CN101845593A - Steel for 20 control Cr nuclear power and production method thereof - Google Patents
Steel for 20 control Cr nuclear power and production method thereof Download PDFInfo
- Publication number
- CN101845593A CN101845593A CN 201010183484 CN201010183484A CN101845593A CN 101845593 A CN101845593 A CN 101845593A CN 201010183484 CN201010183484 CN 201010183484 CN 201010183484 A CN201010183484 A CN 201010183484A CN 101845593 A CN101845593 A CN 101845593A
- Authority
- CN
- China
- Prior art keywords
- steel
- percent
- temperature
- controlled
- nuclear power
- 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
Landscapes
- Heat Treatment Of Steel (AREA)
Abstract
The invention relates to steel for 20 control Cr nuclear power and a production method thereof. The steel comprises the following chemical components in percentage by weight: 0.17-0.25 percent of C, 0.4-1.0 percent of Mn, 0.18-0.25 percent of Si, 0.18-0.30 percent of Cr, not more than 0.005 percent of S, 0.020-0.040 percent of Alt, not more than 0.015 percent of P and the balance of Fe and inevitable impurities. The production method comprises the following steps of: pouring the designed and smelt molten steel according to the chemical components into a thick plate billet with 220-250mm; heating the plate billet in a heating furnace at the temperature of 1,150-1,250DEG C for 3-5h; discharging from the furnace and rolling at two stages; and carrying out the normalizing treatment. The produced product has the yield strength of 350MPa, the tensile strength of 480MPa, the elongation percentage of 25 percent, the high-temperature stretching yield strength of 250MPa, a transverse impact mean value at -30DEG C of 100J and favorable cold bending performance. The invention has the advantages of simplified work procedures, cost saving and favorable high-temperature stretching performance; and the product is applied to the nuclear power project and is steel for a nuclear power pipe fitting in the high-temperature turbulent state.
Description
Technical field
The invention belongs to the qualitative carbon steel technical field of control Cr, product adaptation is in the nuclear power pipe fitting steel under the turbulent state in nuclear power engineering.
Background technology
Along with gradually reducing of traditional Nonrenewable energy resources from now on, pay close attention to the utilization of nuclear energy in countries in the world.The nuclear power that is adapted to third generation nuclear power technology with the exploitation of steel become more and more important.Current to the pressing for of energy strategy deposit in view of China, research and development have the nuclear power Plate Steel of the excellent property of independent intellectual property right, and for improving China's energy system, stand-alone development nuclear energy resource, the assurance national energy security is significant.
Nuclear power is used for the feedwater and the extraction line of low pressure feed water heater system, feed-water deaerator system, condensed water extraction system, electronic main feedpump system with 20 control Cr pipelines.In nuclear power engineering; when pipe fitting is under the turbulent state; because of influencing each other of fluidic flow at high speed, temperature and chemical environment; promoted the dissolving of the zone of oxidation that the carbon steel and low alloy steel tube-surface shields; thereby cause corrosion failure, promptly produce so-called " corrosion of flowing and quickening " phenomenon.According to the data from abroad introduction, the corrosive erosion rate of quickening that flows in the carbon steel depends on: factors such as fluid temperature (F.T.), flow velocity, pH value, electropotential, alloying element, thermodynamics.Wherein the alloying element of tubing is that iron and steel enterprise can control.According to abroad to the correlation test result of " relatively reduction-steel in Cr% relation " research: Cr content is the main alloy element that influences its FAC in the carbon steel tubing.Along with the increase of Cr content in the steel, relatively reduction reduces, when Cr content near 0.20% the time, reduction drops to 0.1% relatively.Because nuclear power is higher to security requirement, and vapour generator is also higher to the requirement of feedwater, and therefore, all system pipelines relevant with feedwater all adopt the high quality carbon steel pipe of control Cr in the nuclear power engineering.Because 20 control Cr steel are used for the high places of level of security such as nuclear power conventional island, are used to carry high-temperature medium, therefore for the molten steel purity, steel plate low power, low-temperature flexibility, performances such as drawing by high temperature all have strict technical requirements.
20 control Cr nuclear powers are produced with the TMCP+ normalizing process with steel.Nuclear power has characteristics such as simplifying working process, save cost and delivery cycle weak point with steel, help reducing investment outlay, improving operating efficiency in building the nuclear power projects process, shorten the construction period.20 control Cr are higher to every index requests such as low-temperature flexibility, high temperature tensile properties.The technical indicators such as low-temperature flexibility, high temperature tensile properties and welding property that improve 20 control Cr are important research directions.
