CN103451525A - Corrosion-resistant hot-rolled ribbed steel bar with yield strength not less than 600Mpa and production method thereof - Google Patents
Corrosion-resistant hot-rolled ribbed steel bar with yield strength not less than 600Mpa and production method thereof Download PDFInfo
- Publication number
- CN103451525A CN103451525A CN2013104086308A CN201310408630A CN103451525A CN 103451525 A CN103451525 A CN 103451525A CN 2013104086308 A CN2013104086308 A CN 2013104086308A CN 201310408630 A CN201310408630 A CN 201310408630A CN 103451525 A CN103451525 A CN 103451525A
- Authority
- CN
- China
- Prior art keywords
- corrosion
- steel bar
- steel
- rolled ribbed
- resistant hot
- 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.)
- Granted
Links
Images
Landscapes
- Treatment Of Steel In Its Molten State (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
The invention relates to a corrosion-resistant hot-rolled ribbed steel bar with yield strength not less than 600Mpa. The corrosion-resistant hot-rolled ribbed steel bar comprises the following components in percentage by weight: 0.17-0.28% of C, 0.50-0.90% of Si, 0.70-1.50% of Mn, 0.04-0.009% of P, not more than 0.015% of S, 0.08-0.15% of V and 0.025-0.045% of Nb. A production process comprises the following steps: desulfurizing molten iron; performing top and bottom combined blowing by virtue of a converter; refining by virtue of an argon station; refining by an LF (ladle furnace); performing continuous casting; stacking and cooling to a room temperature; heating a cast blank; performing rough rolling and finish rolling; naturally cooling to the room temperature. Compared with a steel bar with an epoxy resin coating, the corrosion-resistant hot-rolled ribbed steel bar has no defect of acceleration of corrosion rate caused by shedding of the coating; compared with the steel bar made of stainless steel, the corrosion-resistant hot-rolled ribbed steel bar has the advantage that the content of Cr is greatly reduced; compared with the ordinary steel bar, the corrosion-resistant hot-rolled ribbed steel bar has the advantage that the resistance to Cl ion corrosion is above 2 times higher than that of the ordinary steel bar; only the refining by virtue of the LF is additionally performed in an existing 400MPa grade steel bar process line, the increase in per ton of steel does not exceed 30 yuan, and then the production can be met.
Description
Technical field
The present invention relates to a kind of reinforcing bar and production method thereof, belong to particularly a kind of Ribbed Bar and production method thereof, be particularly useful for putting forward by vanadium niobium micro-alloy intensifying technology corrosion-resistant hot rolled ribbed steel bar and the production method of high-intensity yield strength >=600Mpa.
Background technology
Along with the development of domestic construction engineering to maximization, large load direction, the operating efficiency of building structure, energy-conserving and environment-protective problem have caused common concern, more and more higher to the requirement of building iron use properties.The HRB600 corrosion-resistant steel bar is the starting material of manufacturing large project, high strength civil construction project.With a large amount of HRB400 reinforcing bars that use of current domestic construction industry, compare, the HRB600 corrosion-resistant steel bar is in plasticity decline situation by a small margin, and intensity level improves a lot; Yield strength has improved 200MPa, and tensile strength has improved 190MPa.Substitute the HRB400 hot rolled ribbed steel bar with it in engineering construction, but saving steel 28%.Its application, can reduce the amount of reinforcement of construction in a large number, reduces difficulty of construction, improves construction quality, and increase substantially security and the work-ing life of engineering.
