CN106893950A - Low yield strength ratio cold rolling weather resisting steel and its production method - Google Patents
Low yield strength ratio cold rolling weather resisting steel and its production method Download PDFInfo
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- CN106893950A CN106893950A CN201710025155.4A CN201710025155A CN106893950A CN 106893950 A CN106893950 A CN 106893950A CN 201710025155 A CN201710025155 A CN 201710025155A CN 106893950 A CN106893950 A CN 106893950A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0226—Hot rolling
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0236—Cold rolling
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Sheet Steel (AREA)
Abstract
The invention discloses a kind of low yield strength ratio cold rolling weather resisting steel and its production method, it include hot rolling, acid roll, continuous annealing and smooth operation；The weight/mass percentage composition of the cold rolling weather resisting composition of steel is：C 0.04~0.10%, Si≤0.45%, Mn≤0.50%, P≤0.12%, S≤0.020%, Cu≤0.60%, Cr≤1.0%, Ni≤0.50%, B 0.003%~0.007%, remaining is iron and inevitable impurity.This method realizes the atmospheric corrosion resistance of strip using chemical elements such as suitable Cu, P, Cr, Ni；The performance of strip low yield strength ratio is realized using appropriate continuous annealing process and flattening process；The addition for use hot-rolled high finish to gauge, high temperature curling, cheating cold slow cooling and make steel B element is realized to the control with hardness of steel and plasticity to control hot rolling and cold rolled grain size to obtain suitable hot rolling performance and tissue.The low yield strength ratio cold rolling weather resisting steel of this method production, with suitable tensile property and good elongation percentage, low yield tensile ratio, elongation percentage high, with good processability.
Description
Technical field
The invention belongs to field of metallurgy, especially a kind of low yield strength ratio cold rolling weather resisting steel and its production method.
Background technology
Weather resisting steel is also known as weathering steel, and its range of application is relatively broad, particularly in railway transport vehicle and city
Using more in infrastructure.Foreign countries begin to apply weather resisting steel early in the thirties in 20th century.Later various countries are according to this
The resource situation of state, develops and have developed various types of weather resisting steels, and in bridge, rolling stock and building extensively
It is applied.
Because the complex chemical composition of weathering steel, to strip yield tensile ratio and the far-reaching Mn of elongation percentage, Si, P, Cu, Cr,
Ni contents are high, cause yield tensile ratio >=0.80 of general cold rolling weather resisting steel, elongation percentage A≤35%.Because of general cold rolling weather resisting steel
Yield ratio is higher, elongation percentage is relatively low, it is impossible to meet some fields to low yield strength ratio, the demand of high-elongation cold rolling weather resisting steel.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of low yield strength ratio cold rolling weather resisting steel of high-elongation；The present invention is also
There is provided a kind of production method of low yield strength ratio cold rolling weather resisting steel.
In order to solve the above technical problems, the weight/mass percentage composition of present component is：C 0.04~0.10%, Si≤
0.45%, Mn≤0.50%, P≤0.12%, S≤0.020%, Cu≤0.60%, Cr≤1.0%, Ni≤0.50%, B 0.003%~
0.007%, remaining is iron and inevitable impurity.
Preferably, the weight/mass percentage composition of its composition is：C 0.04~0.10%, Si 0.20~0.45%, Mn 0.20~
0.50%, P 0.05~0.10%, S≤0.020%, Cu 0.20~0.45%, Cr 0.30~0.70%, Ni 0.20~0.40%, B
0.003%~0.007%, remaining is iron and inevitable impurity.
Yield tensile ratio≤0.74 of cold rolling weather resisting steel of the present invention, stretches rate A >=40%.
In the present invention：
C：Carbon is most economical intensified element in steel, main the intensity for improving steel is mainly shown by solution strengthening and precipitation strength
Write.But with the increase of carbon content in steel, the plasticity and toughness of steel can be reduced substantially, while its welding and cold-forming property are notable
Degenerate.
Si：Silicon is solution strengthening element in steel, and can improve the purity level of steel, moreover it is possible to increase the flowing of molten steel
Property.But as the raising of Si contents can reduce the elongation percentage of material, the too high surface that can have a strong impact on hot-strip of silicon in addition
Quality.
Mn：Manganese is solution strengthening element in steel, and Mn is identical with the invigoration effect of Si, and manganese is to expand γ phase p-block element ps, can
γ is reduced to α phase transition temperatures, helps to obtain tiny phase-change product.If manganese is too high, can reduce occur in strand bright
Aobvious segregation, has obvious banded structure in hot-strip, have a strong impact on strip property.