Summary of the invention
The object of the present invention is to provide a kind of 20 control Cr nuclear powers steel and production method thereof.Present 20 control Cr nuclear powers with the subject matter that steel and production technology thereof exist are: the fluctuation of the high temperature tensile properties of (1) as-normalized condition delivery; (2) steel plate macroscopic examination and Control and Inclusion Removal strictness.(3) low-temperature impact work problem on the low side appears easily.
For satisfying every performance requriements, adopt carbon, silicon, manganese to add the composition design of Cr, the interpolation that the composition design is upward passed through carbon, silicon, manganese is as main strengthening element, and the interpolation of Cr is in order to reduce the erosion rate of carbon steel mobile accelerated corrosion in the nuclear power generating equipment use; Lower P, S control is in order to guarantee the requirement of steel plate low-temperature flexibility.The center component segregation of control continuous casting steel billet such as is mingled with at defective in the smelting process, is easy to obtain the continuous casting steel billet of better quality, helps guaranteeing the heart portion quality of thicker specification nuclear power with steel plate, improves product percent of pass.
The present invention relates to a kind of 20 control Cr nuclear powers steel and production method thereof, it is characterized in that, chemical ingredients by weight percentage: C 0.17～0.25%, Mn 0.4～1.0%, and Si 0.18～0.25%, and Cr 0.18～0.30%, S≤0.005%, Alt 0.020～0.040%, P≤0.015%, and all the other are Fe and unavoidable impurities.
CEQ=C+Mn/6+Cr/5 is less than 0.40;
Produce the production method of 20 control Cr nuclear powers, adopt sheet billet continuous casting, heating, controlled rolling, normalizing process with steel; Processing step is:
(1) good molten steel casting becomes 220～250mm heavy slab will according to chemical composition to design smelting; With pack into bar plate heating stove heating of blank, 1150～1250 ℃ of Heating temperatures, heat-up time 3～5h; Come out of the stove then and be rolled;
(2) the roughing start rolling temperature is controlled at 1060～1160 ℃; Intermediate blank is treated temperature thickness 40～80mm; The finish rolling start rolling temperature is controlled at 850～950 ℃; Finishing temperature is controlled at 770～840 ℃:
(3) normalizing temperature is 900 ℃～950 ℃, and soaking time is controlled at 10 ± 5min.
Steel plate thickness range of the present invention is 10～40mm.
Beneficial effect of the present invention is: the product microtexture of explained hereafter of the present invention is ferrite+perlite, product possesses good comprehensive mechanical properties: yield strength 300～350MPa, tensile strength reaches 450～500MPa, unit elongation reaches 25%, drawing by high temperature yield strength 210～250MPa ,-30 ℃ of summers than impact absorbing energy vertical on average more than 100J, cold-bending property is good.
Embodiment
Embodiment 1
20 control Cr nuclear powers with steel design mix by weight percentage are: C 0.18%, Mn0.50%, and Si 0.19%, and Cr 0.20%, and S 0.003%, and Alt 0.035%, and P 0.008%, and all the other are Fe and unavoidable impurities.The steel plate specification is: 10 * 2040 * 12000mm (thickness * width * length).
TMCP technology comprises heating, roughing, finish rolling, normalizing, is specially:
(1) good molten steel casting becomes 220～250mm heavy slab will according to chemical composition to design smelting; With pack into bar plate heating stove heating of blank, 1180 ℃ of Heating temperatures, heat-up time 4h; Come out of the stove then and be rolled;
(2) the roughing start rolling temperature is controlled at 1060 ℃; Intermediate blank is treated temperature thickness 40mm; The finish rolling start rolling temperature is controlled at 880 ℃; Finishing temperature is controlled at 820 ℃;
(3) normalizing temperature is 910 ℃, and soaking time is controlled at 8min.
The product yield strength 330MPa that produces, tensile strength 480MPa, unit elongation 27%, drawing by high temperature yield strength 220MPa ,-30 ℃ of transverse impact averages are at 100J, and cold-bending property is good.
