CN102851580A - HRB600E aseismic reinforcement steel bar and production method thereof - Google Patents
HRB600E aseismic reinforcement steel bar and production method thereof Download PDFInfo
- Publication number
- CN102851580A CN102851580A CN2012103752627A CN201210375262A CN102851580A CN 102851580 A CN102851580 A CN 102851580A CN 2012103752627 A CN2012103752627 A CN 2012103752627A CN 201210375262 A CN201210375262 A CN 201210375262A CN 102851580 A CN102851580 A CN 102851580A
- Authority
- CN
- China
- Prior art keywords
- hrb600e
- steel bar
- seismic
- steel
- production method
- 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
Landscapes
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The invention provides an HRB600E aseismic reinforcement steel bar and a production method thereof. The reinforcement steel bar consists of the following elements in percentage by weight: 0.17-0.25 percent of C, 0.40-0.80 percent of Si, 1.10-1.50 percent of Mn, 0.07-0.11 percent of V, less than or equal to 0.035 percent of P, less than or equal to 0.035 percent of S, 0.017-0.023 percent of N and the balance of Fe and inevitable impurities. The production method comprises a steelmaking procedure, a continuous casing procedure and a steel rolling procedure. In a primary smelting procedure of the steelmaking procedure, molten steel in a ladle is deoxidized and alloyed, so that the finally-obtained HRB600E high-strength aseismic reinforcement steel bar contains 0.07-0.11 percent by weight of V and 0.017-0.023 percent by weight of N. The reinforcement steel bar has high yield strength, high tensile strength, high ratio of tensile strength to yield point and high specific elongation, meets the requirement of the aseismic reinforcement steel bar, and is low in production cost.
Description
Technical field
The present invention relates to a kind of reinforcing bar and production method thereof, particularly a kind of HRB600E anti-seismic steel bar and production method thereof.
Background technology
In recent years, along with taking place frequently of the geologic hazards such as earthquake, caused showing great attention to of building bound pair anti-seismic steel bar.The anti-seismic performance that improves reinforcing bar is mainly paid close attention to the yield strength (R of reinforcing bar
El), the strong flexor ratio R of raising reinforcing bar
m/ R
El, increase the percentage of total elongation of reinforcing bar under the maximum external force effect.Stablize the yield strength of reinforcing bar, it is controlled in certain scope, can make all steel bar stresses can both bear more uniformly strength.If the reinforcement property fluctuation range in the building structure somewhere is large, when destructive force surpasses the permission yield strength of reinforcing bar, and reinforcing bar does not also deform, and makes buildings can't form plastic hinge, then expendable permanent damage occurs in buildings, does not have the effect of antidetonation.Improve strong flexor ratio, be conducive to improve the safety margin of reinforcing bar, when buildings is subject to eaerthquake damage and deforms, reinforcing bar has absorbed energy and has not ruptured in the extension process, still can play the effect of reinforcement material in building structure, strong flexor ratio ratio is larger, and the energy of absorption is more, more can improve the ability that opposing destroys, require as follows to anti-seismic steel bar in sum: 1) yield strength of reinforcing bar wants high; 2) strong flexor ratio of reinforcing bar: R
m/ R
ElRatio be not less than 1.25; 3) the actual measurement yield strength of reinforcing bar is not more than 1.30 with the ratio of the yield strength eigenwert of standard code; 4) the maximum, force general extension of reinforcing bar is not less than 9%.
At present, most of enterprise also rests on HRB335E and HRB400E rank to the production of anti-seismic steel bar, the enterprise that can produce HRB500E also is not many especially, also do not find till now the relevant report of relevant HRB600E high-strength quake-proof reinforcing steel bar, only hold steel and reported the develop of relevant HRB600 with the Ji steel, and the content of micro alloying element V has reached 0.17% ~ 0.20% in the exploitation of HRB600 reinforcing bar, therefore cause the serious waste of alloying element, needed the rational reinforcing bar composition of research and suitable production technique to produce the low-cost HRB600E high-strength quake-proof reinforcing steel bar that satisfies performance requriements.
