CN108914001A - A kind of high-strength hot-dip zinc-coated steel sheet and its preparation process - Google Patents
A kind of high-strength hot-dip zinc-coated steel sheet and its preparation process Download PDFInfo
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- CN108914001A CN108914001A CN201810823886.8A CN201810823886A CN108914001A CN 108914001 A CN108914001 A CN 108914001A CN 201810823886 A CN201810823886 A CN 201810823886A CN 108914001 A CN108914001 A CN 108914001A
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- 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
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0226—Hot rolling
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- 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
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- 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
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- 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
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
-
- 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
- C23C2/34—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
- C23C2/40—Plates; Strips
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Coating With Molten Metal (AREA)
- Heat Treatment Of Sheet Steel (AREA)
Abstract
The invention discloses a kind of high-strength hot-dip zinc-coated steel sheets, including steel plate ontology and zinc coat, before galvanized steel plain sheet heat stamping and shaping, spray heat-sink shell in galvanized steel sheet surface, the heat-sink shell uniform fold is on the zinc coat；The chemical component of the steel plate ontology is：C：0.04-0.10%, Si：0.20-0.60%, Mn：0.90-1.5%, P：0.010-0.040%, S：≤ 0.015%, Als：0.020-0.080%, Nb：0.030-0.070%, surplus be Fe and inevitable impurity, sheet stock with a thickness of 3.0-3.5mm.The present invention can guarantee that tensile strength and elongation percentage meet user usage requirements, improve the safety of product simultaneously, reduce weight of product itself, meet its requirement developed to lightness direction, energy saving reduces costs, the competitiveness of product is improved simultaneously, there is very strong practicability.
Description
Technical field
The present invention relates to hot-dip galvanizing sheet steel production technical field, specially a kind of high-strength hot-dip zinc-coated steel sheet and its preparation work
Skill.
Background technique
The purposes of hot-dip galvanizing sheet steel is as extensive, is largely used to build, petroleum, chemical industry, household electrical appliances, automobile, hardware
Etc. industries, be generally used for industry and the warehouse of business, workshop, three-dimensional large-scale park, large-scale structural member etc., it is all these to answer
With field, due to fierce market competition and adapt to national green production, energy-saving requirement, various products meet it is practical
Property and while extend physical life, the safety of product, the requirement of lightness must be complied with, exploitation has high-intensitive mechanical property
Can, the galvanized steel strip with good corrosion resistance just seem very urgent.
Summary of the invention
The purpose of the present invention is to provide a kind of high-strength hot-dip zinc-coated steel sheet and its preparation processes, to solve above-mentioned background skill
The problem of being proposed in art.
In order to solve the above technical problem, the present invention provides following technical solutions：A kind of high-strength hot-dip zinc-coated steel sheet, including
Steel plate ontology and zinc coat spray heat-sink shell, the heat-sink shell in galvanized steel sheet surface before galvanized steel plain sheet heat stamping and shaping
Uniform fold is on the zinc coat；
The chemical component of the steel plate ontology is：C：0.04-0.10%, Si：0.20-0.60%, Mn：0.90-1.5%, P：
0.010-0.040%, S：≤ 0.015%, Als：0.020-0.080%, Nb：0.030-0.070%, surplus are Fe and can not keep away
Exempt from impurity, sheet stock with a thickness of 3.0-3.5mm.
Further, the yield strength of hot-dip galvanizing sheet steel be 420-480MPa, tensile strength 490-570MPa, elongation percentage
>=27.0%.
A kind of preparation process of high-strength hot-dip zinc-coated steel sheet, includes the following steps：
Smelting molten steel is rolled through smelting-hot rolling-acid-hot galvanizing-annealing operation after, obtain hot-dip galvanizing sheet steel；The hot rolling includes
Heating, dephosphorization, roughing, finish rolling, section cooling and coiling process.
Further, finish rolling start rolling temperature is 1100-1250 DEG C in the hot rolling, and finishing temperature is 870-950 DEG C.
Further, coiling temperature is 580-650 DEG C in the hot rolling.
Further, it is 50-80% that the acid, which rolls cold rolling reduction ratio in process,.
Further, the annealing operation is specially：440-470 is cooled to from the 800-870 DEG C of speed with 10-50 DEG C/s
DEG C, zinc-plated 7-30s, then room temperature is cooled to eventually with the speed of 5-10 DEG C/s.
Further, protective atmosphere dew-point temperature is -25--60 DEG C in furnace when the hot galvanizing.