Embodiment 2
20 control Cr nuclear powers with steel design mix by weight percentage are: C 0.21%, Mn0.55%, and Si 0.20%, and Cr 0.21%, and S 0.003%, and Alt 0.035%, and P 0.008%, and all the other are Fe and unavoidable impurities.The steel plate specification is: 20 * 2170 * 12000mm (thickness * width * length)
TMCP technology comprises heating, roughing, finish rolling, normalizing, is specially:
(1) good molten steel casting becomes the 220mm heavy slab will according to chemical composition to design smelting; With pack into bar plate heating stove heating of blank, 1200 ℃ of Heating temperatures, heat-up time 4h; Come out of the stove then and be rolled;
(2) the roughing start rolling temperature is controlled at 1070 ℃; Intermediate blank is treated temperature thickness 45mm; The finish rolling start rolling temperature is controlled at 880 ℃; Finishing temperature is controlled at 830 ℃;
(3) normalizing temperature is 910 ℃, and soaking time is controlled at 10min.
The product yield strength 350MPa that produces, tensile strength 470MPa, unit elongation 25%, drawing by high temperature yield strength 230MPa ,-30 ℃ of transverse impact averages are at 100J, and cold-bending property is good.
Embodiment 3
20 control Cr nuclear powers with steel design mix by weight percentage are: C 0.20%, Mn0.50%, and Si 0.20%, and Cr 0.25%, and S 0.003%, and Alt 0.035%, and P 0.008%, and all the other are Fe and unavoidable impurities.The steel plate specification is: 22.2 * 2325 * 12000mm (thickness * width * length)
TMCP technology comprises heating, roughing, finish rolling, normalizing, is specially:
(1) good molten steel casting becomes the 250mm heavy slab will according to chemical composition to design smelting; With pack into bar plate heating stove heating of blank, 1210 ℃ of Heating temperatures, heat-up time 4h; Come out of the stove then and be rolled;
(2) the roughing start rolling temperature is controlled at 1100 ℃; Intermediate blank is treated temperature thickness 50mm; The finish rolling start rolling temperature is controlled at 870 ℃; Finishing temperature is controlled at 810 ℃;
(3) normalizing temperature is 910 ℃, and soaking time is controlled at 10min.
The product yield strength 350MPa that produces, tensile strength 480MPa, unit elongation 25%, drawing by high temperature yield strength 250MPa ,-30 ℃ of transverse impact averages are at 100J, and cold-bending property is good.
Claims (3)
1.20 control Cr nuclear power steel and production method thereof, it is characterized in that, chemical ingredients by weight percentage: C 0.17～0.25%, Mn 0.4～1.0%, and Si 0.18～0.25%, and Cr 0.18～0.30%, S≤0.005%, Alt 0.020～0.040%, P≤0.015%, and all the other are Fe and unavoidable impurities.
2. according to described 20 control Cr nuclear powers of claim 1 steel and production method thereof, it is characterized in that CEQ=C+Mn/6+Cr/5 is less than 0.40;
3. produce the production method of 20 control Cr nuclear powers as claimed in claim 1, it is characterized in that, adopt sheet billet continuous casting, heating, controlled rolling, normalizing process with steel; Processing step is:
(1) good molten steel casting becomes 220～250mm heavy slab will according to chemical composition to design smelting; With pack into bar plate heating stove heating of blank, 1150～1250 ℃ of Heating temperatures, heat-up time 3～5h; Come out of the stove then and be rolled;
(2) the roughing start rolling temperature is controlled at 1060～1160 ℃; Intermediate blank is treated temperature thickness 40～80mm; The finish rolling start rolling temperature is controlled at 850～950 ℃; Finishing temperature is controlled at 770～840 ℃;
(3) normalizing temperature is 900 ℃～950 ℃, and soaking time is controlled at 10 ± 5min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010183484 CN101845593A (en) | 2010-05-19 | 2010-05-19 | Steel for 20 control Cr nuclear power and production method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010183484 CN101845593A (en) | 2010-05-19 | 2010-05-19 | Steel for 20 control Cr nuclear power and production method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101845593A true CN101845593A (en) | 2010-09-29 |
Family
ID=42770409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010183484 Pending CN101845593A (en) | 2010-05-19 | 2010-05-19 | Steel for 20 control Cr nuclear power and production method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101845593A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104328244A (en) * | 2014-10-11 | 2015-02-04 | 天津大学 | Strong-magnetic-field refining method for preventing graphite structure from appearing on nuclear-power 20 Cr-controlled steel |