Enquiry data shows both at home and abroad, and the reinforcement corrosion of using in civil construction project is serious.The total corrosion loss of iron and steel in U.S. every year accounts for 4.2% of gross national product (GDP).The reinforcing bar of use in Infrastructure, the year financial loss of its corrosion failure just reaches 1,500 hundred million dollars.Japan's transportation economizes 103 the concrete sea port dock situations that check, finds to use the harbour more than 20 years, has sizable along the muscle rust crack.Australia is investigated 62 seashore concrete structures, and the endurance issues of the finding the seashore concrete structure all serious corrosion of reinforcing bar is relevant.The loss that China is caused by reinforcement corrosion is also very serious, in the investigation that 27Zuo harbour, East China, China south China concrete structure is carried out, finds that the structure deteriorate that the corrosion of invar muscle causes accounts for 74%.1981, to the l8 seat, use the result of Reinforced Concrete Dock investigation in 7～25 years to show, steel bar corrosion or non-resistantly account for 89%.What occur that time of corrosion and destruction has is only 5～10 years, and these structures all do not reach the design reference period requirement work-ing life basically.Due to the steel bar corrosion that atmosphere and marine atmosphere cause, make the destruction of concrete structure, be acknowledged as the major cause that causes the coastal engineering destroying concrete structure.
China is in the sixties in last century, just starts to carry out the corrosion resistance nature research of steel, developed so far high weatherproof structure steel, the weathering steel kinds such as weather resisting steel, hull structure and offshore platform steel, steel for container for rail truck.The resistance to atmospheric corrosion of weather-resistant steel plate improves more than 2 times than ordinary steel.Yet corrosion-resistant steel bar for building, application at home and abroad at present seldom.
Through retrieval, the patent documentation that Chinese Patent Application No. is CN200910243828.9, disclose " a kind of high-strength low-alloy steel bar of Cl-corrosion resistant and production method ", but yield strength is the 400MPa level, can not meet the demand of existing market.
The patent documentation that Chinese Patent Application No. is CN200710133597.7, disclose " a kind of containing steel and production technique thereof for the vanadium high-strength corrosion-resistant steel bar ", but yield strength is the 400MPa level, can not meet the demand of existing market.
Summary of the invention
The deficiency of the growth requirement that the present invention is directed to yield strength that prior art exists and be 400 MPa levels and can not satisfying the market, provide a kind of As rolled yield strength more than 600MPa, anti-Cl ion etching ability is strong, and utilize current 400MPa grade reinforcing steel production line, also without corrosion-resistant hot rolled ribbed steel bar and the production method of adding or transform the yield strength >=600Mpa of any equipment.
Realize the measure of above-mentioned purpose:
The corrosion-resistant hot rolled ribbed steel bar of yield strength >=600Mpa, its component and weight percent content are: C:0.17～0.28%, Si:0.50～0.90%, Mn:0.70～1.50%, P:0.04～009%, S<=0.015%, V:0.08～0.15%, Nb:0.025～0.045%, Tb:0.01～1.0%, all the other are Fe and impurity element.
Further: being added with weight percent is Mo≤0.5% or B: 0.0001～0.005% or overall control be no more than these two kinds of elements of 1.0% compound.
The method of the corrosion-resistant hot rolled ribbed steel bar of production yield strength >=600Mpa, its step:
1) desulfurizing iron: adopt spray magnesium powder sulfur removal technology, and control molten steel sulfur content [S]≤0.010%;
2) converter top bottom blowing: when tap to the molten steel gross weight 1/4 the time, add ferro-silico-manganese according to 21～24 kg/tonnes of steel in molten steel, according to 1.3 ~ 1.7 kg/tonnes of steel, add silicon carbide to carry out deoxidation, add 1.8 ~ 2.5 kilograms of vanadium iron, 0.6 ~ 1.0 kilogram of ferro-niobium, 0.1～0.3 kilogram of carbon dust, 10～20 kilograms of ferrochrome, 2.0～18 kilograms of ferro tantalums by the ton steel after deoxidation, and the chrome molybdenum that is no more than 1 kg/tonne of steel, when molten steel measure to the molten steel gross weight 3/4 the time, the alloy that add and carburelant must all add;
3) the argon station is concise: trimming also is blown into argon gas, and argon flow amount is at 7 ~ 10Nm3/ minute, and argon blowing time is 3～15 minutes;
4) LF stove refining: to being blown into pressure in stove, be the argon gas that 0.5～0.8MPa, flow are 7.0～10.0Nm3/Min, argon blowing time is not less than 15 minutes, is not less than 10 minutes heat-up time;
5) carry out continuous casting: adopt large tank long nozzle and crystallizer submersed nozzle to protect cast; Middle bag covering slag adopts basic powder, and crystallizer protecting residue adopts low-carbon steel protecting slag; Middle Baogang water temp is controlled at 1530～1545 ℃; Casting speed is controlled at 1.6～1.8 m/mins;
6) carry out cooling: stacking is cooled to room temperature;
7) strand heating: control the soaking zone temperature at 1150～1300 ℃, be not less than 100 minutes heat-up time;
8) roughing and finish rolling: control the roughing start rolling temperature at 1050～1150 ℃; Control the finish rolling finishing temperature and be no more than 1100 ℃;
9) naturally cool to room temperature.
