CN116497263A - Production method of annealing-free weather-resistant wire rod for welding wire steel of vehicle - Google Patents
Production method of annealing-free weather-resistant wire rod for welding wire steel of vehicle Download PDFInfo
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- CN116497263A CN116497263A CN202310223723.7A CN202310223723A CN116497263A CN 116497263 A CN116497263 A CN 116497263A CN 202310223723 A CN202310223723 A CN 202310223723A CN 116497263 A CN116497263 A CN 116497263A
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- welding wire
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 37
- 239000010959 steel Substances 0.000 title claims abstract description 37
- 238000003466 welding Methods 0.000 title claims abstract description 34
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 238000005096 rolling process Methods 0.000 claims abstract description 29
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000007670 refining Methods 0.000 claims abstract description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 8
- 239000000956 alloy Substances 0.000 claims abstract description 8
- 238000009987 spinning Methods 0.000 claims abstract description 8
- 238000003723 Smelting Methods 0.000 claims abstract description 7
- 229910000616 Ferromanganese Inorganic materials 0.000 claims abstract description 5
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000005266 casting Methods 0.000 claims abstract description 5
- 238000009749 continuous casting Methods 0.000 claims abstract description 5
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 5
- 239000011593 sulfur Substances 0.000 claims abstract description 5
- 238000000137 annealing Methods 0.000 claims abstract description 4
- 229910052742 iron Inorganic materials 0.000 claims abstract description 4
- 238000009628 steelmaking Methods 0.000 claims abstract description 4
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 3
- 230000023556 desulfurization Effects 0.000 claims abstract description 3
- 238000010079 rubber tapping Methods 0.000 claims description 8
- 239000002893 slag Substances 0.000 claims description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 4
- 229910052698 phosphorus Inorganic materials 0.000 claims description 4
- 239000011574 phosphorus Substances 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 238000007664 blowing Methods 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 239000011651 chromium Substances 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 2
- 229910052786 argon Inorganic materials 0.000 claims description 2
- 230000003749 cleanliness Effects 0.000 claims description 2
- 229910052748 manganese Inorganic materials 0.000 claims description 2
- 239000011572 manganese Substances 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 230000009466 transformation Effects 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 239000012535 impurity Substances 0.000 claims 1
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 2
- 239000010436 fluorite Substances 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910001339 C alloy Inorganic materials 0.000 description 1
- 239000005997 Calcium carbide Substances 0.000 description 1
- 229910000604 Ferrochrome Inorganic materials 0.000 description 1
- 241001289460 Muehlenbeckia complexa Species 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- CLZWAWBPWVRRGI-UHFFFAOYSA-N tert-butyl 2-[2-[2-[2-[bis[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]amino]-5-bromophenoxy]ethoxy]-4-methyl-n-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]anilino]acetate Chemical compound CC1=CC=C(N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)C(OCCOC=2C(=CC=C(Br)C=2)N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)=C1 CLZWAWBPWVRRGI-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- C22C33/06—Making ferrous alloys by melting using master alloys
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/1206—Accessories for subsequent treating or working cast stock in situ for plastic shaping of strands
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/064—Dephosphorising; Desulfurising
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/006—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals with use of an inert protective material including the use of an inert gas
-
- 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
- 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
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
The invention discloses a production method of an annealing-free weather-proof wire rod for vehicle welding wire steel, which comprises the following steps: molten iron desulfurization, converter smelting, LF refining, billet continuous casting and high-line rolling; casting blank specification: 150X 150mm; rolling specification: phi 5.5mm; in the steelmaking production process, the carbon content in the low-carbon ferromanganese alloy with larger dosage is definitely limited, the carbon content is required to be less than or equal to 0.6 percent, the sulfur content in the steel is controlled to be between 0.006 and 0.015 percent for ensuring the quality of welding seams, and meanwhile, the rolling temperature is strictly required to realize no annealing, and the finish rolling temperature is 895 to 915 ℃ and the spinning temperature is 925 to 940 ℃. The wire rod for the welding wire, which is rolled by the invention, has lower tensile strength and yield strength, better elongation and meets the requirement of producing the weather-resistant welding wire by using the annealing-free drawing.