Summary of the invention
The object of the invention is to overcome the defective of prior art, a kind of HRB600E anti-seismic steel bar is provided.
Another object of the present invention is to provide a kind of production method of above-mentioned HRB600E anti-seismic steel bar.
In order to realize purpose of the present invention, a kind of HRB600E anti-seismic steel bar provided by the invention is by weight percentage by following elementary composition: C:0.17% ~ 0.25%; Si:0.40% ~ 0.80%; Mn:1.10% ~ 1.50%; V:0.07% ~ 0.11%; P≤0.035%; S≤0.035%; N:0.017-0.023%; All the other are Fe and inevitable impurity.
The technical scheme of the production method of above-mentioned HRB600E anti-seismic steel bar provided by the invention is as follows:
Comprise steel making working procedure, continuous casting working procedure and steel rolling process, in the first refining operation of described steel making working procedure, molten steel in the ladle is carried out deoxidation alloying, so that the final HRB600E anti-seismic steel bar that obtains contains 0.07% ~ 0.11% V and the N of 0.017-0.023% by weight percentage.
Preferably, described alloying is to tap to 1/5 ~ 1/3 o'clock at molten steel, begins will be used for adjusting the metal or alloy adding molten steel of molten steel composition, and taps to 3/5 ~ 4/5 o'clock at molten steel, adds the metal or alloy for the adjustment molten steel composition.
Described alloy for adjusting molten steel composition is silicomanganese, ferro-silicon, VN alloy and little nitrogen alloy preferably.Wherein, described little nitrogen alloy can be silicon nitride or nitrogenize silicomanganese.
In described steel rolling process, start rolling temperature is 1100 ℃ ~ 1200 ℃, and finishing temperature is 1020 ~ 1060 ℃, gently wears the control of water conservancy project skill after rolling to guarantee that upper cold bed temperature is between 940 ~ 970 ℃.
The yield strength R of described HRB600E anti-seismic steel bar
ElBe 600Mpa-750Mpa, strong flexor ratio R
m/ R
ElBe 1.25-1.35, unit elongation A is: 18%-21%, Stretching Agt are 9%-15%.
Beneficial effect of the present invention: the present invention has adopted to adopt when Composition Design and has added a small amount of expensive micro alloying element V, adopt simultaneously high nitrogen (N:0.017-0.023%), and employing is rolled the rear water conservancy project skill of gently wearing and is processed, when reducing production costs, control by high nitrogen, well guaranteed the strong flexor ratio of anti-seismic steel bar, made the performance of reinforcing bar more stable.The content of vanadium of HRB600E anti-seismic steel bar of the present invention has reduced about 30 ~ 40% than the content of the vanadium in the reinforcing bar of the yield strength of same level.HRB600E anti-seismic steel bar provided by the invention has the advantages such as high-yield strength, high-tensile, high yield ratio and high-elongation, wherein, and 600Mpa≤R
El≤ 750Mpa, 1.25≤R
m/ R
El≤ 1.35,18%≤A≤21%, and Stretching (Agt) 〉=9% have reached the requirement of anti-seismic steel bar.HRB600E anti-seismic steel bar of the present invention substitutes HRB335(E), HRB400(E), HRB500(E) grade reinforcing steel, can distinguish Saving steel amount 73.3%, 44.4% and 19.5%, have the realistic meaning of energy-saving and emission-reduction.In addition, can solve the problem of " fat beams and columns " in the building structure, increase the building usable floor area, make structure design more flexible, improve building and use function, increase building safety.In addition, the HRB600E reinforcing bar cost that the present invention produces is lower, uses for marketing and has established solid basis.
Embodiment
The invention will be further described below in conjunction with embodiment, but the present invention is not limited to this.Following per-cent all is weight percentage.
