CN110819899B - Steel for 2100MPa grade marine steel wire rope and production method thereof - Google Patents

Steel for 2100MPa grade marine steel wire rope and production method thereof Download PDF

Info

Publication number
CN110819899B
CN110819899B CN201911133656.XA CN201911133656A CN110819899B CN 110819899 B CN110819899 B CN 110819899B CN 201911133656 A CN201911133656 A CN 201911133656A CN 110819899 B CN110819899 B CN 110819899B
Authority
CN
China
Prior art keywords
percent
equal
steel
steel wire
wire rope
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.)
Active
Application number
CN201911133656.XA
Other languages
Chinese (zh)
Other versions
CN110819899A (en
Inventor
姜婷
汪开忠
于同仁
胡芳忠
张晓瑞
郭湛
龚梦强
尹德福
吴科成
丁雷
余良其
柯鹏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maanshan Iron and Steel Co Ltd
Original Assignee
Maanshan Iron and Steel Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Maanshan Iron and Steel Co Ltd filed Critical Maanshan Iron and Steel Co Ltd
Priority to CN201911133656.XA priority Critical patent/CN110819899B/en
Publication of CN110819899A publication Critical patent/CN110819899A/en
Application granted granted Critical
Publication of CN110819899B publication Critical patent/CN110819899B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • C22C38/04—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
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • 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
    • C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum

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 discloses a 2100MPa grade steel for marine steel wire rope and a production method thereof, wherein the 2100MPa grade steel for marine steel wire rope comprises the following chemical components in percentage by weight: 0.95 to 1.10 percent of C, 0.10 to 0.50 percent of Si, 0.60 to 1.20 percent of Mn, 0.10 to 0.50 percent of Cr, 0.02 to 0.10 percent of Nb, 0.01 to 0.50 percent of Ni, less than or equal to 0.005 percent of Al, less than or equal to 0.015 percent of P, less than or equal to 0.015 percent of S, less than or equal to 0.0015 percent of O, less than or equal to 0.006 percent of N, and the balance of Fe and inevitable impurity elements. The invention adopts specific chemical components and a wire rod production process, and the rolled hot-rolled wire rod has excellent mechanical property and higher sorbite rate; the processed steel wire rope has the strength of more than 2100MPa, has better torsion performance and bending performance, and is suitable for manufacturing 2100 MPa-grade high-strength marine steel wire ropes.