The effect of each element and master operation in the present invention
C: as a kind of economical strengthening element, be dissolved in matrix, can play the solution strengthening left and right, therefore can not be too low, so the scope of selection C is 0.17～0.28%.
Si: be a kind of displacement strengthening element of cheapness, can significantly improve the intensity of steel, but the Si too high levels can affect the welding property of steel, so the scope of selection Si is 0.5～0.9%.
Mn: significantly reduce the transformation temperature of steel, by the controlled rolling process, crystal grain thinning, comprehensively improve the over-all properties of steel, but the too high meeting of Mn causes weldability and the hot deterioration of welded heat affecting zone, so the scope of selecting Mn is 0.7～1.5%;
P: improve the corrosion resistance nature element of steel, reduce the plasticity of material but too high levels will cause segregation, select the scope 0.04～0.09% of P.
S: as harmful element, require in theory its content more low better, but consider situ production cost reason,, the Fan Wei of selection S<=0.015%.
V: be microalloyed steel the most frequently used be also one of the most effective strengthening element.The effect of vanadium is to affect tissue and the performance of steel by forming VN, V (CN), and it is mainly Precipitation in the ferrite of austenite grain boundary, refinement ferrite crystal grain, the intensity of increase steel.After adding vanadium in steel, more than intensity can increase by 150 MPa.This effect of vanadium, the steel of delivering goods for hot rolling seem particularly important.In the present invention, if the content of vanadium lower than 0.12%, can produce intensity, do not reach the 600MPa rank, if higher than 0.15%, can make the reinforcing bar surplus capacity excessive and cause alloy waste, therefore it is controlled to 0.08～0.15%.
Nb: as crystal grain thinning and precipitation strength element, can improve the intensity of steel, no longer increase but its content surpasses its result a certain amount of the time, so the scope of selecting Nb is 0.025～0.045%.
Cr: improve the element of anti-seawater corrosion ability, easily at interior rusty scale, carry out enrichment, so select Cr≤1.0%;
Cu: improve the corrosion resistance element, too high meeting causes the intergranular segregation and causes embrittlement of grain boundaries, so the scope of selection Cu is 0.3%～0.6%;
Ni: improve the corrosion resistance element, improve the intensity of steel, its too high levels not only raises the cost, and easily enrichment and cause that oxide skin adheres under oxide skin, so the scope of selecting Ni is 0.1%～0.4%;
Mo: improve the corrosion resistance element, but after surpassing certain content, effect no longer increases, therefore select Mo≤0.5;
B: too high meeting causes the intergranular segregation and causes embrittlement of grain boundaries, so the scope of selection B is 0.0001～0.005%;
Tb: improve the corrosion resistance element, improve the intensity of steel, its too high levels not only raises the cost, and range of choice is 0.01～1.0%;
The control reason of main technique: the present invention utilizes the vanadium Nb-microalloying to improve the intensity of reinforcing bar, adds the corrosive nature that corrosion-resistant element improves steel, improves the matrix current potential, by increasing LF stove refinery practice minimizing steel inclusion, reaches the reduction source of corrosion.
