CN103008385B - Method for producing steel wire for steel core of ultrahigh-strength overhead cable by using 82B steel wire rod - Google Patents

Method for producing steel wire for steel core of ultrahigh-strength overhead cable by using 82B steel wire rod Download PDF

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Publication number
CN103008385B
CN103008385B CN201210542482.4A CN201210542482A CN103008385B CN 103008385 B CN103008385 B CN 103008385B CN 201210542482 A CN201210542482 A CN 201210542482A CN 103008385 B CN103008385 B CN 103008385B
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steel wire
wire
wire rod
steel
diameter
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CN201210542482.4A
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CN103008385A (en
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李建华
吴东明
张光新
詹学明
胡昕
周祖江
王惠琳
张俊华
陶维奇
阮琴
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武汉钢铁(集团)公司
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Abstract

The invention provides a method for producing a steel wire for a steel core of an ultrahigh-strength overhead cable by using an 82B steel wire rod. The method comprises the steps of selecting the steel wire rod with diameter less than or equal to 8 mm and initial anti-tension strength more than or equal to 1150 MPa; washing with acid and phosphating; drawing; and carrying out zinc plating for future use. According to the ultrahigh-strength zinc-plated steel wire with diameter of phi 1.60-2.60 mm, which is provided by adopting the ordinary 82B steel wire rod as a raw material, the steel wire rod has no need of being subjected to lead quenching treatment and is directly drawn, so that the pollution to environment can be reduced, thermal treatment processes of lead quenching and the like can be eliminated, and maintenance of the corresponding equipment can be reduced. Furthermore, under the condition of simple components, the anti-tension strength of the produced steel wire is at least 1900 MPa; the 1% extension stress is at least 1600 MPa; and the twist frequency is at least 20 times.

Description

By the method for 82B wire rod production superelevation strong aerial cable steel core steel wire

Technical field

The present invention relates to the production method of wire rod, belong to the method for a kind of 82B wire rod production superhigh intensity rank aerial cable carrying steel core steel wire particularly, it is applicable to produce the superhigh intensity rank aerial cable carrying steel core steel wire that diameter is φ 1.60-2.60mm.

Background technology

The specific performance index of superhigh intensity rank zinc-coated wire is: tensile strength >=1770MPa, 1% elongation stress >=1550MPa, percentage elongation >=2.5 %, number of torsions >=14, and zinc coat mass meets the A level of GB/T3428-2002.Superhigh intensity rank zinc-coated wire can make the superhigh intensity rank galvanized strand wires of 1 × 7,1 × 19 and 1 × 37 structure.

Along with possess energy-saving and environmental protection feature extra-high voltage, large span power transmission technology is increasingly mature and apply, more and more higher to the requirement of overhead power transmission cable carrying galvanized strand wires, GB GB/T3428-2002(is equal to IEC 60888) in the galvanized steel wire strength grade that comprises be difficult to meet the requirement manufacturing overlength, heavy in section steel-cored aluminium strand, be badly in need of the galvanized strand wires developing superhigh intensity rank.

Feature that superhigh intensity rank galvanized strand wires will possess simultaneously " three is high ", that is: stress and high torsion when high-tensile, high 1% extends, the difficult point of manufacture is how to ensure the requirement that 3 performance indications of product all can meet the specification simultaneously.

In general, the method improving drawn steel wire Strenth and stress has 3 kinds, and one is the total deformation increasing steel wire, but too high cold deformation can damage the toughness of steel wire, causes twisting property defective; Two is select initial strength more than the raw material of 1250MPa; Three is carry out drawing again after patenting process to 82B wire rod raw material, percentage composition is organized with the sorbite improving wire rod, reach the object improving wire rod initial strength and toughness, but this production method is owing to adding patenting operation, product per ton will increase process cost more than 800 yuan, also can cause certain pollution to environment simultaneously.

