CN114082782A - Anti-wrinkling cold rolling method for 443 ultra-pure ferrite stainless steel - Google Patents
Anti-wrinkling cold rolling method for 443 ultra-pure ferrite stainless steel Download PDFInfo
- Publication number
- CN114082782A CN114082782A CN202111409923.9A CN202111409923A CN114082782A CN 114082782 A CN114082782 A CN 114082782A CN 202111409923 A CN202111409923 A CN 202111409923A CN 114082782 A CN114082782 A CN 114082782A
- Authority
- CN
- China
- Prior art keywords
- rolling
- percent
- cold
- equal
- less
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
- B21B1/24—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
- B21B1/28—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process by cold-rolling, e.g. Steckel cold mill
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/001—Continuous casting of metals, i.e. casting in indefinite lengths of specific alloys
- B22D11/002—Stainless steels
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C1/00—Refining of pig-iron; Cast iron
- C21C1/02—Dephosphorising or desulfurising
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/064—Dephosphorising; Desulfurising
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/068—Decarburising
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Sheet Steel (AREA)
Abstract
The invention provides a wrinkling-preventing cold rolling method for 443 ultra-pure ferritic stainless steel, which comprises the steps of molding molten iron into a plate blank, then rolling the plate blank into an NO1 plate, carrying out acid pickling and annealing, rolling the NO1 plate into a cold-rolled hard steel coil by adopting a low reduction rate and fewer passes, and finally slitting and packaging. Compared with the traditional 443 stainless steel rolling method, the rolling reduction rate is low, the total deformation is small, the plate surface wrinkling phenomenon is effectively reduced, and meanwhile, the production efficiency is effectively improved due to the low rolling reduction rate and few passes.
Description
Technical Field
The invention belongs to the technical field of steel rolling, and relates to 443 ultra-pure ferrite stainless steel and a cold rolling method thereof.
Background
443 stainless steel is a new-generation ferritic stainless steel developed in recent years, and because no nickel is contained, the production cost is greatly reduced compared with 300 series stainless steel, and the corrosion resistance and the processability are improved by adding elements such as chromium, carbon, nitrogen and the like, and simultaneously adding elements such as niobium, titanium and copper. 443 ferritic stainless steel has excellent corrosion resistance similar to austenitic stainless steel, especially good chloride ion corrosion resistance, is considered as a substitute product of 304 austenitic stainless steel, and is widely applied to the fields of elevators, architectural decoration, kitchenware and the like.
443 as a decorative material, and in the post-processing of the product, an oil milling and wire drawing process is required to form a good wire drawing surface. However, after grinding, white bar defects distributed in the rolling direction are liable to occur. Through analysis, the grinding white strip defect is mainly caused by the fact that the rolling process is improper, and wrinkling stripes appear on the surface of the strip material in the rolling process.
In combination with literature data, the conventional solutions are: because the molten steel forms strong {001} <100> columnar crystals in the continuous casting stage due to the temperature gradient, the {001} <100> columnar crystals are easy to evolve into {001} <110>, {112} <110> two textures which are unfavorable for the anti-wrinkling performance of the material in the rolling process, and due to the plastic flow anisotropy of the textures, the larger the rolling reduction rate is, the more obvious the difference performance of the plastic flow anisotropy is.
Further increasing the rolling reduction rate of cold rolling, breaking the inherited columnar crystal structure of a casting blank, refining the grain size, simultaneously increasing the nucleation position of recrystallization, increasing deformation energy storage, providing energy for subsequent recrystallization, promoting the subsequent recrystallization, finally refining and homogenizing the grains in a cold rolling annealing state, and reducing the surface wrinkling defect caused by rolling, but the technical idea cannot solve the technical problem of 443 ultra-pure ferritic stainless steel cold rolling wrinkling.