The present invention compares with existing Epoxy Resin Coated Steel Bars, without the brushwork epoxy resin coating, does not more have coating shedding and the shortcoming that causes erosion rate to accelerate; With stainless steel rebar, compare, a large amount of minimizing added the cost pressure that precious alloy Cr brings, and just added a small amount of P, Cu, Ni, Cr microalloy element, and its total content<2% improves corrosion resistance nature; With regular reinforcement, compare, its anti-Cl ion etching ability is more than 2 times of regular reinforcement, and, on current 400MPa grade reinforcing steel production line, only attaching the refining of LF stove increases, the increase of ton steel is no more than 30 yuan, just can meet the production of 600MPa level corrosion-resistant steel bar.The present invention forbids water-cooled or get wet.
The accompanying drawing explanation
Accompanying drawing is metallographic structure figure of the present invention.
Embodiment
Below the present invention is described in detail:
The value list that table 1 is various embodiments of the present invention and Comparative Examples;
The main technologic parameters list that table 2 is various embodiments of the present invention and Comparative Examples;
Table 3 is various embodiments of the present invention and the list of Comparative Examples Performance Detection situation.
Various embodiments of the present invention are according to following steps production:
1) desulfurizing iron: adopt spray magnesium powder sulfur removal technology, and control molten steel sulfur content [S]≤0.010%;
2) converter top bottom blowing: when tap to the molten steel gross weight 1/4 the time, add ferro-silico-manganese according to 21～24 kg/tonnes of steel in molten steel, according to 1.3 ~ 1.7 kg/tonnes of steel, add silicon carbide to carry out deoxidation, add 1.8 ~ 2.5 kilograms of vanadium iron, 0.6 ~ 1.0 kilogram of ferro-niobium, 0.1～0.3 kilogram of carbon dust, 10～20 kilograms of ferrochrome, 2.0～18 kilograms of ferro tantalums by the ton steel after deoxidation, and the chrome molybdenum that is no more than 1 kg/tonne of steel, when molten steel measure to the molten steel gross weight 3/4 the time, the alloy that add and carburelant must all add;
3) the argon station is concise: trimming also is blown into argon gas, and argon flow amount is at 7 ~ 10Nm3/ minute, and argon blowing time is 3～15 minutes;
4) LF stove refining: to being blown into pressure in stove, be the argon gas that 0.5～0.8MPa, flow are 7.0～10.0Nm3/Min, argon blowing time is not less than 15 minutes, is not less than 10 minutes heat-up time;
5) carry out continuous casting: adopt large tank long nozzle and crystallizer submersed nozzle to protect cast; Middle bag covering slag adopts basic powder, and crystallizer protecting residue adopts low-carbon steel protecting slag; Middle Baogang water temp is controlled at 1530～1545 ℃; Casting speed is controlled at 1.6～1.8 m/mins;
6) carry out cooling: stacking is cooled to room temperature;
7) strand heating: control the soaking zone temperature at 1150～1300 ℃, be not less than 100 minutes heat-up time;
8) roughing and finish rolling: control the roughing start rolling temperature at 1050～1150 ℃; Control the finish rolling finishing temperature and be no more than 1100 ℃;
9) naturally cool to room temperature.
The chemical composition of table 1 various embodiments of the present invention and Comparative Examples (wt%)
Table 2 various embodiments of the present invention and Comparative Examples technique significant parameter are controlled list ()
Table 2 various embodiments of the present invention and Comparative Examples controlled rolling process significant parameter are controlled (two)
Table 3 various embodiments of the present invention and Comparative Examples mechanical properties test result contrast list
Corrosion rate test conditions in table 3: carry out week soaking experiment, experimental solutions is 3%NaCl, 45 ± 2 ℃ of experimental temperatures, and relative humidity 70 ± 5%, soak wheel speed 1 circle week/60 minutes, and etching time is respectively 216 hours (corrosion rate 1) and 288 hours (corrosion rate 2).
