CN105803176B - A kind of method for improving bridge cable zinc-coated wire twisting property - Google Patents

A kind of method for improving bridge cable zinc-coated wire twisting property Download PDF

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Publication number
CN105803176B
CN105803176B CN201610151358.3A CN201610151358A CN105803176B CN 105803176 B CN105803176 B CN 105803176B CN 201610151358 A CN201610151358 A CN 201610151358A CN 105803176 B CN105803176 B CN 105803176B
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Prior art keywords
zinc
coated wire
bridge cable
steel wire
twisting property
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CN201610151358.3A
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CN105803176A (en
Inventor
方峰
周立初
季培蓓
王凌烽
陈华青
蒋建清
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Southeast University
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Southeast University
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    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/04—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of bars or wire
    • B21C37/042—Manufacture of coated wire or bars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/04—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of bars or wire
    • B21C37/045—Manufacture of wire or bars with particular section or properties
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
    • C23C2/06—Zinc or cadmium or alloys based thereon
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/34—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
    • C23C2/36—Elongated material
    • C23C2/38—Wires; Tubes

Abstract

The invention discloses a kind of method for improving bridge cable zinc-coated wire twisting property, high-carbon pearlite wire rod is selected, progress pickling, phosphatization, cold drawing, zinc-plated, stabilization processes obtain finished product zinc-coated wire successively；Intensity of steel wire is enclosed in 1850MPa~2050MPa, the torsional fracture number of turns >=20 after drawing；To zinc-plated again after steel wire progress lonneal processing after cold drawing, lonneal treatment temperature is 200 DEG C~260 DEG C, and the time is 24h~48h.Have the advantages that easy to operate, performance is stablized.

