CN111020365A - Weather-resistant steel, steel plate manufacturing method thereof and angle steel manufacturing method - Google Patents
Weather-resistant steel, steel plate manufacturing method thereof and angle steel manufacturing method Download PDFInfo
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- CN111020365A CN111020365A CN201811212263.3A CN201811212263A CN111020365A CN 111020365 A CN111020365 A CN 111020365A CN 201811212263 A CN201811212263 A CN 201811212263A CN 111020365 A CN111020365 A CN 111020365A
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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
- 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
- C21D8/0205—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips of ferrous alloys
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- 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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- 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
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- 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
- C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
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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
- C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
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Abstract
The invention provides weathering steel, a steel plate manufacturing method thereof and an angle steel manufacturing method, wherein the weathering steel comprises the following components in parts by mass: c: 0.05 to 0.20%, Si: 0.20 to 0.40%, Mn: 0.80-1.60%, Cu: 0.50-0.80%, Cr: 0.05 to 0.85%, Nb: 0.01 to 0.1%, Ni: 0.15-0.70%, Ti is less than or equal to 0.12%, Mo is less than or equal to 0.30%, V is less than or equal to 0.12%, Zr is less than or equal to 0.15%, P is less than or equal to 0.03%, S is less than or equal to 0.006%, Al: 0.01-0.05%, N: 0.002-0.005%, less than or equal to 0.002% of O, and the balance of Fe and inevitable impurities. The weathering steel has excellent corrosion resistance and excellent mechanical properties such as stretching, impact, bending and the like, can still meet the mechanical requirements of the power transmission and transformation iron tower application after thinning treatment, reduces the cost of raw materials, has no hot galvanizing processing cost for the weathering steel power transmission iron tower, can also reduce the later-stage corrosion prevention maintenance cost, and is beneficial to reducing the construction cost; on the other hand, the hot dip galvanizing process is not needed, so that the pollution to the atmosphere and the soil environment is reduced; has obvious economic benefit and environmental protection effect, improves the mechanical and anti-corrosion performance and greatly prolongs the service life.
Description
Technical Field
The invention relates to raw materials used in power transmission and transformation engineering and a forming process thereof, in particular to weathering resistant steel, a manufacturing method of a steel plate thereof and a manufacturing method of angle steel.
Background
With the development of technological progress, more and more materials and products are unprecedentedly developed. Metallic materials are used in a wide variety of applications both in production and in life, and have been irreplaceable in many fields. The demand for metals in power transmission and transformation engineering is continuously increasing, and particularly, the non-metallic materials of the construction materials of power transmission towers are the morsels. Over time, however, the metallic materials in towers have also been exposed to a number of problems and drawbacks.
At present, many power transmission towers are easy to rust and corrode, the strength requirement can be met only when the power transmission towers reach a certain thickness, the processing process is complex and time-consuming, complex acid pickling, hot galvanizing manufacturing and other processes are needed, certain pollution is caused to the atmosphere and the soil environment, and the maintenance process is frequent and complex.
Therefore, the weathering steel, the steel plate manufacturing method thereof and the angle steel manufacturing method are needed to meet the defects of the prior art.
Disclosure of Invention
Aiming at the defects of the prior art, the applicant designs weather-resistant steel, a steel plate manufacturing method and an angle steel manufacturing method; the weathering steel has excellent corrosion resistance and excellent mechanical properties such as stretching, impact, bending and the like, can still meet the mechanical requirements of the power transmission and transformation iron tower application after thinning treatment, reduces the cost of raw materials, has no hot galvanizing processing cost for the weathering steel power transmission iron tower, can also reduce the later-stage corrosion prevention maintenance cost, and is beneficial to reducing the construction cost; on the other hand, the hot dip galvanizing process is not needed, so that the pollution to the atmosphere and the soil environment is reduced; has obvious economic benefit and environmental protection effect, improves the mechanical and anti-corrosion performance and greatly prolongs the service life.
The purpose of the invention is realized by the following technical scheme:
the invention provides weathering steel which comprises the following components in parts by mass:
c: 0.05 to 0.20%, Si: 0.20 to 0.40%, Mn: 0.80-1.60%, Cu: 0.50-0.80%, Cr: 0.05 to 0.85%, Nb: 0.01 to 0.1%, Ni: 0.15-0.70%, Ti is less than or equal to 0.12%, Mo is less than or equal to 0.30%, V is less than or equal to 0.12%, Zr is less than or equal to 0.15%, P is less than or equal to 0.03%, S is less than or equal to 0.006%, Al: 0.01-0.05%, N: 0.002-0.005%, less than or equal to 0.002% of O, and the balance of Fe and inevitable impurities.
