CN101245435A - Method for producing hot-rolled ferritic stainless steel strip steel - Google Patents
Method for producing hot-rolled ferritic stainless steel strip steel Download PDFInfo
- Publication number
- CN101245435A CN101245435A CNA2007100376630A CN200710037663A CN101245435A CN 101245435 A CN101245435 A CN 101245435A CN A2007100376630 A CNA2007100376630 A CN A2007100376630A CN 200710037663 A CN200710037663 A CN 200710037663A CN 101245435 A CN101245435 A CN 101245435A
- Authority
- CN
- China
- Prior art keywords
- heating
- rolling
- temperature
- section
- hot
- 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.)
- Granted
Links
Classifications
-
- Y02W30/54—
Landscapes
- Heat Treatment Of Steel (AREA)
- Heat Treatment Of Sheet Steel (AREA)
- Metal Rolling (AREA)
Abstract
The invention discloses a method for producing a hot-rolled ferrite stainless strip steel, which comprises the following steps: 1) the chemical components by weight percentage are: 0.025-0.04 percent of C, less than or equal to 1.00 percent of Si, 0.25-0.4 percent of Mn, less than or equal to 0.030 percent of S, less than or equal to 0.035 of P, 12-12.5 percent of Cr and the rest is Fe; 2) a billet is formed by smelting and casting; 3) heating: the heating temperature zone for heating are divided into a heat recovery section, a preheating section, a I heating section, a II heating section and a holding section; furnace gas is controlled to be neutral atmosphere of non-oxidizing atmosphere; 4) when in heat rolling and rough rolling, the rolling temperature is 1,120 DEG C-1,160 DEG C, and the deforming speed during rolling is 10/s-12/s; 5) finish rolling: the deforming speed of the last pass rolling is 60/s-90/s, and the outlet temperature of the finish rolling is more than 900 DEG C; 6) cooling is carried out after rolling, and then reeling is carried out. The method of the invention has the advantages that the method guarantees not only the edge quality of the hot-rolled strip steel but also the stamping property of the cold-rolled strip steel, improves the surface finish quality and lowers the production cost, and has high production efficiency and rolling yield, etc.
Description
Technical field
The present invention relates to the stainless steel strip rolling technique, particularly a kind of production method of hot-rolled ferritic stainless steel strip steel.
Background technology
Produce ferritic stainless steel such as 410S hot rolled strip, it is in the process that continuous casting is produced, and slab is easy to generate surface crack, when hot rolling, is easy to generate raw edges.Surface crack also is that severe patient causes the monoblock slab to scrap as the more common a kind of mass defect of 410S continuously cast bloom simultaneously, even the crackle bleed-out takes place, and brings harm to continuous casting production and equipment.Along with its severity increase and quantity increase, make the indexs such as strand zero defect rate, qualification rate and recovery rate of weighing the continuous casting level reduce risings such as iron and steel raw material consumption, cost.Raw material as cold rolling roll bending---hot rolled coil, its quality of edges are influence cold rolling finished width and lumber recoverys and guarantee the key factor that cold rolling production is normally carried out.
Domestic and international stainless steel manufacturer, as: Taiyuan Iron ﹠ Steel Corp (China), day new stainless steel company (Japan) etc., all adopt the mode of adjusting composition, Alfer element (as: chromium, the silicon etc.) content of steel is controlled at higher level, the austenite element is controlled to lower limit, makes the high temperature microstructure of steel be easy to the raw edges defect problem that hot-work solves hot rolled strip.But after adopting this kind mode, hot rolled strip easily produces stamping defect after cold rolling, causes surface of stainless steel product coarse, influences outward appearance and use.The use properties of hot workability and finished strip is to need the unified major issue that solves.
Summary of the invention
The object of the present invention is to provide a kind of production method of hot-rolled ferritic stainless steel strip steel, solve limit that the band steel occurs and technical barrier such as split in rolling, guarantee the hot rolled strip quality of edges, can guarantee the punching performance of cold rolled strip again, improve surface smoothness, simultaneously can reduce production costs production efficiency height, lumber recovery advantages of higher again.
