CN113584385A - Controlled cooling method for martensite/bainite-based high-strength annealing-free welding wire rod - Google Patents
Controlled cooling method for martensite/bainite-based high-strength annealing-free welding wire rod Download PDFInfo
- Publication number
- CN113584385A CN113584385A CN202110844405.3A CN202110844405A CN113584385A CN 113584385 A CN113584385 A CN 113584385A CN 202110844405 A CN202110844405 A CN 202110844405A CN 113584385 A CN113584385 A CN 113584385A
- Authority
- CN
- China
- Prior art keywords
- wire rod
- temperature
- bainite
- martensite
- salt bath
- 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.)
- Pending
Links
- 229910001563 bainite Inorganic materials 0.000 title claims abstract description 21
- 238000001816 cooling Methods 0.000 title claims abstract description 19
- 229910000734 martensite Inorganic materials 0.000 title claims abstract description 14
- 238000003466 welding Methods 0.000 title claims abstract description 11
- 238000005096 rolling process Methods 0.000 claims abstract description 20
- 150000003839 salts Chemical class 0.000 claims abstract description 16
- 238000009987 spinning Methods 0.000 claims abstract description 12
- 238000009749 continuous casting Methods 0.000 claims abstract description 11
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 7
- 239000010959 steel Substances 0.000 claims abstract description 7
- 229910001566 austenite Inorganic materials 0.000 claims abstract description 6
- 239000000498 cooling water Substances 0.000 claims abstract description 6
- 230000000717 retained effect Effects 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 10
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 229910052750 molybdenum Inorganic materials 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 2
- 230000008569 process Effects 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 4
- 229910000859 α-Fe Inorganic materials 0.000 description 4
- 238000010583 slow cooling Methods 0.000 description 3
- 238000000137 annealing Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910001562 pearlite Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011534 incubation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 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
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/001—Austenite
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/002—Bainite
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/008—Martensite
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
The invention provides a controlled cooling method of a martensite/bainite high-strength annealing-free welding wire rod, which comprises the following steps: the initial rolling temperature of the continuous casting billet is 1000-1100 ℃; the temperature of the wire rod in the rolling process, namely the inlet temperature of a finishing mill, the reducing diameter inlet temperature and the spinning temperature are controlled to 880-920 ℃ by adjusting the pressure and the flow of cooling water in each cooling water tank; after spinning, the wire rod is wholly immersed into a salt bath with the temperature lower than the Ms point of the steel in a state of loose coil and flat laying, and the isothermal time is more than 30 seconds; the wire rod is conveyed to a coil collecting station for collection after being discharged from the salt bath and entering a heat-preserving cover roller way; the finished wire rod obtains fine and uniform martensite/bainite and stable retained austenite microstructure. By controlling the temperature in the wire rod rolling process, the cooling mode after spinning and the roller speed, martensite, bainite and residual austenite structures with small and uniform sizes are obtained, and the comprehensive mechanical property is improved.
Description
Technical Field
The invention relates to the technical field of high-speed wire rod production, in particular to a controlled cooling method of a martensite/bainite-based high-strength annealing-free welding wire rod.
Background
After the production of a 50 kg-grade welding steel such as ER50-6E wire rod, spinning is carried out at a lower temperature, and then a delayed cooling (slow cooling) process is adopted on a stelmor line, a microstructure mainly comprising ferrite and pearlite can be obtained, and a downstream user can directly draw the steel to the size of a finished welding wire without annealing. The 80 kg-level welding steel contains more alloy elements (Cr, Ni, Mo, Ti and the like), so that the pearlite transformation temperature is lower, the incubation period is longer, the stelmor length is limited, even if the lower spinning temperature and the slowest roller table speed are adopted for slow cooling, the microstructure of the wire rod is ferrite and a large number of blocky horse/bainite tissues, the drawing performance is poor, and downstream users need to carry out annealing heat treatment and then carry out drawing processing. In addition, the difference of the thicknesses of the overlapping area and the non-overlapping area of the wire rod on the stelmor line is large, so that the difference of the cooling rates of the wire rod is large, and the poor same-circle organization performance of the wire rod is also an important factor for restricting the improvement of the drawing performance of the wire rod.
Disclosure of Invention
The invention aims to provide a controlled cooling method of a martensite/bainite-based high-strength annealing-free welding wire rod, which can realize annealing-free multi-pass drawing of 80 kg-grade welding steel wire rods without wire breakage, has low energy consumption and high production efficiency, and greatly reduces the production cost of downstream users.
In order to achieve the purpose, the invention provides the following technical scheme: the controlled cooling method of the horse/bainite high-strength annealing-free welding wire rod comprises the following steps: the initial rolling temperature of the continuous casting billet is 1000-1100 ℃; the temperature of the continuous casting billet in the rolling process, namely the inlet temperature of a finishing mill, the inlet temperature of a reducing diameter and the spinning temperature are controlled to 880-920 ℃ by adjusting the pressure and the flow of cooling water of each cooling water tank; after spinning, the wire rod is wholly immersed into a salt bath with the temperature lower than the Ms point of the steel in a state of loose coil and flat laying, and the isothermal time is more than 30 seconds; the wire rod is conveyed to a coil collecting station for collection after being discharged from the salt bath and entering a heat-preserving cover roller way; the finished wire rod obtains fine and uniform martensite/bainite and stable retained austenite microstructure.
Preferably, the continuous casting slab comprises the following components in percentage by weight: 0.06-0.10 wt.%, Si: 0.40-0.70 wt.%, Mn: 1.40-1.80 wt.%, Ni: 1.60-2.40 wt.%, Cr: 0.3-0.60 wt.%, Mo: 0.30-0.50 wt.%, Ti ≤ 0.10 wt.%, and P: 0.025 wt.%, S: less than or equal to 0.025 wt.%; the balance being Fe and inevitable impurities.
Preferably, the continuous casting slab is heated to the initial rolling temperature and is rolled after being kept at the initial rolling temperature for 1-3 hours.
Preferably, the rolling speed of the continuous casting slab is 110 m/s.
Preferably, the salt bath is a constant-temperature salt bath, and the temperature is controlled at 280-315 ℃.
The invention has the beneficial effects that:
by controlling the temperature in the wire rod rolling process, the cooling mode after spinning and the roller speed, martensite, bainite and residual austenite structures with small and uniform sizes are obtained, and the comprehensive mechanical property is improved. In addition, the cooling mode of completely immersing in the constant-temperature salt bath solves the inherent defect that the cooling speed of the lapping point and the non-lapping point of the wire rod is inconsistent when the traditional stelmor wire upper cover heat preservation cover is slowly cooled, so that the wire rod obtains good through-loop microstructure and mechanical property uniformity.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
This example illustrates the controlled cooling method for a horse/bainite based high strength anneal free wire rod, and the hot rolled wire rod for 80 kg grade wire used in the example has the chemical composition shown in table 1.
Table 1 chemical composition/wt.% of the example wire rod
Heating a continuous casting billet with the size of 180 x 240mm to the initial rolling temperature of 1000 ℃, keeping the temperature for 1-3h, and then performing initial rolling at the rolling speed of 110 m/s. The temperature in the rolling process and the spinning temperature are controlled as shown in Table 2, the wire rod is conveyed by a roller way in a loose-coil and flat-laid state through a constant-temperature salt bath at the temperature of 280-315 ℃, and the medium-temperature time of the wire rod in the salt bath is 1-5 minutes; and (4) immediately entering a heat-preserving cover for slow cooling after the salt bath is discharged out until the salt bath is collected by a coil collecting station.
TABLE 2 examples controlled cooling parameters after rolling and rolling process
The structural properties of the wire rod obtained in this example are shown in table 3 in comparison with those of the wire rod obtained by the conventional process. The traditional process has the wire rod structure of partial ferrite and a large amount of massive martensite/bainite structure, and if the wire rod structure is not annealed, a user generates micro-cracks due to uneven stress distribution of the ferrite and the martensite/bainite in the drawing process so as to generate drawing fracture. In the embodiment, the wire rod directly enters the constant-temperature salt bath for quenching after spinning, a martensite/bainite + stable residual austenite structure with small and uniform size is obtained, although the tensile strength of the wire rod is 50-60MPa higher than that of the traditional process, the reduction of area is improved at the same time, and the wire rod is not easy to break in the drawing process.
Table 3 comparison of the structural properties of the wire rod of the examples with those of the wire rod of the conventional process
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A controlled cooling method for a martensite/bainite high-strength annealing-free welding wire rod is characterized by comprising the following steps: the initial rolling temperature of the continuous casting billet is 1000-1100 ℃; the temperature of the wire rod in the rolling process, namely the inlet temperature of a finishing mill, the reducing diameter inlet temperature and the spinning temperature are controlled to 880-920 ℃ by adjusting the pressure and the flow of cooling water in each cooling water tank; after spinning, the wire rod is wholly immersed into a salt bath with the temperature lower than the Ms point of the steel in a state of loose coil and flat laying, and the isothermal time is more than 30 seconds; the wire rod is conveyed to a coil collecting station for collection after being discharged from the salt bath and entering a heat-preserving cover roller way; the finished wire rod obtains fine and uniform martensite/bainite and stable retained austenite microstructure.
2. The controlled cooling method of the horse/bainite-based high-strength annealing-free wire rod according to claim 1, wherein the components of the continuous casting billet are, in weight percent, C: 0.06-0.10 wt.%, Si: 0.40-0.70 wt.%, Mn: 1.40-1.80 wt.%, Ni: 1.60-2.40 wt.%, Cr: 0.3-0.60 wt.%, Mo: 0.30-0.50 wt.%, Ti ≤ 0.10 wt.%, and P: 0.025 wt.%, S: less than or equal to 0.025 wt.%; the balance being Fe and inevitable impurities.
3. The method for controlled cooling of a horse/bainite-based high strength anneal-free wire rod according to claim 1, wherein: and heating the continuous casting blank to the initial rolling temperature, and keeping the temperature for 1-3 hours before rolling.
4. The method for controlled cooling of a horse/bainite-based high strength anneal-free wire rod according to claim 3, wherein: the rolling speed of the continuous casting billet is 110 m/s.
5. The method for controlled cooling of a horse/bainite-based high strength anneal-free wire rod according to claim 1, wherein: the salt bath is a constant-temperature salt bath, and the temperature is controlled at 280-315 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110844405.3A CN113584385A (en) | 2021-07-26 | 2021-07-26 | Controlled cooling method for martensite/bainite-based high-strength annealing-free welding wire rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110844405.3A CN113584385A (en) | 2021-07-26 | 2021-07-26 | Controlled cooling method for martensite/bainite-based high-strength annealing-free welding wire rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113584385A true CN113584385A (en) | 2021-11-02 |
Family
ID=78250139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110844405.3A Pending CN113584385A (en) | 2021-07-26 | 2021-07-26 | Controlled cooling method for martensite/bainite-based high-strength annealing-free welding wire rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113584385A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114293107A (en) * | 2021-12-31 | 2022-04-08 | 江苏永钢集团有限公司 | Gas shielded welding alloy welding wire steel wire rod and production method thereof |
| CN114875332A (en) * | 2022-05-30 | 2022-08-09 | 湖南华菱湘潭钢铁有限公司 | Production method of annealing-free wire rod for high-strength alloy welding wire of 80 kilograms or more |
| CN117127002A (en) * | 2023-10-26 | 2023-11-28 | 江苏永钢集团有限公司 | Online flexible heat treatment production line and production process for high-speed wire of high-grade special steel |
| CN118007026A (en) * | 2024-04-09 | 2024-05-10 | 江苏永钢集团有限公司 | Hot-rolled 1300 MPa-level B-containing spring steel wire rod and production process thereof |
| CN118207405A (en) * | 2024-05-21 | 2024-06-18 | 江苏永钢集团有限公司 | 10.9-Grade high Cr annealing-free cold heading steel hot rolled wire rod and manufacturing method thereof |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5141570A (en) * | 1985-08-29 | 1992-08-25 | Kabushiki Kaisha Kobe Seiko Sho | High strength low carbon steel wire rods |
| CN102912101A (en) * | 2012-10-19 | 2013-02-06 | 攀钢集团成都钢钒有限公司 | Production process of 65 Mn spring steel wire rod and 65 Mn spring steel wire rod |
| US20130167983A1 (en) * | 2010-09-09 | 2013-07-04 | Tata Steel Uk Limited | Super bainite steel and method for manufacturing it |
| US20150191805A1 (en) * | 2012-08-09 | 2015-07-09 | Posco | Steel Wire Rod Having High Strength and Ductility and Method for Producing Same |
| CN105132804A (en) * | 2015-09-06 | 2015-12-09 | 南京钢铁股份有限公司 | Method for rolling vanadium-titanium welding steel hot-rolled wire rod |
| CN105886937A (en) * | 2016-05-31 | 2016-08-24 | 安阳钢铁股份有限公司 | Low-cost and ultrahigh-strength steel wire rod for round-link chain and manufacturing method of low-cost and ultrahigh-strength steel wire rod |
| CN107299280A (en) * | 2017-08-22 | 2017-10-27 | 青岛特殊钢铁有限公司 | 2000MPa grades of cable steel wires heat treatment wire rod and production method |
| CN111197140A (en) * | 2020-02-12 | 2020-05-26 | 首钢集团有限公司 | Wire rod for deep drawing cold drawing spring steel wire and preparation method thereof |
| CN111424209A (en) * | 2020-03-25 | 2020-07-17 | 中国铁道科学研究院集团有限公司 | 2100 MPa-strength prestressed steel strand and production process thereof |
| CN112090956A (en) * | 2020-09-01 | 2020-12-18 | 武汉钢铁有限公司 | Production control method of wire rod for low-segregation high-torsion bridge cable |
| CN112375975A (en) * | 2020-10-28 | 2021-02-19 | 南京钢铁股份有限公司 | Steel for extremely high-strength wire and production method of net-shaped cementite controlled by hot-rolled wire rod of steel |
| CN112391584A (en) * | 2020-11-26 | 2021-02-23 | 青岛特殊钢铁有限公司 | Heat treatment wire rod for 2060MPa bridge cable steel wire and production method thereof |
| CN112501498A (en) * | 2020-10-20 | 2021-03-16 | 江苏省沙钢钢铁研究院有限公司 | Wire rod for 2300MPa prestressed steel strand and production method thereof |
| CN112501506A (en) * | 2020-11-15 | 2021-03-16 | 江苏永钢集团有限公司 | Steel wire rod for bridge cable and manufacturing method thereof |
| CN112680669A (en) * | 2020-12-22 | 2021-04-20 | 芜湖新兴铸管有限责任公司 | High-strength alloy cold forging steel B7 wire rod and production method thereof |
-
2021
- 2021-07-26 CN CN202110844405.3A patent/CN113584385A/en active Pending
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5141570A (en) * | 1985-08-29 | 1992-08-25 | Kabushiki Kaisha Kobe Seiko Sho | High strength low carbon steel wire rods |
| US20130167983A1 (en) * | 2010-09-09 | 2013-07-04 | Tata Steel Uk Limited | Super bainite steel and method for manufacturing it |
| US20150191805A1 (en) * | 2012-08-09 | 2015-07-09 | Posco | Steel Wire Rod Having High Strength and Ductility and Method for Producing Same |
| CN102912101A (en) * | 2012-10-19 | 2013-02-06 | 攀钢集团成都钢钒有限公司 | Production process of 65 Mn spring steel wire rod and 65 Mn spring steel wire rod |
| CN105132804A (en) * | 2015-09-06 | 2015-12-09 | 南京钢铁股份有限公司 | Method for rolling vanadium-titanium welding steel hot-rolled wire rod |
| CN105886937A (en) * | 2016-05-31 | 2016-08-24 | 安阳钢铁股份有限公司 | Low-cost and ultrahigh-strength steel wire rod for round-link chain and manufacturing method of low-cost and ultrahigh-strength steel wire rod |
| CN107299280A (en) * | 2017-08-22 | 2017-10-27 | 青岛特殊钢铁有限公司 | 2000MPa grades of cable steel wires heat treatment wire rod and production method |
| CN111197140A (en) * | 2020-02-12 | 2020-05-26 | 首钢集团有限公司 | Wire rod for deep drawing cold drawing spring steel wire and preparation method thereof |
| CN111424209A (en) * | 2020-03-25 | 2020-07-17 | 中国铁道科学研究院集团有限公司 | 2100 MPa-strength prestressed steel strand and production process thereof |
| CN112090956A (en) * | 2020-09-01 | 2020-12-18 | 武汉钢铁有限公司 | Production control method of wire rod for low-segregation high-torsion bridge cable |
| CN112501498A (en) * | 2020-10-20 | 2021-03-16 | 江苏省沙钢钢铁研究院有限公司 | Wire rod for 2300MPa prestressed steel strand and production method thereof |
| CN112375975A (en) * | 2020-10-28 | 2021-02-19 | 南京钢铁股份有限公司 | Steel for extremely high-strength wire and production method of net-shaped cementite controlled by hot-rolled wire rod of steel |
| CN112501506A (en) * | 2020-11-15 | 2021-03-16 | 江苏永钢集团有限公司 | Steel wire rod for bridge cable and manufacturing method thereof |
| CN112391584A (en) * | 2020-11-26 | 2021-02-23 | 青岛特殊钢铁有限公司 | Heat treatment wire rod for 2060MPa bridge cable steel wire and production method thereof |
| CN112680669A (en) * | 2020-12-22 | 2021-04-20 | 芜湖新兴铸管有限责任公司 | High-strength alloy cold forging steel B7 wire rod and production method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 曾正明: "《实用钢材手册》", 31 July 2015, 金盾出版社 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114293107A (en) * | 2021-12-31 | 2022-04-08 | 江苏永钢集团有限公司 | Gas shielded welding alloy welding wire steel wire rod and production method thereof |
| CN114875332A (en) * | 2022-05-30 | 2022-08-09 | 湖南华菱湘潭钢铁有限公司 | Production method of annealing-free wire rod for high-strength alloy welding wire of 80 kilograms or more |
| CN117127002A (en) * | 2023-10-26 | 2023-11-28 | 江苏永钢集团有限公司 | Online flexible heat treatment production line and production process for high-speed wire of high-grade special steel |
| CN118007026A (en) * | 2024-04-09 | 2024-05-10 | 江苏永钢集团有限公司 | Hot-rolled 1300 MPa-level B-containing spring steel wire rod and production process thereof |
| CN118207405A (en) * | 2024-05-21 | 2024-06-18 | 江苏永钢集团有限公司 | 10.9-Grade high Cr annealing-free cold heading steel hot rolled wire rod and manufacturing method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113584385A (en) | Controlled cooling method for martensite/bainite-based high-strength annealing-free welding wire rod | |
| CN109468530B (en) | Hot-rolled wire rod for galvanized steel wire of bridge cable rope with over 2000MPa level and production method | |
| CN103510011B (en) | High-strength steel plate for enamel liner and manufacturing method thereof | |
| US20220364199A1 (en) | A method for controlling carbide network in a bearing steel wire rod by controlling cooling and controlling rolling | |
| CN106319368A (en) | Economical thin chain plate and manufacturing method thereof | |
| CN103074546A (en) | Cold-rolled strip steel for condenser tube of refrigerator and manufacturing method thereof | |
| CN118186310B (en) | 12.9-Grade quenching-free high-hardenability hot-rolled multiphase cold heading steel wire rod and manufacturing method thereof | |
| CN101994065A (en) | 550Mpa cold-rolled steel plate with good weather resistance and preparation method thereof | |
| CN107287513B (en) | Tin plate and preparation method thereof | |
| CN101818299A (en) | High-strength thin-specification direct-plating steel based on thin slab casting and rolling process and making method thereof | |
| CN103540850B (en) | The super thick steel for engineering machinery of yield strength >=550MPa and production method | |
| CN118166190B (en) | Hot-rolled wire rod for 12.9-grade low-chromium fire-reducing bolt and manufacturing method thereof | |
| CN113680814B (en) | Method for controlling iron scale on surface of medium-carbon low-alloy wire | |
| CN108193138B (en) | 980 MPa-grade cold-rolled high-strength Q & P steel for automobiles and production method thereof | |
| CN104073744B (en) | The high tenacity X80 pipe line steel coiled sheet of thickness >=18.5mm and production method | |
| CN1974824A (en) | Continuous casting and rolling process for producing thin IF billet | |
| CN115537669B (en) | Production method of continuously annealed low-alloy high-strength cold-rolled steel plate | |
| CN115446116A (en) | Production method of high-strength-plasticity 82B hot-rolled wire rod | |
| CN115838855A (en) | CrMo steel hot-rolled bar structure control method | |
| CN118360553B (en) | 9.8-Grade hot-rolled carbon non-cold-heading steel wire rod and manufacturing method thereof | |
| CN118621220B (en) | Cold heading steel high-carbon wire rod for 14.9-grade bolt and manufacturing method thereof | |
| CN118086790B (en) | Hot-rolled cold heading steel wire rod for annealing-free 8.8-grade bolt and manufacturing method thereof | |
| CN115261736B (en) | Corrosion-resistant wire rod based on microalloying and production process thereof | |
| CN118639121B (en) | High-carbon cold heading steel wire rod for 15.9-grade bolt and manufacturing method thereof | |
| CN105714197A (en) | High-strength and easy-to-stamp-form cold-rolled steel plate and production method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211102 |