About the research adopted in wire rod production superhigh intensity zinc-coated wire, corresponding document and patent can be found both at home and abroad, these documents and patent can be divided into two classes: one, application is different from this patent, be mainly bridge cable zinc-coated wire, tensile strength has requirement, and stress and torsion do not explicitly call for or require lower when extending 1%, as: T Tarui " High Strength Galvanized Wire for Bridge Cables " (Materials Science Forum.2003, 426/432 (2): 829-834), " Wire rod for 2000 MPa galvanized wire and 2, 300 MPa PC strand " (NIPPON STEEL TECHNICAL REPORT.1999, (80) what describe Nippon Steel's exploitation: 44-49) decomposes carbonized bodies by spheroidising, microscopic structure is made to be that pearlitic texture can reduce drawing, the intensity of twist process lamination is 1770 ~ 1960 MPa galvanized strand wires and is applied to the outstanding stay cord of alum and Kurushima bridge, and bridge steel cable is used, tensile strength is the proprietary production technology of the galvanized wire of 2000 MPa, " ultrahigh-strength vanadium-titanium composite microalloyed high carbon steel wire rod and preparation method thereof " (Chinese patent. application number: 201110342720.2) describe husky steel steel research and adopt the high-carbon steel wire rod of vanadium titanium-combined microalloying explained hereafter to can be used for manufacturing tensile strength in the bridge cable galvanized strand wires of more than 1960MPa 15.2mm and tensile strength at 1860 more than MPa 7 mm zinc-coated wires, " a kind of 1860MPa level bridge cable zinc-coated wire wire rod and manufacture method thereof " (Chinese patent. application number: 201210132587.2), " a kind of 1770MPa level bridge stay cable zinc-coated wire wire rod and manufacture method thereof " (Chinese patent. application number: 200710093823.3), " high strength bridge stay cable and suspension cable zinc-coated wire wire rod and manufacture method " thereof (Chinese patent. application number: 200710045315.8), " a kind of method of the f5.0 of manufacture mm 1860 MPa superhigh intensity hot-dip galvanizing steel wire " (Chinese patent. application number: 201010179972) be production bridge cable zinc-coated wire wire rod and manufacture method thereof that Baosteel research institute declares.They are two years old, application is identical with this patent or close, but all adopt the Technology for Heating Processing such as salt bath or patenting, as: Yasuhiro Oki " Development of 200 kgf/mm2 Grade High-strength Zinc-galvanized Wire " is (R.1999, 49 (2): 8-11) describe Japan's employing in hypereutectoid steel, add Si and C alloy wire rod, through drawing, zinc-plated, the techniques such as heat treatment, produce zinc-plated after be organized as nanostructured, there is excellent ductility, toughness, fatigue resistance, delayed fracture rope, cable is with up to the zinc-plated twisted wire of 200 kgf/mm2 (1960 N/mm2) level, Chen Xianzhong " development of the zinc-plated rope making wire of obdurability Extra High Strength " (metallic article .2009, 35 (5): 11-13) describe Guizhou steel cable company choose Guizhou steel mill produce f8.0 mm82A wire rod be raw material, after being drawn to f6.20 mm semi-finished product, it is 880 ~ 920 DEG C in heating-up temperature, patenting temperature is 540 ~ 560 DEG C, take-up speed is prepare tensile strength under the condition of 7 ~ 11 m/min to reach 1365MPa, sorbite volume fraction is greater than 96 %, be drawn to f2.40mm, after electrogalvanizing, steel wire torsion value is 29.1 times, bending value is 16.1 times, tensile strength is 2209MPa, Zn-coat mass is the zinc-plated rope making wire of obdurability Extra High Strength of 243g/mm2, Feng Yueping " high-strength hot-dip zinc-coated steel strand wires manufactured experimently by 77MnA wire rod " (metallic article .2009, 35 (5): 19-21) describing Xinjiang eight steel adopts the 77MnA wire rod oneself produced to produce and surface treatment through raw material, drawing, degreasing, heat treatment, help plating, the operations such as galvanizing and strand system, wherein surface treatment adopts the pickling of normal temperature salt, phosphating process at medium temperature, drawing adopts less Reduction per draft, heat treatment temperature 715 ~ 730 DEG C, heat time about 124 s, take-up speed 8.5m/min, during galvanizing, zinc liquid temperature is 455 ~ 465 DEG C, zinc-plated time 12 S, during twisting, 7 steel wire despooling tensions unanimously should produce power telecommunication High Strength Steel twisted wire, " NIPPON STEEL CORP.HIGH TENSILE STRENGTH WIRE ROD FOR STEEL WIRE EXCELLENT IN TWISTING VALUE AND ITS PRODUCTION " (Japan.No.JP19980034580), " NIPPON STEEL CORP.HIGH STRENGTH HIGH TOUGHNESS HIGH CARBON STEEL WIRE ROD AND PROCESS FOR PRODUCING THE SAME " (Japan.No.EP20040705540), " NIPPON STEEL CORP.PRODUCTION OF HIGH STRENGTH GALVANIZED STEEL WIRE " (Japan.No.JP08296008), the wire rod that " NIPPON STEEL CORP.HIGH-STRENGTH WIRE ROD HAVING SUPERIOR ROD DRAWABILITY, MANUFACTURING METHOD THEREFOR, AND HIGH-STRENGTH STEEL WIRE HAVING SUPERIOR ROD DRAWABILITY " (Japan.No.JP20060179741) is nippon is produced and processing patented technology, all adopt the Technology for Heating Processing of salt bath or patenting or austenitizing again.

