CN101358319B - Low carbonaceous steel plate for 610MPa grade high strength pressure vessels and production method thereof - Google Patents
Low carbonaceous steel plate for 610MPa grade high strength pressure vessels and production method thereof Download PDFInfo
- Publication number
- CN101358319B CN101358319B CN2008101195020A CN200810119502A CN101358319B CN 101358319 B CN101358319 B CN 101358319B CN 2008101195020 A CN2008101195020 A CN 2008101195020A CN 200810119502 A CN200810119502 A CN 200810119502A CN 101358319 B CN101358319 B CN 101358319B
- Authority
- CN
- China
- Prior art keywords
- percent
- rolling
- steel sheet
- steel plate
- production method
- 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.)
- Expired - Fee Related
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 34
- 239000010959 steel Substances 0.000 title claims abstract description 34
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 238000005096 rolling process Methods 0.000 claims abstract description 26
- 229910001563 bainite Inorganic materials 0.000 claims abstract description 8
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 8
- 238000001816 cooling Methods 0.000 claims abstract description 6
- 239000000126 substance Substances 0.000 claims abstract description 6
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 3
- 229910052759 nickel Inorganic materials 0.000 claims abstract 2
- 238000005516 engineering process Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 11
- 238000001953 recrystallisation Methods 0.000 claims description 9
- 229910001566 austenite Inorganic materials 0.000 claims description 8
- 238000005496 tempering Methods 0.000 claims description 8
- 239000004615 ingredient Substances 0.000 claims description 5
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 2
- 229910052720 vanadium Inorganic materials 0.000 claims description 2
- 238000003466 welding Methods 0.000 abstract description 3
- 229910000859 α-Fe Inorganic materials 0.000 abstract description 3
- 239000000956 alloy Substances 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 abstract 1
- 229910052804 chromium Inorganic materials 0.000 abstract 1
- 229910052802 copper Inorganic materials 0.000 abstract 1
- 229910052748 manganese Inorganic materials 0.000 abstract 1
- 230000008569 process Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 4
- RMLPZKRPSQVRAB-UHFFFAOYSA-N tris(3-methylphenyl) phosphate Chemical compound CC1=CC=CC(OP(=O)(OC=2C=C(C)C=CC=2)OC=2C=C(C)C=CC=2)=C1 RMLPZKRPSQVRAB-UHFFFAOYSA-N 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910000734 martensite Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000009377 nuclear transmutation Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000000930 thermomechanical effect Effects 0.000 description 1
Images
Landscapes
- Heat Treatment Of Steel (AREA)
Abstract
The invention relates to a steel sheet used for low-carbon Grade 610MPa high-strength pressure containers, and a production method thereof. The invention belongs to the technical field of low-alloy wide heavy plates. Chemical components in the mass percent are as follows: 0.05 percent to 0.09 percent of C, 0.25 percent to 0.45 percent of Si, 1.20 percent to 1.40 percent of Mn, 0.035 percent to 0.045 percent of Nb, 0.010 percent to 0.020 percent of Ti, 0.20 percent to 0.30 percent of Cu, 0.25 percent to 0.55 percent of Cr, 0.25 percent to 0.30 percent of Ni, and the rest is Fe; the thickness of the steel sheet is 10mm to 50mm; the micro tissue of the steel sheet is ferrite + bainite tissue, and the grain size is 9.5 to 11. The steel sheet is prepared through controlled rolling and cooling. The production method has the advantages that the produced steel produced steel sheet has greatly improved integrated performance than conventional steel sheets with the same strength grade: the yield stress can be stabilized to be above 460MPa, the tensile strength is stabilized to be above 570MPs, and toughness of the steel sheet at 40 DEG C below zero of low temperature reaches above 100J, and the welding adaptability of the steel sheet is excellent.
Description
Technical field
The invention belongs to the steel plate of pressure vessel production technical field, a kind of low-carbon (LC) 610MPa grade high strength pressure vessels steel plate and production method thereof particularly are provided.Mainly utilize the TMCP+ tempering process to make 610MPa grade pressure vessels steel, to replace traditional 610MPa grade pressure vessels steel that back off-line quenching+temper is produced that rolls.
Background technology
Home-made 610MPa grade high strength pressure vessels plate is to adopt traditional quenching-and-tempering process, and the technological process of production is long, energy consumption is big, the high theory that does not meet modern energy conservation and emission reduction of production cost.Prior heat treatment process steel plate microtexture is based on tempered sorbite, and utilizes steel plate that deformation effect produces based on middle temperature transformation product bainite, after the tempering still based on bainite.