Description

A kind of method for improving bridge cable zinc-coated wire twisting property
Technical field
The present invention relates to a kind of method for improving bridge cable zinc-coated wire twisting property, belong to metal product field.
Background technology
High-strength galvanized steel wire is widely used in bridge because it is with excellent mechanical property and good anti-corrosion ability The important events such as cable, suspension cable.High-strength galvanized steel wire is using high-carbon pearlitic steel wire rod as raw material, and it is continuous to first pass through multi-pass Cold drawing deformation obtains extra-high strength wire, then carries out galvanizing by dipping processing again, steel wire surface obtain it is continuous, be well combined Hot galvanized layer, so as to obtain good corrosion resistance.
Since Mechanism of High Strength Pearlite Steel Wire is through large deformation amount plastic deformation, it is internal in the presence of higher deformation storage energy (master Will the presence in the form of residual stress, high density dislocation etc.), it is extremely sensitive to heating process.(the plating in the hot galvanizing process of steel wire For zinc temperature generally at 440 DEG C~460 DEG C, the time is 20 seconds~40 seconds), the residual stress of high-tensile steel wires, dislocation etc. will be sent out A series of raw changes.Since steel wire surface directly contacts 450 DEG C or so liquid Zns, and inside needs to can be only achieved through heat transfer Same temperature, since the zinc-plated time is short, frequently results in steel wire surface and the internal heating process undergone is inconsistent, cause originally More uniform residual stress can become skewness, and macro manifestations drastically reduce for steel wire torsion performance.
At present, the bridge cable high-strength galvanized steel wire produced using domestic high-carbon steel wire rod, it is impossible to meet that standard will The index asked is mainly the torsion number of turns of hot-dip galvanizing steel wire (standard sample, length 100d, d- steel wire diameter) less than 14 circles (one As 3~11 enclose), and high-tensile steel wires it is zinc-plated before the torsion number of turns be generally attained by more than 25 circles.Bridge cable is with high-strength Spending the torsion index of zinc-coated wire becomes the key factor for limiting domestic high-carbon steel wire rod large-scale application.
The content of the invention
The present invention reverses the problem of number of turns is low for high-strength galvanized steel wire, there is provided one kind improves bridge cable with zinc-plated The method of steel wire torsion performance, has the advantages that easy to operate, performance is stablized.
The invention discloses a kind of method for improving bridge cable zinc-coated wire twisting property, high-carbon pearly-lustre body disc is selected Bar, carries out pickling, phosphatization, cold drawing, zinc-plated, stabilization processes obtain finished product zinc-coated wire successively,；Intensity of steel wire exists after drawing 1850MPa~2050MPa, the torsional fracture number of turns >=20 are enclosed；It is low to zinc-plated again after steel wire progress lonneal processing after cold drawing Warm temper temperature is 200 DEG C~260 DEG C, and the time is 24h~48h.
The high-carbon steel pearlite wire rod is free of surface defects, and metallographic structure sorbite rate more than 90%, wire rod intensity exists Between 1200MPa~1350MPa.
The lonneal uses hot wind or high pressure steam heating when handling.
Zinc-plated temperature is 440 DEG C~460 DEG C, and the zinc-plated time is 20s~40s.
Stabilization processes, using heating in medium frequency, 380 DEG C of temperature selected as, the time is 20s~30s.
The bridge cable zinc-coated wire of 1770MPa~1960MPa levels of finished product zinc-coated wire 5~Ф of Ф 7mm, Reverse the number of turns >=14.
Beneficial effect：
1) technique is produced suitable for the bridge cable of 1770MPa~1960MPa levels of 5~Ф of Ф 7mm with zinc-coated wire. Domestic high-quality high-carbon steel wire rod can be selected in original wire rod；Compared with the prior art, technique change is small.
2) twisting property is stablized：It is excessive using the technology of the present invention as long as reversing the number of turns >=20 before cold drawing wire galvanization to enclose After lonneal processing being carried out before intensity wire galvanization, it is ensured that the torsion number of turns of high-strength galvanized steel wire >=14 are enclosed.
3) heat treatment process is easily realized：Hot wind or high pressure steam heating, heating requirements are low, and energy consumption is low.
Embodiment：
Different sizes, performance requirement bridge cable zinc-coated wire production, specific implementation example it is as follows：
One kind, which improves bridge cable high-strength galvanized steel wire and reverses, refers to calibration method, and concrete technology flow process is：High-carbon pearl At body of light wire rod → surface treatment → multi-pass cold drawing → residual stress homogenization heat treatment → galvanizing by dipping → stabilisation heat Reason → winding, packing.
A kind of method for improving bridge cable zinc-coated wire twisting property, concrete technical scheme are as follows：