HRB600E anti-seismic steel bar provided by the invention is by weight percentage by following elementary composition:
C:0.17% ~ 0.25%; Si:0.40% ~ 0.80%; Mn:1.10% ~ 1.50%; V:0.07% ~ 0.11%; P≤0.035%; S≤0.035%; N:0.017-0.023%; All the other are Fe and inevitable impurity.
Above-mentioned anti-seismic steel bar is by weight percentage preferably by following elementary composition: C:0.17% ~ 0.24%; Si:0.45% ~ 0.78%; Mn:1.20% ~ 1.50%; V:0.09% ~ 0.11%; P≤0.035%; S≤0.035%; N:0.017-0.023%; All the other are Fe and inevitable impurity.
In the Composition Design process of reinforcing bar of the present invention, taken into full account C, Si, precipitation strength between the elements such as Mn and the V, relation between refined crystalline strengthening and the solution strengthening, consider simultaneously after the nitrogen pick-up, effect between nitrogen element and the vanadium, this composition adopts nitrogen content to surpass 0.015%, the V(CN of small and dispersed) separates out the quantity showed increased, so that the strengthening effect of V has obtained more fully performance, owing to separating out in a large number and having increased stabilization of austenite, promoted V(CN) austenite separating out at phase interface during the ferritic transformation, effectively organize ferrite to grow up, so that crystal grain is more tiny.Thereby guaranteed the perfect adaptation of reinforced steel bar strength and plasticity and toughness.
The concrete technical scheme of the production method of above-mentioned HRB600E anti-seismic steel bar provided by the invention is as follows: the method comprises steel making working procedure, continuous casting working procedure and steel rolling process, in the first refining operation of described steel making working procedure, molten steel in the ladle is carried out deoxidation alloying, so that comprise by weight 0.07% ~ 0.11% V and the N of 0.017-0.023% in the final HRB600E high-strength quake-proof reinforcing steel bar that obtains, preferred V content is 0.09% ~ 0.11%.Preferred tapping temperature is controlled at 1625 ~ 1645 ℃.
Described steel making working procedure comprises just refining operation such as employing converter or electrosmelting molten steel, ladle alloying and steel ladle bottom argon blowing etc.In the step of ladle alloying, make the N content of molten steel reach 0.017-0.023%, the content of V reaches 0.07% ~ 0.11%.For example, can realize above-mentioned purpose by adding VN alloy and little nitrogen alloy in molten steel.Preferably, to 1/5 ~ 1/3 o'clock, begin to be used for adjusting the metal or alloy adding molten steel of molten steel composition in the molten steel tapping, and tap to 3/5 ~ 4/5 o'clock at molten steel, add for the metal or alloy of adjusting molten steel composition.Described alloy for adjusting molten steel composition is silicomanganese, ferrosilicon, VN alloy and little nitrogen alloy, then carries out LF stove refining procedure further to remove sulphur in the molten steel, oxygen etc., removes the inclusion in the molten steel, thus cleaning molten steel.Wherein, described little nitrogen alloy can be silicon nitride or nitrogenize silicomanganese etc.
In steel rolling process, can get above-mentioned steel billet is rolled at 1100 ℃ ~ 1200 ℃ start rolling temperature, and be rolled in the finishing temperature that is not less than 1000 ℃, preferred finishing temperature is 1020 ~ 1060 ℃, then gently wear the control of water conservancy project skill to guarantee that upper cold bed temperature is not less than 930 ℃, preferably going up cold bed temperature is 940 ~ 970 ℃.Thereby obtain to satisfy the HRB600E high-strength quake-proof reinforcing steel bar of performance requriements.
The yield strength R of described HRB600E anti-seismic steel bar
ElBe 600Mpa-750Mpa, strong flexor ratio R
m/ R
ElBe 1.25-1.35, unit elongation A is 18%-21%, and Stretching Agt is 9%-15%.Therefore, meet the requirement of anti-seismic steel bar.Above mechanical property parameters is all measured based on GB/T228.1.