Preferably, the weathering steel comprises the following components in parts by mass:
C：0.06～0.20％、Si：0.25～0.40％、Mn：0.90～1.60％、Cu：0.50～0.70％、Cr：0.05～0.80％、Nb：0.03～0.1％。
preferably, the weathering steel comprises the following components in parts by mass:
C：0.06～0.15％、Si：0.25～0.35％、Mn：0.90～1.50％、Cu：0.60～0.70％、Cr：0.25～0.80％、Nb：0.03～0.08％。
preferably, the weathering steel comprises the following components in parts by mass:
C：0.10％、Si：0.20％、Mn：1.20％、Cu：0.65％、Cr：0.50％、Nb：0.05％。
preferably, the weathering steel comprises the following components in parts by mass:
Ni：0.15～0.50％、Ti：0.05～0.12％、Mo：0.10～0.30％、V：0.05～0.12％、Zr：0.05～0.15％、P：0.01～0.03％、S：0.002～0.006％、Al：0.01～0.05％、N：0.002～0.005％、O：0.001～0.002％。
preferably, the weathering steel comprises the following components in parts by mass:
Ni：0.30～0.50％、Ti：0.05～0.10％、Mo：0.10～0.20％、V：0.05～0.08％、Zr：0.05～0.10％、P：0.01～0.02％、S：0.002～0.005％、Al：0.01～0.04％、N：0.002～0.003％、O：0.0015～0.002％。
preferably, the weathering steel comprises the following components in parts by mass:
Ni：0.40％、Ti：0.08％、Mo：0.15％、V：0.06％、Zr：0.08％、P：0.015％、S：0.004％、Al：0.03％、N：0.0025％、O：0.0018％。
based on the same inventive concept, the invention also provides a steel plate forming method of the weathering steel, which comprises the following steps:
(1) smelting the weathering steel molten steel in a converter or an electric furnace, and then sequentially carrying out LF refining, RH vacuum treatment and continuous casting;
(2) keeping the temperature of the continuously cast steel billet at 1200-1300 ℃ according to the time requirement of 1.5min/mm, roughly rolling the steel billet to 9-15 times the thickness of a finished product, and finish rolling; the inlet temperature of the finish rolling is 980-620 ℃, and the finish rolling temperature is 890-900 ℃;
(3) and carrying out laminar flow cooling on the finish-rolled steel plate according to a front-section cooling mode, coiling the steel plate at 580-620 ℃ to form a coil, and carrying out heat preservation for 1h and then air cooling.
Based on the same inventive concept, the invention also provides an angle steel forming method of the weathering steel, which comprises the following steps:
(1) smelting the weathering steel molten steel in a converter or an electric furnace, and then sequentially carrying out LF refining, RH vacuum treatment and continuous casting;
(2) and (3) preserving the heat of the continuously cast steel billet at 1200-1300 ℃ according to the time requirement of 1.5min/mm, and then sequentially carrying out rough rolling and section rolling.
Preferably, the section rolling is carried out by 4-pass rolling by 4 butterfly hole type rolling mills with vertical rolling, and the 4 rolling mills are BD1, BD2, F1 and F2 respectively;
the BD2 and the BD1 adopt a shared guide;
the inlet of the F2 adopts a rolling guide, and the rolling guide comprises an upper guide wheel, a lower guide wheel and three guide wheels.
Compared with the closest prior art, the invention has the beneficial effects that:
1. according to the technical scheme provided by the invention, the weathering steel has excellent corrosion resistance and excellent mechanical properties such as stretching, impact and bending, can still meet the mechanical requirements of power transmission and transformation iron towers after thinning treatment, and reduces the cost of raw materials; on the other hand, the hot dip galvanizing process is not needed, so that the pollution to the atmosphere and the soil environment is reduced; has obvious economic benefit and environmental protection effect, improves the mechanical and anti-corrosion performance and greatly prolongs the service life.
Drawings
The invention will be further described with reference to the accompanying drawings in which:
FIG. 1: a circuit diagram of an electrochemical test provided by the present invention;
FIG. 2: the electrochemical parameter R provided by the inventiontAnd RrustElectrochemical parameters were plotted as a function of cycle time.