As can be seen from Table 3, the composition of the present invention's design all can meet 600Mpa corrosion-resistant steel bar performance, and the more current common 600Mpa grade reinforcing steel of its corrosion rate has reduced more than 70%, and the drawn test, breaks on mother metal, illustrates that welding property is good.
The present invention forbids with water cooling or touches water.
Above-described embodiment only exemplifies for the best, and is not the restriction to embodiments of the present invention.
Claims (3)
1. the corrosion-resistant hot rolled ribbed steel bar of yield strength >=600Mpa, its component and weight percent content are: C:0.17～0.28%, Si:0.50～0.90%, Mn:0.70～1.50%, P:0.04～009%, S<=0.015%, V:0.08～0.15%, Nb:0.025～0.045%, Tb:0.01～1.0%, all the other are Fe and impurity element.
2. the corrosion-resistant hot rolled ribbed steel bar of yield strength >=600Mpa as claimed in claim 1, it is characterized in that: being added with weight percent is Mo≤0.5% or B: 0.0001～0.005% or total weight percent control the compound of these two kinds of elements of being no more than 1.0%.
3. produce the method for the corrosion-resistant hot rolled ribbed steel bar of yield strength >=600Mpa as claimed in claim 1, its step:
1) desulfurizing iron: adopt spray magnesium powder sulfur removal technology, and control molten steel sulfur content [S]≤0.010%;
2) converter top bottom blowing: when tap to the molten steel gross weight 1/4 the time, add ferro-silico-manganese according to 21～24 kg/tonnes of steel in molten steel, according to 1.3 ~ 1.7 kg/tonnes of steel, add silicon carbide to carry out deoxidation, add 1.8 ~ 2.5 kilograms of vanadium iron, 0.6 ~ 1.0 kilogram of ferro-niobium, 0.1～0.3 kilogram of carbon dust, 10～20 kilograms of ferrochrome, 2.0～18 kilograms of ferro tantalums by the ton steel after deoxidation, and the chrome molybdenum that is no more than 1 kg/tonne of steel, when molten steel measure to the molten steel gross weight 3/4 the time, the alloy that add and carburelant must all add;
3) the argon station is concise: trimming also is blown into argon gas, and argon flow amount is at 7 ~ 10Nm3/ minute, and argon blowing time is 3～15 minutes;
4) LF stove refining: to being blown into pressure in stove, be the argon gas that 0.5～0.8MPa, flow are 7.0～10.0Nm3/Min, argon blowing time is not less than 15 minutes, is not less than 10 minutes heat-up time;
5) carry out continuous casting: adopt large tank long nozzle and crystallizer submersed nozzle to protect cast; Middle bag covering slag adopts basic powder, and crystallizer protecting residue adopts low-carbon steel protecting slag; Middle Baogang water temp is controlled at 1530～1545 ℃; Casting speed is controlled at 1.6～1.8 m/mins;
6) carry out cooling: stacking is cooled to room temperature;
7) strand heating: control the soaking zone temperature at 1150～1300 ℃, be not less than 100 minutes heat-up time;
8) roughing and finish rolling: control the roughing start rolling temperature at 1050～1150 ℃; Control the finish rolling finishing temperature and be no more than 1100 ℃;
9) naturally cool to room temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310408630.8A CN103451525B (en) | 2013-09-10 | 2013-09-10 | Corrosion-resistant hot-rolled ribbed steel bar with yield strength not less than 600Mpa and production method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310408630.8A CN103451525B (en) | 2013-09-10 | 2013-09-10 | Corrosion-resistant hot-rolled ribbed steel bar with yield strength not less than 600Mpa and production method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103451525A true CN103451525A (en) | 2013-12-18 |