Compared with prior art, the beneficial effects obtained by the present invention are as follows being：The present invention is former by gaps such as strict controls C, N
Son increases the content of C, Si, Mn to guarantee that steel is pure, in conjunction with distinctive rolling and continuous annealing hot dip galvanizing process, is prepared into
The hot-dip galvanizing sheet steel excellent to a kind of excellent surface quality, forming property, the yield strength of the steel plate are 420-480MPa, tension
Intensity is 490-570MPa, elongation percentage >=27.0%, can guarantee that tensile strength and elongation percentage meet user usage requirements simultaneously,
The safety for improving product reduces weight of product itself, meets its requirement developed to lightness direction, saves energy
Consumption, reduces costs, while improving the competitiveness of product, has very strong practicability.
Specific embodiment
It is clearly and completely described below in conjunction with the technical solution in the embodiment of the present invention, it is clear that described reality
Applying example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is general
Logical technical staff every other embodiment obtained without making creative work belongs to what the present invention protected
Range.
Embodiment one：
A kind of high-strength hot-dip zinc-coated steel sheet, including steel plate ontology and zinc coat, before galvanized steel plain sheet heat stamping and shaping, zinc-plated
Surface of steel plate sprays heat-sink shell, and the heat-sink shell uniform fold is on the zinc coat；The chemical component of the steel plate ontology is：
By weight percentage, C：0.04%, Si：0.20%, Mn：0.90%, P：0.010%, S：≤ 0.015%, Als：
0.020%, Nb：0.030%, surplus be Fe and inevitable impurity, sheet stock with a thickness of 3.0mm.
The main matching for considering intensity, formability and welding performance of present invention design, if carbon content is lower than 0.04%,
The intensity of steel plate is low, and need to add more other reinforced alloys elements can be only achieved high-intensitive requirement, increases production cost.If high
In 0.08%, then the formability and weldability of steel plate will reduce, while be unfavorable for low-intensity rank Properties Control.Therefore, this hair
The carbon content of bright high-strength hot-dip zinc-coated steel sheet is 0.04%.
Meanwhile in order to improve solid solution strengthening effect, purification recrystallization ferrite promotes perlitic transformation, improves test steel
Ageing resistance energy, hot-dip galvanizing sheet steel of the invention also contains a small amount of silicon and phosphorus, and Si content is Si：0.20%, P content is
0.010%.
In the present embodiment, Mn can improve intensity in steel plate with solution strengthening form, and be combined into MnS with sulphur, can
Fire check caused by prevent because of FeS, but Mn too high levels, will affect the welding performance of steel, therefore, in steel plate of the present invention also
Contain 0.90% manganese.
In the present embodiment, S is controlled as relict element, the present invention≤0.015%, and aluminium adds primarily as deoxidant element
Add, to realize complete deoxidation, content requirement is 0.010% or more, but excessively high aluminium will affect the welding performance and casting of steel
Base Control and Inclusion Removal, therefore, Al content is selected as 0.020%.
In the present embodiment, microalloy Nb is also contained in high-strength hot-dip zinc-coated steel sheet, it can be by improving austenite recrystallization
Temperature, thus effectively small grains, while Nb (C, N) reinforced ferrite matrix is formed in conjunction with C, N element, to realize height
The purpose of intensity.Hot-dip galvanizing sheet steel intensity prepared in accordance with the present invention, the Nb of present invention addition 0.030%.
In conclusion intensity has been prepared in the present invention and forming property is excellent by the accurate control to various composition
Low-cost high-strength hot-dip galvanizing sheet steel, which is 430MPa, tensile strength 510MPa, elongation percentage >=
27.0%.
The present invention also provides a kind of preparation processes of above-mentioned high-strength hot-dip zinc-coated steel sheet, include the following steps：
Smelting molten steel is rolled through smelting-hot rolling-acid-hot galvanizing-annealing operation after, obtain hot-dip galvanizing sheet steel；The hot rolling includes
Heating, dephosphorization, roughing, finish rolling, section cooling and coiling process.
Wherein, in the preparation method of above-mentioned low-cost high-strength hot-dip galvanizing sheet steel, skin is stuck up in hot-rolled process generation in order to prevent
Defect, while guaranteeing the temperature of high temperature coiling, finish rolling start rolling temperature is 1100 DEG C in the hot rolling, and finishing temperature is 870 DEG C.
Wherein, in the preparation method of above-mentioned high-strength hot-dip zinc-coated steel sheet, in order to hot-rolled process obtain suitable ferrite and
Pearlitic structrure, coiling temperature is 570 DEG C in the hot rolling.
Wherein, in the preparation method of above-mentioned low-cost high-strength hot-dip galvanizing sheet steel, the acid rolls cold rolling reduction ratio in process
It is 50%.
Wherein, in the preparation method of above-mentioned low-cost high-strength hot-dip galvanizing sheet steel, the annealing operation is specially：From 800
DEG C 440 DEG C, zinc-plated 7s are cooled to the speed of 10 DEG C/s, then room temperature is cooled to eventually with the speed of 5 DEG C/s.
