CN116790979A - HRB500E ribbed double high rod and production method thereof - Google Patents
HRB500E ribbed double high rod and production method thereof Download PDFInfo
- Publication number
- CN116790979A CN116790979A CN202310704663.0A CN202310704663A CN116790979A CN 116790979 A CN116790979 A CN 116790979A CN 202310704663 A CN202310704663 A CN 202310704663A CN 116790979 A CN116790979 A CN 116790979A
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- percent
- rolling
- hrb500e
- ribbed
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 238000005096 rolling process Methods 0.000 claims abstract description 51
- 238000010438 heat treatment Methods 0.000 claims abstract description 21
- 238000009749 continuous casting Methods 0.000 claims abstract description 16
- 238000003723 Smelting Methods 0.000 claims abstract description 15
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 11
- 239000010959 steel Substances 0.000 claims abstract description 11
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 11
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 10
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 8
- 239000010955 niobium Substances 0.000 claims abstract description 8
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims abstract description 8
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 7
- 238000007670 refining Methods 0.000 claims abstract description 7
- 239000012535 impurity Substances 0.000 claims abstract description 6
- 239000000126 substance Substances 0.000 claims abstract description 5
- 238000001816 cooling Methods 0.000 claims description 8
- 230000009977 dual effect Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims 1
- 230000003647 oxidation Effects 0.000 abstract description 4
- 238000007254 oxidation reaction Methods 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 239000000956 alloy Substances 0.000 description 6
- 229910045601 alloy Inorganic materials 0.000 description 6
- 239000011572 manganese Substances 0.000 description 5
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
-
- 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
- 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
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
-
- 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
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
-
- 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
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
Abstract
The invention relates to an HRB500E ribbed double high rod and a production method thereof, belonging to the technical field of metallurgical steel rolling, wherein the double high rod comprises the following substances in percentage by mass: c:0.22 to 0.25 percent, si:0.10 to 0.30 percent of Mn:1.20 to 1.60 percent, S is less than or equal to 0.045 percent, P is less than or equal to 0.045 percent, V:0.040% -0.055%, nb:0.010 to 0.030 percent, N:0.0100% -0.0150% and the balance of Fe and impurities. The production method comprises the following steps: BOF smelting, ar station fine tuning, LF refining, continuous casting and rolling, wherein vanadium, nitrogen and niobium are added in the BOF smelting, and heating in a heating furnace is canceled in the rolling. The invention realizes direct rolling by adding proper vanadium, niobium and nitrogen without heating by a heating furnace, thereby not only reducing energy consumption, but also avoiding heating oxidation burning loss and improving the yield.
Description
Technical Field
The invention belongs to the technical field of metallurgical steel rolling, and relates to an HRB500E ribbed double high rod and a production method thereof.
Background
The existing bar production line mainly adopts a heating furnace to produce HRB500E and adopts alloy elements to produce, and the production process flow is as follows: blast furnace molten iron smelting, molten iron desulfurization pretreatment, converter molten steel smelting, LF refining, square billet continuous casting and hot continuous rolling. The high silicon and the high manganese are required to be added in smelting, the alloy elements such as vanadium and niobium are high in alloy cost, a heating furnace is required to heat during hot continuous rolling, and the problems of high cost and low yield are caused due to the fact that the heating oxidation burning loss exists.
Disclosure of Invention
Accordingly, the present invention is directed to a ribbed dual high rod of HRB500E and a method for producing the same, which can reduce the cost and increase the yield.
In order to achieve the above purpose, the present invention provides the following technical solutions:
an HRB500E ribbed double high rod comprises the following substances in percentage by mass: c:0.22 to 0.25 percent, si:0.10 to 0.30 percent of Mn:1.20 to 1.60 percent, S is less than or equal to 0.045 percent, P is less than or equal to 0.045 percent, V:0.040% -0.055%, nb:0.010 to 0.030 percent, N:0.0100% -0.0150% and the balance of Fe and impurities.
Alternatively, C:0.23%, si:0.20%, mn:1.42%, S:0.027%, P:0.032%, V:0.046%, nb:0.021%, N:0.0124%.
The production method for the HRB500E ribbed double high rod comprises the following steps: BOF smelting, ar station fine tuning, LF refining, continuous casting and rolling, wherein vanadium, nitrogen and niobium are added in the BOF smelting, and heating in a heating furnace is canceled in the rolling.
Optionally, the rolling comprises rough rolling, intermediate rolling, pre-finish rolling, cooling and finishing, wherein the initial rolling temperature of the rough rolling is more than or equal to 950 ℃, the intermediate rolling temperature is 950+/-20 ℃, the pre-finish rolling temperature is 950+/-20 ℃, the finish rolling temperature is 920+/-20 ℃, and the cooling temperature is 900+/-20 ℃.
Optionally, the continuous casting drawing speed is 2.5 m/min-2.9 m/min.
Optionally, the continuous casting steel feeding temperature is more than or equal to 970 ℃.
Alternatively, the continuous casting billet has a gauge of 170mm×170mm×12m.
Alternatively, the specification of the HRB500E ribbed dual tall rod is Φ12mm.
The invention has the beneficial effects that: by adding proper vanadium, niobium and nitrogen, the direct rolling of the small-specification HRB500E ribbed double high rod is realized, the heating of a heating furnace is not needed, the energy consumption is reduced, the heating oxidation burning loss is avoided, and the yield is improved.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objects and other advantages of the invention may be realized and obtained by means of the instrumentalities and combinations particularly pointed out in the specification.
Detailed Description
Other advantages and effects of the present invention will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present invention with reference to specific examples. The invention may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present invention.
An HRB500E ribbed double high rod comprises the following substances in percentage by mass: c:0.22 to 0.25 percent, si:0.10 to 0.30 percent of Mn:1.20 to 1.60 percent, S is less than or equal to 0.045 percent, P is less than or equal to 0.045 percent, V:0.040% -0.055%, nb:0.010 to 0.030 percent, N:0.0100% -0.0150% and the balance of Fe and impurities.
The production method for the HRB500E ribbed double high rod comprises the following steps: batching, BOF smelting, ar station fine tuning, LF refining, continuous casting, rolling, adding vanadium, nitrogen and niobium into the BOF smelting, and heating by a heating furnace is canceled during rolling. The method comprises the following steps:
(1) And (3) batching: the HRB500E deformed steel bar is prepared from the following components in percentage by mass: c:0.22 to 0.25 percent, si:0.10 to 0.30 percent of Mn:1.20 to 1.60 percent, S is less than or equal to 0.045 percent, P is less than or equal to 0.045 percent, V:0.040% -0.055%, nb:0.010 to 0.030 percent, N:0.0100% -0.0150% and the balance of Fe and impurities.
(2) Smelting: the method comprises the steps of adopting a BOF smelting, ar station fine tuning, LF refining and continuous casting process path, calculating required alloy according to the component requirements of ingredients, smelting in a converter, and adding the alloy in an LF refining procedure after smelting so as to fine tune manganese and silicon.
(3) Continuous casting: pouring molten steel into square billets, wherein the square billets have the following specifications: 170mm by 12m. The continuous casting drawing speed is 2.5 m/min-2.9 m/min, and the steel feeding temperature is more than or equal to 970 ℃.
(4) Rolling: conveying the steel mill to roll, wherein the steel mill is heated by a heating furnace, the rolling comprises rough rolling, intermediate rolling, pre-finish rolling, cooling, finishing, bundling and the like, the initial rolling temperature of the rough rolling is more than or equal to 950 ℃, the intermediate rolling temperature is 950+/-20 ℃, the pre-finish rolling temperature is 950+/-20 ℃, the finish rolling temperature is 920+/-20 ℃, and the upper cooling bed temperature is 900+/-20 ℃.
The invention adopts the vanadium, niobium and nitrogen composite alloy production, and the strength-to-deflection ratio of the produced small-specification HRB500E product is more than or equal to 1.29 percent and is higher than the national standard requirement by controlling the continuous casting drawing speed, the initial rolling temperature, the pre-finish rolling, the finish rolling and the upper cooling bed temperature, thereby improving the strength-to-deflection ratio of the double high rod HRB500E hot rolled ribbed steel bar. The invention optimizes the rolling process without heating by a heating furnace, adopts the direct rolling process, reduces the energy consumption, avoids the heating oxidation burning loss and improves the yield.
Example 1
An HRB500E ribbed double high rod comprises the following substances in percentage by mass: c:0.23%, si:0.20%, mn:1.42%, S:0.027%, P:0.032%, V:0.046%, nb:0.021%, N:0.0124%, and the balance of Fe and impurities.
The nominal diameter of the rolled double high rod is phi 12mm, HRB500E, the continuous casting drawing speed is 2.78m/min, the initial rolling temperature is 986 ℃, the intermediate rolling temperature is 953 ℃, the pre-finish rolling temperature is controlled to be 948 ℃, the finish rolling temperature is 918 ℃, the product is placed on a cooling bed 910 ℃, the yield strength is 560/550Mpa, the tensile strength is 725/710Mpa, the strength-to-yield ratio is 1.30/1.30, agt:11.2%/12.6%, larger performance margin, and qualified forward bending and backward bending.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the present invention, which is intended to be covered by the claims of the present invention.
Claims (8)
1. An HRB500E ribbed dual tall rod characterized by: the material comprises the following substances in percentage by mass: c:0.22 to 0.25 percent, si:0.10 to 0.30 percent of Mn:1.20 to 1.60 percent, S is less than or equal to 0.045 percent, P is less than or equal to 0.045 percent, V:0.040% -0.055%, nb:0.010 to 0.030 percent, N:0.0100% -0.0150% and the balance of Fe and impurities.
2. The HRB500E ribbed dual tall rod of claim 1 wherein: c:0.23%, si:0.20%, mn:1.42%, S:0.027%, P:0.032%, V:0.046%, nb:0.021%, N:0.0124%.
3. A method for producing the HRB500E ribbed twin tall rod of any one of claims 1-2, characterized by: the method comprises the following steps: BOF smelting, ar station fine tuning, LF refining, continuous casting and rolling, wherein vanadium, nitrogen and niobium are added in the BOF smelting, and heating in a heating furnace is canceled in the rolling.
4. A method for producing a HRB500E ribbed twin high bar according to claim 3, wherein: the rolling comprises rough rolling, intermediate rolling, pre-finish rolling, cooling and finishing, wherein the initial rolling temperature of the rough rolling is more than or equal to 950 ℃, the intermediate rolling temperature is 950+/-20 ℃, the pre-finish rolling temperature is 950+/-20 ℃, the finish rolling temperature is 920+/-20 ℃, and the cooling temperature is 900+/-20 ℃.
5. A method for producing a HRB500E ribbed twin high bar according to claim 3, wherein: the continuous casting drawing speed is 2.5 m/min-2.9 m/min.
6. A method for producing a HRB500E ribbed twin high bar according to claim 3, wherein: the continuous casting steel feeding temperature is more than or equal to 970 ℃.
7. A method for producing a HRB500E ribbed twin high bar according to claim 3, wherein: the specification of the continuous casting billet is 170mm multiplied by 12m.
8. A method for producing a HRB500E ribbed twin high bar according to claim 3, wherein: the specification of the HRB500E ribbed dual high bar is phi 12mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310704663.0A CN116790979A (en) | 2023-06-14 | 2023-06-14 | HRB500E ribbed double high rod and production method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310704663.0A CN116790979A (en) | 2023-06-14 | 2023-06-14 | HRB500E ribbed double high rod and production method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116790979A true CN116790979A (en) | 2023-09-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310704663.0A Pending CN116790979A (en) | 2023-06-14 | 2023-06-14 | HRB500E ribbed double high rod and production method thereof |
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| CN (1) | CN116790979A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101775538A (en) * | 2010-03-24 | 2010-07-14 | 中南大学 | Technique for producing 500MPa level high-strength quake-proof reinforcing steel bar |
| CN106987768A (en) * | 2017-03-29 | 2017-07-28 | 海城市欣锐铸件有限公司 | A kind of manufacture method of Low-cost corrosion-resistant spiral |
| CN206652838U (en) * | 2016-12-01 | 2017-11-21 | 上海亚新连铸技术工程有限公司 | A kind of wire rolling process units of low energy consumption |
| CN107955919A (en) * | 2017-11-30 | 2018-04-24 | 攀钢集团攀枝花钢铁研究院有限公司 | Steel bar and its LF stove production methods are built containing V, Nb microalloy |
| CN109252106A (en) * | 2018-11-23 | 2019-01-22 | 攀钢集团攀枝花钢铁研究院有限公司 | 500MPa grades contain V, Nb microalloy high yield ratio anti-seismic steel bar bar and its production method |
| CN109355560A (en) * | 2018-11-07 | 2019-02-19 | 钢铁研究总院 | The complex intensifying cooling technique of hot-rolled microalloy reinforcing bar HRB500E |
| CN113862552A (en) * | 2021-09-10 | 2021-12-31 | 首钢长治钢铁有限公司 | Steel wire rod for welding and preparation method thereof |
| CN114799095A (en) * | 2022-04-28 | 2022-07-29 | 广西柳州钢铁集团有限公司 | Heating-free direct rolling method for steel bars and steel bars rolled by heating-free direct rolling method |
| CN116200665A (en) * | 2023-02-24 | 2023-06-02 | 首钢集团有限公司 | HRB500E anti-seismic reinforcing steel bar and preparation method thereof |
-
2023
- 2023-06-14 CN CN202310704663.0A patent/CN116790979A/en active Pending
Patent Citations (9)
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|---|---|---|---|---|
| CN101775538A (en) * | 2010-03-24 | 2010-07-14 | 中南大学 | Technique for producing 500MPa level high-strength quake-proof reinforcing steel bar |
| CN206652838U (en) * | 2016-12-01 | 2017-11-21 | 上海亚新连铸技术工程有限公司 | A kind of wire rolling process units of low energy consumption |
| CN106987768A (en) * | 2017-03-29 | 2017-07-28 | 海城市欣锐铸件有限公司 | A kind of manufacture method of Low-cost corrosion-resistant spiral |
| CN107955919A (en) * | 2017-11-30 | 2018-04-24 | 攀钢集团攀枝花钢铁研究院有限公司 | Steel bar and its LF stove production methods are built containing V, Nb microalloy |
| CN109355560A (en) * | 2018-11-07 | 2019-02-19 | 钢铁研究总院 | The complex intensifying cooling technique of hot-rolled microalloy reinforcing bar HRB500E |
| CN109252106A (en) * | 2018-11-23 | 2019-01-22 | 攀钢集团攀枝花钢铁研究院有限公司 | 500MPa grades contain V, Nb microalloy high yield ratio anti-seismic steel bar bar and its production method |
| CN113862552A (en) * | 2021-09-10 | 2021-12-31 | 首钢长治钢铁有限公司 | Steel wire rod for welding and preparation method thereof |
| CN114799095A (en) * | 2022-04-28 | 2022-07-29 | 广西柳州钢铁集团有限公司 | Heating-free direct rolling method for steel bars and steel bars rolled by heating-free direct rolling method |
| CN116200665A (en) * | 2023-02-24 | 2023-06-02 | 首钢集团有限公司 | HRB500E anti-seismic reinforcing steel bar and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
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