For achieving the above object, technical scheme of the present invention is,
A kind of production method of hot-rolled ferritic stainless steel strip steel, it comprises the steps:
1) the chemical ingredients mass percent of ferritic stainless steel is: C:0.025～0.04, and Si≤1.00, Mn:0.25～0.4, S≤0.030, P≤0.035, Cr:12～12.5, surplus is iron and inevitable impurity;
2) smelt, be cast into base by mentioned component;
3) the walking beam heating furnace heating is adopted in slab heating, and the Heating temperature zone is divided five sections: heat-recovery section, preheating section, heating I section, heating II section, soaking zone; The heating-furnace gas control is made as the neutral atmosphere atmosphere of nonoxidizing atmosphere;
Wherein, 500 ℃～700 ℃ of heat-recovery section temperature, 45～55 minutes heat-up times; 700 ℃～900 ℃ of preheating section temperature, 30～40 minutes heat-up times; 900～1000 ℃ of heating I section temperature, 30～40 minutes heat-up times; 1000～1150 ℃ of heating II section temperature, 30～40 minutes heat-up times; 1120 ℃～1160 ℃ of soaking zone temperature, soaking time 30～40 minutes;
4) hot rolling, during roughing, 1120 ℃～1160 ℃ of rolling temperatures, the roughing deformation rate is controlled to be 75%～85%, rolling deformation speed 10/S～12/S, extreme trace time rolling deformation velocity range is: 8/S～12/S, roughing not the passage temperature out greater than 960 ℃;
5) finish rolling guarantees that extreme trace time rolling deformation velocity range is 60/S～90/S, and the finish rolling temperature out is greater than 900 ℃;
6) roll postcooling, batch.
Further, the interior remaining oxygen of heating-furnace is less than 2%.
Adopt lower alloying constituent, chromium content is controlled at lower limit, and the use properties of steel is best in this scope, but hot workability is relatively poor, easily produces the raw edges defective.
The present invention optimizes the composition of steel, makes that chromium content is controlled at 12%～12.5% in the steel; By rational heating process and rolling technology, slab is rolled into the band steel, in the hot strip rolling process, guarantee quality of edges, prevent the generation of raw edges.Simultaneously, the common surface imperfection of ferritic stainless steel such as surface wrinkling etc. can not appear in the band steel in the deep-processing process of postorder.
Wherein, slab of the present invention adds the heating of thermal recovery walking beam heating furnace, and the Heating temperature zone is divided five sections: heat-recovery section, preheating section, heating I section, heating II section, soaking zone; Slab needs the regular hour when stepped start-stop system moves in stove, even needed time of steel slab surface temperature and internal temperature when each section period span of control heats according to slab and definite.Each section temperature temperature range is that the chromium content according to the 410S steel is controlled to be at 12%～12.5% o'clock, organizes variation characteristic and definite.Because the good plastic zone the during hot-work of 410S steel is narrower, steel is when high temperature deformation, and strip edge portion easily produces cracking, in order to guarantee strip edge portion quality, reduce the limit and split, strict each section of control temperature and time, structure of steel when optimizing high temperature, the high-temp plastic of stabilized steel.On basis, five sections time and temperature range have been determined through a large amount of tests and calculating.
Ferritic stainless steel hot strength, plasticity are relatively poor, and slab expanded by heating in heat-processed is because there are temperature head in steel slab surface and center, and the generation thermal stresses, excessive for fear of thermal stresses, cause the slab crackle, the rate of heating in the heat-processed be should give control.Go into the stove initial stage at slab, it is unsuitable excessive that board briquette and furnace temperature differ; After the slab heating reaches certain temperature, can improve furnace temperature slab is heated to target temperature., in being provided with of heating process, going into the stove initial stage for this reason, keeping lower Heating temperature (500～700 ℃), after this, slab progressively heat up (700～900 ℃, 900～1000 ℃, 1000～1150 ℃, 1120 ℃～1160 ℃) reach the heating target value.Can prevent the generation of slab crackle by this process heating, and guarantee that the tissue of steel reaches the requirement of rolling deformation.