Relevant studies on ferritic stainless steels show that: when the cold rolling reduction rate is controlled to be between 80% and 85%, the ferritic stainless steel product has excellent performance, at present, 443 stainless steel is limited by the rolling load and the production rhythm of a twenty-high rolling mill, only the 443 ultra-pure ferritic stainless steel cold rolling reduction rate is increased to 75%, and cannot be further increased subsequently, so that the grinding white strip defect of the 443 ultra-pure ferritic stainless steel product cannot be reduced and eliminated during subsequent grinding treatment. In severe cases, such white bar defects caused by rolling wrinkles are difficult to remove by oil milling and wire drawing, resulting in the product becoming a waste product. If a good polishing surface is to be obtained, the number of polishing passes is increased, which results in a significant increase in polishing cost and a decrease in polishing efficiency. In order to further reduce the grinding cost and improve the grinding efficiency, the research and development of a low-rolling wrinkling 443 ultra-pure ferritic stainless steel cold rolling production method is important for solving the problem of grinding white strips.
Disclosure of Invention
The invention aims to provide a 443 ultra-pure ferritic stainless steel cold rolling method with a smooth and flat surface, aiming at the problem that the surface of a strip material in the prior art is wrinkled and striped.
Therefore, the invention provides the following technical scheme:
a443 ultra-pure ferritic stainless steel anti-wrinkling cold rolling method comprises the following steps:
(1) the method comprises the following steps of (1) pretreating molten iron, namely decarbonizing and desulfurizing the molten iron;
(2) continuously casting molten iron, namely continuously casting the pretreated molten iron into a plate blank, and then placing the plate blank into a heat preservation pit for slow cooling;
(3) slab grinding, namely carrying out hot grinding on the surface of the slab;
(4) heating the plate blank, namely heating the cast plate blank to 1150-1200 ℃, and preserving heat for 20-60 min;
(5) rolling the plate blank, namely rolling the heated plate blank into a hot-rolled black coil;
(6) annealing and pickling the hot-rolled black coil, and annealing and pickling the hot-rolled black coil at 950-1000 ℃ to form an NO1 plate;
(7) rolling the NO1 plate, namely rolling the NO1 plate into a cold-rolled hard steel coil by adopting a twenty-high rolling mill;
(8) annealing and pickling the cold-rolled hard steel coil, and placing the cold-rolled hard steel coil into a cold annealing and pickling line for continuous annealing and pickling;
(9) and (3) leveling cold-rolled hard steel, leveling the annealed and pickled cold-rolled hard steel coil, shearing, splitting and finally packaging.
Further, in the step (1), the molten iron is subjected to smelting treatment by sequentially passing through an AOD converter, a VOD vacuum smelting furnace and an LF refining furnace.
Further, the slab in the step (2) comprises the following chemical components in percentage by mass: w (C) is less than or equal to 0.025 percent, w (Si) is less than or equal to 1.00 percent, w (Mn) is less than or equal to 1.00 percent, w (S) is less than or equal to 0.030 percent, w (P) is less than or equal to 0.030 percent, 20.50 percent w (Cr) is less than or equal to 23.00 percent, 0.30 percent w (Cu) is less than or equal to 0.80 percent, w (N) is less than or equal to 0.025 percent, w (C + N) is less than or equal to 0.1 percent, w (Ti + Nb) is less than or equal to 0.8 percent, and the balance of iron and inevitable impurities.
Further, the plate blank heated in the step (5) is firstly subjected to rough rolling by a rough rolling mill for 5 times, the total rolling reduction rate is 86.4%, then the plate blank is subjected to finish rolling by a steckel mill for 5-7 times, the total rolling reduction rate is 80% -89%, and finally the plate blank is coiled into a hot-rolled black coil.
Further, the NO1 sheet produced in the above (6) has a thickness of 3.3 to 6.0 mm.
Further, the total rolling reduction in the step (7) is 60-65%, and the number of rolling passes is 6.
The invention has the beneficial effects that:
(1) the rolling reduction rate of cold rolling is reduced, the total deformation is reduced, the technical idea of solving the rolling wrinkling problem by improving the incoming material thickness of a NO.1 plate, improving the cold rolling reduction rate, breaking the inherited columnar crystals of a casting blank and refining the grain size in the conventional method is overcome, the rolling wrinkling defect of 443 ultra-pure ferrite stainless steel is eliminated and improved, the grinding cost of subsequent products is reduced, and the grinding efficiency is improved.