Wherein, in the preparation method of above-mentioned low-cost high-strength hot-dip galvanizing sheet steel, protective atmosphere dew point temperature in furnace when zinc-plated
Degree is -25 DEG C.
Embodiment two：
A kind of high-strength hot-dip zinc-coated steel sheet, including steel plate ontology and zinc coat, before galvanized steel plain sheet heat stamping and shaping, zinc-plated
Surface of steel plate sprays heat-sink shell, and the heat-sink shell uniform fold is on the zinc coat；The chemical component of the steel plate ontology is：
By weight percentage, C：0.10%, Si：0.60%, Mn：1.5%, P：0.040%, S：≤ 0.015%, Als：0.080%,
Nb：0.070%, surplus be Fe and inevitable impurity, sheet stock with a thickness of 3.5mm.
The main matching for considering intensity, formability and welding performance of present invention design, if carbon content is lower than 0.04%,
The intensity of steel plate is low, and need to add more other reinforced alloys elements can be only achieved high-intensitive requirement, increases production cost.If high
In 0.08%, then the formability and weldability of steel plate will reduce, while be unfavorable for low-intensity rank Properties Control.Therefore, this hair
The carbon content of bright high-strength hot-dip zinc-coated steel sheet is 0.08%.
Meanwhile in order to improve solid solution strengthening effect, purification recrystallization ferrite promotes perlitic transformation, improves test steel
Ageing resistance energy, hot-dip galvanizing sheet steel of the invention also contains a small amount of silicon and phosphorus, and Si content is Si：0.60%, P content is
0.040%.
In the present embodiment, Mn can improve intensity in steel plate with solution strengthening form, and be combined into MnS with sulphur, can
Fire check caused by prevent because of FeS, but Mn too high levels, will affect the welding performance of steel, therefore, in steel plate of the present invention also
Contain 1.5% manganese.
In the present embodiment, S is controlled as relict element, the present invention≤0.015%, and aluminium adds primarily as deoxidant element
Add, to realize complete deoxidation, content requirement is 0.010% or more, but excessively high aluminium will affect the welding performance and casting of steel
Base Control and Inclusion Removal, therefore, Al content is selected as 0.080%.
In the present embodiment, microalloy Nb is also contained in high-strength hot-dip zinc-coated steel sheet, it can be by improving austenite recrystallization
Temperature, thus effectively small grains, while Nb (C, N) reinforced ferrite matrix is formed in conjunction with C, N element, to realize height
The purpose of intensity.Hot-dip galvanizing sheet steel intensity prepared in accordance with the present invention, the Nb of present invention addition 0.070%.
In conclusion intensity has been prepared in the present invention and forming property is excellent by the accurate control to various composition
Low-cost high-strength hot-dip galvanizing sheet steel, which is 480MPa, tensile strength 570MPa, elongation percentage >=
27.0%.
The present invention also provides a kind of preparation processes of above-mentioned high-strength hot-dip zinc-coated steel sheet, include the following steps：
Smelting molten steel is rolled through smelting-hot rolling-acid-hot galvanizing-annealing operation after, obtain hot-dip galvanizing sheet steel；The hot rolling includes
Heating, dephosphorization, roughing, finish rolling, section cooling and coiling process.
Wherein, in the preparation method of above-mentioned low-cost high-strength hot-dip galvanizing sheet steel, skin is stuck up in hot-rolled process generation in order to prevent
Defect, while guaranteeing the temperature of high temperature coiling, finish rolling start rolling temperature is 1250 DEG C in the hot rolling, and finishing temperature is 950 DEG C.
Wherein, in the preparation method of above-mentioned high-strength hot-dip zinc-coated steel sheet, in order to hot-rolled process obtain suitable ferrite and
Pearlitic structrure, coiling temperature is 650 DEG C in the hot rolling.
Wherein, in the preparation method of above-mentioned low-cost high-strength hot-dip galvanizing sheet steel, the acid rolls cold rolling reduction ratio in process
It is 80%.
Wherein, in the preparation method of above-mentioned low-cost high-strength hot-dip galvanizing sheet steel, the annealing operation is specially：From 870
DEG C 470 DEG C, zinc-plated 30s are cooled to the speed of 50 DEG C/s, then room temperature is cooled to eventually with the speed of 10 DEG C/s.
Wherein, in the preparation method of above-mentioned low-cost high-strength hot-dip galvanizing sheet steel, protective atmosphere dew point temperature in furnace when zinc-plated
Degree is -60 DEG C.
