CN112845594B - Hot rolling production process of low-hardness ferrite stainless steel - Google Patents
Hot rolling production process of low-hardness ferrite stainless steel Download PDFInfo
- Publication number
- CN112845594B CN112845594B CN202011576547.8A CN202011576547A CN112845594B CN 112845594 B CN112845594 B CN 112845594B CN 202011576547 A CN202011576547 A CN 202011576547A CN 112845594 B CN112845594 B CN 112845594B
- Authority
- CN
- China
- Prior art keywords
- rolling
- less
- equal
- stainless steel
- low
- 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.)
- Active
Links
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 34
- 238000005098 hot rolling Methods 0.000 title claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 239000010935 stainless steel Substances 0.000 title description 9
- 229910000859 α-Fe Inorganic materials 0.000 title description 4
- 238000005096 rolling process Methods 0.000 claims abstract description 90
- 238000010438 heat treatment Methods 0.000 claims abstract description 21
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 11
- 239000011574 phosphorus Substances 0.000 claims abstract description 11
- 238000000605 extraction Methods 0.000 claims abstract description 7
- 238000005266 casting Methods 0.000 claims abstract description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 11
- 239000011651 chromium Substances 0.000 claims description 9
- 239000010936 titanium Substances 0.000 claims description 7
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 6
- 229910052804 chromium Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 239000011572 manganese Substances 0.000 claims description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 5
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 229910052717 sulfur Inorganic materials 0.000 claims description 3
- 239000011593 sulfur Substances 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 abstract description 15
- 239000010959 steel Substances 0.000 abstract description 15
- 238000000034 method Methods 0.000 abstract description 12
- 230000007547 defect Effects 0.000 abstract description 8
- 239000011159 matrix material Substances 0.000 abstract description 6
- 238000000227 grinding Methods 0.000 abstract description 5
- 238000012545 processing Methods 0.000 abstract description 4
- 238000012958 reprocessing Methods 0.000 abstract description 3
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000010963 304 stainless steel Substances 0.000 description 1
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000011268 retreatment Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
- B21B3/02—Rolling special iron alloys, e.g. stainless steel
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/004—Heating the product
-
- 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
- B21B2001/225—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 by hot-rolling
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Heat Treatment Of Steel (AREA)
- Metal Rolling (AREA)
Abstract
The invention discloses a hot rolling production process of low-hardness ferritic stainless steel, which comprises the following steps of casting a plate blank, and obtaining the low-hardness ferritic stainless steel through a heating furnace, rough rolling and finish rolling; the heating temperature of the heating furnace is 1240 ℃, the extraction temperature of the plate blank is 1190 ℃, the in-furnace time is more than 200 minutes, the phosphorus removal mode is mainly phosphorus removal, the pressure is 25Mpa, and the plate blank is used in full length; in the rough rolling step, the roll diameter of a working roll of the rough rolling mill is less than or equal to 1050mm, the rolling delay usage amount of the working roll of the rough rolling mill is less than or equal to 5000 tons, the rolling force of the rough rolling mill is less than 1200 tons per pass, and 7 passes of rolling are carried out in total to obtain an intermediate blank with the thickness of 26 mm; and (3) finish rolling, wherein the finish rolling working roll is less than or equal to 680mm, the rolling force of a finish rolling mill is less than 1200 tons/pass, the finish rolling is carried out for 5 passes in total, and the target thickness is 3.5-5.0 mm. The method has the advantages of effectively reducing the falling of the matrix of the strip steel, further preventing the occurrence of steel sticking defects, improving the surface quality of products and reducing the reprocessing, grinding and processing cost.
Description
Technical Field
The invention belongs to the technical field of stainless steel production, and particularly relates to a hot rolling production process of low-hardness ferritic soil stainless steel.