The specification of the HRB600E anti-seismic steel bar that the present invention obtains is Φ 12mm-Φ 32mm.
Illustrate in greater detail HRB600E anti-seismic steel bar of the present invention and production method thereof below in conjunction with specific embodiment.
Embodiment 1
The method of producing the HRB600E anti-seismic steel bar comprises steel making working procedure, continuous casting working procedure and steel rolling process.The below will be described the concrete steps of each operation.
In steel making working procedure, adopt converter or electrosmelting molten steel and ladle alloying.Tap out to 1/5 o'clock at molten steel, add successively silicomanganese, ferrosilicon, VN alloy, silicon nitride and nitrogenize silicomanganese, molten steel goes out to 4/5 o'clock it is all added, and makes in the molten steel composition that N content reaches 0.019%, V content reaches 0.105%; Tapping temperature is controlled at 1635 ℃ simultaneously.Then molten steel carries out refining through the LF stove.
In continuous casting working procedure, carry out the throwing moulding by continuous caster, thereby be shaped to 150mm * 150mm square billet, casting speed is 1.77m/s.
In steel rolling process, the steel of the moulding start rolling temperature at 1120 ℃ is rolled, and is rolled 1040 ℃ finishing temperature, then gently wear the control of water conservancy project skill, make that cold bed temperature is 950 ℃ on the finished product.Thereby obtain to satisfy the HRB600E high-strength quake-proof reinforcing steel bar of performance requriements, its concrete composition sees Table 1, and performance perameter sees Table 2.
Embodiment 2
The method of producing the HRB600E anti-seismic steel bar comprises steel making working procedure, continuous casting working procedure and steel rolling process.The below will be described the concrete steps of each operation.
In steel making working procedure, adopt converter or electrosmelting molten steel and ladle alloying.Tap out to 1/5 o'clock at molten steel, add successively silicomanganese, ferrosilicon, VN alloy and silicon nitride, molten steel goes out to 4/5 o'clock it is all added, and makes in the molten steel composition that N content reaches 0.021%, V content reaches 0.095%.Tapping temperature is controlled at 1630 ℃ simultaneously.Then molten steel carries out refining through the LF stove.
In continuous casting working procedure, carry out the throwing moulding by continuous caster, thereby be shaped to 150mm * 150mm square billet, casting speed is 1.80m/s.
In steel rolling process, the steel of the moulding start rolling temperature at 1140 ℃ is rolled, and is rolled 1030 ℃ finishing temperature, then gently wear the control of water conservancy project skill, make that cold bed temperature is 940 ℃ on the finished product.Thereby obtain to satisfy the HRB600E high-strength quake-proof reinforcing steel bar of performance requriements.Its concrete composition sees Table 1, and performance perameter sees Table 2.
Embodiment 3
The method of producing the HRB600E anti-seismic steel bar comprises steel making working procedure, continuous casting working procedure and steel rolling process.The below will be described the concrete steps of each operation.
In steel making working procedure, adopt converter or electrosmelting molten steel and ladle alloying.Tap out to 1/5 o'clock at molten steel, add successively silicomanganese, ferrosilicon, VN alloy and silicon nitride, molten steel goes out to 4/5 o'clock it is all added, and makes in the molten steel composition that N content reaches 0.023%, V content reaches 0.110%.Tapping temperature is controlled at 1640 ℃ simultaneously.Then molten steel carries out refining through the LF stove.
In continuous casting working procedure, carry out the throwing moulding by continuous caster, thereby be shaped to 150mm * 150mm square billet, casting speed is 1.79m/s.
In steel rolling process, the steel of moulding is rolled at the start rolling temperature at 1140 ℃, and is rolled 1060 ℃ finishing temperature, then gently wear the control of water conservancy project skill, make that cold bed temperature is 970 ℃ on the finished product.Thereby obtain to satisfy the HRB600E high-strength quake-proof reinforcing steel bar of performance requriements.Its concrete composition sees Table 1, and performance perameter sees Table 2.