Hot rolling,
During the hot rolling roughing, steel billet is answered the fast speed rolling of low temperature, but can not make the traffic overload of roughing mill, and the roughing deformation rate is controlled to be 75%～85%, and extreme trace time rolling deformation velocity range is: 8/S～12/S, roughing not the passage temperature out greater than 960 ℃.
After entering finishing train, guarantee that extreme trace time rolling deformation velocity range is 60/S～90/S, the finish rolling temperature out is greater than 900 ℃.
Compare with prior art, the present invention has following advantage:
Generally speaking, the solution of 410S steel raw edges defective mainly relies on the adjustment of composition, improves the tissue of steel, makes its high-temp plastic that helps improving steel, prevents the generation with the steel raw edges.Utilize this method no doubt favourable to solving band steel raw edges problem, but, cause that another problem is, behind the cold rolling one-tenth thin plate of the hot rolled strip finished product, steel plate is in striking out the goods process, and product surface has striped to produce, roughness increases, the lighter increases the surface finish workload, and weight person causes goods to scrap, and the product surface roughness reaches 30～50 μ m.The lumber recovery height (more than 97%) of hot rolled strip.
In order to solve the problem of band steel raw edges and product surface roughness, in order to guarantee the cold-rolled steel sheet use properties, steel grade chromium content is controlled at 12%～12.5%, the surfaceness degree of cold-rolled steel sheet goods is improved, roughness can be controlled in below the 10 μ m, the polishing work amount of goods greatly alleviates, and has improved working efficiency.
Along with the reduction of chromium content in the steel, variation has taken place in the high-temp plastic of steel, easily produces the limit during hot rolled strip and splits, split in order to control strip edge, high-temp plastic characteristic according to steel behind the change composition has been worked out heating process, mates suitable rolling technology, and it is controlled to make strip edge split defective.Simultaneously, surface imperfection that is prone in the elimination ferritic stainless steel deep-processing process such as striated surface etc.
The present invention works out reasonably heating, rolling technology by reducing chromium content in the steel, when satisfying product surface smooth finish, guarantees the quality of edges of band steel, and simultaneously, the production cost of hot rolled strip is reduced.Under general condition, solve the strip edge cracking method and better taken into account use properties and reduced production costs.
Embodiment
The embodiment of the invention is an example with the 410S stainless steel strip, referring to table 1, and hot-rolled heating technology parameter such as table 2, hot rolled rolling technological parameter such as table 3.
Table 1 unit: mass percent
| Embodiment | C | Si | Mn | S | P | Cr | Fe |
| 1 | 0.025 | 0.95 | 0.025 | 0.020 | 0.031 | 12.00 | Surplus |
| 2 | 0.040 | 0.82 | 0.030 | 0.025 | 0.030 | 12.30 | Surplus |
| 3 | 0.030 | 0.50 | 0.040 | 0.023 | 0.014 | 12.15 | Surplus |
| 4 | 0.035 | 0.18 | 0.035 | 0.028 | 0.034 | 12.20 | Surplus |
| 5 | 0.032 | 0.30 | 0.028 | 0.004 | 0.018 | 12.50 | Surplus |
| 6 | 0.026 | 0.23 | 0.025 | 0.004 | 0.011 | 12.00 | Surplus |
| 7 | 0.040 | 0.21 | 0.030 | 0.003 | 0.015 | 12.30 | Surplus |
| 8 | 0.030 | 0.19 | 0.040 | 0.005 | 0.014 | 12.05 | Surplus |
| 9 | 0.034 | 0.18 | 0.035 | 0.006 | 0.017 | 12.25 | Surplus |
| 10 | 0.031 | 0.20 | 0.028 | 0.004 | 0.013 | 12.50 | Surplus |
Table 2: hot-rolled heating technology parameter
Table 3: hot rolling processing parameter
In the above-described embodiments, the ratio of 410S stainless steel strip generation raw edges has all dropped to below 3%, and simultaneously, the mechanical property and the surface quality of 410S stainless steel strip satisfy customer requirements, and the deep-draw rear surface does not have surperficial fold, has improved the actual use properties of user.
