CN110129675B - 高强钢筋及其生产方法 - Google Patents
高强钢筋及其生产方法 Download PDFInfo
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- CN110129675B CN110129675B CN201910434471.6A CN201910434471A CN110129675B CN 110129675 B CN110129675 B CN 110129675B CN 201910434471 A CN201910434471 A CN 201910434471A CN 110129675 B CN110129675 B CN 110129675B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 186
- 239000010959 steel Substances 0.000 title claims abstract description 186
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 49
- 238000009749 continuous casting Methods 0.000 claims abstract description 49
- 238000001816 cooling Methods 0.000 claims abstract description 40
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 29
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 28
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 26
- 238000005096 rolling process Methods 0.000 claims abstract description 26
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 23
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 23
- 239000000126 substance Substances 0.000 claims abstract description 20
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 18
- 238000003723 Smelting Methods 0.000 claims abstract description 17
- 239000012535 impurity Substances 0.000 claims abstract description 17
- 238000010438 heat treatment Methods 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims description 53
- 230000008569 process Effects 0.000 claims description 42
- 229910000859 α-Fe Inorganic materials 0.000 claims description 29
- 229910001563 bainite Inorganic materials 0.000 claims description 28
- 229910001562 pearlite Inorganic materials 0.000 claims description 26
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 25
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 20
- 238000003756 stirring Methods 0.000 claims description 18
- 238000012360 testing method Methods 0.000 claims description 14
- 238000003466 welding Methods 0.000 claims description 13
- 229910052786 argon Inorganic materials 0.000 claims description 10
- 238000007664 blowing Methods 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 10
- 229910052804 chromium Inorganic materials 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 8
- 229910052759 nickel Inorganic materials 0.000 claims description 8
- 238000007670 refining Methods 0.000 claims description 8
- 238000009864 tensile test Methods 0.000 claims description 8
- 229910052750 molybdenum Inorganic materials 0.000 claims description 6
- 239000002244 precipitate Substances 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 34
- 230000006872 improvement Effects 0.000 description 18
- 238000005275 alloying Methods 0.000 description 9
- 238000013461 design Methods 0.000 description 7
- 229910001566 austenite Inorganic materials 0.000 description 6
- 238000005728 strengthening Methods 0.000 description 6
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 5
- 239000000956 alloy Substances 0.000 description 5
- 238000001556 precipitation Methods 0.000 description 5
- 238000011160 research Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 4
- 229910000720 Silicomanganese Inorganic materials 0.000 description 4
- 238000010079 rubber tapping Methods 0.000 description 4
- 229910001208 Crucible steel Inorganic materials 0.000 description 3
- 239000010953 base metal Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000003993 interaction Effects 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 230000006911 nucleation Effects 0.000 description 3
- 238000010899 nucleation Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 238000005482 strain hardening Methods 0.000 description 3
- 229910000604 Ferrochrome Inorganic materials 0.000 description 2
- 229910001309 Ferromolybdenum Inorganic materials 0.000 description 2