Embodiment 4
The method of producing the HRB600E anti-seismic steel bar comprises steel making working procedure, continuous casting working procedure and steel rolling process.The below will be described the concrete steps of each operation.
In steel making working procedure, adopt converter or electrosmelting molten steel and ladle alloying.Tap out to 1/5 o'clock at molten steel, add successively silicomanganese, ferrosilicon, VN alloy and nitrogenize silicomanganese, molten steel goes out to 4/5 o'clock it is added fully, makes in the molten steel composition that N content reaches 0.017%, V content reaches 0.103%.Tapping temperature is controlled at 1637 ℃ simultaneously.Then molten steel carries out refining through the LF stove.
In continuous casting working procedure, carry out the throwing moulding by continuous caster, thereby be shaped to 150mm * 150mm square billet, casting speed is 1.81m/s.
In steel rolling process, the steel of moulding is rolled at the start rolling temperature at 1150 ℃, and is rolled 1056 ℃ finishing temperature, then gently wear the control of water conservancy project skill, make that cold bed temperature is 960 ℃ on the finished product.Thereby obtain to satisfy the HRB600E high-strength quake-proof reinforcing steel bar of performance requriements.Its concrete composition sees Table 1, and performance perameter sees Table 2.
The chemical composition of table 1 reinforcing bar of the present invention (wt%)
| Embodiment | C | Si | Mn | V | P | S | N |
| 1 | 0.17 | 0.60 | 1.35 | 0.105 | 0.018 | 0.022 | 0.019 |
| 2 | 0.24 | 0.48 | 1.47 | 0.095 | 0.020 | 0.019 | 0.021 |
| 3 | 0.22 | 0.75 | 1.20 | 0.110 | 0.016 | 0.018 | 0.023 |
| 4 | 0.19 | 0.78 | 1.48 | 0.103 | 0.021 | 0.020 | 0.017 |
The performance perameter of table 2 HRB600E anti-seismic steel bar of the present invention
As can be seen from Table 2, the yield strength R of the HRB600E anti-seismic steel bar of the enforcement 1-4 of the present invention's production
El〉=600Mpa, strong flexor ratio R
m/ R
El〉=1.25, unit elongation A 〉=18%; Stretching Agt 〉=9%, these performance index all are higher than the current standards requirement.This shows, HRB600E high-strength quake-proof reinforcing steel bar of the present invention satisfies standard-required fully, and larger having more than needed arranged.
In addition, it may be noted that, the content of vanadium of HRB600E high-strength quake-proof reinforcing steel bar of the present invention has reduced about 30 ~ 40% than the content of the vanadium in the reinforcing bar of the yield strength of same level, this has saved a large amount of little metal alloys, can also well satisfy simultaneously the requirement of the properties of high-strength quake-proof reinforcing steel bar, in addition, in the method for the invention, adopt high nitrogen technology and roll and gently wear the technology that water conservancy project skill combines and produce afterwards, take full advantage of V and N strengthening mechanism, significantly improved the properties of reinforcing bar, made yield strength R
ElIn the time of greater than 600Mpa, strong flexor ratio R
m/ R
ElGreater than 1.25, reinforcing bar of the present invention can be saved alloying element significantly, thereby has reduced production cost, has increased the competitiveness of product in market.
Claims (9)
1. a HRB600E anti-seismic steel bar is characterized in that, described anti-seismic steel bar is by weight percentage by following elementary composition: C:0.17% ~ 0.25%; Si:0.40% ~ 0.80%; Mn:1.10% ~ 1.50%; V:0.07% ~ 0.11%; P≤0.035%; S≤0.035%; N:0.017-0.023%; All the other are Fe and inevitable impurity.
2. HRB600E anti-seismic steel bar according to claim 1 is characterized in that, described anti-seismic steel bar is by weight percentage by following elementary composition: C:0.17% ~ 0.24%; Si:0.45% ~ 0.78%; Mn:1.20% ~ 1.50%; V:0.09% ~ 0.11%; P≤0.035%; S≤0.035%; N:0.017-0.023%; All the other are Fe and inevitable impurity.