| CN103451525B CN103451525B (en) | 2015-05-13 |
Family
ID=49734354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310408630.8A Expired - Fee Related CN103451525B (en) | 2013-09-10 | 2013-09-10 | Corrosion-resistant hot-rolled ribbed steel bar with yield strength not less than 600Mpa and production method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103451525B (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103898403A (en) * | 2014-04-09 | 2014-07-02 | 武汉钢铁(集团)公司 | HRB500 hot-rolled belt rib antiseismic steel bar and preparation method thereof |
| CN103898407A (en) * | 2014-04-09 | 2014-07-02 | 武汉钢铁(集团)公司 | 600MPa hot-rolled ribbed steel bar and preparation method thereof |
| CN103981446A (en) * | 2014-03-26 | 2014-08-13 | 江苏省沙钢钢铁研究院有限公司 | Bainite type 700-MPa-grade twisted steel and production method thereof |
| CN104233096A (en) * | 2014-09-20 | 2014-12-24 | 唐山市德龙钢铁有限公司 | Method used for producing 400 MPa level hot rolled ribbed steel bar and capable of reducing alloy cost |
| CN104451410A (en) * | 2014-12-18 | 2015-03-25 | 马钢(集团)控股有限公司 | Steel for 600MPa-level high-strength steel bars and thermal mechanical rolling method thereof |
| CN104946996A (en) * | 2015-05-28 | 2015-09-30 | 武汉钢铁(集团)公司 | Alkali corrosion resistance high strength steel and production method thereof |
| CN104946977A (en) * | 2015-05-28 | 2015-09-30 | 武汉钢铁(集团)公司 | Low temperature-resistant high strength anchor bar steel and production method thereof |
| CN105543667A (en) * | 2016-01-20 | 2016-05-04 | 广西丛欣实业有限公司 | Corrosion-resistant reinforcing bar |
| CN107723603A (en) * | 2017-11-29 | 2018-02-23 | 安徽工业大学 | Yield strength 500MPa levels corrosion-resistant steel bar and manufacture method |
| CN108913990A (en) * | 2018-06-20 | 2018-11-30 | 河钢股份有限公司承德分公司 | A kind of 600MPa grade high-plasticity anchor pole reinforcing bar and production method |
| CN112195394A (en) * | 2020-09-01 | 2021-01-08 | 陕钢集团产业创新研究院有限公司 | MG600 grade anchor rod steel with yield ratio less than or equal to 0.8 and production method thereof |
| CN113061805A (en) * | 2021-03-12 | 2021-07-02 | 盐城市联鑫钢铁有限公司 | 600 MPa-grade corrosion-resistant rare earth reinforcing steel bar and production method thereof |
| CN114058770A (en) * | 2021-11-02 | 2022-02-18 | 阳春新钢铁有限责任公司 | Production method of HRB600E high-strength anti-seismic steel bar |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0995735A (en) * | 1995-10-04 | 1997-04-08 | Sumitomo Metal Ind Ltd | Production of steel for reinforcing bar excellent in earthquake resistance |
| CN102383033A (en) * | 2011-11-08 | 2012-03-21 | 河北钢铁股份有限公司承德分公司 | 600-MPa grade vanadium-containing high-strength hot-rolled steel bar and production method thereof |
| CN102732787A (en) * | 2012-07-20 | 2012-10-17 | 江苏省沙钢钢铁研究院有限公司 | 600MPa level quake-proof twisted steel and manufacturing method thereof |
| CN102796962A (en) * | 2012-09-14 | 2012-11-28 | 武钢集团昆明钢铁股份有限公司 | Niobium, titanium and boron microalloy hot-rolled ribbed bar (HRB) 600 high-performance aseismic reinforcing bar and production thereof |
| CN102839318A (en) * | 2012-09-29 | 2012-12-26 | 莱芜钢铁集团有限公司 | HRB600 steel bar and production method thereof |
| CN103255349A (en) * | 2013-04-26 | 2013-08-21 | 江苏省沙钢钢铁研究院有限公司 | Small-size 600MPa-level aseimatic twisted steel and manufacturing method thereof |
-
2013
- 2013-09-10 CN CN201310408630.8A patent/CN103451525B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0995735A (en) * | 1995-10-04 | 1997-04-08 | Sumitomo Metal Ind Ltd | Production of steel for reinforcing bar excellent in earthquake resistance |