Background
The chromium content of the ferrite stainless steel (400 series) is 15-30 percent, and the ferrite stainless steel has a body-centered cubic crystal structure. The main elements of the steel are chromium (more than 10 percent) and iron, generally no nickel, sometimes a small amount of Mo, elements such as Ti, Nb and the like which improve the surface abrasiveness, chromium is an element which is particularly corrosion-resistant for stainless steel, and the price is relatively stable. Meanwhile, the steel has the characteristics of large heat conductivity coefficient, small expansion coefficient, good oxidation resistance, excellent stress corrosion resistance and the like, and is mainly used for manufacturing parts which are resistant to corrosion of atmosphere, steam, water and oxidizing acid. Ferritic stainless steels (400 series) are not only relatively low in cost and stable, but also have a number of unique features and advantages, and have proven to be an excellent alternative material in many applications where it was originally thought that only austenitic stainless steels (300 series) could be used. Ferritic stainless steel (400 series) has a hardness of about 150HV, is low-hardness ferritic stainless steel, has higher corrosion resistance than conventional 304 stainless steel, and is widely used in road facilities such as fences and street lamps, industrial facilities such as boilers and water tanks, household appliances such as western tableware, gas stoves and refrigerators, and interior and exterior materials of elevators and buildings. In the prior art, the low-hardness ferritic stainless steel has weak base body bonding strength, the base body falls off due to deformation caused by rolling in the hot rolling process, adheres to a roller and further adheres to the surface of subsequent strip steel, the adhesion phenomenon repeatedly falls off, and finally the full-length point-line pit-shaped steel-sticking defects on the surface of the strip steel affect the surface quality, and if the steel-sticking defects appear after hot rolling, the surface grinding affects the cold rolling operability of post-engineering, and meanwhile, the production cost is increased.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems that the base body bonding strength of the low-hardness ferritic stainless steel in the prior art is weak, the base body falls off due to deformation caused by rolling in the hot rolling process, adheres to a roller, further adheres to the surface of the subsequent strip steel, repeatedly falls off and adheres, and finally, the full-length point-line pit-shaped steel-sticking defect of the surface of the strip steel is overcome, the invention aims to provide a low-hardness ferritic stainless steel hot rolling production process, which improves the formation thickness of an oxide skin on the surface of a billet and reduces the contact amount of the billet and the roller by increasing the furnace temperature of a heating furnace, the furnace time and the billet extraction temperature; the surface smoothness of the roller is ensured by the rolling usage amount of the rough rolling roller, the friction coefficient is reduced, and the friction with a billet base body is reduced; the rolling force of a rough rolling/finishing mill is reduced and the load in the billet deformation process is reduced by reducing the roll diameter of a rough rolling/finishing rolling working roll, increasing the rough rolling pass; effectively reduces the falling of the matrix of the strip steel, further prevents the defect of steel sticking, improves the surface quality of products and reduces the reprocessing, grinding and processing cost.
2. Technical scheme
In order to achieve the purpose and achieve the technical effect, the invention adopts the following technical scheme:
a hot rolling production process of low-hardness ferritic stainless steel is characterized by comprising the following steps: obtaining low-hardness ferritic stainless steel with target thickness by casting a plate blank through a heating furnace, rough rolling and finish rolling; the thickness of the cast slab is 220 mm; the heating temperature of the heating furnace is 1240 ℃, the plate blank extraction temperature is 1190 ℃, the in-furnace time is more than 200 minutes, the phosphorus removal mode is mainly phosphorus removal, the pressure is 25Mpa, and the plate blank is used in full length; in the rough rolling step, the roll diameter of a working roll of the rough rolling mill is less than or equal to 1050mm, the rolling using amount of the working roll of the rough rolling mill is less than or equal to 5000 tons, the rolling force of the rough rolling mill is less than 1200 tons per pass, and 7 passes of rolling are carried out in total to obtain an intermediate blank with the thickness of 26 mm; in the finish rolling step, a finish rolling working roll is less than or equal to 680mm, the rolling force of a finish rolling mill is less than 1200 tons/pass, the finish rolling is carried out for 5 passes in total, and the target thickness is 3.5-5.0 mm.