| CN104328272A (en) * | 2014-10-13 | 2015-02-04 | 天津大学 | Shot blasting treatment method for improving erosion corrosion resistance of Cr 20# seamless steel tubes |
| CN106734317A (en) * | 2016-12-02 | 2017-05-31 | 舞阳钢铁有限责任公司 | A kind of production method of control normalizing type thin specification steel plate template |
| CN112474825A (en) * | 2020-10-20 | 2021-03-12 | 山西太钢不锈钢股份有限公司 | Method for controlling surface cracks of 316LN nuclear power steel in rolling process |
| CN113604748A (en) * | 2021-08-18 | 2021-11-05 | 宝武集团鄂城钢铁有限公司 | Thick-specification weather-resistant corrosion-resistant Cr-series alloy steel plate and production method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5019189A (en) * | 1989-04-13 | 1991-05-28 | Kawasaki Steel Corporation | Steel pipe and a method for welding thereof and pipeline resistant to carbon dioxide corrosion |
| JPH0971837A (en) * | 1995-08-31 | 1997-03-18 | Nkk Corp | Electric resistance welded tube excellent in carbon dioxide resistance and its production |
| CN1367846A (en) * | 1999-07-31 | 2002-09-04 | 蒂森克虏伯钢铁(股份)公司 | High resistance steel band or sheet and method for production theirof |
| CN101177760A (en) * | 2007-11-27 | 2008-05-14 | 湖南华菱湘潭钢铁有限公司 | High-strength shipbuilding section and production method thereof |
| CN101358320A (en) * | 2008-09-02 | 2009-02-04 | 首钢总公司 | Steel for controlled rolling and controlled cooling platform and production method thereof |
| CN101528967A (en) * | 2006-10-30 | 2009-09-09 | 蒂森克虏伯钢铁股份公司 | Method for manufacturing flat steel products from a steel forming a martensitic structure |
-
2010
- 2010-05-19 CN CN 201010183484 patent/CN101845593A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5019189A (en) * | 1989-04-13 | 1991-05-28 | Kawasaki Steel Corporation | Steel pipe and a method for welding thereof and pipeline resistant to carbon dioxide corrosion |
| JPH0971837A (en) * | 1995-08-31 | 1997-03-18 | Nkk Corp | Electric resistance welded tube excellent in carbon dioxide resistance and its production |
| CN1367846A (en) * | 1999-07-31 | 2002-09-04 | 蒂森克虏伯钢铁(股份)公司 | High resistance steel band or sheet and method for production theirof |
| CN101528967A (en) * | 2006-10-30 | 2009-09-09 | 蒂森克虏伯钢铁股份公司 | Method for manufacturing flat steel products from a steel forming a martensitic structure |
| CN101177760A (en) * | 2007-11-27 | 2008-05-14 | 湖南华菱湘潭钢铁有限公司 | High-strength shipbuilding section and production method thereof |
| CN101358320A (en) * | 2008-09-02 | 2009-02-04 | 首钢总公司 | Steel for controlled rolling and controlled cooling platform and production method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 《核动力工程》 20030630 周剑秋 含人工穿透裂纹20碳钢管道抗弯矩能力试验研究 268-271 1-3 第24卷, 第3期 2 * |
| 《核科学与工程》 20010605 唐炯然 流速加速腐蚀引起的碳钢管壁减薄 全文 1-3 第21卷, 第2期 2 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104328244A (en) * | 2014-10-11 | 2015-02-04 | 天津大学 | Strong-magnetic-field refining method for preventing graphite structure from appearing on nuclear-power 20 Cr-controlled steel |
| CN104328272A (en) * | 2014-10-13 | 2015-02-04 | 天津大学 | Shot blasting treatment method for improving erosion corrosion resistance of Cr 20# seamless steel tubes |
| CN106734317A (en) * | 2016-12-02 | 2017-05-31 | 舞阳钢铁有限责任公司 | A kind of production method of control normalizing type thin specification steel plate template |
| CN112474825A (en) * | 2020-10-20 | 2021-03-12 | 山西太钢不锈钢股份有限公司 | Method for controlling surface cracks of 316LN nuclear power steel in rolling process |
| CN112474825B (en) * | 2020-10-20 | 2022-04-12 | 山西太钢不锈钢股份有限公司 | Method for controlling surface cracks of 316LN nuclear power steel in rolling process |
| CN113604748A (en) * | 2021-08-18 | 2021-11-05 | 宝武集团鄂城钢铁有限公司 | Thick-specification weather-resistant corrosion-resistant Cr-series alloy steel plate and production method thereof |
| CN113604748B (en) * | 2021-08-18 | 2022-05-13 | 宝武集团鄂城钢铁有限公司 | Thick-specification weather-resistant corrosion-resistant Cr alloy steel plate and production method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109468530B (en) | Hot-rolled wire rod for galvanized steel wire of bridge cable rope with over 2000MPa level and production method | |