Summary of the invention

The object of patent of the present invention is the deficiency overcoming prior art existence, thering is provided a kind of adopts common 82B wire rod raw material to produce φ 1.60-2.60mm, without the need to through patenting process, direct drawing, make the tensile strength >=1900MPa of steel wire, 1% elongation stress >=1600MPa, the method for the superelevation strong aerial cable carrying steel core steel wire of number of torsions >=20 time.

Realize the measure of above-mentioned purpose:

By the method for 82B wire rod production superelevation strong aerial cable steel core steel wire, its step:

1) the 82B wire rod that diameter is no more than 8mm, initial tensile strength is not less than 1150MPa is selected;

2) carry out conventional pickling and phosphorating treatment, and make the phosphorization membrane on wire rod surface even;

3) drawing, it is 10 ~ 11 passages that drawing passes controls, and controls average percentage pass reduction 17 ~ 20%, and drawing speed is at 3 ~ 4m/S, and the Steel Wire Surface temperature after controlled cooling model is no more than 60 DEG C; In drawing, keep lubricant evenly to overlay on Steel Wire Surface; Average percentage pass reduction is according to following formulae discovery:

In formula: Qcp-represent average percentage pass reduction, unit is %;

D-expression steel wire diameter, unit is mm;

D-expression wire rod diameter, unit is mm;

N-expression drawing passes;

4) zinc-plated, and the speed of service v product value controlling steel wire diameter d and wire galvanization is at 90 ~ 110mmm/min; D-expression steel wire diameter, unit is mm; The speed of service of v-expression wire galvanization, unit is m/min;

5) stand-by.

The present invention compared with prior art, common 82B wire rod raw material is adopted to produce the superhigh intensity rank zinc-coated wire of φ 1.60-2.60mm, wire rod is without the need to through patenting process, direct drawing, decreases the pollution to environment, decreases the heat treatment steps such as patenting and corresponding plant maintenance work, and under the simple condition of composition, make the tensile strength of produced steel wire at least at 1900MPa, 1% elongation stress is at least at 1600MPa, and number of torsions is at least at 20 times.

Detailed description of the invention

Below the present invention is described in detail:

Embodiment 1:G4A 7/1.95(1 × 7-5.85mm) with the production of galvanized strand wires:

The composition of 82B used and weight percent content are C:0.82%, Si:0.22%, Mn:0.75%, S < 0.01%, P < 0.01%, and all the other are Fe and inevitable trace impurity; The diameter D of its wire rod is 5.5mm, and initial tensile strength is 1160MPa, and the contraction percentage of area is 32%, and grain size is 8 grades, and sorbite percentage is 90%, and steel wire diameter d is 1.95mm, and the speed of service v of wire galvanization is 46.2m/min, and pressure road frequency n is 11 times.

Its production stage:

1) select diameter to be 5.5mm, initial tensile strength is the 82B wire rod of 1160MPa;

2) carry out conventional pickling and phosphorating treatment, the phosphorization membrane on the wire rod surface after phosphorating treatment is even;

3) carry out drawing, drawing passes n is 11 times, the average reduction ratio of passage 17.2%, drawing speed at 3.8m/s, cooled Steel Wire Surface temperature 45-50 DEG C; In drawing, keep lubricant evenly to overlay on Steel Wire Surface; Average percentage pass reduction is according to following formulae discovery:

Be 1.95mm, D by d be respectively 5.5mm, n be, after substituting into for 11 times, obtain Qcp=17.2%;

4) carry out zinc-plated, the speed of service v product value of steel wire diameter d and wire galvanization is at 90mmm/min, and steel wire diameter d is 1.95mm, and the speed of service v of wire galvanization is 46.2m/min;

5) stand-by.

After testing, the tensile strength of its steel wire is 1908MPa, and 1% elongation stress is 1610MPa, percentage elongation 4.4%, and torsion is 26 times, and zinc coat mass is 238g/m 2.

Embodiment 2:G4A 7/2.10(1 × 7-6.30mm) with the production of galvanized strand wires:

The composition of 82B used and weight percent content are C:0.81%, Si:0.24%, Mn:0.78%, S < 0.01%, P < 0.01%, and all the other are Fe and inevitable trace impurity; The diameter D of its wire rod is 6.5mm, and initial tensile strength is 1160MPa, and the contraction percentage of area is 32%, and grain size is 8 grades, and sorbite percentage is 90%, and steel wire diameter d is 2.10mm, and the speed of service v of wire galvanization is 45m/min, and pressure road frequency n is 11 times.

Its production stage:

1) select diameter to be 6.5mm, initial tensile strength is the 82B wire rod of 1160MPa;

2) carry out conventional pickling and phosphorating treatment, the phosphorization membrane on the wire rod surface after phosphorating treatment is even;

3) carry out drawing, drawing passes n is 11 times, the average reduction ratio of passage 18.6%, drawing speed at 3.5m/s, cooled Steel Wire Surface temperature 45-50 DEG C; In drawing, keep lubricant evenly to overlay on Steel Wire Surface; Average percentage pass reduction is according to following formulae discovery:

Be 2.10mm, D by d be respectively 6.5mm, n be, after substituting into for 11 times, obtain Qcp=18.6%;

4) carry out zinc-plated, the speed of service v product value of steel wire diameter d and wire galvanization is at 95mmm/min, and steel wire diameter d is 2.10mm, and the speed of service v of wire galvanization is 45m/min;

5) stand-by.

After testing, the tensile strength of its steel wire is 1936MPa, and 1% elongation stress is 1647MPa, percentage elongation 4.0%, and torsion is 22 times, and zinc coat mass is 254g/m 2.

Embodiment 3:G4A 19/2.50(1 × 19-12.50mm) with the production of galvanized strand wires:

The composition of 82B used and weight percent content are C:0.81%, Si:0.25%, Mn:0.80%, S < 0.01%, P < 0.01%, and all the other are Fe and inevitable trace impurity; The diameter D of its wire rod is 8.0mm, and initial tensile strength is 1160MPa, and the contraction percentage of area is 32%, and grain size is 8 grades, and sorbite percentage is 90%, and steel wire diameter d is 2.50mm, and the speed of service v of wire galvanization is 44m/min, and pressure road frequency n is 11 times.

Its production stage:

1) select diameter to be 8.0mm, initial tensile strength is the 82B wire rod of 1160MPa;

2) carry out conventional pickling and phosphorating treatment, the phosphorization membrane on the wire rod surface after phosphorating treatment is even;

3) carry out drawing, drawing passes n is 11 times, the average reduction ratio of passage 19.1%, drawing speed at 3.2m/s, cooled Steel Wire Surface temperature 45-50 DEG C; In drawing, keep lubricant evenly to overlay on Steel Wire Surface; Average percentage pass reduction is according to following formulae discovery:

Be 2.50mm, D by d be respectively 8.0mm, n be, after substituting into for 11 times, obtain Qcp=19.1%;

4) carry out zinc-plated, the speed of service v product value of steel wire diameter d and wire galvanization is at 110mmm/min, and steel wire diameter d is 2.50mm, and the speed of service v of wire galvanization is 44m/min;

5) stand-by.

After testing, the tensile strength of its steel wire is 1955MPa, and 1% elongation stress is 1617MPa, percentage elongation 4.0%, and torsion is 29 times, and zinc coat mass is 244g/m 2.

Embodiment 4:G4A 37/2.86(1 × 37-20.02mm) with the production of galvanized strand wires:

The composition of 82B used and weight percent content are C:0.81%, Si:0.25%, Mn:0.80%, S < 0.01%, P < 0.01%, and all the other are Fe and inevitable trace impurity; The diameter D of its wire rod is 8.0mm, and initial tensile strength is 1160MPa, and the contraction percentage of area is 32%, and grain size is 8 grades, and sorbite percentage is 90%, and steel wire diameter d is 2.86mm, and the speed of service v of wire galvanization is 39m/min, and pressure road frequency n is 10 times.

Its production stage:

1) select diameter to be 8.0mm, initial tensile strength is the 82B wire rod of 1160MPa;

2) carry out conventional pickling and phosphorating treatment, the phosphorization membrane on the wire rod surface after phosphorating treatment is even;

3) carry out drawing, drawing passes n is 10 times, the average reduction ratio of passage 18.6%, drawing speed at 3.0m/s, cooled Steel Wire Surface temperature 45-50 DEG C; In drawing, keep lubricant evenly to overlay on Steel Wire Surface; Average percentage pass reduction is according to following formulae discovery:

Be 2.86mm, D by d be respectively 8.0mm, n be, after substituting into for 10 times, obtain Qcp=18.6%;

4) carry out zinc-plated, the speed of service v product value of steel wire diameter d and wire galvanization is at 110mmm/min, and steel wire diameter d is 2.86mm, and the speed of service v of wire galvanization is 38.4m/min;

5) stand-by.

After testing, the tensile strength of its steel wire is 1912MPa, and 1% elongation stress is 1623MPa, percentage elongation 4.8%, and torsion is 27 times, and zinc coat mass is 327g/m 2.

Above-described embodiment is only the best and exemplifies, and is not the restriction to embodiments of the present invention.

Claims (1)

1. by the method for 82B wire rod production superelevation strong aerial cable steel core steel wire, its step:
1) the 82B wire rod that diameter is no more than 8mm, initial tensile strength is not less than 1150MPa is selected;
2) carry out conventional pickling and phosphorating treatment, and make the phosphorization membrane on wire rod surface even;
3) drawing, it is 10 ~ 11 passages that drawing passes controls, and controls average percentage pass reduction 17 ~ 20%, and drawing speed is at 3 ~ 4m/S, and the Steel Wire Surface temperature after controlled cooling model is no more than 60 DEG C; In drawing, keep lubricant evenly to overlay on Steel Wire Surface; Average percentage pass reduction is according to following formulae discovery:
In formula: Qcp-represent average percentage pass reduction, unit is %;
D-expression steel wire diameter, unit is mm;
D-expression wire rod diameter, unit is mm;
N-expression drawing passes;
4) zinc-plated, and the speed of service v product value controlling steel wire diameter d and wire galvanization is at 90 ~ 110mmm/min; D-expression steel wire diameter, unit is mm; The speed of service of v-expression wire galvanization, unit is m/min;
5) stand-by.
CN201210542482.4A 2012-12-14 2012-12-14 Method for producing steel wire for steel core of ultrahigh-strength overhead cable by using 82B steel wire rod CN103008385B (en)

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KR101595937B1 (en) * 2014-10-07 2016-02-19 고려제강 주식회사 Method for manufacturing high-strength plating steel wire and strand to strengthen overhead transmission wire and a steel wire and strand manufactured using the same
CN104588435B (en) * 2014-12-28 2017-02-22 鞍钢钢绳有限责任公司 Production method of 2000MPa-level microalloying steel wire for producing ropes
CN104928956B (en) * 2015-06-16 2017-08-25 天津冶金钢线钢缆集团有限公司 The preparation method of high anti-corrosion Steel wire rope in fishery industry
CN105154949A (en) * 2015-10-14 2015-12-16 贵州钢绳股份有限公司 Production technology of high-strength and large-diameter electro-galvanized steel wires
CN105170669A (en) * 2015-10-26 2015-12-23 贵州钢绳股份有限公司 Drawing process of long-diameter high-carbon wire
CN108118324A (en) * 2017-12-18 2018-06-05 无锡科茂金属材料有限公司 Plate rare earth zinc steel strand wires middle temperature phosphating method
CN109604368A (en) * 2018-12-11 2019-04-12 天津冶金集团中兴盛达钢业有限公司 A kind of aerial condutor super extra-high strong zinc-coated wire and its manufacturing method

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