CN103194679B - Steel plate for structure with excellent marine atmospheric corrosion resistance and production method thereof - Google Patents
Steel plate for structure with excellent marine atmospheric corrosion resistance and production method thereof Download PDFInfo
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- CN103194679B CN103194679B CN201310115964.6A CN201310115964A CN103194679B CN 103194679 B CN103194679 B CN 103194679B CN 201310115964 A CN201310115964 A CN 201310115964A CN 103194679 B CN103194679 B CN 103194679B
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Abstract
The invention discloses a steel plate for structure with excellent marine atmospheric corrosion resistance and a production method thereof. The steel plate comprises the chemical ingredients by weight percent: 0.001-0.08% of C, 0.10-0.50% of Si, 0.50-1.60% of Mn, 0.080% or less of P, 0.025% or less of S, 0.01-3.50% of Ni, 0.01-0.50% of Mo, 0.01-1.20% of Cu, 0.001-0.060% of Nb, 0.0005-0.0040% of Ca, 0.010-0.080% of Al, 0.0080% or less of N, the balance of Fe and inevitable impurities. A controlled rolling and cooling process is adopted; the heating temperature of a continuous casting billet before rolling is 1100-1250 DEG C; the roughing end temperature is 990-1080 DEG C; the finishing rolling temperature is 850-970 DEG C; laminar cooling is adopted after rolling; the final rolling temperature is 250-750 DEG C; and the cooling speed is 5-40 DEG C/s. The situation that a steel ball has excellent resistance to the marine-atmosphere environment by low carbon and alloy ingredient is ensured.
Description
Technical field
The invention belongs to field of metallurgy, relate to a kind of atmospheric marine environment corrosion-resistant steel, specifically a kind of Structural Steel Plate and production method thereof with excellent anti-sea atmosphere corrosion.
Background technology
Along with the development that Chinese society doctrine is built, the demand of ocean and coastal region steel can be increasing." country's " 12 " ocean science and technical development plan outline " proposes, " 12 " period, ocean science will rise to 60% by 54.5% of Eleventh Five-Year Plan period to the contribution rate of marine economy, and the development of Ocean Development Technology must increase ocean and coastal region steel.And at coastal region, owing to containing more salinity in marine atmosphere, common weathering steel there will be rusty scale and peels off, weathering resistance reduces.Therefore, coastal region needs to adopt the better weathering steel of weather resistance.At coastal region, the cost that ordinary steel adds first coating is just suitable with weathering steel, the then increase in time and increasing of maintenance coatings cost.Also do not have the Structural Steel Plate of satisfactory anti-sea atmosphere corrosion at present, thus, the Structural Steel Plate application prospect of the anti-sea atmosphere corrosion of coastal region is more considerable.
Summary of the invention
In order to improve the anti-sea atmosphere corrosion performance of steel plate, the object of this invention is to provide a kind of structural steel plate producing process with excellent anti-sea atmosphere corrosion, this steel plate is under marine atmosphere eroded environment, have the excellent resistivity for general corrosion and local corrosion, by adopting low-carbon (LC) and alloying ingredients to ensure, steel grade has the corrosion resistance nature of excellence in the present invention simultaneously.
The object of the invention is to be achieved through the following technical solutions:
There is a Structural Steel Plate for excellent anti-sea atmosphere corrosion, it is characterized in that: the chemical composition of this steel plate is by weight percentage, C 0.001 ~ 0.08%, Si 0.10 ~ 0.50%, Mn 0.50 ~ 1.60%, P≤0.080%, S≤0.025%, Ni 0.01 ~ 3.50%, Mo 0.01 ~ 0.50%, Cu 0.01 ~ 1.20%, Nb 0.001 ~ 0.060%, Ca 0.0005 ~ 0.0040%, Al 0.010 ~ 0.080%, N≤0.0080%, surplus is Fe and inevitable impurity.
In order to improve anti-sea atmosphere corrosion performance further, in the present invention, this steel plate is also containing one or more the element selected from following group of (1) ~ (2) at least one group:
(1) one or more the element of Cr 0.01 ~ 5.50%, RE 0.001 ~ 0.080%, Sb 0.005 ~ 0.10%.
(2) one or both of Ti 0.001 ~ 0.09%, V 0.001 ~ 0.080%.
A kind of production method with the Structural Steel Plate of excellent anti-sea atmosphere corrosion, it is characterized in that: this production method comprises cooling controlling and rolling controlling process (TMCP), in cooling controlling and rolling controlling process, roll front continuous blank heating temperature between 1100 DEG C ~ 1250 DEG C, roughing finishing temperature 990 ~ 1080 DEG C, finish rolling start rolling temperature 850 ~ 970 DEG C; Roll rear employing section cooling, final cooling temperature 250 ~ 750 DEG C, speed of cooling 5 ~ 40 DEG C/s.