| CN101358320B (en) | Steel for controlled rolling and controlled cooling platform and production method thereof | |
| CN103031498B (en) | Manufacture method of extremely thick ocean engineering steel plate with low compression ratio and super high-strength strain age | |
| CN103436784B (en) | Steel plate for offshore platform and preparation method thereof | |
| CN106319380A (en) | Low compression ratio 690MPa grade extra thick steel plate and production method thereof | |
| CN102719757B (en) | Nickel-free high-toughness 80kg-grade high-strength steel and manufacturing method thereof | |
| CN104561824A (en) | Nuclear class equipment supporting steel and production method thereof | |
| CN101654760B (en) | Unalloyed structural steel S355J2 steel plate and production method thereof | |
| CN101845599A (en) | Weathering steel and manufacturing method thereof | |
| CN109957730A (en) | A kind of high-ductility heavy wall deep-sea pipeline plate and its production method | |
| CN103160732A (en) | Steel for nuclear power pressure-bearing equipment and manufacturing method thereof | |
| CN106521319A (en) | Super-thick EH36 steel for offshore wind power pipe pile and preparation method thereof | |
| CN103667947B (en) | Without the stainless manufacturing process of nickel Austriaization body | |
| CN102605241A (en) | Normalizing type 16MnDR low temperature pressure vessel steel plate and manufacturing method thereof | |
| CN111926253B (en) | Hydrogen sulfide corrosion resistant high-strength toughness normalized steel and manufacturing method thereof | |
| CN103305768A (en) | Steel for low-carbon equivalent seawater corrosion resisting ocean platform rack and production method of steel | |
| CN107988548B (en) | A kind of X80 Pipeline Steel Plate and its production method adapting to low temperature Naked dew environment | |
| CN101845593A (en) | Steel for 20 control Cr nuclear power and production method thereof | |
| CN101948982A (en) | Steel plate for guide blades of large hydropower generating units and production method thereof | |
| CN104831167A (en) | Q550E high-strength steel hot rolled coil and production method thereof | |
| CN110358973A (en) | A kind of low cost S 420NL low-temperature flexibility steel plate and manufacturing method | |
| CN104073731B (en) | Production method for ultrahigh-strength ship plate adopting direct quenching process | |
| CN113652607A (en) | 1000 MPa-grade quenched and tempered steel plate for hydroelectric power generation and production method thereof | |
| CN110218952B (en) | Finish-rolled twisted steel and production method thereof | |
| CN103014520A (en) | F+P+B type low-yield-ratio and high-strength medium steel plate and production method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: QINHUANGDAO SHOUQIN METAL MATERIAL CO., LTD. |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Jiading Inventor after: He Yuanchun Inventor after: Liu Jingang Inventor after: Li Shaopo Inventor after: Cha Chunhe Inventor after: Ding Wenhua Inventor after: Zhang Yuefei Inventor after: Liu Yinliang Inventor after: Zheng Huiping Inventor after: Jiang Zhongxing Inventor after: Bai Xuejun Inventor after: Sui Helong Inventor after: Wang Genji Inventor after: Zhang Xuefeng Inventor after: Li Zhanjun Inventor after: Wang Wenjun Inventor before: Li Jiading Inventor before: Zhang Xuefeng Inventor before: Bai Xuejun Inventor before: Liu Yinliang Inventor before: Sui Helong Inventor before: Jiang Zhongxing Inventor before: Wang Wenjun Inventor before: Li Zhanjun Inventor before: Zheng Huiping Inventor before: Li Shaopo Inventor before: Cha Chunhe Inventor before: Ding Wenhua |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: LI JIADING SUI HELONG JIANG ZHONGXING WANG WENJUN LI ZHANJUN ZHENG HUIPINGLI SHAOPO ZHA CHUNHE DING WENHUA ZHANG XUEFENG BAI XUEJUN LIU YINLIANG TO: LI JIADING ZHENG HUIPING JIANG ZHONGXING BAI XUEJUN SUI HELONG WANG GENJI ZHANG XUEFENG LI ZHANJUN WANG WENJUN HE YUANCHUN LIU JINGANG LI SHAOPO ZHA CHUNHE DING WENHUA ZHANG YUEFEI LIU YINLIANG |
|
| TA01 | Transfer of patent application right |
Effective date of registration: 20101020 Address after: 100041 Shijingshan Road, Beijing, No. 68, No. Applicant after: Capital Iron & Steel General Company Co-applicant after: Qinhuangdao Shouqin Metal Material Co., Ltd. Address before: 100041 Shijingshan Road, Beijing, No. 68, No. Applicant before: Capital Iron & Steel General Company |
|
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100929 |