(2) By reducing the total rolling reduction rate and the rolling pass of the cold rolling, the defect of rolling wrinkling is overcome, the production efficiency of the rolling mill is improved, the rolling capacity of the twenty-high roll mill is greatly improved, and the production energy consumption cost of the twenty-high roll mill is reduced.
Drawings
Fig. 1 is a surface view of a cold-rolled hard steel coil in example 1;
fig. 2 is a surface view of a cold-rolled hard steel coil in example 2.
Detailed Description
The present invention will be described in detail with reference to the following examples:
example 1
(1) The method comprises the following steps of pretreating molten iron, decarburizing and desulfurizing the molten iron by adopting a conventional ultrapure ferrite stainless steel smelting means to control the internal components of a plate blank, specifically, conducting decarburization treatment on the molten iron sequentially through an AOD converter and a VOD vacuum smelting furnace, effectively reducing the carbon content in the molten iron through two times of decarburization, and finally placing the decarburized molten iron into an LF refining furnace for desulfurization to complete pretreatment.
(2) Casting a slab, continuously casting the pretreated molten iron to form a ferritic stainless steel slab (the slab size is 220mm 1270mm 11000 mm), placing the slab into a heat-preservation pit for heat preservation and slow cooling, wherein the slab comprises the following internal components: w (C) is less than or equal to 0.025 percent, w (Si) is less than or equal to 1.00 percent, w (Mn) is less than or equal to 1.00 percent, w (S) is less than or equal to 0.030 percent, w (P) is less than or equal to 0.030 percent, 20.50 percent w (Cr) is less than or equal to 23.00 percent, 0.30 percent w (Cu) is less than or equal to 0.80 percent, w (N) is less than or equal to 0.025 percent, w (C + N) is less than or equal to 0.1 percent, w (Ti + Nb) is less than or equal to 0.8 percent, and the balance of iron and inevitable impurities.
(2) And (3) slab polishing, namely performing hot polishing on the surface of the slab to improve the surface quality of the slab so as to facilitate subsequent rolling.
(3) And (3) heating the plate blank, heating the ground plate blank to 1150-1200 ℃, and preserving heat for 20-60min so as to facilitate subsequent rolling.
(4) And (2) slab rolling, namely firstly carrying out rough rolling on the heated slab by using a rough rolling mill, specifically, carrying out 5-pass rolling on the rough rolling with a total reduction rate of 86.4%, then carrying out finish rolling by using a steckel mill, wherein the finish rolling adopts 5-7-pass rolling with a total reduction rate of 80% -89%, and coiling the finish rolled steel strip into a hot rolling black coil.
(5) And annealing and pickling the hot-rolled black coil, annealing and pickling the hot-rolled black coil at 950-1000 ℃ to form an NO1 plate with the thickness of 3.500mm, wherein compared with the prior art, the NO1 plate is thinner, so that the subsequent rolling adopts a smaller reduction rate and reduces the number of passes.
(6) Rolling NO1 plates, rolling NO.1 plates by adopting a twenty-high rolling mill to form a cold-rolled hard steel coil, wherein the total rolling reduction rate is 65.763%, the rolling pass is 6 times, finally, the hard steel coil with the thickness of 1.198mm is rolled, and the reduction rate and the plate thickness of each pass are shown in table 1:
TABLE 1
The total reduction rate of the conventional rolling mode is 74.780%, the number of passes is 8, compared with the conventional mode, the rolling time can be reduced, the production efficiency is improved, in addition, the average reduction rate of each pass is 10.961% as can be seen from table 1, the average reduction rate of each pass of the conventional rolling mode is 9.348%, compared with the average reduction rate of each pass of the conventional mode, the reduction rate of each pass is improved, and the surface of the finally supported hard steel coil is smooth and flat by reducing the total reduction rate and the number of rolling passes and increasing the reduction rate of each pass.
(7) Annealing and pickling the cold-rolled hard steel coil, and placing the cold-rolled hard steel coil into a cold annealing and pickling line for continuous annealing and pickling;
(8) and (3) leveling the cold-rolled hard steel, leveling the annealed and pickled cold-rolled hard steel coil by using a leveling machine, shearing the steel coil into plates, and finally packaging the plates.
The surface of the flattened cold-rolled hard steel coil plate is shown in figure 1, and the surface of the flattened cold-rolled hard steel coil plate is flat, smooth and free from wrinkles.
Through the correlation detection, the correlation indexes of the cold-rolled hard steel coil in the embodiment 1 are shown in table 2:
TABLE 2
Example 2
(1) And (3) molten iron pretreatment, namely performing decarburization treatment on the molten iron sequentially through an AOD converter and a VOD vacuum smelting furnace, and then putting the decarburized molten iron into an LF refining furnace for desulfurization to finish the pretreatment.
(2) Casting a slab, continuously casting the pretreated molten iron to form a ferritic stainless steel slab (the slab size is 220mm 1270mm 11000 mm), placing the slab into a heat-preservation pit for heat preservation and slow cooling, wherein the slab comprises the following internal components: w (C) is less than or equal to 0.025 percent, w (Si) is less than or equal to 1.00 percent, w (Mn) is less than or equal to 1.00 percent, w (S) is less than or equal to 0.030 percent, w (P) is less than or equal to 0.030 percent, 20.50 percent w (Cr) is less than or equal to 23.00 percent, 0.30 percent w (Cu) is less than or equal to 0.80 percent, w (N) is less than or equal to 0.025 percent, w (C + N) is less than or equal to 0.1 percent, w (Ti + Nb) is less than or equal to 0.8 percent, and the balance of iron and inevitable impurities. (2) And (4) grinding the plate blank, and carrying out hot grinding on the surface of the plate blank.
(3) And (3) heating the plate blank, heating the ground plate blank to 1150-1200 ℃, and preserving heat for 20-60min so as to facilitate subsequent rolling.
(4) And (2) slab rolling, namely firstly carrying out rough rolling on the heated slab by using a rough rolling mill, specifically, carrying out 5-pass rolling on the rough rolling with a total reduction rate of 86.4%, then carrying out finish rolling by using a steckel mill, wherein the finish rolling adopts 5-7-pass rolling with a total reduction rate of 80% -89%, and coiling the finish rolled steel strip into a hot rolling black coil.
(5) And annealing and pickling the hot-rolled black coil, wherein the hot-rolled black coil is annealed and pickled at the temperature of 950-1000 ℃ to form the NO1 plate with the thickness of 3.003 mm.
(6) Rolling NO1 plates, and rolling NO1 plates by a twenty-high rolling mill to form a cold-rolled hard steel coil, wherein the total rolling reduction is 60.311%, the rolling passes are 6, and the reduction ratio and the plate thickness of each pass are shown in Table 3:
TABLE 3
(7) Annealing and pickling the cold-rolled hard steel coil, and placing the cold-rolled hard steel coil into a cold annealing and pickling line for continuous annealing and pickling;
(8) and (3) leveling the cold-rolled hard steel, leveling the annealed and pickled cold-rolled hard steel coil by using a leveling machine, shearing and splitting, and finally packaging.
The surface of the flattened cold-rolled hard steel coil is shown in figure 2, and the surface of the steel coil is flat, smooth and free from wrinkles.
Through the correlation detection, the correlation indexes of the cold-rolled hard steel coil in the embodiment 2 are shown in table 4:
TABLE 4
As can be seen from tables 1-4, the mechanical properties of the plate manufactured by the method are not different from those of the conventional mode, and the plate reaches the relevant standard, the method reduces the thickness of the NO.1 plate, controls the thickness target of the cold rolling raw material, reduces the cold rolling deformation pass, reduces the total rolling deformation, reduces the rolling deformation rate from 74.780% of the rolling deformation rate of the original traditional twenty-high rolling mill to 60.311% -65.763%, and combines the graphs of FIGS. 1 and 2 to show that the rolling deformation rate is reduced, and the rolling wrinkling defect formed on the plate surface of the product is eliminated.
Claims (6)
1. A443 ultra-pure ferritic stainless steel anti-wrinkling cold rolling method is characterized by comprising the following steps:
(1) the method comprises the following steps of (1) pretreating molten iron, namely decarbonizing and desulfurizing the molten iron;
(2) continuously casting molten iron, namely continuously casting the pretreated molten iron into a plate blank, and then placing the plate blank into a heat preservation pit for slow cooling;
(3) slab grinding, namely carrying out hot grinding on the surface of the slab;
(4) heating the plate blank, namely heating the cast plate blank to 1150-1200 ℃, and preserving heat for 20-60 min;
(5) rolling the plate blank, namely rolling the heated plate blank into a hot-rolled black coil;
(6) annealing and pickling the hot-rolled black coil, and annealing and pickling the hot-rolled black coil at 950-1000 ℃ to form an NO1 plate;
(7) rolling the NO1 plate, namely rolling the NO1 plate into a cold-rolled hard steel coil by adopting a twenty-high rolling mill;
(8) annealing and pickling the cold-rolled hard steel coil, and placing the cold-rolled hard steel coil into a cold annealing and pickling line for continuous annealing and pickling;
(9) and (3) leveling cold-rolled hard steel, leveling the annealed and pickled cold-rolled hard steel coil, shearing, splitting and finally packaging.
2. The anti-wrinkling cold rolling method of 443 ultra-pure ferritic stainless steel according to claim 1, characterized in that in the step (1), the molten iron is smelted in sequence by an AOD converter, a VOD vacuum smelting furnace and an LF refining furnace.
3. The anti-wrinkling cold rolling method for 443 ultra-pure ferritic stainless steel according to claim 1 is characterized in that the chemical composition of the slab in the step (2) is as follows by mass percent: w (C) is less than or equal to 0.025 percent, w (Si) is less than or equal to 1.00 percent, w (Mn) is less than or equal to 1.00 percent, w (S) is less than or equal to 0.030 percent, w (P) is less than or equal to 0.030 percent, 20.50 percent w (Cr) is less than or equal to 23.00 percent, 0.30 percent w (Cu) is less than or equal to 0.80 percent, w (N) is less than or equal to 0.025 percent, w (C + N) is less than or equal to 0.1 percent, w (Ti + Nb) is less than or equal to 0.8 percent, and the balance of iron and inevitable impurities.
4. The anti-wrinkling cold rolling method of 443 ultra-pure ferritic stainless steel according to claim 1, characterized in that the slab heated in step (5) is firstly rough rolled by a rough rolling mill for 5 passes with a total reduction of 86.4%, then finish rolled by a steckel mill for 5-7 passes with a total reduction of 80% -89%, and finally coiled into a hot rolling black coil.
5. The anti-wrinkling cold rolling method of 443 ultra-pure ferritic stainless steel according to claim 1, characterized in that the NO1 sheet produced in (6) has a thickness of 3.3-6.0 mm.
6. The anti-wrinkling cold rolling method for 443 ultra-pure ferritic stainless steel according to claim 1, characterized in that the total rolling reduction in (7) is 60-65%, and the number of rolling passes is 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111409923.9A CN114082782A (en) | 2021-11-20 | 2021-11-20 | Anti-wrinkling cold rolling method for 443 ultra-pure ferrite stainless steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111409923.9A CN114082782A (en) | 2021-11-20 | 2021-11-20 | Anti-wrinkling cold rolling method for 443 ultra-pure ferrite stainless steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114082782A true CN114082782A (en) | 2022-02-25 |
Family
ID=80304560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111409923.9A Pending CN114082782A (en) | 2021-11-20 | 2021-11-20 | Anti-wrinkling cold rolling method for 443 ultra-pure ferrite stainless steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114082782A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114686751A (en) * | 2022-04-11 | 2022-07-01 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Brittle fracture prevention production method of high-chromium ferrite stainless steel |
| CN115094325A (en) * | 2022-07-05 | 2022-09-23 | 鞍钢联众(广州)不锈钢有限公司 | Ultrapure ferrite stainless steel for elevator panel and manufacturing method thereof |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101294260A (en) * | 2007-04-24 | 2008-10-29 | 宝山钢铁股份有限公司 | High-strength stainless cold-rolled steel strip and method for manufacturing same |
| CN101724784A (en) * | 2008-10-23 | 2010-06-09 | 宝山钢铁股份有限公司 | Stainless cold-rolling strip steel and manufacturing method thereof |
| CN103276299A (en) * | 2013-04-16 | 2013-09-04 | 宝钢不锈钢有限公司 | High-surface quality ferrite stainless steel plate and manufacturing method thereof |
| CN103506381A (en) * | 2012-06-28 | 2014-01-15 | 宝钢不锈钢有限公司 | Rolling method for solving surface wrinkling problem of ferritic stainless steel |
| CN103667950A (en) * | 2013-12-05 | 2014-03-26 | 宁波宝新不锈钢有限公司 | 430 stainless steel for cold stamping processing, and manufacturing method thereof |
| CN105821299A (en) * | 2016-03-28 | 2016-08-03 | 宝钢不锈钢有限公司 | High-corrosion-resistance antibacterial ferrite stainless steel and manufacturing method thereof |
| CN106435352A (en) * | 2016-06-30 | 2017-02-22 | 宝钢不锈钢有限公司 | Sn-containing ferrite stainless steel with low cost and high corrosion resistance, and manufacturing method thereof |
| CN110819877A (en) * | 2019-10-18 | 2020-02-21 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Method for producing ultra-pure ferrite stainless steel for decoration by using steckel mill |
| CN113388780A (en) * | 2021-05-25 | 2021-09-14 | 宁波宝新不锈钢有限公司 | 430 ferrite stainless steel for kitchenware panel and preparation method thereof |
| CN113528765A (en) * | 2021-06-18 | 2021-10-22 | 鞍钢联众(广州)不锈钢有限公司 | Method for improving surface wrinkling defect of titanium-containing ferrite stainless steel |
-
2021
- 2021-11-20 CN CN202111409923.9A patent/CN114082782A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101294260A (en) * | 2007-04-24 | 2008-10-29 | 宝山钢铁股份有限公司 | High-strength stainless cold-rolled steel strip and method for manufacturing same |
| CN101724784A (en) * | 2008-10-23 | 2010-06-09 | 宝山钢铁股份有限公司 | Stainless cold-rolling strip steel and manufacturing method thereof |
| CN103506381A (en) * | 2012-06-28 | 2014-01-15 | 宝钢不锈钢有限公司 | Rolling method for solving surface wrinkling problem of ferritic stainless steel |
| CN103276299A (en) * | 2013-04-16 | 2013-09-04 | 宝钢不锈钢有限公司 | High-surface quality ferrite stainless steel plate and manufacturing method thereof |
| CN103667950A (en) * | 2013-12-05 | 2014-03-26 | 宁波宝新不锈钢有限公司 | 430 stainless steel for cold stamping processing, and manufacturing method thereof |
| CN105821299A (en) * | 2016-03-28 | 2016-08-03 | 宝钢不锈钢有限公司 | High-corrosion-resistance antibacterial ferrite stainless steel and manufacturing method thereof |
| CN106435352A (en) * | 2016-06-30 | 2017-02-22 | 宝钢不锈钢有限公司 | Sn-containing ferrite stainless steel with low cost and high corrosion resistance, and manufacturing method thereof |