By adopting low-carbon (LC) and alloying ingredients to ensure, steel grade has excellent corrosion resistance nature in the present invention.The steel plate obtained, under marine atmosphere eroded environment, has the excellent resistivity for general corrosion and local corrosion simultaneously.The present invention is applicable to coastal region, has excellent resistivity to atmospheric marine environment.
Embodiment
embodiment 1
The atmospheric marine environment of the present embodiment comprises following moiety by weight percentage with anti-corrosion steel plate: C:0.04%, Si:0.20%, Mn:1.30%, P:0.080%, S:0.0020%, Ni:3.20%, Mo:0.10%, Cu:0.35%, Nb:0.060%, Ca:0.0010%, Alt:0.021%, N:0.0045%, all the other are iron and inevitable impurity.
The production method of the atmospheric marine environment anti-corrosion steel plate of the present embodiment, this production method comprises cooling controlling and rolling controlling process.Utilize Steckel mill production line or Heavy Plate Production line to produce, comprise converter or electrosmelting operation, external refining operation, vacuum-treat operation, continuous casting working procedure, controlled rolling operation and controlled cooling model operation; Roll front continuous blank heating temperature 1200 DEG C; In controlled rolling operation, roughing finishing temperature: 1080 DEG C, finish rolling start rolling temperature: 940 DEG C; In controlled cooling model operation, final cooling temperature: 750 DEG C, speed of cooling: 5 DEG C/s.
embodiment 2
The atmospheric marine environment anti-corrosion steel plate of the present embodiment comprises following moiety by weight percentage: C:0.06%, Si:0.25%, Mn:1.10%, P:0.010%, S:0.0060%, Ni:0.08%, Mo:0.20%, Cu:0.15%, Cr:5.50%, Nb:0.007%, RE:0.030%, Ca:0.0015%, Alt:0.043%, N:0.0035%, all the other are iron and inevitable impurity;
The production technique of the atmospheric marine environment anti-corrosion steel plate of the present embodiment, utilize Steckel mill production line or Heavy Plate Production line to produce, comprise converter or electrosmelting operation, external refining operation, vacuum-treat operation, continuous casting working procedure, controlled rolling operation and controlled cooling model operation; Roll front continuous blank heating temperature: 1180 DEG C; In controlled rolling operation, roughing finishing temperature: 1070 DEG C, finish rolling start rolling temperature: 860 DEG C; In controlled cooling model operation, final cooling temperature: 630 DEG C, speed of cooling: 10 DEG C/s.
embodiment 3
The atmospheric marine environment anti-corrosion steel plate of the present embodiment comprises following moiety by weight percentage:
C:0.08%, Si:0.40%, Mn:0.60%, P:0.030%, S:0.010%, Ni:0.75%, Cu:1.20%, Mo:0.50%, Cr:0.55%, Nb:0.020%, Ti:0.080%, V:0.020%, Sb:0.10%, Ca:0.0030%, Alt:0.031%, N:0.0065%, all the other are iron and inevitable impurity;
The production technique of the atmospheric marine environment anti-corrosion steel plate of the present embodiment, utilize Steckel mill production line or Heavy Plate Production line to produce, comprise converter or electrosmelting operation, external refining operation, vacuum-treat operation, continuous casting working procedure, controlled rolling operation and controlled cooling model operation; Roll front continuous blank heating temperature: 1150 DEG C; In controlled rolling operation, roughing finishing temperature: 1030 DEG C, finish rolling start rolling temperature: 900 DEG C; In controlled cooling model operation, final cooling temperature: 510 DEG C, speed of cooling: 25 DEG C/s.
The steel plate of embodiment 1-3 has excellent resistivity to atmospheric marine environment, and under laboratory simulation strand air Service Environment week leaching accelerated corrosion test condition, the steel plate corrosion ability of embodiment 1-3 is 3.0 ~ 3.5 times of common Bridge Steel Q420q.