- 229910000592 Ferroniobium Inorganic materials 0.000 description 2
- 229910001200 Ferrotitanium Inorganic materials 0.000 description 2
- 229910001199 N alloy Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- SKKMWRVAJNPLFY-UHFFFAOYSA-N azanylidynevanadium Chemical compound [V]#N SKKMWRVAJNPLFY-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- ZFGFKQDDQUAJQP-UHFFFAOYSA-N iron niobium Chemical compound [Fe].[Fe].[Nb] ZFGFKQDDQUAJQP-UHFFFAOYSA-N 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 241001062472 Stokellia anisodon Species 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- -1 on one hand Inorganic materials 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0075—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rods of limited length
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/10—Supplying or treating molten metal
- B22D11/11—Treating the molten metal
- B22D11/114—Treating the molten metal by using agitating or vibrating means
- B22D11/115—Treating the molten metal by using agitating or vibrating means by using magnetic fields
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/072—Treatment with gases
-
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
-
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/005—Heat treatment of ferrous alloys containing Mn
-
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/008—Heat treatment of ferrous alloys containing Si
-
- 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
- C21D8/06—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
- C21D8/065—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires of ferrous alloys
-
- 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
- C21D8/06—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
- C21D8/08—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires for concrete reinforcement
-
- 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
-
- 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
-
- 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
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- 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
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
-
- 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
- C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
-
- 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
- C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
-
- 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
-
- 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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/002—Bainite
-
- 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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/005—Ferrite
-
- 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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/009—Pearlite
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Heat Treatment Of Steel (AREA)
- Continuous Casting (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
Description
Claims (17)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201910434471.6A CN110129675B (zh) | 2019-05-23 | 2019-05-23 | 高强钢筋及其生产方法 |
US17/613,917 US20220220573A1 (en) | 2019-05-23 | 2019-07-22 | High-strength steel bar and production method thereof |
JP2021570284A JP7348310B2 (ja) | 2019-05-23 | 2019-07-22 | 高強度鉄筋及びその製造方法 |
EP19929629.4A EP3974555A4 (en) | 2019-05-23 | 2019-07-22 | HIGH STRENGTH STEEL BAR AND PRODUCTION METHOD THEREOF |
PCT/CN2019/096977 WO2020232818A1 (zh) | 2019-05-23 | 2019-07-22 | 高强钢筋及其生产方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201910434471.6A CN110129675B (zh) | 2019-05-23 | 2019-05-23 | 高强钢筋及其生产方法 |
Publications (2)
Publication Number | Publication Date |
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CN110129675A CN110129675A (zh) | 2019-08-16 |