| CN102383033A (en) * | 2011-11-08 | 2012-03-21 | 河北钢铁股份有限公司承德分公司 | 600-MPa grade vanadium-containing high-strength hot-rolled steel bar and production method thereof |
| CN102732787A (en) * | 2012-07-20 | 2012-10-17 | 江苏省沙钢钢铁研究院有限公司 | 600MPa level quake-proof twisted steel and manufacturing method thereof |
| CN102796962A (en) * | 2012-09-14 | 2012-11-28 | 武钢集团昆明钢铁股份有限公司 | Niobium, titanium and boron microalloy hot-rolled ribbed bar (HRB) 600 high-performance aseismic reinforcing bar and production thereof |
| CN102839318A (en) * | 2012-09-29 | 2012-12-26 | 莱芜钢铁集团有限公司 | HRB600 steel bar and production method thereof |
| CN103255349A (en) * | 2013-04-26 | 2013-08-21 | 江苏省沙钢钢铁研究院有限公司 | Small-size 600MPa-level aseimatic twisted steel and manufacturing method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 曹重等: "微合金化控轧控冷钢筋纵向金相组织研究[1]", 《钢铁》 * |
| 邓雷等: "Nb-V不同微合金化对高强钢筋拉伸断裂行为的影响", 《材料热处理学报》 * |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103981446A (en) * | 2014-03-26 | 2014-08-13 | 江苏省沙钢钢铁研究院有限公司 | Bainite type 700-MPa-grade twisted steel and production method thereof |
| CN103981446B (en) * | 2014-03-26 | 2016-03-09 | 江苏省沙钢钢铁研究院有限公司 | A kind of bainite type 700MPa level Twisted Steel and production method thereof |
| CN103898403B (en) * | 2014-04-09 | 2016-06-29 | 武汉钢铁(集团)公司 | The hot-rolled ribbed anti-seismic steel bar of HRB500 level |
| CN103898407A (en) * | 2014-04-09 | 2014-07-02 | 武汉钢铁(集团)公司 | 600MPa hot-rolled ribbed steel bar and preparation method thereof |
| CN103898403A (en) * | 2014-04-09 | 2014-07-02 | 武汉钢铁(集团)公司 | HRB500 hot-rolled belt rib antiseismic steel bar and preparation method thereof |
| CN103898407B (en) * | 2014-04-09 | 2016-07-06 | 武汉钢铁(集团)公司 | 600MPa hot rolled ribbed bars and preparation method thereof |
| CN104233096A (en) * | 2014-09-20 | 2014-12-24 | 唐山市德龙钢铁有限公司 | Method used for producing 400 MPa level hot rolled ribbed steel bar and capable of reducing alloy cost |
| CN104451410A (en) * | 2014-12-18 | 2015-03-25 | 马钢(集团)控股有限公司 | Steel for 600MPa-level high-strength steel bars and thermal mechanical rolling method thereof |
| CN104946996B (en) * | 2015-05-28 | 2018-03-27 | 武汉钢铁有限公司 | A kind of high strength steel and its production method of alkali resistance corrosion |
| CN104946977A (en) * | 2015-05-28 | 2015-09-30 | 武汉钢铁(集团)公司 | Low temperature-resistant high strength anchor bar steel and production method thereof |
| CN104946996A (en) * | 2015-05-28 | 2015-09-30 | 武汉钢铁(集团)公司 | Alkali corrosion resistance high strength steel and production method thereof |
| CN105543667A (en) * | 2016-01-20 | 2016-05-04 | 广西丛欣实业有限公司 | Corrosion-resistant reinforcing bar |
| CN107723603A (en) * | 2017-11-29 | 2018-02-23 | 安徽工业大学 | Yield strength 500MPa levels corrosion-resistant steel bar and manufacture method |
| CN108913990A (en) * | 2018-06-20 | 2018-11-30 | 河钢股份有限公司承德分公司 | A kind of 600MPa grade high-plasticity anchor pole reinforcing bar and production method |
| CN112195394A (en) * | 2020-09-01 | 2021-01-08 | 陕钢集团产业创新研究院有限公司 | MG600 grade anchor rod steel with yield ratio less than or equal to 0.8 and production method thereof |
| CN112195394B (en) * | 2020-09-01 | 2022-02-18 | 陕钢集团产业创新研究院有限公司 | MG600 grade anchor rod steel with yield ratio less than or equal to 0.8 and production method thereof |
| CN113061805A (en) * | 2021-03-12 | 2021-07-02 | 盐城市联鑫钢铁有限公司 | 600 MPa-grade corrosion-resistant rare earth reinforcing steel bar and production method thereof |