Claims (2)
1. there is a Structural Steel Plate for excellent anti-sea atmosphere corrosion, it is characterized in that: the chemical composition of this steel plate is by weight percentage, C 0.001 ~ 0.08%, Si 0.10 ~ 0.50%, Mn 0.50 ~ 1.60%, P≤0.080%, S≤0.025%, Ni 0.01 ~ 3.50%, Mo 0.01 ~ 0.50%, Cu 0.01 ~ 1.20%, Nb 0.001 ~ 0.060%, Ca 0.0005 ~ 0.0040%, Al 0.010 ~ 0.080%, N≤0.0080%, surplus is Fe and inevitable impurity; This steel plate is also containing one or more the element selected from following group of (1) ~ (2) at least one group:
(1) one or more the element of Cr 0.01 ~ 5.50%, RE 0.001 ~ 0.080%, Sb 0.005 ~ 0.10%;
(2) one or both of Ti 0.001 ~ 0.090%, V 0.001 ~ 0.080%.
2. there is described in a claim 1 production method of the Structural Steel Plate of excellent anti-sea atmosphere corrosion, it is characterized in that: this production method comprises cooling controlling and rolling controlling process, in cooling controlling and rolling controlling process, roll front continuous blank heating temperature between 1100 DEG C ~ 1250 DEG C, roughing finishing temperature 990 ~ 1080 DEG C, finish rolling start rolling temperature 850 ~ 970 DEG C; Roll rear employing section cooling, final cooling temperature 250 ~ 750 DEG C, speed of cooling 5 ~ 40 DEG C/s.
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| CN201310115964.6A CN103194679B (en) | 2013-04-07 | 2013-04-07 | Steel plate for structure with excellent marine atmospheric corrosion resistance and production method thereof |
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| CN201310115964.6A CN103194679B (en) | 2013-04-07 | 2013-04-07 | Steel plate for structure with excellent marine atmospheric corrosion resistance and production method thereof |
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| CN103194679B true CN103194679B (en) | 2015-01-21 |
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| CN103451537B (en) * | 2013-08-16 | 2016-04-27 | 江苏省沙钢钢铁研究院有限公司 | Low-temperature weather-resistant steel plate with high welding performance and production method thereof |
| CN103421941A (en) * | 2013-08-19 | 2013-12-04 | 南京钢铁股份有限公司 | Thermal treatment method for improving corrosion resistance of steel plate for marine-atmospheric-corrosion-resistant structure |
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| CN106756602A (en) * | 2016-12-02 | 2017-05-31 | 钢铁研究总院 | A kind of resistance to damp and hot marine atmosphere high-strength weathering steel high |
| CN106756476B (en) * | 2016-12-02 | 2018-02-23 | 钢铁研究总院 | The damp and hot naval air environment weathering steel of the resistance to height of high intensity and preparation method |
| CN106930427B (en) * | 2017-03-13 | 2019-06-14 | 灵武市金奥晨养殖专业合作社 | Planting unit on a kind of wall |
| CN109023071B (en) * | 2018-09-04 | 2020-02-18 | 鞍钢股份有限公司 | Neutral soil corrosion resistant steel for buried structure and manufacturing method thereof |
| CN109023070B (en) * | 2018-09-04 | 2020-02-18 | 鞍钢股份有限公司 | Steel for salt-resistant soil corrosion-resistant buried structure and manufacturing method thereof |
| CN110983156B (en) * | 2019-11-27 | 2021-12-10 | 上海大学 | Rare earth corrosion-resistant steel rich in alloying rare earth elements and manufacturing method thereof |
| CN111270135A (en) * | 2020-02-17 | 2020-06-12 | 本钢板材股份有限公司 | Economical weathering steel produced by strengthening RE-P and preparation process thereof |
| CN111621699A (en) * | 2020-03-24 | 2020-09-04 | 北京科技大学 | Corrosion-resistant low alloy steel for high-humidity-heat marine atmospheric environment bridge structure and preparation method thereof |
| CN114657459B (en) * | 2022-02-21 | 2022-11-18 | 长沙东鑫环保材料有限责任公司 | Nitrogen-vanadium-titanium-niobium rare earth microalloyed high-strength deep-drawing cold-rolled steel plate and production method thereof |
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| CN102337460A (en) * | 2011-11-14 | 2012-02-01 | 首钢总公司 | Ultrahigh-strength structural steel board for ocean engineering and production method thereof |
| CN102492896A (en) * | 2011-12-29 | 2012-06-13 | 钢铁研究总院 | Steel for upper deck of cargo oil tank of tanker |
| CN102686760A (en) * | 2010-07-09 | 2012-09-19 | 住友金属工业株式会社 | Corrosion-resistant steel material for cargo oil tank |
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| CN102686760A (en) * | 2010-07-09 | 2012-09-19 | 住友金属工业株式会社 | Corrosion-resistant steel material for cargo oil tank |
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| CN102492896A (en) * | 2011-12-29 | 2012-06-13 | 钢铁研究总院 | Steel for upper deck of cargo oil tank of tanker |
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