1) the high-carbon pearlite wire rod of selection component, tissue, mechanical property composite demand, wire rod is free of surface defects, metallographic Sorbite rate more than 90% is organized, wire rod intensity is between 1200MPa~1350MPa.
2) after the oxide skin that pickling etc. removes surface being carried out to wire rod, then surface granosealing is carried out.
3) multi-pass continuous drawing is carried out, carrying out suitable passage according to the size of end product steel wire, intensity requirement sets Meter.For intensity of steel wire in 1850MPa~2050MPa, the torsional fracture number of turns is more than 20 circles after drawing.
4) lonneal processing is carried out to steel wire, temperature is 200 DEG C~260 DEG C, and heat treatment time is 24h~48h, can be adopted With hot wind or high pressure steam heating.
5) galvanizing by dipping is carried out to steel wire；Zinc-plated temperature is 440 DEG C~460 DEG C, and the zinc-plated time is 20s~40s.
6) stabilization processes, using heating in medium frequency, 380 DEG C of temperature selected as, the time is 20s~30s.
7) winding packing.
Embodiment 1
The production of 1960MPa grades of bridge cables of Ф 7mm zinc plating steel wire
1) the domestic high-carbon steel wire rod components of diameter 14mm (C 0.93%, Si0.88%, Mn 0.20%, surplus Fe), Soxhlet Body rate 90%, wire rod intensity are 1320MPa.
2) after the oxide skin that pickling etc. removes surface being carried out to wire rod, then surface granosealing is carried out.
3) 9 passage continuous drawings are carried out, produce the steel wire of a diameter of Ф 7mm, intensity 2040MPa, reversing the number of turns is 22 circles.
4) lonneal processing carries out steel wire using hot wind, temperature is 260 DEG C, heat treatment time 48h.
5) galvanizing by dipping is carried out to steel wire；Zinc-plated temperature is 450 DEG C, and the zinc-plated time is 40s.
6) stabilization processes, using heating in medium frequency, 380 DEG C of temperature selected as, time 25s.
7) strength of galvanized wire made of is 1965MPa, reverses the number of turns 14 and encloses.Meet 1960MPa grades of bridge cable platings The requirement of zinc steel wire.
Embodiment 2
The production of 1860MPa grades of bridge cables of Ф 5mm zinc plating steel wire：
1) the domestic high-carbon steel wire rod components of diameter 13mm (C 0.84%, Si 0.39%, Mn 0.60%, surplus Fe), Sorbite rate 90%, wire rod intensity are 1260MPa.
2) after the oxide skin that pickling etc. removes surface being carried out to wire rod, then surface granosealing is carried out.
3) 9 passage continuous drawings are carried out, produce the steel wire of a diameter of Ф 5mm, intensity 1940MPa, reversing the number of turns is 24 circles.
4) lonneal processing carries out steel wire using hot wind, temperature is 200 DEG C, heat treatment time 36h.
5) galvanizing by dipping is carried out to steel wire；Zinc-plated temperature is 440 DEG C, and the zinc-plated time is 30s.
6) stabilization processes, using heating in medium frequency, 380 DEG C of temperature selected as, time 20s.
7) strength of galvanized wire made of is 1875MPa, reverses the number of turns 15 and encloses.Meet 1860MPa grades of bridge cable platings The requirement of zinc steel wire.
Embodiment 3
The production of 1770MPa grades of bridge cables of Ф 5mm zinc plating steel wire：
1) diameter 12.5mm domestic high-carbon steel wire rod component (C 0.82%, Si 0.30%, Mn 0.60%, Cr 0.19%, surplus Fe), sorbite rate 90%, wire rod intensity is 1220MPa.
2) after the oxide skin that pickling etc. removes surface being carried out to wire rod, then surface granosealing is carried out.
3) 9 passage continuous drawings are carried out, produce the steel wire of a diameter of Ф 5mm, intensity 1850MPa, reversing the number of turns is 25 circles.
4) lonneal processing carries out steel wire using hot wind, temperature is 200 DEG C, heat treatment time 24h.
5) galvanizing by dipping is carried out to steel wire；Zinc-plated temperature is 460 DEG C, and the zinc-plated time is 20s.
6) stabilization processes, using heating in medium frequency, 380 DEG C of temperature selected as, time 30s.
7) strength of galvanized wire made of is 1785MPa, reverses the number of turns 18 and encloses.Meet 1770MPa grades of bridge cable platings The requirement of zinc steel wire.
Embodiment 4
The production of 1770MPa grades of bridge cables of Ф 7mm zinc plating steel wire：
1) diameter 13.5mm domestic high-carbon steel wire rod component (C 0.83%, Si 0.35%, Mn 0.62%, Cr 0.19%, surplus Fe), sorbite rate 90%, wire rod intensity is 1250MPa.
2) after the oxide skin that pickling etc. removes surface being carried out to wire rod, then surface granosealing is carried out.
3) 9 passage continuous drawings are carried out, produce the steel wire of a diameter of Ф 7mm, intensity 1870MPa, reversing the number of turns is 22 circles.
4) lonneal processing is carried out to steel wire with high steam, temperature is 200 DEG C, heat treatment time 24h.
5) galvanizing by dipping is carried out to steel wire；Zinc-plated temperature is 440 DEG C, and the zinc-plated time is 40s.
6) stabilization processes, using heating in medium frequency, 380 DEG C of temperature selected as, time 30s.
7) strength of galvanized wire made of is 1790MPa, reverses the number of turns 15 and encloses.Meet 1770MPa grades of bridge cable platings The requirement of zinc steel wire.

Claims (6)

1. a kind of method for improving bridge cable zinc-coated wire twisting property, selects high-carbon pearlite wire rod, acid is carried out successively Wash, phosphatization, cold drawing, zinc-plated, stabilization processes obtain finished product zinc-coated wire, it is characterised in that intensity of steel wire exists after drawing 1850MPa~2050MPa, the torsional fracture number of turns >=20 are enclosed；It is low to zinc-plated again after steel wire progress lonneal processing after cold drawing Warm temper temperature is 200 DEG C~260 DEG C, and the time is 24h~48h.
2. the method for bridge cable zinc-coated wire twisting property is improved as claimed in claim 1, it is characterised in that described High-carbon steel pearlite wire rod is free of surface defects, metallographic structure sorbite rate more than 90%, wire rod intensity 1200MPa~ Between 1350MPa.
3. the method for bridge cable zinc-coated wire twisting property is improved as claimed in claim 1, it is characterised in that described Hot wind or high pressure steam heating are used during lonneal processing.
4. the method for bridge cable zinc-coated wire twisting property is improved as claimed in claim 1, it is characterised in that zinc-plated temperature Spend for 440 DEG C~460 DEG C, the zinc-plated time is 20s~40s.
5. the method for bridge cable zinc-coated wire twisting property is improved as claimed in claim 1, it is characterised in that stabilize Processing, using heating in medium frequency, 380 DEG C of temperature selected as, the time is 20s~30s.
6. the method for bridge cable zinc-coated wire twisting property is improved as claimed in claim 1, it is characterised in that described The bridge cable zinc-coated wire of 1770MPa~1960MPa levels of finished product zinc-coated wire 5~Ф of Ф 7mm, reverses the number of turns >=14.
CN201610151358.3A 2016-03-16 2016-03-16 A kind of method for improving bridge cable zinc-coated wire twisting property Active CN105803176B (en)

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CN108165716B (en) * 2017-12-30 2019-07-19 江阴兴澄合金材料有限公司 A kind of online EDC water-bath toughening processing method of high intensity bridge cable zinc-coated wire gren rod
CN108380678B (en) * 2018-04-17 2020-01-17 东南大学 Production method of high-carbon steel wire
CN109174997A (en) * 2018-08-14 2019-01-11 武汉钢铁有限公司 A kind of production method that can improve Rm >=1860MPa bridge cable coating wire
CN109055679B (en) * 2018-09-03 2019-12-03 武汉钢铁有限公司 High-intensitive high torsion bridge rope zinc-coated wire and its preparation process
CN109604368B (en) * 2018-12-11 2021-06-08 天津市新天钢中兴盛达有限公司 Super-high-strength galvanized steel wire for overhead conductor and manufacturing method thereof
CN111872151A (en) * 2020-07-08 2020-11-03 鞍钢股份有限公司 Method for inhibiting reduction of torsion performance of high-strength galvanized steel wire after plating
CN112246901B (en) * 2020-09-17 2022-09-27 武汉钢铁有限公司 Production method of high-torsion coating steel wire for cable
CN114672752A (en) * 2022-05-30 2022-06-28 山西建龙实业有限公司 Method for improving weld quality of high-strength welded pipe for disc-buckle type scaffold

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JPH0755331B2 (en) * 1991-11-19 1995-06-14 修司 西浦 Ultra-high strength ultra-thin high-carbon steel wire manufacturing method
JP3997867B2 (en) * 2002-09-04 2007-10-24 住友金属工業株式会社 Steel wire, method for producing the same, and method for producing steel wire using the steel wire
CN100534657C (en) * 2007-06-26 2009-09-02 宝钢集团上海二钢有限公司 Method for preparing phi7.0mm1770MPa high-strength low-relaxation zinc-coated wire
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