| CN114058770A (en) * | 2021-11-02 | 2022-02-18 | 阳春新钢铁有限责任公司 | Production method of HRB600E high-strength anti-seismic steel bar |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103451525B (en) | 2015-05-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103451525B (en) | Corrosion-resistant hot-rolled ribbed steel bar with yield strength not less than 600Mpa and production method thereof | |
| EP3159424B1 (en) | Rebar and preparation method thereof | |
| KR102240599B1 (en) | Highly Corrosion-resistant, High Strength, Al-containing Weathering Steel Plate and Process of Manufacturing Same | |
| CN103361569B (en) | A kind of Ultralow temperature weather-proof structural steel plate and production method thereof | |
| CN112375995B (en) | 400 MPa-grade corrosion-resistant steel bar and production method thereof | |
| CN102732799B (en) | Acid corrosion resistant steel for soleplate in hull and production method thereof | |
| CN102127717A (en) | Cr-contained weathering steel with excellent toughness and high corrosion resistance | |
| CN103882346B (en) | R4 level mooring chain steel and preparation method thereof | |
| CN106435396B (en) | A kind of steel heavy plate for pressure vessels and its manufacturing method of high temperature resistant hydrogen sulfide corrosion resistant | |
| CN107034418A (en) | A kind of concrete 400MPa grades of anti-chlorine ion corrosion high tensile reinforcements and its production method | |
| CN100523254C (en) | Soldering not quenching and tempering steel plate in high intensity by large line energy, and manufacturing method | |
| CN103451561A (en) | Weather-resistant steel plate capable of performing high heat input welding and production method thereof | |
| CN103882307A (en) | Corrosion-resistant steel for cargo oil tank base plate of crude oil carrier | |
| CN112695247A (en) | Stress corrosion resistant low-alloy high-strength steel for ocean engineering and preparation method thereof | |
| CN104946996B (en) | A kind of high strength steel and its production method of alkali resistance corrosion | |
| CN104372246A (en) | 400 MPa-level tungstenic corrosion-resistant twisted steel and preparation method thereof | |
| CN104018081A (en) | Low-temperature resistant special steel bar and production method thereof | |
| CN117051326B (en) | Cr-Al high corrosion-resistant steel bar for marine building structure and preparation method thereof | |
| CN101660094B (en) | Large-linear energy welding low-alloy high-strength steel plate and manufacturing method thereof | |
| CN105274446B (en) | High chromium weathering steel and preparation method thereof | |
| CN100523253C (en) | Soldering low alloy steel plate in high intensity by large line energy, and manufacturing method | |
| CN102766809B (en) | Hot rolled strip steel with yield strength higher than 800MPa for mine rescue capsule and preparation method of hot rolled strip steel | |
| CN115341132B (en) | Corrosion-resistant 460 MPa-grade steel plate and production method thereof | |
| CN109023071B (en) | Neutral soil corrosion resistant steel for buried structure and manufacturing method thereof | |
| CN114807785B (en) | 390 MPa-grade corrosion-resistant steel plate and production 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 | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170712 Address after: 430083 Qingshan District, Hubei, Wuhan factory before the door No. 2 Patentee after: Wuhan iron and Steel Company Limited Address before: 430080 Wuhan, Hubei Friendship Road, No. 999, Wuchang Patentee before: Wuhan Iron & Steel (Group) Corp. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150513 Termination date: 20200910 |