3. HRB600E anti-seismic steel bar according to claim 1 is characterized in that, the yield strength R of described HRB600E anti-seismic steel bar
ElBe 600Mpa-750Mpa, strong flexor ratio R
m/ R
ElBe 1.25-1.35, unit elongation A is: 18%-21%, Stretching Agt are 9%-15%.
4. the production method of HRB600E anti-seismic steel bar claimed in claim 1, comprise steel making working procedure, continuous casting working procedure and steel rolling process, it is characterized in that, in the first refining operation of described steel making working procedure, molten steel in the ladle is carried out deoxidation alloying, so that the final HRB600E anti-seismic steel bar that obtains contains 0.07% ~ 0.11% V and the N of 0.017-0.023% by weight percentage.
5. the production method of HRB600E anti-seismic steel bar according to claim 4, it is characterized in that, described alloying is to 1/5 ~ 1/3 o'clock in the molten steel tapping, begin and to add molten steel for the metal or alloy of adjusting molten steel composition, and in molten steel tapping to 3/5 ~ 4/5 o'clock, add for the metal or alloy of adjusting molten steel composition.
6. the production method of HRB600E anti-seismic steel bar according to claim 5 is characterized in that, described alloy for adjusting molten steel composition is silicomanganese, ferro-silicon, VN alloy and little nitrogen alloy.
7. the production method of HRB600E anti-seismic steel bar according to claim 6 is characterized in that, described little nitrogen alloy is silicon nitride or nitrogenize silicomanganese.
8. the production method of HRB600E anti-seismic steel bar according to claim 4, it is characterized in that, in described steel rolling process, start rolling temperature is 1100 ℃ ~ 1200 ℃, finishing temperature is 1020 ~ 1060 ℃, gently wears the control of water conservancy project skill after rolling to guarantee that upper cold bed temperature is between 940 ~ 970 ℃.
9. the production method of HRB600E anti-seismic steel bar according to claim 4 is characterized in that, the yield strength R of described HRB600E anti-seismic steel bar
ElBe 600Mpa-750Mpa, strong flexor ratio R
m/ R
ElBe 1.25-1.35, unit elongation A is: 18%-21%, Stretching Agt are 9%-15%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210375262.7A CN102851580B (en) | 2012-09-29 | 2012-09-29 | HRB600E aseismic reinforcement steel bar and production method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210375262.7A CN102851580B (en) | 2012-09-29 | 2012-09-29 | HRB600E aseismic reinforcement steel bar and production method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102851580A true CN102851580A (en) | 2013-01-02 |
| CN102851580B CN102851580B (en) | 2014-04-09 |
Family
ID=47398551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210375262.7A Active CN102851580B (en) | 2012-09-29 | 2012-09-29 | HRB600E aseismic reinforcement steel bar and production method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102851580B (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103255349A (en) * | 2013-04-26 | 2013-08-21 | 江苏省沙钢钢铁研究院有限公司 | Small-size 600 MPa-level anti-seismic twisted steel and manufacturing method thereof |
| CN104328361A (en) * | 2014-09-28 | 2015-02-04 | 四川德胜集团钒钛有限公司 | Anti-seismic steel bar and preparation method thereof |
| CN104372247A (en) * | 2014-11-04 | 2015-02-25 | 武钢集团昆明钢铁股份有限公司 | 600MPa high-strength antiseismic coil rod twisted steel bar and preparation method thereof |
| CN104745969A (en) * | 2015-04-03 | 2015-07-01 | 甘肃酒钢集团宏兴钢铁股份有限公司 | HRB400E high-strength corrosion-resistant steel bar and production process thereof |