CN110129675B true CN110129675B (zh) | 2020-08-28 |
Family
ID=67572580
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN201910434471.6A Active CN110129675B (zh) | 2019-05-23 | 2019-05-23 | 高强钢筋及其生产方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20220220573A1 (zh) |
EP (1) | EP3974555A4 (zh) |
JP (1) | JP7348310B2 (zh) |
CN (1) | CN110129675B (zh) |
WO (1) | WO2020232818A1 (zh) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3521254A1 (en) * | 2018-02-06 | 2019-08-07 | AGC Glass Europe | Method for manufacturing a coated chemically strengthened glass article |
CN110592472A (zh) * | 2019-08-28 | 2019-12-20 | 江苏省沙钢钢铁研究院有限公司 | 一种高强耐火抗震钢筋及生产方法 |
CN112941420B (zh) * | 2019-11-26 | 2022-09-13 | 武汉昆伦特钢装备科技开发有限公司 | 一种高强度耐冲击耐热耐低温的合金钢及制造工艺 |
CN111172459A (zh) * | 2020-01-19 | 2020-05-19 | 江苏省沙钢钢铁研究院有限公司 | 一种hrb600e钒钛微合金化高强抗震热轧钢筋 |
CN111570537B (zh) * | 2020-05-22 | 2022-02-11 | 江苏联峰实业有限公司 | 一种提高钢筋强度及其断裂韧性的热轧工艺 |
CN113278885A (zh) * | 2021-05-07 | 2021-08-20 | 石横特钢集团有限公司 | 一种液化天然气储罐用低温钢筋用坯冶炼工艺及其生产方法 |
CN113388781B (zh) * | 2021-05-28 | 2022-03-04 | 广西柳钢华创科技研发有限公司 | 高速棒材生产hrb600e螺纹钢筋的方法及高速棒材生产的hrb600e螺纹钢筋 |
CN114717477B (zh) * | 2021-06-10 | 2022-12-06 | 广西柳钢华创科技研发有限公司 | 抗拉强度700MPa以上的HRB400E普速热轧带肋钢筋 |
CN114836686B (zh) * | 2021-06-10 | 2022-09-13 | 广西柳钢华创科技研发有限公司 | 强屈比大于1.26的hrb600e普速热轧带肋钢筋 |
CN114790532B (zh) * | 2022-06-22 | 2022-09-02 | 江苏省沙钢钢铁研究院有限公司 | 一种合金耐蚀钢筋及其制备方法 |
CN115181909A (zh) * | 2022-07-22 | 2022-10-14 | 重庆钢铁股份有限公司 | 一种低成本hrb400e高强度抗震钢筋生产方法 |
Citations (2)
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CN102732787A (zh) * | 2012-07-20 | 2012-10-17 | 江苏省沙钢钢铁研究院有限公司 | 一种600MPa级抗震螺纹钢筋及其制造方法 |
CN102796962A (zh) * | 2012-09-14 | 2012-11-28 | 武钢集团昆明钢铁股份有限公司 | 铌钛硼微合金hrb600高强度抗震钢筋及其制备 |
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JPS5887222A (ja) * | 1981-11-19 | 1983-05-25 | Kobe Steel Ltd | 降伏棚比の大きい高強度鉄筋用鋼の製造法 |
JPS62142725A (ja) * | 1985-12-16 | 1987-06-26 | Kawasaki Steel Corp | 高強度鋼線用線材の製造方法 |
JPH10121200A (ja) * | 1996-08-26 | 1998-05-12 | Sumitomo Metal Ind Ltd | 高強度剪断補強筋用鋼材及びその製造方法 |
TW512175B (en) * | 2000-04-04 | 2002-12-01 | Nippon Steel Corp | Hot-rolled steel wire and rod used for machine structural use without annealing and method for producing the same |
US20110236696A1 (en) | 2010-03-25 | 2011-09-29 | Winky Lai | High strength rebar |
CN102071357B (zh) | 2011-01-05 | 2013-07-31 | 武钢集团昆明钢铁股份有限公司 | 富氮铌钒微合金化500MPa、550MPa高强度抗震钢筋的冶炼方法 |
JP5486634B2 (ja) * | 2012-04-24 | 2014-05-07 | 株式会社神戸製鋼所 | 冷間加工用機械構造用鋼及びその製造方法 |
CN102703813B (zh) | 2012-06-27 | 2014-01-15 | 攀枝花钢城集团有限公司 | 钒钛复合微合金化钢筋及其生产方法 |
CN103409683B (zh) | 2013-08-28 | 2015-05-20 | 武汉钢铁(集团)公司 | 一种600MPa热轧带肋钢筋及其生产方法 |
JP6297960B2 (ja) | 2014-10-03 | 2018-03-20 | 株式会社神戸製鋼所 | 鉄筋用線材又は棒鋼、並びにその製造方法 |
CN104451410B (zh) * | 2014-12-18 | 2017-04-12 | 马钢(集团)控股有限公司 | 一种600MPa级高强钢筋用钢及其热机轧制方法 |
JP6149951B2 (ja) | 2015-01-29 | 2017-06-21 | Jfeスチール株式会社 | 鉄筋用鋼材およびその製造方法 |
-
2019
- 2019-05-23 CN CN201910434471.6A patent/CN110129675B/zh active Active
- 2019-07-22 US US17/613,917 patent/US20220220573A1/en active Pending
- 2019-07-22 EP EP19929629.4A patent/EP3974555A4/en active Pending
- 2019-07-22 JP JP2021570284A patent/JP7348310B2/ja active Active
- 2019-07-22 WO PCT/CN2019/096977 patent/WO2020232818A1/zh unknown
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102732787A (zh) * | 2012-07-20 | 2012-10-17 | 江苏省沙钢钢铁研究院有限公司 | 一种600MPa级抗震螺纹钢筋及其制造方法 |
CN102796962A (zh) * | 2012-09-14 | 2012-11-28 | 武钢集团昆明钢铁股份有限公司 | 铌钛硼微合金hrb600高强度抗震钢筋及其制备 |
Also Published As
Publication number | Publication date |
---|---|
JP2022534102A (ja) | 2022-07-27 |
US20220220573A1 (en) | 2022-07-14 |
EP3974555A4 (en) | 2022-04-13 |
CN110129675A (zh) | 2019-08-16 |
WO2020232818A1 (zh) | 2020-11-26 |
JP7348310B2 (ja) | 2023-09-20 |
EP3974555A1 (en) | 2022-03-30 |
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