CN112899562A - Micro-carbon hot-dip galvanized steel strip with stable yield strength control and production method thereof - Google Patents
Micro-carbon hot-dip galvanized steel strip with stable yield strength control and production method thereof Download PDFInfo
- Publication number
- CN112899562A CN112899562A CN202110051734.2A CN202110051734A CN112899562A CN 112899562 A CN112899562 A CN 112899562A CN 202110051734 A CN202110051734 A CN 202110051734A CN 112899562 A CN112899562 A CN 112899562A
- Authority
- CN
- China
- Prior art keywords
- micro
- equal
- dip galvanized
- galvanized steel
- steel strip
- 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
Images
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
- C22C38/02—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
- 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
-
- 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
- C21D8/0236—Cold rolling
-
- 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
- C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
-
- 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
- C23C2/04—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
Abstract
The invention discloses a micro-carbon hot-dip galvanized steel strip with stable yield strength control and a production method thereof, wherein the micro-carbon hot-dip galvanized steel strip comprises the following chemical components in percentage by mass: c: 0.008-0.015%, less than or equal to 0.02% of Si, Mn: 0.10-0.20%, P is less than or equal to 0.015%, S is less than or equal to 0.010%, N is less than or equal to 0.0055%, and the balance of Fe and inevitable impurities. The manufacturing process disclosed by the invention is low in implementation difficulty, excellent in surface quality and comprehensive performance, 9.0-9.5-grade in crystallite microcrystalline granularity, 200-240 MPa in yield strength, 300-350 MPa in tensile strength, and more than or equal to 35% in elongation A80 after fracture. The micro-carbon hot-dip galvanized steel strip has stable yield strength and small fluctuation range, can be well applied to stamping and bending forming of household appliances and automobile products, has no alloy addition, low manufacturing cost and strong competitiveness, and has good market popularization value and social benefit.
Description
Technical Field
The invention belongs to the technical field of metallurgy, and particularly relates to a micro-carbon hot-dip galvanized steel strip with stable yield strength control and a production method thereof.
Background
With the increasing environmental protection requirements and the optimization consideration of enterprise cost, the hot-dip galvanized sheet has gradually replaced the electrogalvanized steel sheet to become the steel material of main choice for household electrical appliances by virtue of the advantages of low production cost, strong corrosion resistance, small environmental pollution and the like. The hot-dip galvanized sheet for household appliances not only requires higher surface quality and control of sheet shape and dimensional accuracy, but also has good stamping processability for parts with complex deformation.
The micro-carbon steel reduces the carbon content of the low-carbon aluminum killed steel into micro-carbon, increases the carbide spacing in the steel, is beneficial to the formation of r- <111>// ND textures, improves the r value and can effectively improve the forming stamping performance of the micro-carbon steel. The micro-carbon hot galvanizing product is mainly used for a bottom plate of an air conditioner outdoor unit, a front housing panel, a valve seat plate, an evaporator support plate and the like. In order to ensure the punching performance, the customer demands low yield strength. In order to meet the requirements of customers, steel mills often use ultra-low carbon IF steel for production, but alloy elements Ti, Nb or Ti + Nb are added into the IF steel, so that the production cost is increased; and the use of low-carbon aluminum killed steel can cause the yield strength to be higher and the performance fluctuation to be too large, so that the risk of product stamping cracking easily exists, and the customer requirements cannot be better met.
CN 105256223A discloses a micro-carbon steel with low yield strength and a production method thereof, wherein the chemical mass percentage is as follows: c: 0.015-0.025%, Si is less than or equal to 0.01%, Mn: 0.10-0.20%, P is less than or equal to 0.010%, S is less than or equal to 0.010%, B: 0.0015 to 0.0030 percent, and the balance of Fe and inevitable impurities; the alloy element B is added to coarsen crystal grains, and simultaneously, high-temperature coiling and high-temperature annealing are adopted to coarsen ferrite crystal grains, so that the micro-carbon steel with the crystal grain size of 8.5 grade, the yield strength of less than 180MPa and the elongation A80 after fracture of more than or equal to 40 percent is obtained. According to the invention, the alloy element B is required to be added, so that the production cost is increased, the price of a finished product is higher, the yield strength is lower, and the rigidity of a formed part is difficult to ensure.
CN 105256224A discloses a cold-rolled micro-carbon steel strip for oil heater and a preparation method thereof, wherein the cold-rolled micro-carbon steel strip comprises the following chemical components in percentage by mass: c: 0.010-0.030%, Si is less than or equal to 0.02%, Mn: 0.10-0.20%, P: 0.005-0.012%, S is less than or equal to 0.004-0.012%, Als: 0.025 to 0.050% and the balance of Fe and inevitable impurities; and (3) obtaining the micro-carbon steel with yield strength of 150-200 MPa, tensile strength of 300-355 MPa and elongation A80 of more than or equal to 37% by high-temperature coiling and high-temperature annealing. The continuous annealing process is a continuous annealing product, and the hot rolling coiling temperature is 730-770 ℃, so that the risk of increasing the scale on the surface of the strip steel exists.
Disclosure of Invention
The invention aims to provide a micro-carbon hot-dip galvanized steel strip with stable yield strength control and a production method thereof, wherein the obtained micro-grain size of the crystal grains of the micro-carbon hot-dip galvanized steel strip is 9.0-9.5 grade, the yield strength is 200-240 MPa, the tensile strength is 300-350 MPa, and the elongation A80 after fracture is more than or equal to 35%.
The technical scheme adopted by the invention for solving the technical problems is as follows: the micro-carbon hot-dip galvanized steel strip with stable yield strength control comprises the following components in percentage by mass: c: 0.008-0.015%, less than or equal to 0.02% of Si, Mn: 0.10-0.20%, P is less than or equal to 0.015%, S is less than or equal to 0.010%, N is less than or equal to 0.0055%, and the balance of Fe and inevitable impurities.
The production method of the micro-carbon hot-dip galvanized steel strip with stable yield strength control is characterized by comprising the following steps of:
1) pretreating molten iron, smelting by a top-bottom combined blown converter, carrying out RH refining to obtain micro-carbon molten steel, and carrying out continuous casting to obtain a plate blank, wherein the thickness of the plate blank is 230mm, and the width of the plate blank is 1000-1660 mm;
2) carrying out red conveying and reheating on the plate blank, then carrying out high-pressure water descaling, width fixing, rough rolling and finish rolling, and then adopting front-section laminar cooling and U-shaped coiling processes to obtain a hot-rolled coil with the thickness of 2.3-5.5 mm and the width of 1000-1564 mm;
3) the hot rolled coil is subjected to shallow slot turbulent pickling and rolling by a five-rack six-roller cold continuous rolling mill with a rolling reduction rate of 54.5-88.0% to obtain a chilled coil with the thickness of 0.4-2.0 mm and the width of 1000-1562 mm;
4) and annealing the cold hard coil by a vertical full-radiation annealing furnace, galvanizing the cold hard coil in a molten channel type induction heating ceramic zinc pot, and finishing by a four-roller wet finishing machine to obtain the micro-carbon hot-dip galvanized steel strip with stable yield strength control.
Further, in the step 2, the temperature of the soaking section of the slab heating furnace is 1190-1270 ℃, the heating time is 138-260 min, and the finish rolling outlet temperature is 900-930 ℃. Coiling temperature: when the thickness is more than or equal to 1.8 to less than or equal to 4.0mm, the head and the tail of the strip steel are 40 m: 730 +/-15 ℃, middle part of the strip steel: 700 +/-15 ℃; when the thickness is more than 4.0 to less than or equal to 6.0mm, the head and the tail of the strip steel are 40 m: 710 +/-15 ℃, and the middle part of the strip steel: 680 +/-15 ℃.
Further, in the step 4, the annealing soaking temperature is 790-810 ℃, the annealing slow cooling temperature is 680-700 ℃, the zinc liquid temperature is 452-458 ℃, and the finishing elongation is 0.9-1.4%.
Further, the thickness of the micro-carbon hot-dip galvanized steel strip produced in the step 4 is 0.4-2.0 mm, and the width of the micro-carbon hot-dip galvanized steel strip is 1000-1533 mm.
Furthermore, the micro-grain size of the micro-carbon hot-dip galvanized steel strip crystal grains is 9.0-9.5 grade, the yield strength is 200-240 MPa, the tensile strength is 300-350 MPa, and the elongation A80 after fracture is more than or equal to 35%.
The invention has the following beneficial effects: the micro-carbon hot-dip galvanized steel strip with the yield strength controlled stably and the production method thereof have the advantages that the manufacturing process implementation difficulty is small, the surface quality and the comprehensive performance are excellent, the micro-grain size of crystal grains is 9.0-9.5 grade, the yield strength is 200-240 MPa, the tensile strength is 300-350 MPa, and the elongation A80 after fracture is more than or equal to 35%. The micro-carbon hot-dip galvanized steel strip has stable yield strength and small fluctuation range, can be well applied to stamping and bending forming of household appliances and automobile products, has no alloy addition, low manufacturing cost and strong competitiveness, and has good market popularization value and social benefit.
Drawings
Fig. 1 is a schematic microstructure diagram of a microcarbon hot-dip galvanized steel strip according to an embodiment of the present invention.
Detailed Description
The following are specific examples of the present invention and further describe the technical solutions of the present invention, but the scope of the present invention is not limited to these examples. All changes, modifications and equivalents that do not depart from the spirit of the invention are intended to be included within the scope thereof.
Example 1
Pretreating molten iron, smelting by a top-bottom combined blown converter, carrying out RH refining to obtain micro-carbon molten steel, and carrying out continuous casting to obtain a plate blank, wherein the plate blank has the thickness of 230mm and the width of 1140mm, and the chemical components are C: 0.011%, Si not more than 0.001%, Mn: 0.15 percent, less than or equal to 0.004 percent of P, less than or equal to 0.006 percent of S, less than or equal to 0.0014 percent of N, and the balance of Fe and inevitable impurities. And (3) red-conveying the plate blank, heating for 189min to 1208 ℃, descaling by high-pressure water, widening, rough rolling, finish rolling, and finishing rolling at an outlet temperature of 920 ℃, and then adopting front-section laminar cooling and U-shaped coiling processes, wherein the coiling temperature of 40m at the head and the tail of the strip steel is 728 ℃, and the coiling temperature of the middle part of the strip steel is 698 ℃, so that a hot-rolled coil with the thickness of 2.3mm and the width of 1029mm is obtained. And (3) rolling the hot rolled coil by a five-stand six-roller cold continuous rolling mill with shallow slot turbulent pickling and 82.6% rolling reduction rate to obtain a cold hard coil with the thickness of 0.378mm and the width of 1027 mm. And (3) annealing the cold hard coil by a vertical full-radiation annealing furnace, wherein the annealing soaking temperature is 795 ℃, the annealing slow cooling temperature is 690 ℃, a molten channel type induction heating ceramic zinc pot is galvanized, the galvanizing temperature is 453 ℃, the four-roller wet finishing machine is used for finishing, the finishing elongation is 0.9%, and finally the micro-carbon hot galvanized steel strip with the thickness of 0.4mm and the width of 1000mm is obtained.
Example 2
Pretreating molten iron, smelting by a top-bottom combined blown converter, carrying out RH refining to obtain micro-carbon molten steel, and carrying out continuous casting to obtain a plate blank, wherein the plate blank has the thickness of 230mm and the width of 1660mm, and the chemical composition is C: 0.014%, Si not more than 0.003%, Mn: 0.18 percent, less than or equal to 0.013 percent of P, less than or equal to 0.007 percent of S, less than or equal to 0.0028 percent of N, and the balance of Fe and inevitable impurities. And (3) red-conveying the plate blank, heating the plate blank again for 223min to 1201 ℃, descaling by high-pressure water, fixing the width, rough rolling, finish rolling, and finishing rolling at the outlet temperature of 900 ℃, and then adopting front-section laminar cooling and U-shaped coiling processes, wherein the coiling temperature of the head and the tail of the strip steel is 715 ℃, and the coiling temperature of the middle part of the strip steel is 685 ℃, so that a hot-rolled coil with the thickness of 4.5mm and the width of 1564mm is obtained. The hot rolled coil is subjected to shallow slot turbulent pickling and a five-stand six-roller cold continuous rolling mill with 77.8 percent of rolling reduction rate to obtain a cold hard coil with the thickness of 0.968mm and the width of 1562 mm. And (3) annealing the cold-hard coil by a vertical full-radiation annealing furnace, wherein the annealing soaking temperature is 795 ℃, the annealing slow-cooling temperature is 685 ℃, a molten channel type induction heating ceramic zinc pot is galvanized, the galvanizing temperature is 455 ℃, the four-roller wet finishing machine is used for finishing treatment, the finishing elongation is 1.1 percent, and finally the micro-carbon hot-galvanized steel strip with the thickness of 1.0mm and the width of 1533mm is obtained.
Example 3
Pretreating molten iron, smelting by a top-bottom combined blown converter, carrying out RH refining to obtain micro-carbon molten steel, and carrying out continuous casting to obtain a plate blank, wherein the plate blank has the thickness of 230mm and the width of 1660mm, and the chemical composition is C: 0.008%, Si less than or equal to 0.003%, Mn: 0.16 percent, less than or equal to 0.014 percent of P, less than or equal to 0.006 percent of S, less than or equal to 0.0038 percent of N, and the balance of Fe and inevitable impurities. And (3) red-conveying the plate blank, heating the plate blank again for 253min to 1223 ℃, descaling by high-pressure water, sizing, rough rolling, finish rolling, and finishing rolling at an outlet temperature of 913 ℃, then adopting front-section laminar cooling and U-shaped coiling processes, wherein the coiling temperature of the head and the tail of the strip steel is 720 ℃, and the coiling temperature of the middle part of the strip steel is 690 ℃, so that a hot-rolled coil with the thickness of 5.5mm and the width of 1281mm is obtained. And (3) rolling the hot-rolled coil by using a five-stand six-roller cold continuous rolling mill with shallow slot turbulent pickling and 63.6% rolling reduction rate to obtain a cold-hard coil with the thickness of 1.99mm and the width of 1279 mm. And (3) annealing the cold-hard coil by a vertical full-radiation annealing furnace, wherein the annealing soaking temperature is 809 ℃, the annealing slow cooling temperature is 695 ℃, a molten channel type induction heating ceramic zinc pot is galvanized, the galvanizing temperature is 457 ℃, the four-roller wet finishing machine is used for finishing, the finishing elongation is 1.4%, and finally the micro-carbon hot-galvanized steel strip with the thickness of 2.0mm and the width of 1250mm is obtained.
Test results
The micro-carbon hot-dip galvanized steel strip obtained by the method is detected according to a metal material tensile test method GB/T228.1, and the specific results are shown in Table 1.
TABLE 1
The present invention is not limited to the above embodiments, and any structural changes made under the teaching of the present invention shall fall within the scope of the present invention, which is similar or similar to the technical solutions of the present invention.
The techniques, shapes, and configurations not described in detail in the present invention are all known techniques.
Claims (6)
1. The micro-carbon hot-dip galvanized steel strip with stable yield strength control is characterized by comprising the following components in percentage by mass: c: 0.008-0.015%, less than or equal to 0.02% of Si, Mn: 0.10-0.20%, P is less than or equal to 0.015%, S is less than or equal to 0.010%, N is less than or equal to 0.0055%, and the balance of Fe and inevitable impurities.
2. The method for producing the microcarbon hot-dip galvanized steel strip with stable yield strength control is characterized by comprising the following steps of:
1) pretreating molten iron, smelting by a top-bottom combined blown converter, carrying out RH refining to obtain micro-carbon molten steel, and carrying out continuous casting to obtain a plate blank, wherein the thickness of the plate blank is 230mm, and the width of the plate blank is 1000-1660 mm;
2) carrying out red conveying and reheating on the plate blank, then carrying out high-pressure water descaling, width fixing, rough rolling and finish rolling, and then adopting front-section laminar cooling and U-shaped coiling processes to obtain a hot-rolled coil with the thickness of 2.3-5.5 mm and the width of 1000-1564 mm;
3) the hot rolled coil is subjected to shallow slot turbulent pickling and rolling by a five-rack six-roller cold continuous rolling mill with a rolling reduction rate of 54.5-88.0% to obtain a chilled coil with the thickness of 0.4-2.0 mm and the width of 1000-1562 mm;
4) and annealing the cold hard coil by a vertical full-radiation annealing furnace, galvanizing the cold hard coil in a molten channel type induction heating ceramic zinc pot, and finishing by a four-roller wet finishing machine to obtain the micro-carbon hot-dip galvanized steel strip with stable yield strength control.
3. The method for producing the micro-carbon hot-dip galvanized steel strip with the yield strength controlled stably according to claim 2, wherein the temperature of a soaking section of a slab heating furnace in the step 2 is 1190-1270 ℃, the heating time is 138-260 min, and the finish rolling outlet temperature is 900-930 ℃. Coiling temperature: when the thickness is more than or equal to 1.8 to less than or equal to 4.0mm, the head and the tail of the strip steel are 40 m: 730 +/-15 ℃, middle part of the strip steel: 700 +/-15 ℃; when the thickness is more than 4.0 to less than or equal to 6.0mm, the head and the tail of the strip steel are 40 m: 710 +/-15 ℃, and the middle part of the strip steel: 680 +/-15 ℃.
4. The method for producing the micro-carbon hot-dip galvanized steel strip with the stable yield strength control according to claim 2, wherein the annealing soaking temperature in the step 4 is 790-810 ℃, the annealing slow cooling temperature is 680-700 ℃, the zinc liquid temperature is 452-458 ℃, and the finishing elongation is 0.9-1.4%.
5. The method for producing the micro-carbon hot-dip galvanized steel strip with stable yield strength control according to claim 2, wherein the thickness of the micro-carbon hot-dip galvanized steel strip produced after the step 4 is 0.4-2.0 mm, and the width of the micro-carbon hot-dip galvanized steel strip is 1000-1533 mm.
6. The method for producing the micro-carbon hot-dip galvanized steel strip with the yield strength controlled stably according to claim 2, wherein the micro-grain size of the crystal grains of the micro-carbon hot-dip galvanized steel strip is 9.0-9.5 grade, the yield strength is 200-240 MPa, the tensile strength is 300-350 MPa, and the elongation A80 after fracture is more than or equal to 35%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110051734.2A CN112899562A (en) | 2021-01-15 | 2021-01-15 | Micro-carbon hot-dip galvanized steel strip with stable yield strength control and production method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110051734.2A CN112899562A (en) | 2021-01-15 | 2021-01-15 | Micro-carbon hot-dip galvanized steel strip with stable yield strength control and production method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112899562A true CN112899562A (en) | 2021-06-04 |
Family
ID=76113357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110051734.2A Pending CN112899562A (en) | 2021-01-15 | 2021-01-15 | Micro-carbon hot-dip galvanized steel strip with stable yield strength control and production method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112899562A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114934248A (en) * | 2022-03-30 | 2022-08-23 | 日照宝华新材料有限公司 | Production method of hot-base galvanized plate for refrigerator slide rail |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102676913A (en) * | 2011-03-08 | 2012-09-19 | 上海梅山钢铁股份有限公司 | Cold-rolled steel strip for flux-cored wire and production method of cold-rolled steel strip |
| CN102758132A (en) * | 2012-06-19 | 2012-10-31 | 河北钢铁股份有限公司邯郸分公司 | Method for manufacturing deep-drawing steel with high r value through continuous annealing of micro-carbon aluminum killed steel |
| CN102758129A (en) * | 2012-06-19 | 2012-10-31 | 河北钢铁股份有限公司邯郸分公司 | Method for manufacturing non-spangle galvanized sheet DX54D+Z from aluminum killed steel |
| CN102758128A (en) * | 2012-06-19 | 2012-10-31 | 河北钢铁股份有限公司邯郸分公司 | Method for producing deep-draw hot-rolled strip steel by micro carbon aluminium killed steel |
| CN103103436A (en) * | 2013-01-23 | 2013-05-15 | 新余钢铁集团有限公司 | DD750 cold-rolled low-carbon steel strip for electricians, and manufacturing method thereof |
| CN104946971A (en) * | 2015-06-29 | 2015-09-30 | 唐山钢铁集团有限责任公司 | Preparation method for high-performance stamping cold-rolled and galvanized steel strip |
| CN105256224A (en) * | 2015-11-11 | 2016-01-20 | 攀钢集团攀枝花钢铁研究院有限公司 | Cold-rolled micro carbon steel strip for oil heater and preparation method of steel strip |
| CN106119494A (en) * | 2016-08-17 | 2016-11-16 | 马钢(集团)控股有限公司 | Yield strength >=250MPa level hot-dip galvanizing sheet steel and manufacture method thereof |
| CN107190205A (en) * | 2017-06-29 | 2017-09-22 | 唐山钢铁集团有限责任公司 | A kind of grain coarsening, the cold-rolling galvanization steel band of high-elongation and its production method |
| CN108774715A (en) * | 2018-06-28 | 2018-11-09 | 攀钢集团攀枝花钢铁研究院有限公司 | Hot-dip galvanizing sheet steel and its manufacturing method |
| CN110551939A (en) * | 2018-06-04 | 2019-12-10 | 上海梅山钢铁股份有限公司 | Hot-dip galvanized steel plate with yield strength of 320MPa and production method thereof |
| CN111041327A (en) * | 2019-12-25 | 2020-04-21 | 山东钢铁集团日照有限公司 | Production method of cold-rolled steel strip with yield strength below 210MPa |
| CN111218617A (en) * | 2020-02-24 | 2020-06-02 | 包头钢铁（集团）有限责任公司 | Cold-rolled low-carbon steel strip SPCC with low yield strength and no yield platform and production method thereof |
-
2021
- 2021-01-15 CN CN202110051734.2A patent/CN112899562A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102676913A (en) * | 2011-03-08 | 2012-09-19 | 上海梅山钢铁股份有限公司 | Cold-rolled steel strip for flux-cored wire and production method of cold-rolled steel strip |
| CN102758132A (en) * | 2012-06-19 | 2012-10-31 | 河北钢铁股份有限公司邯郸分公司 | Method for manufacturing deep-drawing steel with high r value through continuous annealing of micro-carbon aluminum killed steel |
| CN102758129A (en) * | 2012-06-19 | 2012-10-31 | 河北钢铁股份有限公司邯郸分公司 | Method for manufacturing non-spangle galvanized sheet DX54D+Z from aluminum killed steel |
| CN102758128A (en) * | 2012-06-19 | 2012-10-31 | 河北钢铁股份有限公司邯郸分公司 | Method for producing deep-draw hot-rolled strip steel by micro carbon aluminium killed steel |
| CN103103436A (en) * | 2013-01-23 | 2013-05-15 | 新余钢铁集团有限公司 | DD750 cold-rolled low-carbon steel strip for electricians, and manufacturing method thereof |
| CN104946971A (en) * | 2015-06-29 | 2015-09-30 | 唐山钢铁集团有限责任公司 | Preparation method for high-performance stamping cold-rolled and galvanized steel strip |
| CN105256224A (en) * | 2015-11-11 | 2016-01-20 | 攀钢集团攀枝花钢铁研究院有限公司 | Cold-rolled micro carbon steel strip for oil heater and preparation method of steel strip |
| CN106119494A (en) * | 2016-08-17 | 2016-11-16 | 马钢(集团)控股有限公司 | Yield strength >=250MPa level hot-dip galvanizing sheet steel and manufacture method thereof |
| CN107190205A (en) * | 2017-06-29 | 2017-09-22 | 唐山钢铁集团有限责任公司 | A kind of grain coarsening, the cold-rolling galvanization steel band of high-elongation and its production method |
| CN110551939A (en) * | 2018-06-04 | 2019-12-10 | 上海梅山钢铁股份有限公司 | Hot-dip galvanized steel plate with yield strength of 320MPa and production method thereof |
| CN108774715A (en) * | 2018-06-28 | 2018-11-09 | 攀钢集团攀枝花钢铁研究院有限公司 | Hot-dip galvanizing sheet steel and its manufacturing method |
| CN111041327A (en) * | 2019-12-25 | 2020-04-21 | 山东钢铁集团日照有限公司 | Production method of cold-rolled steel strip with yield strength below 210MPa |
| CN111218617A (en) * | 2020-02-24 | 2020-06-02 | 包头钢铁（集团）有限责任公司 | Cold-rolled low-carbon steel strip SPCC with low yield strength and no yield platform and production method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114934248A (en) * | 2022-03-30 | 2022-08-23 | 日照宝华新材料有限公司 | Production method of hot-base galvanized plate for refrigerator slide rail |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101649418B (en) | Ferrite stainless steel cold-rolled steel band and manufacturing method thereof | |
| CN102605250B (en) | Vehicle steel plate and production method thereof | |
| CN108866428B (en) | Hot-dip aluminum-zinc steel plate with yield strength of 550MPa and manufacturing method thereof | |
| CN111020437B (en) | Manufacturing method of hot-dip galvanized steel strip with yield strength of above 580Mpa grade | |
| CN103510011B (en) | A kind of enamel inner container High Strength Steel Plate and manufacture method thereof | |
| CN104928457A (en) | Method for producing high-ductility ferritic stainless steel band through furnace roll and continuous mill | |
| CN101914725A (en) | Low-carbon ultra-deep punching cold-rolling steel sheet and production method thereof | |
| CN110863137B (en) | Method for manufacturing hot-dip aluminum-zinc steel plate | |
| CN108004464B (en) | Hot-dip galvanized steel plate for large-size liquid crystal display back plate and manufacturing method thereof | |
| CN103276299A (en) | High-surface quality ferrite stainless steel plate and manufacturing method thereof | |
| CN112430787B (en) | Low-yield-ratio high-strength cold-rolled hot-dip galvanized steel plate and manufacturing method thereof | |
| CN107287513B (en) | A kind of tin plate and preparation method thereof | |
| CN112359285B (en) | Ageing-resistant cold-rolled continuously annealed steel strip and manufacturing method thereof | |
| CN105349884A (en) | Ti-contained hot-rolled and acid-pickled enameled steel strip and production method thereof | |
| CN112893459A (en) | Plate shape control method for cold rolling limit wide thin deep drawing steel | |
| CN114438413A (en) | Hot-dip galvanized high-strength structural steel with yield strength of 340MPa and production method thereof | |
| CN103469065B (en) | The production method of 340MPa level HSLA vehicle structural steel | |
| CN111690871B (en) | Hot-rolled steel plate for cold-rolled electro-galvanized steel plate and manufacturing method | |
| CN112899562A (en) | Micro-carbon hot-dip galvanized steel strip with stable yield strength control and production method thereof | |
| CN104946971A (en) | Preparation method for high-performance stamping cold-rolled and galvanized steel strip | |
| CN108914014B (en) | Cold-rolled high-strength hot-dip galvanized steel plate and preparation method thereof | |
| CN104060070A (en) | Cold-rolled steel plate and preparation method thereof | |
| CN113667892B (en) | Economical low-temperature continuous annealing cold-rolled high-strength steel strip and production method thereof | |
| CN113122691B (en) | Low-delta r-value micro-carbon steel hot-dip galvanized steel plate and preparation method thereof | |
| CN104451377A (en) | Low-carbon aluminum killed steel hot-dip galvanized sheet and production method thereof |
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 |
Application publication date: 20210604 |
|
| RJ01 | Rejection of invention patent application after publication |