Description

Steel for 2100MPa grade marine steel wire rope and production method thereof
Technical Field
The invention belongs to the technical field of steel wire rope production, and relates to steel for a 2100 MPa-grade marine steel wire rope and a production method thereof.
Background
A steel wire rope is a flexible rope formed by twisting a plurality of or a plurality of strands of thin steel wires. The steel wire rope has high strength, light dead weight, stable work, difficult sudden whole breakage and reliable work. Due to the unique performance of the steel wire rope, a more ideal product for replacing the steel wire rope comprehensively or in one field has not been found at home and abroad so far. The common steel grades for high-carbon steel wire ropes all adopt a C-Si-Mn component system. If only depending on C or Si, Mn to strengthen, although can also achieve the strength requirement, but very easy to appear network cementite and core martensite, seriously harms the material performance, especially the plasticity and toughness reduces sharply. In addition, the steel wire is recovered during hot galvanizing, and the number of twists is also reduced by offsetting a part of the increase of the drawing strength, which is a problem that is difficult to avoid in the steel wire processing process.
Chinese patent CN 105671443B discloses a hot-rolled wire rod for 1960 MPa-level cable galvanized steel wires and a production method thereof, after the wire rod obtained by the method is subjected to drawing, galvanizing and stabilizing treatment, the tensile strength of the steel wire meets the requirements of being more than or equal to 1960MPa, the torsion index is more than or equal to 14 times, and the hot-rolled wire rod can be used for producing 1960 MPa-level bridge cable galvanized steel wires, but the steel wires produced by the method can not meet the material requirements of steel wire ropes of 2000 MPa-level and above. Chinese patent CN 103498355B discloses a corrosion resistant steel wire rope, which provides steel wire rope with steel components that have outstanding corrosion resistance and thus do not need to be galvanized. However, the steel wire rope is high in cost due to the addition of a large amount of noble metal elements such as Cr, Ni and Mo, and the strength of the steel wire rope cannot be guaranteed due to the low content of C. Wu Guanghu et al published a paper report entitled "1960 MPa grade galvanized steel wire production process research", introduced the production process of using 82B wire rod to process 1960MPa grade marine galvanized steel wire rope, it discussed the factors that influence the performance of the steel wire in the drawing process, through the experiment made the drawn rope steel wire have high strength, toughness good characteristics, the deficiency was that the strength of the galvanized steel wire rope only reached 1960MPa grade.
The maritime work steel wire rope is a steel wire rope used by ocean engineering equipment, the ocean economic development of China is going from shallow sea to deep sea at present, the ocean engineering construction is developed vigorously, and accordingly the maritime work steel wire rope demand is larger and larger, and the quality requirement is higher and higher; at present, wire ropes of 1470MPa to 1960MPa are successfully developed in China, but with the continuous improvement of national construction requirements, particularly the requirements of ocean engineering equipment, the development of steel wire rods special for marine wire ropes of 2100MPa grade and higher strength is urgently needed.
Disclosure of Invention
In order to solve the problems, the invention provides steel for a marine steel wire rope and a production method thereof, and the steel adopts specific chemical components and a wire rod production process, and the rolled hot-rolled wire rod has excellent mechanical property and higher sorbite rate; the processed steel wire rope has the strength of more than 2100MPa, has better torsion performance and bending performance, and is suitable for manufacturing 2100 MPa-grade high-strength marine steel wire ropes.
The specific technical scheme of the invention is as follows:
the steel for the 2100 MPa-grade marine steel wire rope comprises the following chemical components in percentage by weight: 0.95 to 1.10 percent of C, 0.10 to 0.50 percent of Si, 0.60 to 1.20 percent of Mn, 0.10 to 0.50 percent of Cr, 0.02 to 0.10 percent of Nb, 0.01 to 0.50 percent of Ni, less than or equal to 0.005 percent of Al, less than or equal to 0.015 percent of P, less than or equal to 0.015 percent of S, less than or equal to 0.0015 percent of O, less than or equal to 0.006 percent of N, and the balance of Fe and inevitable impurity elements.
C: c is the most basic effective strengthening element in steel for wire ropes. However, as the content increases, the ductility decreases, and the C content is controlled to 0.95% to 1.10%.
Si: si plays a role of deoxidation in steel, and improves the strength of steel by solid solution strengthening. However, excessive Si can deteriorate the cold wire drawing performance of steel, in addition, the increase of Si element can increase the diffusion of carbon in the steel and intensify the decarburization of the steel, and the Si content is controlled to be 0.10-0.50%.
Mn: mn and Fe form a solid solution, and the hardness and strength of ferrite and austenite in the steel are improved. However, excessive Mn increases segregation of grain boundaries, which causes the wire rod to form a martensite structure, and leads to fracture of the steel wire during drawing, and the Mn content is controlled to be 0.60-1.20%.
Cr: cr element increases the stability of austenite in steel, refines pearlite lamella and improves the toughness of the material. But Cr increases the hardenability of steel, excessive Cr causes abnormal structure of hot-rolled wire rods, and the Cr content is controlled to be 0.10-0.50%.
Nb: nb delays the growth of crystal grains and recrystallization to refine the crystal grains during hot rolling, and simultaneously limits nucleation and crystal grain growth during annealing, thereby improving the strength and toughness of the steel. The grain refinement effect is not obvious after the Nb is excessive, the cost is increased, and the Nb content is controlled to be 0.02-0.10 percent.
Ni: ni can generate an infinitely miscible solid solution with Fe, strengthen ferrite, refine and increase pearlite, and improve the strength and toughness of the steel. However, nickel is a noble metal element, and the cost of excessive addition is high. The Ni content is controlled to be 0.01-0.50%.
Al: al is easy to produce brittle non-metallic inclusion Al in steel2O3The drawing performance and the fatigue performance of steel for the steel wire rope are damaged, and the content of Al is controlled to be less than or equal to 0.005 percent.