Claims (2)
1. the production method of a hot-rolled ferritic stainless steel strip steel, it comprises the steps:
1) the composition quality per-cent of ferritic stainless steel is: C:0.025～0.04, and Si≤1.00, Mn:0.25～0.4, S≤0.030, P≤0.035, Cr:12～12.5, surplus is iron and inevitable impurity;
2) smelt, be cast into base by mentioned component;
3) the walking beam heating furnace heating is adopted in slab heating, and the Heating temperature zone is divided five sections: heat-recovery section, preheating section, heating I section, heating II section, soaking zone; The heating-furnace gas control is made as the neutral atmosphere atmosphere of nonoxidizing atmosphere;
Wherein, 500 ℃～700 ℃ of heat-recovery section temperature, 45～55 minutes heat-up times; 700 ℃～900 ℃ of preheating section temperature, 30～40 minutes heat-up times; 900～1000 ℃ of heating I section temperature, 30～40 minutes heat-up times; 1000～1150 ℃ of heating II section temperature, 30～40 minutes heat-up times; 1120 ℃～1160 ℃ of soaking zone temperature, soaking time 30～40 minutes;
4) hot rolling, during roughing, 1120 ℃～1160 ℃ of rolling temperatures, the roughing deformation rate is controlled to be 75%～85%, rolling deformation speed 10/S～12/S, extreme trace time rolling deformation velocity range is: 8/S～12/S, roughing not the passage temperature out greater than 960 ℃;
5) finish rolling guarantees that extreme trace time rolling deformation velocity range is 60/S～90/S, and the finish rolling temperature out is greater than 900 ℃;
6) roll postcooling, batch.
2. the production method of hot-rolled ferritic stainless steel strip steel as claimed in claim 1 is characterized in that, remaining oxygen is less than 2% in the heating-furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100376630A CN100535168C (en) | 2007-02-16 | 2007-02-16 | Method for producing hot-rolled ferritic stainless steel strip steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100376630A CN100535168C (en) | 2007-02-16 | 2007-02-16 | Method for producing hot-rolled ferritic stainless steel strip steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101245435A true CN101245435A (en) | 2008-08-20 |
| CN100535168C CN100535168C (en) | 2009-09-02 |
Family
ID=39946111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100376630A Expired - Fee Related CN100535168C (en) | 2007-02-16 | 2007-02-16 | Method for producing hot-rolled ferritic stainless steel strip steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100535168C (en) |
Cited By (22)
| 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 |
| CN103302104A (en) * | 2012-03-13 | 2013-09-18 | 宝山钢铁股份有限公司 | Method for manufacturing hot rolled silicon steel |
| CN103506383A (en) * | 2013-09-26 | 2014-01-15 | 山西太钢不锈钢股份有限公司 | Method for hot-rolling manufacture of ultra-pure ferrite stainless steel |
| CN103599946A (en) * | 2013-11-22 | 2014-02-26 | 四川西南不锈钢有限责任公司 | Thin stainless steel product rolling process control method |
| CN105396873A (en) * | 2015-11-26 | 2016-03-16 | 佛山市高明区杨和金属材料专业镇技术创新中心 | Production process of stainless steel strip |
| CN106552821A (en) * | 2016-11-21 | 2017-04-05 | 首钢京唐钢铁联合有限责任公司 | A kind of ferrite rolling method |
| CN106583465A (en) * | 2016-11-18 | 2017-04-26 | 首钢京唐钢铁联合有限责任公司 | Method and device for increasing hot rolling speed of ferrite |