As stated above, the present invention increases C, Si, Mn by interstitial atoms such as strict controls C, N to guarantee that steel is pure
It is excellent that a kind of excellent surface quality, forming property is prepared in conjunction with distinctive rolling and continuous annealing hot dip galvanizing process in content
Hot-dip galvanizing sheet steel, the yield strength of the steel plate is 420-480MPa, tensile strength 490-570MPa, elongation percentage >=
27.0%, it can guarantee that tensile strength and elongation percentage meet user usage requirements, improve the safety of product, reduce simultaneously
Weight of product itself meets its requirement developed to lightness direction, and energy saving reduces costs, while improving system
The competitiveness of product has very strong practicability.
Finally it should be noted that：The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (8)
1. a kind of high-strength hot-dip zinc-coated steel sheet, it is characterised in that：Including steel plate ontology and zinc coat, galvanized steel plain sheet drop stamping at
Before type, heat-sink shell is sprayed in galvanized steel sheet surface, the heat-sink shell uniform fold is on the zinc coat；
The chemical component of the steel plate ontology is：C：0.04-0.10%, Si：0.20-0.60%, Mn：0.90-1.5%, P：
0.010-0.040%, S：≤ 0.015%, Als：0.020-0.080%, Nb：0.030-0.070%, surplus are Fe and can not keep away
Exempt from impurity, sheet stock with a thickness of 3.0-3.5mm.
2. a kind of high-strength hot-dip zinc-coated steel sheet according to claim 1, it is characterised in that：The yield strength of hot-dip galvanizing sheet steel
For 420-480MPa, tensile strength 490-570MPa, elongation percentage >=27.0%.
3. a kind of preparation process of high-strength hot-dip zinc-coated steel sheet, it is characterised in that：Include the following steps：
Smelting molten steel is rolled through smelting-hot rolling-acid-hot galvanizing-annealing operation after, obtain hot-dip galvanizing sheet steel；The hot rolling includes
Heating, dephosphorization, roughing, finish rolling, section cooling and coiling process.
4. a kind of preparation process of high-strength hot-dip zinc-coated steel sheet according to claim 3, it is characterised in that：In the hot rolling
Finish rolling start rolling temperature is 1100-1250 DEG C, and finishing temperature is 870-950 DEG C.
5. a kind of preparation process of high-strength hot-dip zinc-coated steel sheet according to claim 3, it is characterised in that：In the hot rolling
Coiling temperature is 580-650 DEG C.
6. a kind of preparation process of high-strength hot-dip zinc-coated steel sheet according to claim 3, it is characterised in that：The acid rolls work
Cold rolling reduction ratio is 50-80% in sequence.
7. a kind of preparation process of high-strength hot-dip zinc-coated steel sheet according to claim 3, it is characterised in that：The lehr attendant
Sequence is specially：It is cooled to 440-470 DEG C, zinc-plated 7-30s from the 800-870 DEG C of speed with 10-50 DEG C/s, then with 5-10 DEG C/s's
Speed is cooled to room temperature eventually.
8. a kind of preparation process of high-strength hot-dip zinc-coated steel sheet according to claim 3, it is characterised in that：The hot galvanizing
When furnace in protective atmosphere dew-point temperature be -25--60 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810823886.8A CN108914001A (en) | 2018-07-25 | 2018-07-25 | A kind of high-strength hot-dip zinc-coated steel sheet and its preparation process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810823886.8A CN108914001A (en) | 2018-07-25 | 2018-07-25 | A kind of high-strength hot-dip zinc-coated steel sheet and its preparation process |
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| CN108914001A true CN108914001A (en) | 2018-11-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115109994A (en) * | 2021-03-22 | 2022-09-27 | 宝山钢铁股份有限公司 | High-strength cold-rolled hot-galvanized microalloy strip steel and manufacturing method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106825177A (en) * | 2017-01-16 | 2017-06-13 | 吴滨 | Galvanized steel plain sheet heat stamping and shaping method and apparatus |
| CN107739979A (en) * | 2017-10-23 | 2018-02-27 | 攀钢集团攀枝花钢铁研究院有限公司 | Low-cost high-strength hot-dip galvanizing sheet steel and preparation method thereof |
-
2018
- 2018-07-25 CN CN201810823886.8A patent/CN108914001A/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106825177A (en) * | 2017-01-16 | 2017-06-13 | 吴滨 | Galvanized steel plain sheet heat stamping and shaping method and apparatus |
| CN107739979A (en) * | 2017-10-23 | 2018-02-27 | 攀钢集团攀枝花钢铁研究院有限公司 | Low-cost high-strength hot-dip galvanizing sheet steel and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115109994A (en) * | 2021-03-22 | 2022-09-27 | 宝山钢铁股份有限公司 | High-strength cold-rolled hot-galvanized microalloy strip steel and manufacturing method thereof |
| CN115109994B (en) * | 2021-03-22 | 2023-09-12 | 宝山钢铁股份有限公司 | High-strength cold-rolled hot-dip galvanized microalloy strip steel and manufacturing method thereof |
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