S and P: sulphur readily forms MnS inclusions with manganese in steel; p is an element with strong segregation tendency, and commonly causes the co-segregation of sulfur and manganese, which is harmful to the uniformity of product structure and performance, and the P is controlled to be less than or equal to 0.015 percent, and the S is controlled to be less than or equal to 0.015 percent.
O and N: o forms oxide inclusions in the steel, and T.O is controlled to be less than or equal to 0.0015%; n precipitation of Fe in steel4N is low in diffusion speed, so that the steel has timeliness, and simultaneously, the cold processing performance of the steel is reduced by the N, and the N is controlled to be less than or equal to 0.006%.
A production method of steel for 2100MPa marine steel wire ropes comprises the following steps: adopting electric arc furnace smelting → LF furnace refining → RH vacuum degassing → rectangular billet continuous casting → heating → small square billet rolling → peeling → heating → high-speed wire rod controlled rolling → stelmor cooling line controlled cooling → wire rod finished product;
when the wire rod is rolled, a controlled rolling and controlled cooling process is adopted for rolling, and the controlled cooling process parameters are as follows: the heating temperature is 1000-1100 ℃, the initial rolling temperature is 900-980 ℃, and the spinning temperature is 850-900 ℃; the stelmor fast cooling section cooling speed is 10-15 ℃/s, isothermal phase change is carried out at 550-650 ℃, and the coiling temperature is 350-450 ℃.
Further, the mechanical properties of the hot-rolled wire rod obtained by the production method are as follows: tensile strength RmThe percentage elongation A is more than or equal to 1350MPa, the percentage shrinkage Z after fracture is more than or equal to 35 percent, and the sorbite percentage is 95 percent.
Further, after the hot-rolled wire rod obtained by the production method is subjected to drawing, galvanizing and stabilizing treatment by a straight-forward continuous wire drawing machine, the obtained galvanized steel wire rope for maritime work has the following mechanical properties: the tensile strength Rm is more than or equal to 2100MPa, the torsion frequency is more than or equal to 29 times, and the bending frequency is more than or equal to 14 times.
Compared with the prior art, the 2100MPa galvanized steel wire rope steel produced by the invention has the following performance of hot rolled wire rods: tensile strength RmThe elongation A is more than or equal to 1350MPa, the reduction rate Z of the fracture surface is more than or equal to 35 percent, and the sorbitizing rate is 95 percent; the mechanical property of the manufactured galvanized steel wire can meet the following requirements: tensile strength RmThe steel wire rope can completely meet the use requirement of a 2100 MPa-grade high-strength marine steel wire rope, wherein the steel wire rope is more than or equal to 2100MPa, the torsion frequency is more than or equal to 29 times, and the bending frequency is more than or equal to 14 times.
Drawings
FIG. 1 is a hot rolled microstructure of a wire rod according to example 1.
Detailed Description
The present invention will be further described with reference to the following examples.
TABLE 1 chemical composition in wt% of inventive examples
Case(s) C Si Mn Cr Nb Ni Al P S O N
Example 1 1.01 0.25 0.79 0.28 0.043 0.22 0.004 0.007 0.002 0.0008 0.0035
Example 2 0.95 0.37 1.02 0.41 0.050 0.34 0.004 0.010 0.002 0.0007 0.0039
Example 3 1.07 0.18 0.67 0.22 0.033 0.18 0.003 0.008 0.001 0.0009 0.0035
Comparative example 0.88 0.21 0.78 / / / 0.020 0.011 0.001 0.0014 0.0033
TABLE 2 specific process parameters of the manufacturing methods of the example wire of the present invention and the comparative example wire
Figure BDA0002279007240000031
TABLE 3 mechanical Properties and sorbitizing ratio of hot-rolled wire rods according to the invention
Figure BDA0002279007240000032
Figure BDA0002279007240000041
TABLE 4 mechanical Properties of galvanized steel wires of examples of the invention and comparative examples
Examples Rm/MPa 360 degree twist/turn 180 degree bend/turn
Example 1 2195 31 15
Example 2 2213 29 14
Example 3 2228 30 15
Comparative example 1971 26 13
The specific implementation of the steel grade is shown in the following tables 1-4, and the steel grade is prepared by adopting electric arc furnace smelting → LF furnace refining → RH vacuum degassing → 380mm multiplied by 450mm rectangular billet continuous casting → heating → rolling is 150mm multiplied by 150mm square billet → peeling → heating → high-speed wire rod control rolling → stelmor cooling control → wire rod finished product.
When the wire rod is rolled, a controlled rolling and controlled cooling process is adopted for rolling, and the controlled cooling process parameters are as follows: the heating temperature is 1000-1100 ℃, the initial rolling temperature is 900-980 ℃, and the spinning temperature is 850-900 ℃; the stelmor fast cooling section cooling speed is 10-15 ℃/s, isothermal phase change is carried out at 550-650 ℃, and the coiling temperature is 350-450 ℃. The mechanical properties and metallographic structure of the hot rolled wire rod are shown in table 3.
The hot-rolled wire rod is used as a raw material of the steel wire rope, the steel wire rope is produced by utilizing equipment such as a straight-line continuous wire drawing machine, a lead bath quenching machine, a galvanizing machine and a stranding machine and a conventional steel wire rope production process, and the mechanical properties of the obtained galvanized steel wire rope for maritime work are shown in table 4 after the steel wire rope is subjected to drawing, galvanizing and stabilizing treatment.
The tensile strength of the comparative example is 1971MPa, the number of times of torsion is 26, the number of times of bending is 13, and the comparative example can not produce the 2100 MPa-grade galvanized steel wire rope for marine engineering. The tensile strength of the steel wire rope is more than or equal to 2100MPa, the number of times of torsion reaches more than 29 times, and the number of times of bending reaches more than 14 times, so that the steel wire rope can completely meet the use requirements of a 2100 MPa-grade high-strength marine steel wire rope.
The above description is only for specific exemplary description of the present invention, and it should be noted that the specific implementation of the present invention is not limited by the above manner, and it is within the protection scope of the present invention as long as various insubstantial modifications are made by using the technical idea and technical solution of the present invention, or the technical idea and technical solution of the present invention are directly applied to other occasions without modifications.

Claims (3)

1. The steel for the 2100 MPa-grade marine steel wire rope is characterized by comprising the following chemical components in percentage by weight: 0.95 to 1.10 percent of C, 0.10 to 0.50 percent of Si, 0.60 to 1.20 percent of Mn, 0.10 to 0.50 percent of Cr, 0.02 to 0.10 percent of Nb, 0.01 to 0.50 percent of Ni, less than or equal to 0.005 percent of Al, less than or equal to 0.015 percent of P, less than or equal to 0.015 percent of S, less than or equal to 0.0015 percent of O, less than or equal to 0.006 percent of N, and the balance of Fe and inevitable impurity elements;
the production steps are as follows: adopting electric arc furnace smelting → LF furnace refining → RH vacuum degassing → rectangular billet continuous casting → heating → small square billet rolling → peeling → heating → high-speed wire rod controlled rolling → stelmor cooling line controlled cooling → wire rod finished product;
when the wire rod is rolled, a controlled rolling and controlled cooling process is adopted for rolling, and the controlled cooling process parameters are as follows: the heating temperature is 1000-1100 ℃, the initial rolling temperature is 900-980 ℃, and the spinning temperature is 850-900 ℃; the stelmor fast cooling section cooling speed is 10-15 ℃/s, isothermal phase change is carried out at 550-650 ℃, and the coiling temperature is 350-450 ℃.
2. The steel for the 2100MPa grade marine steel wire rope according to claim 1, wherein the mechanical properties of the hot-rolled wire rod obtained by the production method are as follows: tensile strength RmThe percentage elongation A is more than or equal to 1350MPa, the percentage shrinkage Z after fracture is more than or equal to 35 percent, and the sorbite percentage is 95 percent.
3. The steel for the 2100 MPa-grade maritime work steel wire rope according to claim 1, wherein the mechanical properties of the obtained hot-rolled wire rod after the hot-rolled wire rod obtained by the production method is subjected to drawing, galvanizing and stabilizing treatment by a straight-line continuous wire drawing machine are as follows: the tensile strength Rm is more than or equal to 2100MPa, the torsion frequency is more than or equal to 29 times, and the bending frequency is more than or equal to 14 times.
CN201911133656.XA 2019-11-19 2019-11-19 Steel for 2100MPa grade marine steel wire rope and production method thereof Active CN110819899B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911133656.XA CN110819899B (en) 2019-11-19 2019-11-19 Steel for 2100MPa grade marine steel wire rope and production method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911133656.XA CN110819899B (en) 2019-11-19 2019-11-19 Steel for 2100MPa grade marine steel wire rope and production method thereof

Publications (2)

Publication Number Publication Date
CN110819899A CN110819899A (en) 2020-02-21
CN110819899B true CN110819899B (en) 2021-09-14

Family

ID=69556779

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911133656.XA Active CN110819899B (en) 2019-11-19 2019-11-19 Steel for 2100MPa grade marine steel wire rope and production method thereof

Country Status (1)