In a specific embodiment of the present invention, the low-hardness ferritic stainless steel comprises the following components by mass percent: carbon (C) is less than or equal to 0.025, manganese (Mn) is less than or equal to 0.4, nickel (Ni) is less than or equal to 0.5, silicon (Si) is less than or equal to 0.3, phosphorus (P) is less than or equal to 0.035, sulfur (S) is less than or equal to 0.01, chromium (Cr) is 19.5-22, copper (Cu) is 0.4-0.6, titanium (Ti) is 0.2-0.35, and the balance is iron (Fe) and inevitable impurities.
In a specific embodiment of the present invention, the low hardness ferritic stainless steel has a hardness of 150 ± 10 HV.
3. Advantageous effects
Compared with the prior art, the invention has the beneficial effects that: by means of the temperature of the heating furnace, the furnace time and the billet extraction temperature are increased, the thickness of oxide skin formed on the surface of the billet is increased, and the contact amount between the billet and the roller is reduced. The rough rolling roller rolling usage amount ensures the roller surface smoothness, reduces the friction coefficient and reduces the friction with the billet base body. The rolling force of the rough rolling/finishing rolling mill is reduced and the load in the billet deformation process is reduced by reducing the roll diameter of the rough rolling/finishing rolling working roll, increasing the rough rolling pass. Therefore, the falling of the matrix of the strip steel is effectively reduced, the defect of steel sticking is further prevented, the surface quality of the product is improved, and the retreatment and grinding processing cost is reduced.
Detailed Description
The technical solutions of the present invention will be described clearly and completely below, and it is obvious that the described embodiments are some embodiments of the invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The low-hardness ferritic stainless steel comprises the following components in percentage by mass: carbon (C) is less than or equal to 0.025, manganese (Mn) is less than or equal to 0.4, nickel (Ni) is less than or equal to 0.5, silicon (Si) is less than or equal to 0.3, phosphorus (P) is less than or equal to 0.035, sulfur (S) is less than or equal to 0.01, chromium (Cr) is 19.5-22, copper (Cu) is 0.4-0.6, titanium (Ti) is 0.2-0.35, and the balance is iron (Fe) and inevitable impurities. The hardness of the stainless steel is 150 +/-10 HV.
Comparative example 1
According to the mass percent, the low-hardness ferritic stainless steel is prepared by using the following hot rolling production process, which comprises the following steps of casting plate blanks with the thickness of 220mm → heating of a heating furnace → rough rolling → finish rolling → finished products with target thickness; in the heating step of the heating furnace, the furnace temperature of the heating furnace is 1200 ℃, the extraction temperature of the plate blank is 1170 ℃, the furnace time is 180 minutes, the descaling mode is main descaling, rough rolling for 1 pass and rough rolling for 2 passes, the rough rolling, finish rolling working rolls and the rolling force are not limited, and an intermediate blank with the thickness of 26mm is obtained after 5 passes of rough rolling; and (5) finish rolling, wherein the target thickness is 3.5-5.0 mm.
The low-hardness ferritic stainless steel obtained by the process has the defects that a surface matrix falls off, the fallen matrix is bonded on the surface of the stainless steel, and the steel is bonded, and needs to be polished.
Example 1
According to the mass percent, the low-hardness ferritic stainless steel is prepared by using a low-hardness ferritic stainless steel hot rolling production process, and the method comprises the following steps: heating the cast plate blank by a heating furnace, roughly rolling and finely rolling to obtain low-hardness ferritic stainless steel with target thickness; the thickness of the cast slab is 220 mm; the heating temperature of the heating furnace is 1240 ℃, the plate blank extraction temperature is 1190 ℃, the in-furnace time is more than 200 minutes, the phosphorus removal mode is mainly phosphorus removal, the pressure is 25Mpa, and the plate blank is used in full length; in the rough rolling step, the roll diameter of a working roll of the rough rolling mill is less than or equal to 1050mm, the rolling delay usage amount of the working roll of the rough rolling mill is less than or equal to 5000 tons, the rolling force of the rough rolling mill is less than 1200 tons per pass, and 7 passes of rolling are performed in total to obtain an intermediate blank with the thickness of 26 mm; in the finish rolling step, a finish rolling working roll is less than or equal to 680mm, the rolling force of a finish rolling mill is less than 1200 tons/pass, the finish rolling is carried out for 5 passes in total, and the target thickness is 3.5-5.0 mm.