| CN105734418A (en) * | 2016-03-11 | 2016-07-06 | 宣化钢铁集团有限责任公司 | Low-temperature-resistant hot-rolled angle steel and preparation method thereof |
| CN106148816A (en) * | 2016-08-31 | 2016-11-23 | 广西盛隆冶金有限公司 | High-tenacity high-strength steel plate and preparation method thereof |
| CN107557653A (en) * | 2017-09-14 | 2018-01-09 | 马鞍山市兴达冶金新材料有限公司 | Micro- nitrogen alloy and its technique for producing high strength cast iron |
| CN107675078A (en) * | 2017-09-26 | 2018-02-09 | 阳春新钢铁有限责任公司 | High-yield-strength vanadium-nitrogen-containing steel material and production method and application thereof |
| CN110218952A (en) * | 2019-07-17 | 2019-09-10 | 山东钢铁股份有限公司 | A kind of finish rolling deformed bar and its production method |
| CN110541108A (en) * | 2019-07-26 | 2019-12-06 | 马鞍山钢铁股份有限公司 | nb and V composite 700MPa grade high-strength anti-seismic steel bar steel and production method thereof |
| CN111172459A (en) * | 2020-01-19 | 2020-05-19 | 江苏省沙钢钢铁研究院有限公司 | HRB600E vanadium-titanium microalloyed high-strength anti-seismic hot-rolled steel bar |
| CN112063911A (en) * | 2020-08-14 | 2020-12-11 | 陕西龙门钢铁有限责任公司 | Preparation method for producing HRB400E high-strength anti-seismic bar |
| CN114015939A (en) * | 2021-10-29 | 2022-02-08 | 山东钢铁股份有限公司 | Anti-seismic steel bar and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101693978A (en) * | 2009-10-14 | 2010-04-14 | 马鞍山钢铁股份有限公司 | Steel used for large-size hot-rolled ribbed rebar of 500MPa and smelting method thereof |
| 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 |
-
2012
- 2012-09-29 CN CN201210375262.7A patent/CN102851580B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101693978A (en) * | 2009-10-14 | 2010-04-14 | 马鞍山钢铁股份有限公司 | Steel used for large-size hot-rolled ribbed rebar of 500MPa and smelting method thereof |
| 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 |
Non-Patent Citations (1)
| Title |
|---|
| 李成军: "600MPa级钒氮微合金化热轧高性能钢筋的研制", 《天津冶金》 * |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103255349A (en) * | 2013-04-26 | 2013-08-21 | 江苏省沙钢钢铁研究院有限公司 | Small-size 600 MPa-level anti-seismic twisted steel and manufacturing method thereof |
| CN103255349B (en) * | 2013-04-26 | 2015-08-26 | 江苏省沙钢钢铁研究院有限公司 | Small-size 600 MPa-level anti-seismic twisted steel and manufacturing method thereof |
| CN104328361A (en) * | 2014-09-28 | 2015-02-04 | 四川德胜集团钒钛有限公司 | Anti-seismic steel bar and preparation method thereof |
| CN104372247A (en) * | 2014-11-04 | 2015-02-25 | 武钢集团昆明钢铁股份有限公司 | 600MPa high-strength antiseismic coil rod twisted steel bar and preparation method thereof |
| CN104745969A (en) * | 2015-04-03 | 2015-07-01 | 甘肃酒钢集团宏兴钢铁股份有限公司 | HRB400E high-strength corrosion-resistant steel bar and production process thereof |
| CN105734418A (en) * | 2016-03-11 | 2016-07-06 | 宣化钢铁集团有限责任公司 | Low-temperature-resistant hot-rolled angle steel and preparation method thereof |
| CN106148816A (en) * | 2016-08-31 | 2016-11-23 | 广西盛隆冶金有限公司 | High-tenacity high-strength steel plate and preparation method thereof |
| CN107557653A (en) * | 2017-09-14 | 2018-01-09 | 马鞍山市兴达冶金新材料有限公司 | Micro- nitrogen alloy and its technique for producing high strength cast iron |
| CN107675078A (en) * | 2017-09-26 | 2018-02-09 | 阳春新钢铁有限责任公司 | High-yield-strength vanadium-nitrogen-containing steel material and production method and application thereof |
| CN110218952A (en) * | 2019-07-17 | 2019-09-10 | 山东钢铁股份有限公司 | A kind of finish rolling deformed bar and its production method |