Description
Technical Field
The invention relates to the field of steelmaking and metal materials in metallurgical industry production, in particular to a production method of an annealing-free weather-proof wire rod for vehicle welding wire steel.
Background
With the wide application of steel structures, vehicles and trucks, weather-resistant and atmospheric corrosion-resistant steels, the demands of steel for welding (atmospheric corrosion-resistant welding rods, gas shielded welding wires, submerged arc welding wires and the like) are also increasing.
The atmospheric corrosion resistant welding material is a low-carbon alloy welding wire, has good mechanical properties, and has been widely applied to engineering machinery, bridges, pressure vessels, buildings and other industries. The steel contains Cr, ni, cu and other alloys, and in the mass production process, the conditions of alloy segregation, abnormal structure and the like exist uniformly and to a certain extent, so that drawing fracture of a user is directly caused, the smelting and rolling difficulties are high, and particularly the rolling structure is controlled strictly, and the martensitic structure is not obtained. Because of the large alloy quantity and high wire rod strength, but in order to reduce the production cost, welding wire manufacturers gradually cancel the annealing process and adopt the direct drawing process for production, so that how to realize annealing-free drawing of the wire rod for the welding wire steel for the waiting vehicle is a difficult point in the industry.
Disclosure of Invention
The invention aims to provide a production method of an annealing-free weather-proof wire rod for vehicle welding wire steel, the rolled wire rod for welding wires has lower tensile strength and yield strength and better elongation, and a user can meet the requirement of producing the weather-proof welding wires by annealing-free drawing.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention discloses a production method of an annealing-free weather-proof wire rod for vehicle welding wire steel, which comprises the following steps: molten iron desulfurization, converter smelting, LF refining, billet continuous casting and high-line rolling;
smelting by a combined blown converter, and adopting a double slag method process; slag blocking balls or slag blocking plugs are used for blocking slag during tapping; refining in a whole argon blowing state, and performing submerged arc operation; refining improves the cleanliness of steel; the molten steel is drawn and poured by a small square billet casting machine, and the casting blank has the following specification: 150X 150mm;
rolling the small square billets by a high-line 28-frame continuous rolling mill, cooling by a water tank, controlling the spinning temperature, and slowly cooling by a stelmor pneumatic cooling line to obtain good structural transformation and mechanical properties of steel; rolling specification: phi 5.5mm;
in the steelmaking production process, the carbon content in the low-carbon ferromanganese alloy with larger dosage is definitely limited, the carbon content is required to be less than or equal to 0.6 percent, the sulfur content in the steel is controlled to be between 0.006 and 0.015 percent for ensuring the quality of welding seams, and meanwhile, the rolling temperature is strictly required to realize no annealing, and the finish rolling temperature is 895 to 915 ℃ and the spinning temperature is 925 to 940 ℃.
Further, the wire rod is designed to have chemical composition of carbon content of 0.06-0.09wt%, silicon content of 0.40-0.50wt%, manganese content of 1.40-1.50wt%, phosphorus content of less than or equal to 0.015wt%, sulfur content of 0.006-0.015wt%, nickel content of 0.28-0.38wt%, chromium content of 0.32-0.40wt%, copper content of 0.22-0.28wt%, and Fe as the rest.
Further, the initial rolling temperature was 950 ℃, the finish rolling temperatures were 900 ℃ and the laying temperatures were 930 ℃.
Further, the measured initial rolling temperature of the billet was 970 ℃, the finish rolling temperature was 910 ℃, and the spinning temperature was 934 ℃.
Compared with the prior art, the invention has the beneficial technical effects that:
the wire rod for the welding wire, which is rolled by the invention, has lower tensile strength and yield strength, better elongation and meets the requirement of producing the weather-resistant welding wire by using the annealing-free drawing.
Detailed Description
A production method of wire rods for annealing-free and weather-resistant vehicle welding wire steel is characterized in that 2 furnaces of BGNH550 welding wire steel are produced in industrial trial, and specific technological parameters are controlled as follows:
1) And (3) converter production: the lime, dolomite and fluorite are added according to actual conditions during converter smelting, and low-carbon ferromanganese, ferrochrome, nickel plates and copper are added during tapping.
2) Refining in an LF furnace: LF refining is carried out, auxiliary materials are added for slagging according to the components of molten steel and the temperature change, and alloy fine adjustment and heating operation are carried out. Adding lime, fluorite and calcium carbide, and finely adjusting ferromanganese by the alloy according to refined in-place components.
The carbon content, phosphorus content and tapping temperature of the molten steel at the end of the converter are shown in Table 1.
TABLE 1BGNH550 welding wire Steel converter tapping composition and temperature
| Test furnace number | Tapping temperature, DEG C | Carbon content of steel tapping% | Phosphorus content of steel tapping, percent |
| 1# | 1633 | 0.04 | 0.011 |
| 2# | 1638 | 0.03 | 0.012 |
2) LF furnace production
TABLE 2BGNH550 wire refining LF furnace temperature control
In addition, the soft blowing time of the 2-furnace steel was 10min and 11min, respectively.
3) Continuous casting production
The superheat degree in continuous casting production is 22 ℃ and 27 ℃, the drawing speed is 2.1m/min, and the composition of molten steel is controlled as shown in table 3.
TABLE 3BGNH550 welding wire Steel finished product composition
4) Steel rolling production
In order to realize the production of weather-proof welding wires by annealing-free drawing, a wire plant rolls the 2-furnace steel, the actual measured values of the initial rolling temperature of the billet of the 2-furnace steel are 950 ℃ and 970 ℃, the finish rolling temperature is 900 ℃ and 910 ℃ respectively, and the wire laying temperature is 930 ℃ and 934 ℃ respectively.
5) Mechanical property inspection
The mechanical properties of the wire were examined as shown in Table 4.
TABLE 4 mechanical property test results
As shown by mechanical property indexes, the rolled wire rod for the welding wire has lower tensile strength and yield strength, better elongation and meets the requirement of producing the weather-resistant welding wire by using annealing-free drawing.
The above embodiments are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
Claims (4)
1. A production method of an annealing-free weather-resistant wire rod for vehicle welding wire steel is characterized by comprising the following steps of: molten iron desulfurization, converter smelting, LF refining, billet continuous casting and high-line rolling;
smelting by a combined blown converter, and adopting a double slag method process; slag blocking balls or slag blocking plugs are used for blocking slag during tapping; refining in a whole argon blowing state, and performing submerged arc operation; refining improves the cleanliness of steel; the molten steel is drawn and poured by a small square billet casting machine, and the casting blank has the following specification: 150X 150mm;
rolling the small square billets by a high-line 28-frame continuous rolling mill, cooling by a water tank, controlling the spinning temperature, and slowly cooling by a stelmor pneumatic cooling line to obtain good structural transformation and mechanical properties of steel; rolling specification: phi 5.5mm;
in the steelmaking production process, the carbon content in the low-carbon ferromanganese alloy with larger dosage is definitely limited, the carbon content is required to be less than or equal to 0.6 percent, the sulfur content in the steel is controlled to be between 0.006 and 0.015 percent for ensuring the quality of welding seams, and meanwhile, the rolling temperature is strictly required to realize no annealing, and the finish rolling temperature is 895 to 915 ℃ and the spinning temperature is 925 to 940 ℃.
2. The method for producing wire rods for annealing-free weather-resistant vehicular welding wire steel according to claim 1, wherein the wire rod design chemical composition requirements are 0.06-0.09wt% of carbon content, 0.40-0.50wt% of silicon content, 1.40-1.50wt% of manganese content, 0.015wt% or less of phosphorus content, 0.006-0.015wt% of sulfur content, 0.28-0.38wt% of nickel content, 0.32-0.40wt% of chromium content, 0.22-0.28wt% of copper content, and the balance of impurities which are unavoidable for Fe.
3. The method for producing wire rods for welding wire steel for annealing-free and weather-resistant vehicles according to claim 1, characterized in that, the initial rolling temperature is 950 ℃, the finishing rolling temperature is 900 ℃ and the spinning temperature is 930 ℃.
4. The method for producing wire rods for welding wire steel for annealing-free and weather-resistant vehicles according to claim 1, characterized in that, the measured initial rolling temperature of the billet is 970 ℃, the finish rolling temperature is 910 ℃ and the spinning temperature is 934 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310223723.7A CN116497263A (en) | 2023-03-09 | 2023-03-09 | Production method of annealing-free weather-resistant wire rod for welding wire steel of vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310223723.7A CN116497263A (en) | 2023-03-09 | 2023-03-09 | Production method of annealing-free weather-resistant wire rod for welding wire steel of vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116497263A true CN116497263A (en) | 2023-07-28 |
Family
ID=87319148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310223723.7A Pending CN116497263A (en) | 2023-03-09 | 2023-03-09 | Production method of annealing-free weather-resistant wire rod for welding wire steel of vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116497263A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107350657A (en) * | 2017-05-27 | 2017-11-17 | 内蒙古包钢钢联股份有限公司 | Weld railway vehicle dynamics gas protecting welding wire |
| CN109465566A (en) * | 2018-11-21 | 2019-03-15 | 首钢集团有限公司 | Improve production method of the high-strength weathering gas shield welding wire with wire rod with circle performance |
| CN109576577A (en) * | 2018-11-22 | 2019-04-05 | 湖南华菱湘潭钢铁有限公司 | The production method of II steel of atmospheric corrosion resistance welding wire TH550-NQ- |
| CN110042300A (en) * | 2019-04-02 | 2019-07-23 | 鞍钢股份有限公司 | Wire rod for 400 MPa-grade weather-resistant stud, production method and prepared stud |
| CN111101065A (en) * | 2020-01-20 | 2020-05-05 | 包头钢铁（集团）有限责任公司 | High-strength corrosion-resistant high-temperature-resistant welding wire steel and production method thereof |
| CN113458155A (en) * | 2021-06-03 | 2021-10-01 | 包头钢铁（集团）有限责任公司 | Production method for reducing strength of welding wire steel wire rod |
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| 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 |
| CN115747613A (en) * | 2022-11-01 | 2023-03-07 | 包头钢铁（集团）有限责任公司 | Production method of wire rod for railway sleeper steel bar |
-
2023
- 2023-03-09 CN CN202310223723.7A patent/CN116497263A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107350657A (en) * | 2017-05-27 | 2017-11-17 | 内蒙古包钢钢联股份有限公司 | Weld railway vehicle dynamics gas protecting welding wire |
| CN109465566A (en) * | 2018-11-21 | 2019-03-15 | 首钢集团有限公司 | Improve production method of the high-strength weathering gas shield welding wire with wire rod with circle performance |
| CN109576577A (en) * | 2018-11-22 | 2019-04-05 | 湖南华菱湘潭钢铁有限公司 | The production method of II steel of atmospheric corrosion resistance welding wire TH550-NQ- |
| CN110042300A (en) * | 2019-04-02 | 2019-07-23 | 鞍钢股份有限公司 | Wire rod for 400 MPa-grade weather-resistant stud, production method and prepared stud |
| CN111101065A (en) * | 2020-01-20 | 2020-05-05 | 包头钢铁（集团）有限责任公司 | High-strength corrosion-resistant high-temperature-resistant welding wire steel and production method thereof |
| CN113458155A (en) * | 2021-06-03 | 2021-10-01 | 包头钢铁（集团）有限责任公司 | Production method for reducing strength of welding wire steel wire rod |
| CN114507819A (en) * | 2022-01-28 | 2022-05-17 | 包头钢铁（集团）有限责任公司 | Production method of vehicle atmospheric corrosion resistant 500MPa grade welding wire steel |
| CN114571133A (en) * | 2022-02-16 | 2022-06-03 | 包头钢铁（集团）有限责任公司 | Weather-resistant 550 MPa-grade welding wire steel |
| 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 |
| CN115747613A (en) * | 2022-11-01 | 2023-03-07 | 包头钢铁（集团）有限责任公司 | Production method of wire rod for railway sleeper steel bar |
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