P、Cu、Cr、Ni：P, Cu, Cr, Ni are corrosion-resistant element in this steel grade, and band is made by rationally adding these elements
Steel has a significant decay resistance, but from these elements for the influence angle to performance be objectionable impurities elements, these yuan
Element can significantly raise the yield tensile ratio of strip, reduce elongation percentage.
S：Sulphur is objectionable impurities elements, and it is more low better to control, but is considered from the cost efficiency of production, and present invention control exists
Less than 0.020%.
B：Effects of the B in low-alloy steel Series Steel mainly increases the quenching degree of steel and increases band hardness of steel；Through excessive
Wheel experiment is used B element as the element for promoting weather-proof crystalline grain of steel to grow up first in the present invention.
The inventive method include hot rolling, acid roll, continuous annealing and smooth operation；The quality hundred of the cold rolling weather resisting composition of steel
Divide content as described above.
Continuous annealing operation described in the inventive method：800~860 DEG C of soaking zone temperature, 350~410 DEG C of overaging temperature,
60~120 DEG C of final cooling temperature, 50~120m/min of strip speed, furnace atmosphere uses N2Or inert gas shielding.
Hot-rolled process described in the inventive method：1150~1250 DEG C of slab heating temperature, hot rolling finishing temperature 870~920
DEG C, 690 DEG C~730 DEG C of coiling temperature rolls rear strip and stacks, cheats cold placement 2~4 days.
Operation is rolled in acid described in the inventive method：Cold rolling reduction ratio 45~55%.
Smooth operation described in the inventive method：Smooth elongation percentage is 0.3~1.0%.
It is using the beneficial effect produced by above-mentioned technical proposal：Life is not being raised according to the weathering steel of present invention production
There is low yield strength ratio, high-elongation in the case of producing manufacturing cost, with good processability.
The inventive method realizes the atmospheric corrosion resistance of strip using chemical elements such as suitable Cu, P, Cr, Ni；
The performance of belt steel surface strip low yield strength ratio is realized using appropriate continuous annealing process and flattening process；Using hot-rolled high
Finish to gauge, high temperature curling and the addition of steel-making B element control hot rolling and cold rolled grain size to obtain suitable hot rolling performance
And tissue is realized to the control with hardness of steel and plasticity.The low yield strength ratio cold rolling weather resisting steel of the inventive method production, with conjunction
Suitable tensile property and good elongation percentage, low yield tensile ratio, elongation percentage high, with good processability.
Specific embodiment
With reference to specific embodiment, the present invention is further detailed explanation.
Embodiment 1：This low yield strength ratio cold rolling weather resisting steel and its production method use following concrete technologies.
The thickness of the cold rolling weather resisting steel plate is 1.0mm, its chemical composition（wt）：C 0.07%, Si 0.20%, Mn
0.45%, P 0.10%, S 0.005%, Cu 0.25%, Cr 0.35%, Ni 0.20%, B 0.004%, remaining is for iron and unavoidably
Impurity.
The production stage of the cold rolling weather resisting steel plate is as described below：1）Steel-making and continuous casting working procedure：Pneumatic steelmaking, LF refining,
It is continuously cast into strand（Slab）.
2）Hot-rolled process：Strand is heated, heating-up temperature is 1200 DEG C；Strand is rolled, hot rolled plate is rolled into
Band, finishing temperature is 900 DEG C, and coiling temperature is 710 DEG C, rolls rear strip and enters burial pit, cold 3 days of heap.
3）Operation is rolled in acid：Including pickling and cold-rolled process；In acid cleaning process, 85 DEG C of acid liquor temperature, acid cleaning process segment length
105 meters, pickling speed 60m/min；Cold rolling reduction ratio is 55%.
4）Continuous annealing operation：840 DEG C of soaking zone temperature, 400 DEG C of overaging temperature, 120 DEG C of final cooling temperature, strip operation
Speed 65m/min, furnace atmosphere is N2Protection.
5）Flattening process：Elongation control pattern, smooth elongation percentage is 0.60%.
The testing result of cold rolling weather resisting steel plate is obtained by the present embodiment：Tensile strength 495MPa, yield strength 366, Qu Qiang
It is 42% than 0.74, elongation percentage A.
Embodiment 2：This low yield strength ratio cold rolling weather resisting steel and its production method use following concrete technologies.