| CN110541108A (en) * | 2019-07-26 | 2019-12-06 | 马鞍山钢铁股份有限公司 | nb and V composite 700MPa grade high-strength anti-seismic steel bar steel and production method thereof |
| CN110541108B (en) * | 2019-07-26 | 2021-08-03 | 马鞍山钢铁股份有限公司 | Nb and V composite 700MPa grade high-strength anti-seismic steel bar steel and production method thereof |
| CN111172459A (en) * | 2020-01-19 | 2020-05-19 | 江苏省沙钢钢铁研究院有限公司 | HRB600E vanadium-titanium microalloyed high-strength anti-seismic hot-rolled steel bar |
| CN112063911A (en) * | 2020-08-14 | 2020-12-11 | 陕西龙门钢铁有限责任公司 | Preparation method for producing HRB400E high-strength anti-seismic bar |
| CN114015939A (en) * | 2021-10-29 | 2022-02-08 | 山东钢铁股份有限公司 | Anti-seismic steel bar and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102851580B (en) | 2014-04-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102851580B (en) | HRB600E aseismic reinforcement steel bar and production method thereof | |
| CN102703811B (en) | Titanium micro-alloyed 400MPa grade high-strength steel bar and production method thereof | |
| CN102703813B (en) | Vanadium and titanium compound microalloyed steel bar and production method thereof | |
| CN104018075B (en) | Rel >=600MPa hot rolled ribbed bars and the production method of yield tensile ratio≤0.8 | |
| CN103255349B (en) | Small-size 600 MPa-level anti-seismic twisted steel and manufacturing method thereof | |
| CN104593669B (en) | Steel for rebar and production method thereof | |
| CN102703812B (en) | Titanium microalloyed 500-MPa high-strength steel bar and production method thereof | |
| CN107557678B (en) | Low-cost weather-resistant steel for 550 MPa-grade hot-rolled container and manufacturing method thereof | |
| CN102851605A (en) | HRB600E reinforcement steel bar and production method thereof | |
| CN103898408B (en) | 700 MPa-level spiral steel bar and production method thereof | |
| CN106555123B (en) | Corrosion-resistant high-strength-to-yield-ratio anti-seismic reinforcing steel bar and production method thereof | |
| CN109972035B (en) | 800 MPa-level hot-rolled twisted steel and production method thereof | |
| CN102839318B (en) | HRB600 steel bar and production method thereof | |
| CN102002641A (en) | HRB500 anti-seismic reinforcing steel bar and production method | |
| CN102732787A (en) | 600 MPa-level anti-seismic twisted steel and manufacturing method thereof | |
| CN102899558A (en) | 500Mpa-grade building aseismic reinforcement | |
| CN111945074A (en) | 635 MPa-grade high-strength anti-seismic reinforcing steel bar and preparation method thereof | |
| CN102877007A (en) | Steel plate for low-crack sensitivity pressure container with thickness being more than or equal to 80mm and manufacture method of steel plate | |
| CN101906585A (en) | High-performance fire-resistant steel plate for building structure and manufacturing method thereof | |
| CN111172459A (en) | HRB600E vanadium-titanium microalloyed high-strength anti-seismic hot-rolled steel bar | |
| CN109576572A (en) | A kind of super-high strength steel muscle and its production method | |
| CN102978538B (en) | Smelting process for production of grade II hot-rolled reinforced bar | |
| CN102605246A (en) | Steel for low-strain-ageing sensitive welding structure and production method of steel | |
| CN101935806B (en) | Low-carbon bainitic cold-work-strengthened non-quenched and tempered steel with excellent delayed fracture resistance | |
| CN109295390A (en) | A kind of superelevation strong corrosion resistant reinforcing bar and its production method |
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 |