| CN106694567A (en) * | 2016-11-22 | 2017-05-24 | 首钢京唐钢铁联合有限责任公司 | Heating method for IF steel in ferrite rolling |
| CN109926454A (en) * | 2019-03-28 | 2019-06-25 | 北京首钢股份有限公司 | A kind of process control method of hot rolling acid-cleaning panel vibration iron plate |
| CN110252809A (en) * | 2019-07-01 | 2019-09-20 | 山西太钢不锈钢股份有限公司 | The method of chrome ferritic stainless steel rough surface band in reduction |
| CN106734233B (en) * | 2016-11-22 | 2019-10-29 | 首钢京唐钢铁联合有限责任公司 | A kind of finishing rolling control method and device of rolling in ferrite domains |
| CN110814030A (en) * | 2019-10-11 | 2020-02-21 | 山东盛阳金属科技股份有限公司 | Heat-resistant composite stainless steel and hot rolling production process thereof |
| CN112387948A (en) * | 2020-11-25 | 2021-02-23 | 宝钢德盛不锈钢有限公司 | Production method for reducing mountain scales on hot-rolled edge of 200-series stainless steel |
| CN112522595A (en) * | 2019-09-19 | 2021-03-19 | 宝山钢铁股份有限公司 | High-strength thin-specification fire-resistant weather-resistant steel plate/steel belt and production method thereof |
| CN112547825A (en) * | 2020-12-08 | 2021-03-26 | 首钢集团有限公司 | Heating method and heating furnace for gas shielded welding wire steel casting blank |
| CN113172089A (en) * | 2021-03-31 | 2021-07-27 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Production method of high-carbon martensitic stainless steel steckel mill |
| CN113621889A (en) * | 2021-08-10 | 2021-11-09 | 山东盛阳金属科技股份有限公司 | N06600 iron-nickel base alloy hot continuous rolling plate coil and acid pickling process thereof |
| CN113661261A (en) * | 2019-03-28 | 2021-11-16 | 日铁不锈钢株式会社 | Ferritic stainless steel sheet for automobile brake disc rotor, and hot-stamped product for automobile brake disc rotor |
| CN113699444A (en) * | 2021-08-18 | 2021-11-26 | 山西太钢不锈钢股份有限公司 | Manufacturing method for eliminating edge cracks of 410L black-skin steel coil |
| CN113957211A (en) * | 2021-10-27 | 2022-01-21 | 宝武杰富意特殊钢有限公司 | Heating control method for preventing decarburization of steel bar of hot-rolled caterpillar track link |
| CN114277319A (en) * | 2021-12-24 | 2022-04-05 | 浦项(张家港)不锈钢股份有限公司 | Preparation process of stainless steel with high nickel content, stainless steel and application |
| CN114645194A (en) * | 2022-02-17 | 2022-06-21 | 宁波宝新不锈钢有限公司 | Preparation method of high-corrosion-resistance ferritic stainless steel |
-
2007
- 2007-02-16 CN CNB2007100376630A patent/CN100535168C/en not_active Expired - Fee Related
Cited By (33)
| 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 |
| KR101609174B1 (en) * | 2012-03-13 | 2016-04-05 | 바오샨 아이론 앤 스틸 유한공사 | Hot Rolled Silicon Steel Producing Method |
| CN103302104A (en) * | 2012-03-13 | 2013-09-18 | 宝山钢铁股份有限公司 | Method for manufacturing hot rolled silicon steel |
| WO2013134897A1 (en) * | 2012-03-13 | 2013-09-19 | 宝山钢铁股份有限公司 | Hot rolled silicon steel producing method |
| JP2015511533A (en) * | 2012-03-13 | 2015-04-20 | バオシャン アイアン アンド スティール カンパニー リミテッド | Method for producing hot rolled silicon steel |
| US9496078B2 (en) | 2012-03-13 | 2016-11-15 | Baoshan Iron & Steel Co., Ltd. | Hot rolled silicon steel producing method |
| CN103506383A (en) * | 2013-09-26 | 2014-01-15 | 山西太钢不锈钢股份有限公司 | Method for hot-rolling manufacture of ultra-pure ferrite stainless steel |
| CN103506383B (en) * | 2013-09-26 | 2016-04-27 | 山西太钢不锈钢股份有限公司 | Super-purity ferrite stainless steel hot rolling making method |