Detailed Description
The technical solutions in the embodiments of the present application are clearly and completely described below with reference to the drawings in the embodiments of the present application.
Example 1
This example provides two weathering steels, Q345 weathering angle and Q420 weathering angle, respectively, comprising Fe and unavoidable impurities, the remaining ingredients being as shown in table 1.
TABLE 1 chemical composition table (wt%) of two kinds of weather-resistant steel angle iron
The tensile, impact and bending mechanical properties of the two weather-resistant angle steels provided in this example were respectively tested, and the results are shown in table 2.
Table 2: two kinds of weathering steel mechanical property test result table
From the table, the tensile, impact and bending mechanical properties of the Q345 weather-resistant angle steel and the Q420 weather-resistant angle steel are excellent, and are obviously improved compared with the existing angle steel.
The Q420 weathering angle steel and the Q420 plain carbon steel provided in this example were subjected to an indoor accelerated corrosion test, and then electrochemical experiments were performed using the electrochemical test circuit diagram shown in fig. 1, respectively, to test an electrochemical parameter RtAnd RrustCarrying out a test and obtaining an electrochemical parameter R according to the testtAnd RrustPlotting the electrochemical parameters as a function of cycle period, as shown in FIG. 2;
as can be seen from the attached figure 2, after chemical tests, compared with Rrustt and Q420 common carbon steel, the resistance Rt of the Q420 weather-resistant angle steel is obviously higher than that of the Q420 common carbon steel in a cycle period, and the corrosion resistance of the Q420 weather-resistant angle steel is better.
Example 2
Based on the same inventive concept, the invention also provides a steel plate forming method of the weathering steel, which comprises the following steps:
(1) smelting the weathering steel molten steel in a converter or an electric furnace, and then sequentially carrying out LF refining, RH vacuum treatment and continuous casting;
(2) keeping the temperature of the continuously cast steel billet at 1200-1300 ℃ according to the time requirement of 1.5min/mm, roughly rolling the steel billet to 9-15 times the thickness of a finished product, and finish rolling; the inlet temperature of the finish rolling is 980-620 ℃, and the finish rolling temperature is 890-900 ℃;
(3) and carrying out laminar flow cooling on the finish-rolled steel plate according to a front-section cooling mode, coiling the steel plate at 580-620 ℃ to form a coil, and carrying out heat preservation for 1h and then air cooling.
Example 3
Based on the same inventive concept, the invention also provides an angle steel forming method of the weathering steel, which comprises the following steps:
(1) smelting the weathering steel molten steel in a converter or an electric furnace, and then sequentially carrying out LF refining, RH vacuum treatment and continuous casting;
(2) and (3) preserving the heat of the continuously cast steel billet at 1200-1300 ℃ according to the time requirement of 1.5min/mm, and then sequentially carrying out rough rolling and section rolling.
The section rolling adopts 4 butterfly hole type rolling mills with vertical rolling to carry out 4-pass rolling, and the 4 rolling mills are respectively BD1, BD2, F1 and F2;
the BD2 and the BD1 adopt a shared guide;
the inlet of the F2 adopts a rolling guide, and the rolling guide comprises an upper guide wheel, a lower guide wheel and three guide wheels.
Finally, it should be noted that: the embodiments described are only a part of the embodiments of the present application, and not all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments in the present application belong to the protection scope of the present application.
Claims (10)
1. The weathering steel is characterized by comprising the following components in parts by mass:
c: 0.05 to 0.20%, Si: 0.20 to 0.40%, Mn: 0.80-1.60%, Cu: 0.50-0.80%, Cr: 0.05 to 0.85%, Nb: 0.01 to 0.1%, Ni: 0.15-0.70%, Ti is less than or equal to 0.12%, Mo is less than or equal to 0.30%, V is less than or equal to 0.12%, Zr is less than or equal to 0.15%, P is less than or equal to 0.03%, S is less than or equal to 0.006%, Al: 0.01-0.05%, N: 0.002-0.005%, less than or equal to 0.002% of O, and the balance of Fe and inevitable impurities.