In example 1, compared to comparative example 1, the heating furnace temperature increased the time of the furnace and the billet drawing temperature, thereby increasing the thickness of scale formed on the billet surface and reducing the contact amount between the billet and the roll. The rough rolling roller rolling usage amount ensures the roller surface smoothness, reduces the friction coefficient and reduces the friction with the billet base body. The rolling force of the rough rolling/finishing rolling mill is reduced and the load in the billet deformation process is reduced by reducing the roll diameter of the rough rolling/finishing rolling working roll, increasing the rough rolling pass. Therefore, the matrix falling of the strip steel is effectively reduced, the steel sticking defect is further prevented, the surface quality of the low-hardness ferritic stainless steel product is improved, and the reprocessing, grinding and processing cost is reduced.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (2)
1. A hot rolling production process of low-hardness ferritic stainless steel is characterized by comprising the following steps: obtaining low-hardness ferritic stainless steel with target thickness by casting a plate blank through a heating furnace, rough rolling and finish rolling; the thickness of the cast slab is 220 mm; the heating temperature of the heating furnace is 1240 ℃, the plate blank extraction temperature is 1190 ℃, the in-furnace time is more than 200 minutes, the phosphorus removal mode is mainly phosphorus removal, the pressure is 25Mpa, and the plate blank is used in full length; in the rough rolling step, the roll diameter of a working roll of the rough rolling mill is less than or equal to 1050mm, the rolling delay usage amount of the working roll of the rough rolling mill is less than or equal to 5000 tons, the rolling force of the rough rolling mill is less than 1200 tons per pass, and 7 passes of rolling are performed in total to obtain an intermediate blank with the thickness of 26 mm; in the finish rolling step, the roll diameter of a finish rolling working roll is less than or equal to 680mm, the rolling force of a finish rolling mill is less than 1200 tons/pass, the finish rolling is carried out for 5 passes in total, and the target thickness is 3.5-5.0 mm;
the low-hardness ferritic stainless steel comprises the following components in percentage by mass: carbon (C) is less than or equal to 0.025, manganese (Mn) is less than or equal to 0.4, nickel (Ni) is less than or equal to 0.5, silicon (Si) is less than or equal to 0.3, phosphorus (P) is less than or equal to 0.035, sulfur (S) is less than or equal to 0.01, chromium (Cr) is 19.5-22, copper (Cu) is 0.4-0.6, titanium (Ti) is 0.2-0.35, and the balance is iron (Fe) and inevitable impurities.