Country Link
CN (1) CN110819899B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115233100B (en) * 2022-07-20 2023-06-16 江苏英杰光缆科技有限公司 Production process of galvanized steel wire rope for ocean engineering

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1341155A (en) * 1999-12-22 2002-03-20 新日本制铁株式会社 Direct patenting high strength wire rod and method for producing same
CN102181786A (en) * 2011-04-25 2011-09-14 江苏省沙钢钢铁研究院有限公司 Coil rod used for 1670MPa level bridge cable zinc-coated wire and preparation method of coil rod
CN104213033A (en) * 2014-09-03 2014-12-17 马钢(集团)控股有限公司 60-steel hot rolling coil rod with high strength and high plasticity and production method thereof
CN105112808A (en) * 2015-10-10 2015-12-02 武汉钢铁(集团)公司 High-strength marine riser steel and production method
CN108486478A (en) * 2018-05-31 2018-09-04 马鞍山钢铁股份有限公司 A kind of 1960MPa grades of ocean engineering galvanized steel wire rope and its production method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1341155A (en) * 1999-12-22 2002-03-20 新日本制铁株式会社 Direct patenting high strength wire rod and method for producing same
CN102181786A (en) * 2011-04-25 2011-09-14 江苏省沙钢钢铁研究院有限公司 Coil rod used for 1670MPa level bridge cable zinc-coated wire and preparation method of coil rod
CN104213033A (en) * 2014-09-03 2014-12-17 马钢(集团)控股有限公司 60-steel hot rolling coil rod with high strength and high plasticity and production method thereof
CN105112808A (en) * 2015-10-10 2015-12-02 武汉钢铁(集团)公司 High-strength marine riser steel and production method
CN108486478A (en) * 2018-05-31 2018-09-04 马鞍山钢铁股份有限公司 A kind of 1960MPa grades of ocean engineering galvanized steel wire rope and its production method

Also Published As

Publication number Publication date
CN110819899A (en) 2020-02-21

Similar Documents

Publication Publication Date Title
CN101765672B (en) Wire rod and high-strength steel wire excellent in ductility, and processes for production of both
JP6180351B2 (en) High strength steel wire and high strength steel wire with excellent stretchability
JP2921978B2 (en) Manufacturing method of high strength and high ductility ultrafine steel wire
US20100212786A1 (en) High-Strength Steel Wire Excellent In Ductility and Method of Manufacturing the Same
KR910001324B1 (en) High strength and toughness steel bar rod and wire and the process of producing the same
CN110832096A (en) High-strength steel wire
WO2016158901A1 (en) High-carbon steel wire material with excellent wire drawability, and steel wire
CN109023074B (en) Hot-rolled wire rod for cord thread with tensile strength of 4000MPa and production method
JP5977699B2 (en) High-strength wire for high-strength steel wire, high-strength steel wire, high-strength galvanized steel wire, and manufacturing method thereof
CN109554631B (en) Low alloy steel and high-strength high-plasticity wire rod prepared from same and used for processing steel wire
JP3601388B2 (en) Method of manufacturing steel wire and steel for steel wire
CN110819899B (en) Steel for 2100MPa grade marine steel wire rope and production method thereof
JPH0853737A (en) High strength and high toughness hot-dip plated steel wire and its production
JP3536684B2 (en) Steel wire with excellent wire drawing workability
JP3283332B2 (en) High-strength ultrafine steel wire with excellent stranded wire workability and method for producing the same
JP3725576B2 (en) Manufacturing method of high strength galvanized steel wire
JP2000345294A (en) Steel wire rod, extra-fine steel wire, and stranded steel wire
JP2023536530A (en) Steel for high-strength long-fatigue-life cable, wire rod, and manufacturing method thereof
JPH07179994A (en) Hyper-eutectoid steel wire having high strength and high toughness and ductility and its production
CN108350544B (en) Steel wire
JPH075992B2 (en) High-strength steel wire manufacturing method
JP3036393B2 (en) High strength and high toughness hot-dip galvanized steel wire and method for producing the same
CN115948697B (en) 500 MPa-level weather-resistant coating-free hot rolled rod wire and rolling process thereof
CN115896635B (en) Low-cost high-toughness weather-resistant hot rolled rod and wire and rolling process thereof
CN117165734A (en) Method for manufacturing galvanized steel strand

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
GR01 Patent grant
GR01 Patent grant