| CN103599946A (en) * | 2013-11-22 | 2014-02-26 | 四川西南不锈钢有限责任公司 | Thin stainless steel product rolling process control method |
| CN103599946B (en) * | 2013-11-22 | 2015-10-21 | 四川西南不锈钢有限责任公司 | Thin Specs stainless steel product operation of rolling control method |
| CN105396873A (en) * | 2015-11-26 | 2016-03-16 | 佛山市高明区杨和金属材料专业镇技术创新中心 | Production process of stainless steel strip |
| CN106583465A (en) * | 2016-11-18 | 2017-04-26 | 首钢京唐钢铁联合有限责任公司 | Method and device for increasing hot rolling speed of ferrite |
| CN106552821A (en) * | 2016-11-21 | 2017-04-05 | 首钢京唐钢铁联合有限责任公司 | A kind of ferrite rolling method |
| CN106694567A (en) * | 2016-11-22 | 2017-05-24 | 首钢京唐钢铁联合有限责任公司 | Heating method for IF steel in ferrite rolling |
| CN106694567B (en) * | 2016-11-22 | 2019-02-01 | 首钢京唐钢铁联合有限责任公司 | A kind of heating means of IF steel in ferrite rolling |
| CN106734233B (en) * | 2016-11-22 | 2019-10-29 | 首钢京唐钢铁联合有限责任公司 | A kind of finishing rolling control method and device of rolling in ferrite domains |
| CN109926454A (en) * | 2019-03-28 | 2019-06-25 | 北京首钢股份有限公司 | A kind of process control method of hot rolling acid-cleaning panel vibration iron plate |
| CN113661261A (en) * | 2019-03-28 | 2021-11-16 | 日铁不锈钢株式会社 | Ferritic stainless steel sheet for automobile brake disc rotor, and hot-stamped product for automobile brake disc rotor |
| CN113661261B (en) * | 2019-03-28 | 2023-09-19 | 日铁不锈钢株式会社 | Ferritic stainless steel sheet for automobile brake disc rotor, and hot-stamped product for automobile brake disc rotor |
| CN110252809A (en) * | 2019-07-01 | 2019-09-20 | 山西太钢不锈钢股份有限公司 | The method of chrome ferritic stainless steel rough surface band in reduction |
| CN112522595A (en) * | 2019-09-19 | 2021-03-19 | 宝山钢铁股份有限公司 | High-strength thin-specification fire-resistant weather-resistant steel plate/steel belt and production method thereof |
| CN110814030A (en) * | 2019-10-11 | 2020-02-21 | 山东盛阳金属科技股份有限公司 | Heat-resistant composite stainless steel and hot rolling production process thereof |
| CN110814030B (en) * | 2019-10-11 | 2021-03-16 | 山东盛阳金属科技股份有限公司 | Heat-resistant composite stainless steel and hot rolling production process thereof |
| CN112387948A (en) * | 2020-11-25 | 2021-02-23 | 宝钢德盛不锈钢有限公司 | Production method for reducing mountain scales on hot-rolled edge of 200-series stainless steel |
| CN112547825A (en) * | 2020-12-08 | 2021-03-26 | 首钢集团有限公司 | Heating method and heating furnace for gas shielded welding wire steel casting blank |
| CN113172089A (en) * | 2021-03-31 | 2021-07-27 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Production method of high-carbon martensitic stainless steel steckel mill |
| CN113621889A (en) * | 2021-08-10 | 2021-11-09 | 山东盛阳金属科技股份有限公司 | N06600 iron-nickel base alloy hot continuous rolling plate coil and acid pickling process thereof |
| CN113699444A (en) * | 2021-08-18 | 2021-11-26 | 山西太钢不锈钢股份有限公司 | Manufacturing method for eliminating edge cracks of 410L black-skin steel coil |
| CN113957211B (en) * | 2021-10-27 | 2023-06-30 | 宝武杰富意特殊钢有限公司 | Heating control method for preventing decarburization of hot-rolled caterpillar chain track section steel bar |
| CN113957211A (en) * | 2021-10-27 | 2022-01-21 | 宝武杰富意特殊钢有限公司 | Heating control method for preventing decarburization of steel bar of hot-rolled caterpillar track link |