| CN110819877A (en) * | 2019-10-18 | 2020-02-21 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Method for producing ultra-pure ferrite stainless steel for decoration by using steckel mill |
| CN113388780A (en) * | 2021-05-25 | 2021-09-14 | 宁波宝新不锈钢有限公司 | 430 ferrite stainless steel for kitchenware panel and preparation method thereof |
| CN113528765A (en) * | 2021-06-18 | 2021-10-22 | 鞍钢联众(广州)不锈钢有限公司 | Method for improving surface wrinkling defect of titanium-containing ferrite stainless steel |
Non-Patent Citations (5)
| Title |
|---|
| 任娟红等: "终轧温度对443 铁素体不锈钢组织、织构及成形性能的影响", 金属热处理, vol. 46, no. 1, pages 200 - 204 * |
| 张健;: "酒钢铁素体不锈钢研发思考", 甘肃冶金, no. 05, pages 22 - 28 * |
| 王继州: "不锈钢热带退火酸洗工艺与设备研究", 中国优秀硕士学位论文全文数据库工程科技Ⅰ辑, no. 7, pages 2 - 4 * |
| 陈兴润等: "退火温度对443 超纯铁素体不锈钢冷轧板性能的影响", 材料热处理学报, vol. 41, no. 8, pages 74 - 79 * |
| 陈安忠等: "冷轧工艺对４４３铁素体不锈钢抗皱性能影响", 中国冶金, vol. 31, no. 2, pages 84 - 89 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114686751A (en) * | 2022-04-11 | 2022-07-01 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Brittle fracture prevention production method of high-chromium ferrite stainless steel |
| CN115094325A (en) * | 2022-07-05 | 2022-09-23 | 鞍钢联众(广州)不锈钢有限公司 | Ultrapure ferrite stainless steel for elevator panel and manufacturing method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2020169075A1 (en) | High-strength weather-proof thin steel strip and production method therefor | |
| CN106086638B (en) | A kind of Galvanized Dual Phase Steel and its production method | |
| US20120285584A1 (en) | Manufacture Process Of Non-Oriented Silicon Steel With High Magnetic Induction | |
| CN108018489A (en) | A kind of economical high magnetic induction grain-oriented silicon steel and production method | |
| CN114082782A (en) | Anti-wrinkling cold rolling method for 443 ultra-pure ferrite stainless steel | |
| CN105274427A (en) | High-magnetic-induction oriented silicon steel and production method | |
| CN109055861B (en) | Low-iron-loss high-magnetic-induction oriented silicon steel strip and preparation method thereof | |
| CN113774274A (en) | Low-cost well-formed battery case steel and production method thereof | |
| CN106521311A (en) | Bell-annealing tin plate and preparation method thereof | |
| WO2019062732A1 (en) | Cold-rolled magnetic lamination steel with excellent magnetic properties and manufacturing method therefor | |
| CN111748740A (en) | Non-oriented silicon steel free of corrugated defects and excellent in magnetism and production method thereof | |
| CN103510005A (en) | Method for manufacturing middle-grade cold-rolled non-oriented electrical steel | |
| CN110983179A (en) | Steel for one-time cold rolling and continuous annealing packaging and preparation method thereof | |
| CN107177788A (en) | A kind of secondary cold-rolling tin plate and its production method | |
| CN111534760B (en) | Hot-rolled hot-formed steel and preparation method thereof | |
| CN111850402B (en) | Method for producing high-strength corrosion-resistant electromagnetic iron core steel plate in short process | |
| CN110079733B (en) | Ultra-thin ultra-high strength medium carbon bainite steel and manufacturing method thereof | |
| CN110983180A (en) | Hot-rolled high-strength steel and preparation method and application thereof | |
| CN107460404B (en) | A kind of yield strength 800MPa ultra-high strength strip steel and preparation method thereof | |
| CN111424221B (en) | Stainless steel plate for lamination and manufacturing method thereof | |
| CN111534757B (en) | Steel for packaging, production method thereof and packaging product | |
| CN111041351A (en) | Production method of high-surface acid-washing product capable of being used as electroplating substrate | |
| JPS5980726A (en) | Production of high strength cold rolled steel sheet having excellent deep drawability and small plate anisotropy | |
| CN110541123B (en) | Cold-rolled strip steel for battery case and preparation method thereof | |
| CN115233102B (en) | Low-yield-ratio high-strength steel plate 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 |