2. The weathering steel according to claim 1, characterized in that the weathering steel comprises the following components in mass fraction:
C：0.06～0.20％、Si：0.25～0.40％、Mn：0.90～1.60％、Cu：0.50～0.70％、Cr：0.05～0.80％、Nb：0.03～0.1％。
3. the weathering steel according to claim 2, characterized in that the weathering steel comprises the following components in mass fraction:
C：0.06～0.15％、Si：0.25～0.35％、Mn：0.90～1.50％、Cu：0.60～0.70％、Cr：0.25～0.80％、Nb：0.03～0.08％。
4. the weathering steel according to claim 3, characterized in that the weathering steel comprises the following components in mass fraction:
C：0.10％、Si：0.20％、Mn：1.20％、Cu：0.65％、Cr：0.50％、Nb：0.05％。
5. the weathering steel according to claim 1, characterized in that the weathering steel comprises the following components in mass fraction:
Ni：0.15～0.50％、Ti：0.05～0.12％、Mo：0.10～0.30％、V：0.05～0.12％、Zr：0.05～0.15％、P：0.01～0.03％、S：0.002～0.006％、Al：0.01～0.05％、N：0.002～0.005％、O：0.001～0.002％。
6. the weathering steel according to claim 1, characterized in that the weathering steel comprises the following components in mass fraction:
Ni：0.30～0.50％、Ti：0.05～0.10％、Mo：0.10～0.20％、V：0.05～0.08％、Zr：0.05～0.10％、P：0.01～0.02％、S：0.002～0.005％、Al：0.01～0.04％、N：0.002～0.003％、O：0.0015～0.002％。
7. the weathering steel according to claim 6, characterized in that it comprises, in mass fractions:
Ni：0.40％、Ti：0.08％、Mo：0.15％、V：0.06％、Zr：0.08％、P：0.015％、S：0.004％、Al：0.03％、N：0.0025％、O：0.0018％。
8. a method for forming a steel sheet of weathering steel according to any of claims 1 to 7, characterized in that the method comprises the following steps:
(1) smelting the weathering steel molten steel in a converter or an electric furnace, and then sequentially carrying out LF refining, RH vacuum treatment and continuous casting;
(2) keeping the temperature of the continuously cast steel billet at 1200-1300 ℃ according to the time requirement of 1.5min/mm, roughly rolling the steel billet to 9-15 times the thickness of a finished product, and finish rolling; the inlet temperature of the finish rolling is 980-620 ℃, and the finish rolling temperature is 890-900 ℃;
(3) and carrying out laminar flow cooling on the finish-rolled steel plate according to a front-section cooling mode, coiling the steel plate at 580-620 ℃ to form a coil, and carrying out heat preservation for 1h and then air cooling.
9. The angle steel forming method of the weathering steel according to any of claims 1 to 7, characterized in that the method comprises the following steps:
(1) smelting the weathering steel molten steel in a converter or an electric furnace, and then sequentially carrying out LF refining, RH vacuum treatment and continuous casting;
(2) and (3) preserving the heat of the continuously cast steel billet at 1200-1300 ℃ according to the time requirement of 1.5min/mm, and then sequentially carrying out rough rolling and section rolling.
10. The angle iron forming method according to claim 9, wherein the profile rolling is performed by 4 rolling passes by 4 butterfly-type rolling mills with vertical rolling, and the 4 rolling mills are respectively BD1, BD2, F1 and F2;
the BD2 and the BD1 adopt a shared guide;
the inlet of the F2 adopts a rolling guide, and the rolling guide comprises an upper guide wheel, a lower guide wheel and three guide wheels.