The thickness of the cold rolling weather resisting steel plate is 1.5mm, its chemical composition（wt）：C 0.06%, Si 0.45%, Mn
0.35%, P 0.08%, S 0.006%, Cu 0.30%, Cr 0.30%, Ni 0.25%, B 0.0035%, remaining is iron and can not keep away
Exempt from impurity.
The production stage of the cold rolling weather resisting steel plate is as described below：1）Steel-making and continuous casting working procedure：Pneumatic steelmaking, LF refining,
It is continuously cast into strand.
2）Hot-rolled process：Strand is heated, heating-up temperature is 1190 DEG C；Strand is rolled, hot rolled plate is rolled into
Band, finishing temperature is 880 DEG C, and coiling temperature is 700 DEG C, rolls rear strip and enters burial pit, cold 2 days of heap.
3）Operation is rolled in acid：Cold rolling reduction ratio 52%.
4）Continuous annealing operation：800 DEG C of soaking zone temperature, 360 DEG C of overaging temperature, 100 DEG C of final cooling temperature, strip operation
Speed 50m/min, furnace atmosphere is N2Protection.
5）Smooth operation：Elongation control pattern, smooth elongation percentage is 0.30%.
The testing result of cold rolling weather resisting steel plate is obtained by the present embodiment：Tensile strength 501MPa, the MPa of yield strength 368,
Yield tensile ratio 0.735, elongation percentage A 41.0%.
Embodiment 3：This low yield strength ratio cold rolling weather resisting steel and its production method use following concrete technologies.
The thickness of the cold rolling weather resisting steel plate is 1.7mm, its chemical composition（wt）：C 0.08%, Si 0.31%, Mn
0.20%, P 0.07%, S 0.005%, Cu 0.32%, Cr 0.55%, Ni 0.40%, B 0.005%, remaining is for iron and unavoidably
Impurity.
The production stage of the cold rolling weather resisting steel plate is as described below：1）Steel-making and continuous casting working procedure：Pneumatic steelmaking, LF refining,
It is continuously cast into strand.
2）Hot-rolled process：Strand is heated, heating-up temperature is 1210 DEG C；Strand is rolled, hot rolled plate is rolled into
Band, finishing temperature is 910 DEG C, and coiling temperature is 720 DEG C, rolls rear strip and enters burial pit, cold 4 days of heap.
3）Operation is rolled in acid：Cold rolling reduction ratio 49%.
4）Continuous annealing operation：850 DEG C of soaking zone temperature, 410 DEG C of overaging temperature, 90 DEG C of final cooling temperature, strip operation
Speed 70m/min, furnace atmosphere is N2Protection.
5）Smooth operation：Elongation control pattern, smooth elongation percentage is 0.80%.
The testing result of cold rolling weather resisting steel plate is obtained by the present embodiment：Tensile strength 457MPa, the MPa of yield strength 335,
Yield tensile ratio 0.732, elongation percentage A are 43.5%.
Embodiment 4：This low yield strength ratio cold rolling weather resisting steel and its production method use following concrete technologies.
The thickness of the cold rolling weather resisting steel plate is 2.0mm, its chemical composition（wt）：C 0.04%, Si 0.39%, Mn
0.45%, P 0.05%, S 0.020%, Cu 0.45%, Cr 0.70%, Ni 0.35%, B 0.007%, remaining is for iron and unavoidably
Impurity.
The production stage of the cold rolling weather resisting steel plate is as described below：1）Steel-making and continuous casting working procedure：Pneumatic steelmaking, LF refining,
It is continuously cast into strand.
2）Hot-rolled process：Strand is heated, heating-up temperature is 1250 DEG C；Strand is rolled, hot rolled plate is rolled into
Band, finishing temperature is 920 DEG C, and coiling temperature is 730 DEG C, rolls rear strip and enters burial pit, cold 2 days of heap.
3）Operation is rolled in acid：Cold rolling reduction ratio 45%.
4）Continuous annealing operation：830 DEG C of soaking zone temperature, 350 DEG C of overaging temperature, 100 DEG C of final cooling temperature, strip operation
Speed 120m/min, furnace atmosphere is N2Protection.
5）Smooth operation：Elongation control pattern, smooth elongation percentage is 1.0%.
The testing result of cold rolling weather resisting steel plate is obtained by the present embodiment：Tensile strength 486MPa, the MPa of yield strength 358,
Yield tensile ratio 0.737, elongation percentage A 42.5%.
Embodiment 5：This low yield strength ratio cold rolling weather resisting steel and its production method use following concrete technologies.
The thickness of the cold rolling weather resisting steel plate is 1.4mm, its chemical composition（wt）：C 0.10%, Si 0.35%, Mn
0.50%, P 0.07%, S 0.011%, Cu 0.20%, Cr 0.43%, Ni 0.23%, B 0.003%, remaining is for iron and unavoidably
Impurity.
The production stage of the cold rolling weather resisting steel plate is as described below：1）Steel-making and continuous casting working procedure：Pneumatic steelmaking, LF refining,
It is continuously cast into strand.
2）Hot-rolled process：Strand is heated, heating-up temperature is 1150 DEG C；Strand is rolled, hot rolled plate is rolled into
Band, finishing temperature is 870 DEG C, and coiling temperature is 690 DEG C, rolls rear strip and enters burial pit, cold 2.5 days of heap.
3）Operation is rolled in acid：Cold rolling reduction ratio 53%.
4）Continuous annealing operation：860 DEG C of soaking zone temperature, 390 DEG C of overaging temperature, 60 DEG C of final cooling temperature, strip operation
Speed 65m/min, furnace atmosphere is N2Protection.
5）Smooth operation：Elongation control pattern, smooth elongation percentage is 0.90%.
The testing result of cold rolling weather resisting steel plate is obtained by the present embodiment：Tensile strength 440MPa, yield strength 320MPa, bend
Strong ratio 0.727, elongation percentage A 41.5%.
Embodiment 6：This low yield strength ratio cold rolling weather resisting steel and its production method use following concrete technologies.
The thickness of the cold rolling weather resisting steel plate is 1.6mm, its chemical composition（wt）：C 0.08%, Si 0.42%, Mn
0.25%, P 0.12%, S 0.016%, Cu 0.60%, Cr 1.0%, Ni 0.50%, B 0.006%, remaining is for iron and unavoidably
Impurity.
The production stage of the cold rolling weather resisting steel plate is as described below：1）Steel-making and continuous casting working procedure：Pneumatic steelmaking, LF refining,
It is continuously cast into strand.
2）Hot-rolled process：Strand is heated, heating-up temperature is 1180 DEG C；Strand is rolled, hot rolled plate is rolled into
Band, finishing temperature is 890 DEG C, and coiling temperature is 730 DEG C, rolls rear strip and enters burial pit, cold 4 days of heap.
3）Operation is rolled in acid：Cold rolling reduction ratio 55%.
4）Continuous annealing operation：800 DEG C of soaking zone temperature, 370 DEG C of overaging temperature, 80 DEG C of final cooling temperature, strip operation
Speed 50m/min, furnace atmosphere is N2Protection.
5）Smooth operation：Elongation control pattern, smooth elongation percentage is 0.45%.
The testing result of cold rolling weather resisting steel plate is obtained by the present embodiment：Tensile strength 510MPa, yield strength 375MPa, bend
Strong ratio 0.736, elongation percentage A 42.5%.
Claims (8)
1. a kind of low yield strength ratio cold rolling weather resisting steel, it is characterised in that the weight/mass percentage composition of its composition is：C 0.04~0.10%,
Si≤0.45%, Mn≤0.50%, P≤0.12%, S≤0.020%, Cu≤0.60%, Cr≤1.0%, Ni≤0.50%, B 0.003%
~0.007%, remaining is iron and inevitable impurity.
2. low yield strength ratio cold rolling weather resisting steel according to claim 1, it is characterised in that the weight/mass percentage composition of its composition
For：C 0.04~0.10%, Si 0.20~0.45%, Mn 0.20~0.50%, P 0.05~0.10%, S≤0.020%, Cu
0.20~0.45%, Cr 0.30~0.70%, Ni 0.20~0.40%, B 0.003%~0.007%, remaining is for iron and unavoidably
Impurity.
3. low yield strength ratio cold rolling weather resisting steel according to claim 1 and 2, it is characterised in that：The cold rolling weather resisting steel bend
Strong ratio≤0.74, stretches rate A >=40%.
4. a kind of production method of low yield strength ratio cold rolling weather resisting steel, it is characterised in that：It include hot rolling, acid roll, continuous annealing and
Smooth operation；The weight/mass percentage composition of the cold rolling weather resisting composition of steel is：C 0.04~0.10%, Si≤0.45%, Mn≤
0.50%, P≤0.12%, S≤0.020%, Cu≤0.60%, Cr≤1.0%, Ni≤0.50%, B 0.003%~0.007%, remaining is
Iron and inevitable impurity.
5. the production method of low yield strength ratio cold rolling weather resisting steel according to claim 4, it is characterised in that the continuous annealing
Operation：800~860 DEG C of soaking zone temperature, 350~410 DEG C of overaging temperature, 60~120 DEG C of final cooling temperature, strip speed
50~120m/min, furnace atmosphere uses N2Or inert gas shielding.
6. the production method of low yield strength ratio cold rolling weather resisting steel according to claim 4, it is characterised in that the Hot-roller
Sequence：1150~1250 DEG C of slab heating temperature, 870~920 DEG C of hot rolling finishing temperature, 690 DEG C~730 DEG C of coiling temperature, after rolling
Strip is stacked, cheats cold placement 2~4 days.
7. the production method of low yield strength ratio cold rolling weather resisting steel according to claim 4, it is characterised in that work is rolled in the acid
Sequence：Cold rolling reduction ratio 45~55%.
8. the production method of the low yield strength ratio cold rolling weather resisting steel according to claim 4-7 any one, it is characterised in that
The smooth operation：Smooth elongation percentage is 0.3~1.0%.
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| CN201710025155.4A CN106893950A (en) | 2017-01-13 | 2017-01-13 | Low yield strength ratio cold rolling weather resisting steel and its production method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107574387A (en) * | 2017-09-23 | 2018-01-12 | 武钢集团昆明钢铁股份有限公司 | A kind of weather-proof low-yield point damper steel plate of 225MPa levels and strip production methods |
| CN112126855A (en) * | 2020-09-11 | 2020-12-25 | 山东钢铁集团日照有限公司 | Production method of cold-rolled weather-resistant steel with yield strength of more than 310MPa |
| CN112522568A (en) * | 2019-09-19 | 2021-03-19 | 宝山钢铁股份有限公司 | Fire-resistant weather-resistant steel plate/belt and manufacturing method thereof |
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| JPS60141890A (en) * | 1983-12-27 | 1985-07-26 | Sumitomo Metal Ind Ltd | Weather-resistant low-alloy steel material having stabilized rust |
| CN1639371A (en) * | 2002-02-27 | 2005-07-13 | 新日本制铁株式会社 | Atmosphere corrosion resisting steel plate having high strength and excellent bending formability and method for production thereof |
| CN1793405A (en) * | 2005-12-30 | 2006-06-28 | 武汉钢铁(集团)公司 | Colding rolling weather resistant depth impacting plate for vehicle and mfg. method thereof |
| CN101864538A (en) * | 2009-04-16 | 2010-10-20 | 上海梅山钢铁股份有限公司 | Nickel-free weather-resistant steel and method for preparing hot rolled plate thereof |
| CN104313491A (en) * | 2014-10-29 | 2015-01-28 | 江苏沙钢集团有限公司 | Weathering steel hot-rolled thin belt without P segregation and manufacturing method thereof |
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2017
- 2017-01-13 CN CN201710025155.4A patent/CN106893950A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60141890A (en) * | 1983-12-27 | 1985-07-26 | Sumitomo Metal Ind Ltd | Weather-resistant low-alloy steel material having stabilized rust |
| CN1639371A (en) * | 2002-02-27 | 2005-07-13 | 新日本制铁株式会社 | Atmosphere corrosion resisting steel plate having high strength and excellent bending formability and method for production thereof |
| CN1793405A (en) * | 2005-12-30 | 2006-06-28 | 武汉钢铁(集团)公司 | Colding rolling weather resistant depth impacting plate for vehicle and mfg. method thereof |
| CN101864538A (en) * | 2009-04-16 | 2010-10-20 | 上海梅山钢铁股份有限公司 | Nickel-free weather-resistant steel and method for preparing hot rolled plate thereof |
| CN104313491A (en) * | 2014-10-29 | 2015-01-28 | 江苏沙钢集团有限公司 | Weathering steel hot-rolled thin belt without P segregation and manufacturing method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107574387A (en) * | 2017-09-23 | 2018-01-12 | 武钢集团昆明钢铁股份有限公司 | A kind of weather-proof low-yield point damper steel plate of 225MPa levels and strip production methods |
| CN112522568A (en) * | 2019-09-19 | 2021-03-19 | 宝山钢铁股份有限公司 | Fire-resistant weather-resistant steel plate/belt and manufacturing method thereof |
| CN112126855A (en) * | 2020-09-11 | 2020-12-25 | 山东钢铁集团日照有限公司 | Production method of cold-rolled weather-resistant steel with yield strength of more than 310MPa |
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