Along with society and expanding economy, the pressure of the saving resource that Iron And Steel Industry faced, save energy, protection environment is increasing.So, traditional ferrous materials is adopted special complete processing, increase substantially its performance, increase the service life, improve the utilization ratio and the rate of recovery of resource effectively, become the focus of ferrous materials research field.Adopt TMCP technology to make the 610MPa grade pressure vessels and can save traditional postheat treatment technology of rolling, shortened process, reduced energy consumption and saved production cost with steel, significant for the Sustainable development of China's economy.
Summary of the invention
The object of the present invention is to provide a kind of low-carbon (LC) 610MPa grade high strength pressure vessels steel plate and production method thereof, has good tough coupling by the processing parameter production that changes in the thermal deformation process, make yield strength greater than 490MPa, tensile strength is more than 610MPa, unit elongation has the High Strength Steel Plate of good low temperature impact property and welding property simultaneously more than 17%.The tissue of its product contains a spot of ferrite and martensite simultaneously based on bainite.
Low-carbon (LC) 610MPa grade high strength pressure vessels of the present invention with the chemical ingredients (weight %) of steel plate is: C0.08-0.15%, Si0.15-0.40%, Mn1.20-1.60%, P＜0.01%,, S＜0.01%, Ni0.15-0.40%, Mo0.1-0.30%, V0.02-0.06%, microalloy element Ti0.01-0.03%, Nb0.01-0.06%, surplus is Fe; The metallographic structure of steel plate is the mixed structure of tempering bainite and tempered sorbite.
Production technique of the present invention is as follows:
(1) rolling technology: heat 1150-1250 ℃; In the austenite recrystallization district, non-recrystallization district and the controlled rolling of deformation induced phase change zone, 1000-1150 ℃ of roughing open rolling, 950-1050 ℃ of roughing finish to gauge; Intermediate blank thickness is 2-2.5 times of finished product thickness, 850-900 ℃ of finish rolling open rolling, 780-820 ℃ of finish rolling finish to gauge;
(2) roll postcooling technology: speed of cooling 15-25 ℃/s, final cooling temperature is at 600-650 ℃;
(3) carry out 600-700 ℃ of tempering after rolling, obtain the mixed structure of tempering bainite and tempered sorbite.
It is in proof strength that the C content of steel of the present invention is controlled at 0.09-0.10%, avoids the infringement of C content raising to plasticity, toughness and weldability.Adding Nb is in order suitably to enlarge the scope in austenite non-recrystallization district, to make full use of the controlled rolling of austenite non-recrystallization and to roll the back controlled chilling.
Adopt the foundation of this TMCP (hot mechanical controlled rolling) technology to be: by the austenite recrystallization controlled rolling of high-temperature zone, abundant refine austenite crystal grain; Control finish rolling start rolling temperature makes it in the distortion of austenite non-recrystallization district, increases the distortion in austenite non-recrystallization district, and the finish rolling finishing temperature is controlled at 780-820 ℃, makes and produces a small amount of deformation induced ferrite in the operation of rolling; Obtain bainite and a spot of martensitic stucture by rolling the quick cooling in back.
Utilize deformation effect explained hereafter 610MPa grade pressure vessels as follows with the steel plate characteristics:
1, armor plate strength satisfies the requirement of 610MPa intensity rank;
2, through after SR (eliminating stress) processing, because the precipitation strength effect of Nb, Ti, V carbide, the mechanical property of steel changes very little;
3, steel grade newly developed has good welding property, because carbon equivalent and Pcm value are low, can weld without preheating, is applicable to that the pressurized vessel that low temperature is on active service uses.
The invention has the advantages that, controlled deformation amount, texturing temperature and cooling temperature in the whole thermo-mechanical deformation of steel plate, control the structural transformation and the transmutation product of steel plate with this, the solid solution of microalloy element in steel in addition, separate out in the thermodynamic process also inequalityly, its corresponding strengthening and toughening mechanism of also changes.The tank plate that the deformation effect technology use to be produced has good comprehensive mechanical properties can save traditional back quenching heat treatment technology of rolling, and has shortened technical process, has reduced energy consumption and saved production cost.
Description of drawings
Accompanying drawing 1 is the metallographic structure of embodiment.
Embodiment
Embodiment
The chemical ingredients scope of 610MPa steel is smelted on the 150kg vacuum induction furnace according to the present invention, and is swaged into the steel billet of 100mm * 120mm * 150mm, and is rolling on 450 milling trains, after 620 ℃ of temper.Chemical ingredients is as shown in table 1, and TMCP technology is as shown in table 2, and mechanical property is as shown in table 3, and metallographic structure as shown in Figure 1.
The chemical ingredients of the ultra-fine crystal zone of table 1 embodiment steel (weight, %)
Table 2TMCP process system
Claims (1)
1. a low-carbon (LC) 610MPa grade high strength pressure vessels is characterized in that production technique is with the production method of steel plate:
(1) rolling technology: heat 1150-1250 ℃; In the austenite recrystallization district, non-recrystallization district and the controlled rolling of deformation induced phase change zone, 1000-1150 ℃ of roughing open rolling, 950-1050 ℃ of roughing finish to gauge; Intermediate blank thickness is 2-2.5 times of finished product thickness, 850-900 ℃ of finish rolling open rolling, 780-820 ℃ of finish rolling finish to gauge;
(2) roll postcooling technology: speed of cooling 15-25 ℃/s, cold 600～650 ℃ eventually;
(3) carry out 600-700 ℃ of tempering after rolling, obtain the mixed structure of tempering bainite and tempered sorbite;
The chemical ingredients of described steel plate is: C 0.08-0.15%, Si 0.15-0.40%, Mn1.20-1.60%, P＜0.01%,, S＜0.01%, Ni 0.15-0.40%, Mo 0.1-0.30%, V 0.02-0.06%, microalloy element Ti 0.01-0.03%, Nb 0.01-0.06%, surplus is Fe; All be weight percentage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101195020A CN101358319B (en) | 2008-09-02 | 2008-09-02 | Low carbonaceous steel plate for 610MPa grade high strength pressure vessels and production method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101195020A CN101358319B (en) | 2008-09-02 | 2008-09-02 | Low carbonaceous steel plate for 610MPa grade high strength pressure vessels and production method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101358319A CN101358319A (en) | 2009-02-04 |
| CN101358319B true CN101358319B (en) | 2010-12-01 |
Family
ID=40330916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101195020A Expired - Fee Related CN101358319B (en) | 2008-09-02 | 2008-09-02 | Low carbonaceous steel plate for 610MPa grade high strength pressure vessels and production method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101358319B (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101565796B (en) * | 2009-06-05 | 2011-10-05 | 武汉钢铁(集团)公司 | Sheet steel with tensile strength of 570Mpa for elbow pipe and production method thereof |
| CN101613828B (en) * | 2009-07-16 | 2011-05-18 | 首钢总公司 | Super-thick steel plate for low yield ratio buildings with 460 MPa grade yield strength and manufacturing method |
| CN102021492B (en) * | 2009-09-15 | 2012-11-28 | 鞍钢股份有限公司 | Low-carbon low-alloy abrasion-resistant steel and production method thereof |
| CN101805819B (en) * | 2010-04-22 | 2011-09-28 | 山西太钢不锈钢股份有限公司 | Hardening and tempering method of thick steel plates for pressure container |
| CN101892373A (en) * | 2010-06-25 | 2010-11-24 | 南京钢铁股份有限公司 | Heat treatment technology for low-temperature high impact toughness medium-thickness steel plate |
| CN104480384A (en) * | 2014-11-29 | 2015-04-01 | 首钢总公司 | Steel plate for 510MPa-grade hydrogen induced cracking resistant pressure vessel and production method of steel plate |
| CN104745787B (en) * | 2015-04-14 | 2017-03-22 | 武汉钢铁(集团)公司 | Production method of tool steel capable of being directly cold rolled |
| CN104862616B (en) * | 2015-04-28 | 2016-08-17 | 江阴兴澄特种钢铁有限公司 | A kind of big thickness high tenacity tank plate and manufacture method thereof |
| CN105568137B (en) * | 2016-01-25 | 2017-12-08 | 北京科技大学 | A kind of low-carbon Ti Mo microalloyings steelss for pressure vessel use and its manufacture method |
| CN106521358B (en) * | 2016-09-30 | 2018-07-06 | 秦皇岛首秦金属材料有限公司 | A kind of production method of tensile strength 800MPa water power steel |
| KR101998991B1 (en) * | 2017-12-15 | 2019-07-10 | 주식회사 포스코 | Steel plate for pressure vessel having excellent tensile strength and low temperature impact toughness and method of manufacturing the same |
| WO2020250735A1 (en) * | 2019-06-14 | 2020-12-17 | Ｊｆｅスチール株式会社 | High-strength hot-rolled steel sheet and method for manufacturing same |
| CN111621708B (en) * | 2020-06-30 | 2021-09-24 | 南阳汉冶特钢有限公司 | Novel steel plate with impact toughness higher than P690QL2 steel plate for LPG ship storage tank and production method thereof |
| CN112251569A (en) * | 2020-09-11 | 2021-01-22 | 南京钢铁股份有限公司 | Method for improving yield strength of Q460 grade high-strength steel plate |
-
2008
- 2008-09-02 CN CN2008101195020A patent/CN101358319B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101358319A (en) | 2009-02-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101358319B (en) | Low carbonaceous steel plate for 610MPa grade high strength pressure vessels and production method thereof | |
| CN101613828B (en) | Super-thick steel plate for low yield ratio buildings with 460 MPa grade yield strength and manufacturing method | |
| CN100455692C (en) | High-strength weathering steel and method of manufacturing same | |
| WO2016045266A1 (en) | High-toughness hot-rolling high-strength steel with yield strength of 800 mpa, and preparation method thereof | |
| CN102644030B (en) | Cryogenic steel of which yield strength is 800 MPa class and production method thereof | |
| CN102877007B (en) | Steel plate for low-crack sensitivity pressure container with thickness being more than or equal to 80mm and manufacture method of steel plate | |
| CN102876999B (en) | Steel plate for hardening and tempering type low temperature pressure vessel and method for producing steel plate | |
| CN108624809B (en) | Ultrahigh-strength steel plate with excellent seawater corrosion resistance, fatigue resistance and environmental brittleness resistance and manufacturing method thereof | |
| CN104674110B (en) | A kind of pressure vessel low-temperature steel plate and production method thereof | |
| CN102719757B (en) | Nickel-free high-toughness 80kg-grade high-strength steel and manufacturing method thereof | |
| CN103468905B (en) | A kind of 485MPa level line steel hot rolling roll bending and manufacture method thereof | |
| CN102703824A (en) | Non hardened and tempered state hot-rolled steel strip with yield strength higher than 900MPa and preparation method thereof | |
| CN101906591B (en) | Ultra high strength ship plate steel and production method thereof | |
| CN104372257A (en) | Low-alloy high-strength middle-thickness plate capable of utilizing self-tempering waste heat to improve toughness and preparation method of low-alloy high-strength middle-thickness plate | |
| CN103160746A (en) | High strength steel for thick wall water pipe and manufacturing method thereof | |
| CN102851589A (en) | Steel for low temperature structure with low yield ratio and capable of performing ultrahigh heat input and manufacture method thereof | |
| CN105603322A (en) | Steel plate with super-low cost, 800MPa-grade high toughness and excellent weldability and manufacture method thereof | |
| CN108085591A (en) | A kind of steel plate HTNM400 and its production method with low-welding crack-sensitive energy | |
| CN103498103B (en) | A kind of high-hardenability major diameter 65MnCr abrading-ball and preparation method thereof | |
| CN103045965A (en) | Technique for manufacturing steel plate for 600MPa hydropower steel penstock | |
| CN102191430A (en) | Easy welding steel plate with yield strength of 550MPa and high toughness and manufacturing method thereof | |
| CN106319388A (en) | 80 kg-level low preheating type high-strength steel plate and manufacturing method thereof | |
| CN101451217A (en) | Steel for pipeline and method for producing the same | |
| CN101353759A (en) | Low crack sensitivity steel plate having 550Mpa grade of yield strength and manufacturing method thereof | |
| CN102851611B (en) | Ultrahigh toughness steel plate for deep-water pressure resistant shell and manufacture 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 | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100041 Shijingshan Road, Shijingshan District, Shijingshan District, Beijing Co-patentee after: QINHUANGDAO SHOUQIN METAL MATERIAL Co.,Ltd. Patentee after: SHOUGANG GROUP Co.,Ltd. Address before: 100041 Shijingshan Road, Shijingshan District, Shijingshan District, Beijing Co-patentee before: QINHUANGDAO SHOUQIN METAL MATERIAL Co.,Ltd. Patentee before: SHOUGANG Corp. |
|
| CP01 | Change in the name or title of a patent holder | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190409 Address after: 100041 Shijingshan Road, Shijingshan District, Shijingshan District, Beijing Patentee after: SHOUGANG GROUP Co.,Ltd. Address before: 100041 Shijingshan Road, Shijingshan District, Shijingshan District, Beijing Co-patentee before: QINHUANGDAO SHOUQIN METAL MATERIAL Co.,Ltd. Patentee before: SHOUGANG GROUP Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101201 |