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| CN112553525A (en) * | 2020-11-17 | 2021-03-26 | 天津重型装备工程研究有限公司 | Medium-carbon low-alloy high-strength steel and preparation method thereof |
| CN112647020A (en) * | 2020-12-11 | 2021-04-13 | 贵州电网有限责任公司 | Weather-resistant steel tower and preparation method thereof |
| CN112760572A (en) * | 2020-12-30 | 2021-05-07 | 钢铁研究总院 | High-corrosion-resistance low-yield-ratio weathering steel for railway vehicles and preparation method thereof |
| CN113846895A (en) * | 2021-10-15 | 2021-12-28 | 峻江建设有限公司 | High-strength iron tower main rod and preparation method thereof |
| CN113846894A (en) * | 2021-09-30 | 2021-12-28 | 峻江建设有限公司 | Preparation method of extra-high voltage safety transmission tower |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102725432A (en) * | 2010-01-28 | 2012-10-10 | 杰富意钢铁株式会社 | Highly corrosion-resistant hot-rolled ferrite stainless steel sheet having excellent toughness |
| JP2013044027A (en) * | 2011-08-25 | 2013-03-04 | Jfe Steel Corp | Fire-resistant steel material and its production method |
| CN202984283U (en) * | 2012-12-08 | 2013-06-12 | 武钢集团昆明钢铁股份有限公司 | Import rolling guide and guard idle roller bearing for finishing mill |
| CN103302255A (en) * | 2012-03-14 | 2013-09-18 | 宝山钢铁股份有限公司 | Manufacturing method of thin-strip casting 700 MPa grade high-strength weather resisting steel |
| CN103695773A (en) * | 2013-12-11 | 2014-04-02 | 武汉钢铁(集团)公司 | 690MPa-yield-strength fire-resistant weather-resistant earthquake-proof construction steel and production method thereof |
| CN104419878A (en) * | 2013-09-05 | 2015-03-18 | 鞍钢股份有限公司 | Ultrahigh-strength cold-rolled dual-phase steel with weather resistance and manufacturing method thereof |
| CN106756468A (en) * | 2015-11-25 | 2017-05-31 | 中国电力科学研究院 | A kind of preparation method of 800Mpa transmission towers high-strength weathering steel |
| CN106756470A (en) * | 2015-11-25 | 2017-05-31 | 中国电力科学研究院 | The preparation method of transmission tower weathering steel under a kind of rural atmosphere |
| WO2017115748A1 (en) * | 2015-12-28 | 2017-07-06 | Ｊｆｅスチール株式会社 | High-strength steel sheet, high-strength galvanized steel sheet, and method for manufacturing same |
-
2018
- 2018-10-09 CN CN201811212263.3A patent/CN111020365A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102725432A (en) * | 2010-01-28 | 2012-10-10 | 杰富意钢铁株式会社 | Highly corrosion-resistant hot-rolled ferrite stainless steel sheet having excellent toughness |
| JP2013044027A (en) * | 2011-08-25 | 2013-03-04 | Jfe Steel Corp | Fire-resistant steel material and its production method |
| CN103302255A (en) * | 2012-03-14 | 2013-09-18 | 宝山钢铁股份有限公司 | Manufacturing method of thin-strip casting 700 MPa grade high-strength weather resisting steel |
| CN202984283U (en) * | 2012-12-08 | 2013-06-12 | 武钢集团昆明钢铁股份有限公司 | Import rolling guide and guard idle roller bearing for finishing mill |
| CN104419878A (en) * | 2013-09-05 | 2015-03-18 | 鞍钢股份有限公司 | Ultrahigh-strength cold-rolled dual-phase steel with weather resistance and manufacturing method thereof |
| CN103695773A (en) * | 2013-12-11 | 2014-04-02 | 武汉钢铁(集团)公司 | 690MPa-yield-strength fire-resistant weather-resistant earthquake-proof construction steel and production method thereof |
| CN106756468A (en) * | 2015-11-25 | 2017-05-31 | 中国电力科学研究院 | A kind of preparation method of 800Mpa transmission towers high-strength weathering steel |
| CN106756470A (en) * | 2015-11-25 | 2017-05-31 | 中国电力科学研究院 | The preparation method of transmission tower weathering steel under a kind of rural atmosphere |
| WO2017115748A1 (en) * | 2015-12-28 | 2017-07-06 | Ｊｆｅスチール株式会社 | High-strength steel sheet, high-strength galvanized steel sheet, and method for manufacturing same |
Non-Patent Citations (2)
| Title |
|---|
| 于勇等: "《钢铁工业绿色工艺技术》", 31 January 2017, 冶金工业出版社 * |
| 苏世怀等: "《热轧钢筋 高效节约型建筑用钢》", 30 September 2010, 冶金工业出版社 * |
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| CN112553525B (en) * | 2020-11-17 | 2021-12-21 | 天津重型装备工程研究有限公司 | Medium-carbon low-alloy high-strength steel and preparation method thereof |
| CN112647020A (en) * | 2020-12-11 | 2021-04-13 | 贵州电网有限责任公司 | Weather-resistant steel tower and preparation method thereof |
| CN112760572A (en) * | 2020-12-30 | 2021-05-07 | 钢铁研究总院 | High-corrosion-resistance low-yield-ratio weathering steel for railway vehicles and preparation method thereof |
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