2. The hot rolling production process of the low-hardness ferritic stainless steel according to claim 1, characterized in that: the hardness of the low-hardness ferritic stainless steel is 150 +/-10 HV.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011576547.8A CN112845594B (en) | 2020-12-28 | 2020-12-28 | Hot rolling production process of low-hardness ferrite stainless steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011576547.8A CN112845594B (en) | 2020-12-28 | 2020-12-28 | Hot rolling production process of low-hardness ferrite stainless steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112845594A CN112845594A (en) | 2021-05-28 |
| CN112845594B true CN112845594B (en) | 2022-06-14 |
Family
ID=75997542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011576547.8A Active CN112845594B (en) | 2020-12-28 | 2020-12-28 | Hot rolling production process of low-hardness ferrite stainless steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112845594B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113462967B (en) * | 2021-06-19 | 2022-05-17 | 山东盛阳金属科技股份有限公司 | 430 ferrite stainless steel production process |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101607266A (en) * | 2009-07-20 | 2009-12-23 | 山东泰山钢铁集团有限公司 | A kind of steekle mill that is applicable to is produced the method for ferritic stainless steel hot-rolling steel band |
| CN101733274B (en) * | 2009-12-04 | 2011-09-21 | 东北大学 | Hot rolling method for improving combination property of medium/high chromium ferrite stainless steel |
| CN104928457A (en) * | 2015-07-11 | 2015-09-23 | 山东泰山钢铁集团有限公司 | Method for producing high-ductility ferritic stainless steel band through furnace roll and continuous mill |
| CN107537857A (en) * | 2017-07-10 | 2018-01-05 | 首钢京唐钢铁联合有限责任公司 | A kind of ferrite rolling method |
| CN109550793A (en) * | 2017-09-27 | 2019-04-02 | 宝钢不锈钢有限公司 | A kind of method of high-chrome super-purity ferrite stainless steel hot-rolling sticking defect in reduction |
| CN110252809B (en) * | 2019-07-01 | 2021-03-12 | 山西太钢不锈钢股份有限公司 | Method for reducing surface roughness of medium-chromium ferrite stainless steel |
| CN110438414B (en) * | 2019-09-02 | 2020-10-27 | 鞍钢股份有限公司 | Method for eliminating surface cracks of ultra-wide ferritic stainless steel medium plate |
-
2020
- 2020-12-28 CN CN202011576547.8A patent/CN112845594B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN112845594A (en) | 2021-05-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100453678C (en) | Steel plate for hot-rolled double-side enamel and method for producing same | |
| CN101649418B (en) | Ferrite stainless steel cold-rolled steel band and manufacturing method thereof | |
| CN100447280C (en) | Impact stage low carbon steel hot-rolled sheet and mfg. method thereof | |
| JP4721916B2 (en) | Ferritic stainless steel sheet with small in-plane anisotropy during molding and excellent ridging resistance and skin roughness resistance, and method for producing the same | |
| CN101328560B (en) | Ni seamless steel pipe and manufacturing method thereof | |
| CN101892437A (en) | Good-mirror polishability low-magnetic austenitic stainless steel and manufacturing method thereof | |
| CN102312167B (en) | High-strength hot rolled steel plate for counter enameling and manufacturing method thereof | |
| CN111085542B (en) | Method for improving pitting defects on surface of cold-rolled 316L stainless steel | |
| CN112157135B (en) | Production method of economical cold-rolled steel plate for water heater water tank outer plate | |
| CN101586210B (en) | High strength enamel steel and producing technology and enamel firing technology thereof | |
| WO2020169077A1 (en) | Low-cost weathering steel and production method thereof | |
| CN101205589A (en) | Soft ferritic stainless steel and manufacture method thereof | |
| CN108866451A (en) | Yield strength 240MPa level structure cold-rolled steel sheet and preparation method | |
| CN112845594B (en) | Hot rolling production process of low-hardness ferrite stainless steel | |
| CN105917016A (en) | Ferritic stainless steel and method for producing same | |
| CN102206791B (en) | Mo-containing ferritic stainless steel and manufacturing method thereof | |
| CN110777301B (en) | Cold-rolled enamel steel and manufacturing method thereof | |
| CN110157979A (en) | A kind of milling method improving plate surface quality | |
| CN111424221B (en) | Stainless steel plate for lamination and manufacturing method thereof | |
| CN114921718A (en) | Container steel for multi-mode sheet billet continuous casting and rolling production line and preparation method thereof | |
| CN113684415A (en) | 6mm EH36 steel and manufacturing method thereof | |
| CN105618507A (en) | Anti-stripping iron oxide scale structure on surface of hot rolled plate and control process for anti-stripping iron oxide scale structure | |
| JPS5943824A (en) | Manufacture of cold rolled steel plate for press forming | |
| CN108504834A (en) | A kind of production method of Mo ultralow-carbon martensitic stainless steel cut deal | |
| CN111575466B (en) | Heat treatment preparation method of heat-strength corrosion-resistant steel |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |