CN113695386A - HRB400E high-speed wire threaded steel with same-ring strength fluctuation difference not greater than 20Mpa and production method thereof - Google Patents
HRB400E high-speed wire threaded steel with same-ring strength fluctuation difference not greater than 20Mpa and production method thereof Download PDFInfo
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- CN113695386A CN113695386A CN202110763388.0A CN202110763388A CN113695386A CN 113695386 A CN113695386 A CN 113695386A CN 202110763388 A CN202110763388 A CN 202110763388A CN 113695386 A CN113695386 A CN 113695386A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/16—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/46—Roll speed or drive motor control
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B39/02—Feeding or supporting work; Braking or tensioning arrangements, e.g. threading arrangements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0203—Cooling
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- 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
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C—CHEMISTRY; METALLURGY
- 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
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The invention provides HRB400E high-speed wire threaded steel with the same ring strength fluctuation difference not greater than 20Mpa and a production method thereof, wherein the production method of the HRB400E high-speed wire threaded steel with the same ring strength fluctuation difference not greater than 20Mpa comprises the following steps: sequentially carrying out blast furnace molten iron smelting, molten iron desulphurization pretreatment, converter molten steel smelting, square billet continuous casting, high-speed wire rod rolling, spinning, inspection, packaging and warehousing; controlling the end point C of the converter to be less than or equal to 0.15 Wt% and the P to be less than or equal to 0.037 Wt%; controlling the single flow pulling speed of the casting blank to be 2.5-4.5 m/min; the high-speed wire deformed steel comprises the following chemical components in percentage by weight: c: 0.21-0.25 Wt%, Si: 0.55-0.70 Wt%, Mn: 0.95-1.1 Wt%, P: less than or equal to 0.040 Wt%, S: less than or equal to 0.040 Wt%, N: less than or equal to 0.0070 Wt%, Cr: less than or equal to 0.11 Wt%, B: less than or equal to 0.0011Wt percent. The method can control the yield fluctuation of the same-ring strength of the HRB400E coiled steel bar with the specification of phi 6-12 mm within 20MPa, and simultaneously reduces the production cost.
Description
Technical Field
The invention relates to the technical field of metallurgy, in particular to HRB400E high-speed wire threaded steel with the same ring strength fluctuation difference not greater than 20Mpa and a production method thereof.
Background
Currently, HRB400E wire rod rebar is produced by a high-speed wire production line, transported on a stelmor roller and cooled after spinning. However, after spinning, the wire rods on the stelmor roller way have lap joints and non-lap joints, so that uneven cooling is frequently caused, and the larger the cooling strength of the stelmor roller way is, the more obvious the uneven cooling is, so that the wire rod strength fluctuation is too large.
In summary, the following problems exist in the prior art: the uneven cooling of the HRB400E coil bar twisted steel production process causes the coil bar strength to fluctuate too much.
Disclosure of Invention
The technical problem solved by the embodiment of the invention is how to solve the problem of overlarge coil strength fluctuation caused by uneven cooling in the production process of the HRB400E coil bar threaded steel bar.
To this end, in one aspect, the embodiments of the present invention provide a method for producing an HRB400E high-speed wire threaded steel with a same-ring strength fluctuation difference of not greater than 20Mpa, the method for producing an HRB400E high-speed wire threaded steel with a same-ring strength fluctuation difference of not greater than 20Mpa includes:
sequentially carrying out blast furnace molten iron smelting, molten iron desulphurization pretreatment, converter molten steel smelting, square billet continuous casting, high-speed wire rod rolling, spinning, inspection, packaging and warehousing;
controlling the end point C of the converter to be less than or equal to 0.15 Wt% and the P to be less than or equal to 0.037 Wt%;
controlling the single flow pulling speed of the casting blank to be 2.5-4.5 m/min;
the high-speed wire threaded steel comprises the following chemical components in percentage by weight: c: 0.21-0.25 Wt%, Si: 0.55-0.70 Wt%, Mn: 0.95-1.1 Wt%, P: less than or equal to 0.040 Wt%, S: less than or equal to 0.040 Wt%, N: less than or equal to 0.0070 Wt%, Cr: less than or equal to 0.11 Wt%, B: less than or equal to 0.0011Wt percent.
Specifically, the molten iron S in the converter during the smelting of the molten steel is kept to be less than or equal to 0.040 Wt%, and the whole process of bottom blowing argon is adopted in the smelting process.
Specifically, ladle slag tapping detection control is adopted during square billet continuous casting, and the pouring temperature of a tundish is 1525-1545 ℃.
Specifically, when rolling a high-speed wire rod, controlling the heating temperature of a casting blank to be 1050-1170 ℃, the heating time of a billet to be 80-120 minutes, and the starting rolling temperature to be 950-1010 ℃, and cooling the billet in a stelmor mode after rolling the high-speed wire rod, wherein the stelmor mode is a sectional type step roller way.
Specifically, the spinning temperature is controlled to be 810-890 ℃.
On the other hand, the embodiment of the invention also provides HRB400E high-speed wire threaded steel with the same ring strength fluctuation difference not greater than 20Mpa, and a production method of HRB400E high-speed wire threaded steel with the same ring strength fluctuation difference not greater than 20Mpa is adopted, wherein the high-speed wire threaded steel comprises the following chemical components in percentage by weight: c: 0.21-0.25 Wt%, Si: 0.55-0.70 Wt%, Mn: 0.95-1.1 Wt%, P: less than or equal to 0.040 Wt%, S: less than or equal to 0.040 Wt%, N: less than or equal to 0.0070 Wt%, Cr: less than or equal to 0.11 Wt%, B: less than or equal to 0.0011Wt percent.
Specifically, the high-speed wire threaded steel comprises the following chemical components in percentage by weight: c: 0.24 Wt%, Si: 0.65 Wt%, Mn: 0.98 Wt%, P: 0.027 Wt%, S: 0.023 Wt%, B: 0.001 Wt%, N: 0.0045 Wt%, Cr: 0.09 Wt%.
Specifically, the high-speed wire threaded steel comprises the following chemical components in percentage by weight: c: 0.23 Wt%, Si: 0.63 Wt%, Mn: 0.99 Wt%, P: 0.031 Wt%, S: 0.025 Wt%, B: 0.0006 Wt%, N: 0.0052 Wt%, Cr: 0.08 Wt%.
Specifically, the high-speed wire threaded steel comprises the following chemical components in percentage by weight: c: 0.21 Wt%, Si: 0.68 Wt%, Mn: 1.05 Wt%, P: 0.025 Wt%, S: 0.026 Wt%, B: 0.0003 Wt%, N: 0.0049 Wt%, Cr: 0.07 Wt%.
Specifically, the high-speed wire threaded steel comprises the following chemical components in percentage by weight: c: 0.25 Wt%, Si: 0.62 Wt%, Mn: 1.02 Wt%, P: 0.026 Wt%, S: 0.029 Wt%, B: 0.0004 Wt%, N: 0.0042 Wt%, Cr: 0.10 Wt%.
The production method of HRB400E high-speed wire threaded steel with the same-circle strength fluctuation difference not greater than 20Mpa ensures a certain rolling speed during rolling, and is stable and high in deformation rate and beneficial to grain refinement. Stelmor sets up sectional type ladder roll table, makes the rolled piece move in the middle of, prevents the off tracking, influences follow-up album and rolls up, falls the in-process, and the coil that the winding overlaps can separate, makes the coil cooling more even. The method can control the yield fluctuation of the same-ring strength of the HRB400E coiled steel bar with the specification of phi 6-12 mm within 20MPa, and simultaneously reduces the production cost.
Detailed Description
The present invention will now be described in order to more clearly understand the technical features, objects, and effects of the present invention.
The invention provides a production method of HRB400E high-speed wire threaded steel with the same ring strength fluctuation difference not greater than 20Mpa, which comprises the following steps:
sequentially carrying out blast furnace molten iron smelting, molten iron desulphurization pretreatment, converter molten steel smelting, square billet continuous casting, high-speed wire rod rolling, spinning, inspection, packaging and warehousing;
controlling the end point C of the converter to be less than or equal to 0.15 Wt% and the P to be less than or equal to 0.037 Wt%;
controlling the single flow pulling speed of the casting blank to be 2.5-4.5 m/min;
the high-speed wire threaded steel comprises the following chemical components in percentage by weight: c: 0.21-0.25 Wt%, Si: 0.55-0.70 Wt%, Mn: 0.95-1.1 Wt%, P: less than or equal to 0.040 Wt%, S: less than or equal to 0.040 Wt%, N: less than or equal to 0.0070 Wt%, Cr: less than or equal to 0.11 Wt%, B: less than or equal to 0.0011Wt percent.
The process route is as follows: smelting blast furnace molten iron, desulfurizing and pre-treating the molten iron, smelting converter molten steel, continuously casting square billets, rolling at a high speed, spinning, inspecting, packaging and warehousing; wherein, the process characteristics of each stage are as follows:
smelting molten steel in a converter: s is required to be less than or equal to 0.040 Wt% when the molten iron enters the furnace; argon is blown from the bottom in the whole process of smelting, the gas flow is increased in the later stage of blowing, and the stirring of a molten pool is enhanced; controlling the end point of the converter to be less than or equal to 0.15 Wt% C and less than or equal to 0.037 Wt% P;
and (3) square billet continuous casting, wherein ladle deslagging detection control is adopted, the pouring temperature of a tundish is 1525-1545 ℃, the tundish uses a common covering agent and common square billet covering slag, and the single flow pulling speed of a casting blank is 2.5-4.5 m/min.
Rolling the high-speed wire rods: the heating temperature of a casting blank is controlled to be 1050-1170 ℃, the heating time of a steel billet is controlled to be 80-120 minutes, and the initial rolling temperature is controlled to be 950-1010 ℃.
The specific technical measures of the invention comprise:
1. reasonable components:
(1) and controlling elements such as Mn, Cr, B, N and the like which influence the hardenability of the steel. When the contents of Mn, Cr, B and N are higher, the hardenability of steel can be improved, uneven cooling is caused, the stability of the same-circle structure of the steel bars is influenced, and the performance stability is further influenced, so that the steel bars are controlled at a lower level. The strength lost by the elements is compensated by C, Si elements and controlled rolling and cooling.
(2) C, Si, the solid solution strengthening effect is provided, the strength is more stable, and the strength is controlled at a higher level.
According to the influence of the components in the steel on uneven cooling of the wire rod, the Mn content in the steel is properly reduced, Cr brought by scrap steel is controlled, N and B in the steel are controlled, and the Si content is increased, as shown in Table 1.
TABLE 1 vanadium microalloying HRB400E composition (wt%)
2. Designing a rolling mill: 6 roughing mills, 6 middle mills, 6 pre-finishing mills, a cooling control device, a recovery section, 8 finishing mills, a cooling control device, a recovery section, 2 diameter shearing units and a cooling control device.
3. The rolling process comprises the following steps: a cold control device is used in front of a finishing mill group and a diameter shearing unit, and the lower finish rolling temperature and diameter shearing temperature are controlled to realize controlled rolling of an austenite recrystallization zone; a cold control device was used after the diameter cutting unit to control the lower spinning temperature (table 2).
TABLE 2 Rolling Key temperature
4. Rolling speed: ensures a certain rolling speed, is stable and has higher deformation rate, thus being beneficial to grain refinement. (Table 2)
5. Stelmor roller bed: stelmor sets up sectional type ladder roll table, makes the rolled piece move in the middle of, prevents the off tracking, influences follow-up album and rolls up, falls the in-process, and the coil that the winding overlaps can separate, makes the coil cooling more even, and the heat preservation cover is whole to be opened. The speed of the first section roller way of stelmor is not less than 40 m/min.
6. And (4) checking: before packaging, the length of the non-cold section of the head and the tail of the wire rod is required to be seen, and 8-15 circles of the head and the tail of the wire rod are cut off. And during mechanical inspection, the part after the non-cold section is cut off.
The invention also provides HRB400E high-speed wire threaded steel with the same ring strength fluctuation difference not more than 20Mpa, and a production method of the HRB400E high-speed wire threaded steel with the same ring strength fluctuation difference not more than 20Mpa is adopted, and the high-speed wire threaded steel comprises the following chemical components in percentage by weight: c: 0.21-0.25 Wt%, Si: 0.55-0.70 Wt%, Mn: 0.95-1.1 Wt%, P: less than or equal to 0.040 Wt%, S: less than or equal to 0.040 Wt%, N: less than or equal to 0.0070 Wt%, Cr: less than or equal to 0.11 Wt%, B: less than or equal to 0.0011Wt percent.
The high-speed wire threaded steel comprises the following chemical components in percentage by weight: c: 0.24 Wt%, Si: 0.65 Wt%, Mn: 0.98 Wt%, P: 0.027 Wt%, S: 0.023 Wt%, B: 0.001 Wt%, N: 0.0045 Wt%, Cr: 0.09 Wt%.
The high-speed wire threaded steel comprises the following chemical components in percentage by weight: c: 0.23 Wt%, Si: 0.63 Wt%, Mn: 0.99 Wt%, P: 0.031 Wt%, S: 0.025 Wt%, B: 0.0006 Wt%, N: 0.0052 Wt%, Cr: 0.08 Wt%.
The high-speed wire threaded steel comprises the following chemical components in percentage by weight: c: 0.21 Wt%, Si: 0.68 Wt%, Mn: 1.05 Wt%, P: 0.025 Wt%, S: 0.026 Wt%, B: 0.0003 Wt%, N: 0.0049 Wt%, Cr: 0.07 Wt%.
The high-speed wire threaded steel comprises the following chemical components in percentage by weight: c: 0.25 Wt%, Si: 0.62 Wt%, Mn: 1.02 Wt%, P: 0.026 Wt%, S: 0.029 Wt%, B: 0.0004 Wt%, N: 0.0042 Wt%, Cr: 0.10 Wt%.
The production method of HRB400E high-speed wire threaded steel with the same-circle strength fluctuation difference not greater than 20Mpa ensures a certain rolling speed during rolling, and is stable and high in deformation rate and beneficial to grain refinement. Stelmor sets up sectional type ladder roll table, makes the rolled piece move in the middle of, prevents the off tracking, influences follow-up album and rolls up, falls the in-process, and the coil that the winding overlaps can separate, makes the coil cooling more even. The method can control the yield fluctuation of the same-ring strength of the HRB400E coiled steel bar with the specification of phi 6-12 mm within 20MPa, and simultaneously reduces the production cost.
Example (b):
the invention adopts the following component proportion and specific process for controlling the same-ring strength fluctuation of HRB400E coil bar threaded steel bars with the specification of phi 6-12 mm. Wherein, table 3 is the composition (in weight percent) of the steels of the respective examples. Table 4 shows the production specifications, process parameters, and mechanical properties corresponding to the example steels described in table 3. Designing a produced rolling mill: 6 roughing mills, 6 middle mills, 6 pre-finishing mills, a cooling control device, a recovery section, 8 finishing mills, a cooling control device, a recovery section, 2 diameter shearing units and a cooling control device. The stelmor first stage roller speed was 40 m/min. The mechanical properties were tested after cutting off the head and tail of the coil rod for 10 circles each.
Table 3: chemical composition (wt%) of product
| Examples of the invention | C | Si | Mn | P | S | B | N | Cr |
| Example 1 | 0.24 | 0.65 | 0.98 | 0.027 | 0.023 | 0.0010 | 0.0045 | 0.09 |
| Example 2 | 0.23 | 0.63 | 0.99 | 0.031 | 0.025 | 0.0006 | 0.0052 | 0.08 |
| Example 3 | 0.21 | 0.68 | 1.05 | 0.025 | 0.026 | 0.0003 | 0.0049 | 0.07 |
| Example 4 | 0.25 | 0.62 | 1.02 | 0.026 | 0.029 | 0.0004 | 0.0042 | 0.10 |
Table 4: specific process parameters and mechanical properties of the examples
The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention. In order that the components of the present invention may be combined without conflict, it is within the scope of the present invention that any person skilled in the art may make equivalent changes and modifications without departing from the spirit and principle of the present invention.
Claims (10)
1. A production method of HRB400E high-speed wire threaded steel with the same-ring strength fluctuation difference not greater than 20Mpa is characterized by comprising the following steps:
sequentially carrying out blast furnace molten iron smelting, molten iron desulphurization pretreatment, converter molten steel smelting, square billet continuous casting, high-speed wire rod rolling, spinning, inspection, packaging and warehousing;
controlling the end point C of the converter to be less than or equal to 0.15 Wt% and the P to be less than or equal to 0.037 Wt%;
controlling the single flow pulling speed of the casting blank to be 2.5-4.5 m/min;
the high-speed wire threaded steel comprises the following chemical components in percentage by weight: c: 0.21-0.25 Wt%, Si: 0.55-0.70 Wt%, Mn: 0.95-1.1 Wt%, P: less than or equal to 0.040 Wt%, S: less than or equal to 0.040 Wt%, N: less than or equal to 0.0070 Wt%, Cr: less than or equal to 0.11 Wt%, B: less than or equal to 0.0011Wt percent.
2. The method for producing the HRB400E high-speed wire deformed steel bar with the same ring strength fluctuation difference not more than 20Mpa as claimed in claim 1, wherein the molten iron S in the converter during the smelting of the molten steel is kept to be less than or equal to 0.040 Wt%, and argon is blown from the bottom in the whole smelting process.
3. The production method of the HRB400E high-speed wire threaded steel with the same ring strength fluctuation difference not more than 20Mpa according to claim 1, wherein ladle slag tapping detection control is adopted during billet continuous casting, and the pouring temperature of a tundish is 1525-1545 ℃.
4. The production method of the HRB400E high-speed wire threaded steel with the same-circle strength fluctuation difference not more than 20Mpa as claimed in claim 1, wherein during high-speed wire rolling, the heating temperature of a casting blank is controlled to be 1050-1170 ℃, the heating time of a steel billet is controlled to be 80-120 minutes, the initial rolling temperature is controlled to be 950-1010 ℃, and the steel billet is cooled by stelmor after the high-speed wire rolling, wherein the stelmor is set as a sectional type step roller way.
5. The method for producing the HRB400E high-speed wire threaded steel with the same-circle strength fluctuation difference not more than 20Mpa according to claim 1, wherein the spinning temperature is controlled to be 810-890 ℃.
6. The production method of the HRB400E high-speed wire threaded steel with the same-ring strength fluctuation difference not more than 20Mpa is characterized by adopting the production method of the HRB400E high-speed wire threaded steel with the same-ring strength fluctuation difference not more than 20Mpa, which is disclosed by the claim 1, and the high-speed wire threaded steel comprises the following chemical components in percentage by weight: c: 0.21-0.25 Wt%, Si: 0.55-0.70 Wt%, Mn: 0.95-1.1 Wt%, P: less than or equal to 0.040 Wt%, S: less than or equal to 0.040 Wt%, N: less than or equal to 0.0070 Wt%, Cr: less than or equal to 0.11 Wt%, B: less than or equal to 0.0011Wt percent.
7. The HRB400E high-speed wire threaded steel with the same ring strength fluctuation difference not more than 20Mpa as claimed in claim 6, wherein the chemical composition of the high-speed wire threaded steel is as follows by weight percent: c: 0.24 Wt%, Si: 0.65 Wt%, Mn: 0.98 Wt%, P: 0.027 Wt%, S: 0.023 Wt%, B: 0.001 Wt%, N: 0.0045 Wt%, Cr: 0.09 Wt%.
8. The HRB400E high-speed wire threaded steel with the same ring strength fluctuation difference not more than 20Mpa as claimed in claim 6, wherein the chemical composition of the high-speed wire threaded steel is as follows by weight percent: c: 0.23 Wt%, Si: 0.63 Wt%, Mn: 0.99 Wt%, P: 0.031 Wt%, S: 0.025 Wt%, B: 0.0006 Wt%, N: 0.0052 Wt%, Cr: 0.08 Wt%.
9. The HRB400E high-speed wire threaded steel with the same ring strength fluctuation difference not more than 20Mpa as claimed in claim 6, wherein the chemical composition of the high-speed wire threaded steel is as follows by weight percent: c: 0.21 Wt%, Si: 0.68 Wt%, Mn: 1.05 Wt%, P: 0.025 Wt%, S: 0.026 Wt%, B: 0.0003 Wt%, N: 0.0049 Wt%, Cr: 0.07 Wt%.
10. The HRB400E high-speed wire threaded steel with the same ring strength fluctuation difference not more than 20Mpa as claimed in claim 6, wherein the chemical composition of the high-speed wire threaded steel is as follows by weight percent: c: 0.25 Wt%, Si: 0.62 Wt%, Mn: 1.02 Wt%, P: 0.026 Wt%, S: 0.029 Wt%, B: 0.0004 Wt%, N: 0.0042 Wt%, Cr: 0.10 Wt%.
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| CN114836608A (en) * | 2022-04-26 | 2022-08-02 | 包头钢铁（集团）有限责任公司 | Production method for reducing performance same-circle difference of HRB400E disc spiral steel bar |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102409228A (en) * | 2010-09-20 | 2012-04-11 | 鞍钢股份有限公司 | High-strength high-carbon steel wire rod and production method thereof |
| CN104056862A (en) * | 2014-07-07 | 2014-09-24 | 首钢总公司 | Control method for reducing specified non-proportional extension strength fluctuation |
| CN111455281A (en) * | 2020-04-17 | 2020-07-28 | 柳州钢铁股份有限公司 | Method for controlling yield strength fluctuation of same ring of HRB400E wire rod twisted steel and HRB400E wire rod twisted steel |
| CN111893279A (en) * | 2020-08-12 | 2020-11-06 | 宝武集团鄂城钢铁有限公司 | Stelmor air-cooled wire-controlled cold production method of HRB400(E) deformed steel bar with yield strength of more than or equal to 420MPa |
| CN111974798A (en) * | 2020-07-24 | 2020-11-24 | 柳州钢铁股份有限公司 | Method for increasing thickness of iron scale on surface of wire rod |
| CN112496062A (en) * | 2020-10-20 | 2021-03-16 | 江苏省沙钢钢铁研究院有限公司 | Method for improving performance uniformity of high-carbon steel wire rod in same circle |
| CN113042525A (en) * | 2021-02-24 | 2021-06-29 | 广西柳钢华创科技研发有限公司 | Method for increasing thickness of scale on surface of high-speed bar and production method of HRB400E straight-bar threaded steel bar |
-
2021
- 2021-07-06 CN CN202110763388.0A patent/CN113695386B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102409228A (en) * | 2010-09-20 | 2012-04-11 | 鞍钢股份有限公司 | High-strength high-carbon steel wire rod and production method thereof |
| CN104056862A (en) * | 2014-07-07 | 2014-09-24 | 首钢总公司 | Control method for reducing specified non-proportional extension strength fluctuation |
| CN111455281A (en) * | 2020-04-17 | 2020-07-28 | 柳州钢铁股份有限公司 | Method for controlling yield strength fluctuation of same ring of HRB400E wire rod twisted steel and HRB400E wire rod twisted steel |
| CN111974798A (en) * | 2020-07-24 | 2020-11-24 | 柳州钢铁股份有限公司 | Method for increasing thickness of iron scale on surface of wire rod |
| CN111893279A (en) * | 2020-08-12 | 2020-11-06 | 宝武集团鄂城钢铁有限公司 | Stelmor air-cooled wire-controlled cold production method of HRB400(E) deformed steel bar with yield strength of more than or equal to 420MPa |
| CN112496062A (en) * | 2020-10-20 | 2021-03-16 | 江苏省沙钢钢铁研究院有限公司 | Method for improving performance uniformity of high-carbon steel wire rod in same circle |
| CN113042525A (en) * | 2021-02-24 | 2021-06-29 | 广西柳钢华创科技研发有限公司 | Method for increasing thickness of scale on surface of high-speed bar and production method of HRB400E straight-bar threaded steel bar |
Non-Patent Citations (2)
| Title |
|---|
| 李伟平;: "拉丝制绳用45#优质碳素钢高线盘条的研究开发" * |
| 李伟平;: "拉丝制绳用45#优质碳素钢高线盘条的研究开发", 柳钢科技, vol. 1, no. 01, pages 22 - 24 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114836608A (en) * | 2022-04-26 | 2022-08-02 | 包头钢铁（集团）有限责任公司 | Production method for reducing performance same-circle difference of HRB400E disc spiral steel bar |
| CN114836608B (en) * | 2022-04-26 | 2024-02-23 | 包头钢铁（集团）有限责任公司 | Production method for reducing same-circle difference of HRB400E coiled steel bar performance |
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