%.
8. The galvanized pipe as recited in claim 5, wherein: the galvanizing time in the primary galvanizing step is 30-35 seconds, and the galvanizing time in the secondary galvanizing step is 8-9 seconds.
9. The galvanized pipe as recited in claim 5, wherein: a re-preheating step is arranged between the primary galvanizing step and the secondary galvanizing step, a far infrared type preheating furnace is adopted for preheating in the preheating step, the preheating temperature is 150-180 ℃, and the preheating time is 80-150 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911107572.9A CN110964981A (en) | 2019-11-13 | 2019-11-13 | Galvanized pipe and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911107572.9A CN110964981A (en) | 2019-11-13 | 2019-11-13 | Galvanized pipe and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110964981A true CN110964981A (en) | 2020-04-07 |
Family
ID=70030543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911107572.9A Pending CN110964981A (en) | 2019-11-13 | 2019-11-13 | Galvanized pipe and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110964981A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112281079A (en) * | 2020-09-25 | 2021-01-29 | 河钢股份有限公司承德分公司 | Hot-base galvanized steel coil and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106715726A (en) * | 2014-09-08 | 2017-05-24 | 杰富意钢铁株式会社 | Method and apparatus for producing high-strength hot-dipped galvanized steel sheet |
| CN106756562A (en) * | 2017-01-09 | 2017-05-31 | 天津海钢板材有限公司 | A kind of high strength galvanized steel plate and its production technology |
-
2019
- 2019-11-13 CN CN201911107572.9A patent/CN110964981A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106715726A (en) * | 2014-09-08 | 2017-05-24 | 杰富意钢铁株式会社 | Method and apparatus for producing high-strength hot-dipped galvanized steel sheet |
| CN106756562A (en) * | 2017-01-09 | 2017-05-31 | 天津海钢板材有限公司 | A kind of high strength galvanized steel plate and its production technology |
Non-Patent Citations (1)
| Title |
|---|
| 中国电力企业联合会标准化中心: "《供电企业技术标准汇编 第4卷 材料与金具标准》", 31 May 2000, 中国电力出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112281079A (en) * | 2020-09-25 | 2021-01-29 | 河钢股份有限公司承德分公司 | Hot-base galvanized steel coil and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7919194B2 (en) | High strength steel sheet having superior ductility | |
| KR101568543B1 (en) | Galvanized steel sheet having excellent resistance to crack by liquid metal embrittlement | |
| JP5982906B2 (en) | Method for producing high-strength hot-dip galvanized steel sheet | |
| JP5982905B2 (en) | Method for producing high-strength hot-dip galvanized steel sheet | |
| JP5888267B2 (en) | Method for producing high-strength hot-dip galvanized steel sheet and high-strength hot-dip galvanized steel sheet | |
| JP5552863B2 (en) | High-strength hot-dip galvanized steel sheet and manufacturing method thereof | |
| JP5884196B2 (en) | Method for producing high-strength hot-dip galvanized steel sheet | |
| JP5888268B2 (en) | Method for producing high-strength hot-dip galvanized steel sheet and high-strength hot-dip galvanized steel sheet | |
| JP5552862B2 (en) | High-strength hot-dip galvanized steel sheet and manufacturing method thereof | |
| KR20210151035A (en) | Aluminium alloy coated steel sheet, hot formed parts and method of manufacturing thereof | |
| JP5593771B2 (en) | Method for producing high-strength hot-dip galvanized steel sheet | |
| JP5552864B2 (en) | High-strength hot-dip galvanized steel sheet and manufacturing method thereof | |
| JP2010255106A (en) | High-strength hot dip galvanized steel plate and method for producing the same | |
| US20200216927A1 (en) | Hot dipped high manganese steel and manufacturing method therefor | |
| JPH0211745A (en) | Manufacture of steel plate coated with fused alloyed zinc by galuanization excellent in spot weldability | |
| CN110964981A (en) | Galvanized pipe and manufacturing method thereof | |
| WO2015125435A1 (en) | High-strength hot-dip galvanized steel plate and method for producing same | |
| KR101913077B1 (en) | Method of galvannealed heat-treated steel wire | |
| JP2023507960A (en) | High-strength hot-dip galvanized steel sheet with excellent surface quality and electric resistance spot weldability and its manufacturing method | |
| KR100797364B1 (en) | High yield ratio and ultra high strength steel sheet having excellent bendability and the method for manufacturing hot dip galvanized steel sheet using the same | |
| JP5971155B2 (en) | Method for producing high-strength hot-dip galvanized steel sheet and high-strength hot-dip galvanized steel sheet | |
| JP5935720B2 (en) | Method for producing high-strength hot-dip galvanized steel sheet and high-strength hot-dip galvanized steel sheet | |
| KR101149202B1 (en) | Method for manufacturing hot-rolled steel sheet having excellent galvanized coating quality | |
| WO2020203687A1 (en) | Steel sheet and method for producing same | |
| JP5962544B2 (en) | Method for producing high-strength hot-dip galvanized steel sheet and high-strength hot-dip galvanized steel sheet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200407 |