| CN114277319A (en) * | 2021-12-24 | 2022-04-05 | 浦项(张家港)不锈钢股份有限公司 | Preparation process of stainless steel with high nickel content, stainless steel and application |
| CN114277319B (en) * | 2021-12-24 | 2022-12-27 | 浦项(张家港)不锈钢股份有限公司 | Preparation process of stainless steel with high nickel content, stainless steel and application |
| CN114645194A (en) * | 2022-02-17 | 2022-06-21 | 宁波宝新不锈钢有限公司 | Preparation method of high-corrosion-resistance ferritic stainless steel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100535168C (en) | 2009-09-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100535168C (en) | Method for producing hot-rolled ferritic stainless steel strip steel | |
| CN108906884B (en) | Low-temperature rolling production method of high-performance 20CrMnTi gear steel | |
| CN102605250B (en) | Vehicle steel plate and production method thereof | |
| CN100447280C (en) | Impact stage low carbon steel hot-rolled sheet and mfg. method thereof | |
| CN103008342B (en) | Production method of 5052-H32 aluminum alloy plate-strip | |
| CN109465295B (en) | Method for preventing edge cracking and strip breakage of hot continuous rolled steel plate in cold rolling | |
| CN100575527C (en) | A kind of thin belt continuous casting austenitic stainless steel belt and manufacture method thereof | |
| CN104928457A (en) | Method for producing high-ductility ferritic stainless steel band through furnace roll and continuous mill | |
| CN101147920A (en) | Hot rolled steel plate surface oxidation iron sheet control method for vanadium-containing automobile beam | |
| CN102304665A (en) | Steel plate for automobile and production method thereof | |
| CN102839322A (en) | Hot galvanizing steel plate for car and production method thereof | |
| CN113578961B (en) | Method for controlling shape of medium-high carbon steel in thin slab continuous casting and rolling production | |
| CN104531964A (en) | Production method of high performance duplex stainless steel hot rolled coil | |
| CN105177422A (en) | Ultra-long thin EH36 steel and production method of ultra-long thin EH36 steel on steckle mill | |
| CN103184386A (en) | Method for improving mechanical property of low-carbon silicomanganese series cold rolling dual-phase steel | |
| CN110814030B (en) | Heat-resistant composite stainless steel and hot rolling production process thereof | |
| CN102199734A (en) | High-strength 301L stainless steel used for bus, and manufacture method thereof | |
| CN106244916B (en) | High-quality Thin Specs hot rolled alloy tool steel and its CSP production technologies | |
| CN105734403A (en) | Hot-rolled coil for saw blade steel and production method of hot-rolled coil | |
| CN101805820A (en) | Prehardening treatment method of plastic mould steel | |
| CN1586752A (en) | Method for producing thin plate blank continuous casting and continuous rolling low carbon steel ferrite | |
| CN110157979B (en) | Rolling method for improving surface quality of steel plate | |
| CN113578963B (en) | Method for producing thin 45 steel by continuous casting and rolling production line | |
| CN113549744B (en) | Production method of high-silicon aluminum component steel plate | |
| CN103510015A (en) | Working roll of pickling and scale breaking tension leveler and its manufacturing process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090902 Termination date: 20170216 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |