CN109622644A - A kind of compressor wire and its manufacturing method of small relaxation rate - Google Patents

A kind of compressor wire and its manufacturing method of small relaxation rate Download PDF

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Publication number
CN109622644A
CN109622644A CN201811511497.8A CN201811511497A CN109622644A CN 109622644 A CN109622644 A CN 109622644A CN 201811511497 A CN201811511497 A CN 201811511497A CN 109622644 A CN109622644 A CN 109622644A
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CN
China
Prior art keywords
wire
compressor
relaxation rate
manufacturing
wire rod
Prior art date
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Pending
Application number
CN201811511497.8A
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Chinese (zh)
Inventor
杨志强
蔺秀艳
李博
韩文铎
王鸿利
王正康
陈海祥
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TIANJIN METALLURGICAL GROUP FLOURISH STEEL INDUSTRIAL Co Ltd
Original Assignee
TIANJIN METALLURGICAL GROUP FLOURISH STEEL INDUSTRIAL Co Ltd
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Priority to CN201811511497.8A priority Critical patent/CN109622644A/en
Publication of CN109622644A publication Critical patent/CN109622644A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
    • B21C1/02Drawing metal wire or like flexible metallic material by drawing machines or apparatus in which the drawing action is effected by drums
    • B21C1/04Drawing metal wire or like flexible metallic material by drawing machines or apparatus in which the drawing action is effected by drums with two or more dies operating in series
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D6/00Heat treatment of ferrous alloys
    • C21D6/004Heat treatment of ferrous alloys containing Cr and Ni
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D6/00Heat treatment of ferrous alloys
    • C21D6/005Heat treatment of ferrous alloys containing Mn
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D6/00Heat treatment of ferrous alloys
    • C21D6/008Heat treatment of ferrous alloys containing Si
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D8/00Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/06Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
    • C21D8/065Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires of ferrous alloys
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D9/00Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/525Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length for wire, for rods
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/002Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/02Ferrous alloys, e.g. steel alloys containing silicon
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/04Ferrous alloys, e.g. steel alloys containing manganese
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/42Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/46Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium

Abstract

The invention belongs to steel wire production process fields, it is related to the compressor wire and its manufacturing method and its manufacturing method of a kind of small relaxation rate, the chemical component of the compressor wire are as follows: C:0.80-0.85%, Si:0.10-0.30%, Mn:0.60-0.90%, P :≤0.025%, S :≤0.025%, Ni :≤0.10%, Cr :≤0.35%, Cu :≤0.2%, V :≤0.15%, include the following steps: wire rod examination → pickling, phosphatization → inspection → drawing → semi-finished product inspection, test → stabilization processes → take-up → Cheng Pinjian, test;By formulating reasonable semi-finished dimensions, drawing process and stabilizing treatment technique, appropriate stabilization processes temperature is found simultaneously, reach φ 7.50mm compressor wire 1000 hours relaxation values most preferably, being examined relaxation rate is 0.93%, the requirement of relaxation rate≤2.5%.

Description

A kind of compressor wire and its manufacturing method of small relaxation rate
Technical field
The invention belongs to compressor wire production technology field, it is related to compressor wire and its manufacture of a kind of small relaxation rate Method.
Background technique
Compressor wire production line at present, generally by unwrapping wire board, distorted pattern and lubricating system, aligns wheel group, intermediate frequency furnace, The part such as cooling device, straining pulley, take-up forms.In the manufacturing process of compressor wire, the stabilization processes of steel wire Effect have important role for the underrelaxation performance of compressor wire itself.
A straining pulley is generally only existed in existing production line device therefor, therefore, because the limitation of this body structure of equipment Tensity size that can not be suffered during mid-frequency induction heating from main modulation steel wire, to make the stabilization processes effect of steel wire more It is good, preferable underrelaxation performance is obtained, it can only be by one pretension of formation between mould drawing resistance and tractive force, it is ensured that steel wire Apply an equivalent stretching force when passing through mid-frequency induction heating.
The stretching force of individual wheels equipment is that resistance suffered when passing through deforming moulds by steel wire generates.When steel wire is even It is drawn when speed operation, pull out force is equal to resistance, and resistance is numerically equal to stretching force again.Therefore, during its stabilization processes Adjusting for stretching force suffered by steel wire is really realized by adjusting drawing resistance in drawing process.From above point Analysis is it is found that during compressor wire stabilization processes, and the diameter matches of process wire and finished product steel wire are for finished product steel wire Relaxation value have important influence.
In addition to this, stabilization processes temperature is also to influence another principal element of compressor wire relaxation property, surely Determining processing can make to be reverted to natural lattice form by the lattice destroyed after cold drawing, and by the major part in steel wire Residual stress is eliminated, its elastic limit is improved, and keeps steel wire stress loss when being on active service under keeping tension for a long time smaller.Thus, In the case that other process conditions remain unchanged, appropriate stabilization processes temperature is only selected, steel wire can just obtain optimal Relaxation property and mechanical property.
In conclusion to obtain the compressor wire that a kind of relaxation rate is small and performance is stable, the present invention selects, partly from raw material The various aspects such as finished size design, stabilizing treatment technique parameter designing are started with, and determine the big specification compressor wire of φ 7.50mm The optimal process program of comprehensive performance has the relaxation property of the big specification low-relaxation prestressed steel wire of φ 7.50mm by a relatively large margin Raising.
Summary of the invention
It is an object of the invention to overcome the shortcoming of existing equipment technology, provide that a kind of Relaxation of prestressing rate is small and property φ 7.50mm compressor wire and its manufacturing method that can be stable.
The present invention solves its technical problem and adopts the following technical solutions to achieve:
A kind of compressor wire of the small relaxation rate of prestressing force, it is characterised in that:
The essential element mass fraction of wire rod used in the production compressor wire are as follows: C:0.80-0.85%, Si:0.10- 0.30%, Mn:0.60-0.90%, P :≤0.025%, S :≤0.025%, Ni :≤0.10%, Cr :≤0.35%, Cu :≤ 0.2%, V :≤0.15%, remaining is Fe and inevitable impurity element.
It is a further object of the present invention to provide a kind of manufacturing methods of the compressor wire of the small relaxation rate of prestressing force: including such as Lower step: wire rod examination → pickling, phosphatization → inspection → drawing → inspection of semifinished product, test → stabilization processes → take-up → at Product examine, test.
Moreover, the wire rod is checked and accepted in step, selection diameter is φ 12.5mm, 82B wire rod high-carbon wire rod;
Wire rod chemical component are as follows: C:0.80-0.85%, Si:0.10-0.30%, Mn:0.60-0.90%, P :≤ 0.025%, S :≤0.025%, Ni :≤0.10%, Cr :≤0.35%, Cu :≤0.2%, V :≤0.15%, remaining for Fe and Inevitable impurity element;The tensile strength of wire rod is 1115-1230MPa, the contraction percentage of area >=30.
Moreover, in the drawing step, steel wire φ 7.5mm is formed by the wire rod of diameter phi 12.5mm through six passage drawings. Semi-finished product φ 8.25mm bright steel wire, the diameter of process wire are produced through five passage drawings by φ 12.50mm wire rod first Deviation is -0.00 to+0.03mm;Then φ 7.50mm finished product prestressing force is produced using last a time Helical Mode compressive deformation Steel wire.During this, when the diameter ratio of process wire and finished product steel wire reaches 1.1, pulling capacity when stabilization processes is most Good, the stabilization processes effect of steel wire is preferably also.
Moreover, in the stabilization processes step, stabilization processes temperature (tolerance ± 3 between 370-390 DEG C DEG C) when, the relaxation rate of steel wire can be controlled in 1.5% hereinafter, and at 380 DEG C, relaxation in 1000 hours of φ 7.50mm steel wire Value reaches most preferably, is 0.93%.
The advantages and positive effects of the present invention are:
1, in the present invention, by repeated detection and test, the disk of corresponding chemical ingredient, mechanical property and metallographic structure is chosen Item can meet in this secondary design as raw material for the technique requirement of the manufacture production of φ 7.50mm compressor wire.
2, it in the present invention, is designed and has been adjusted using six passage drawing process, and to the diameter of process wire, Guarantee that band line is smooth, on the basis of fracture of wire frequency is acceptable, improve the compression deformation of semi-finished product in the prior art to finished product, And then pulling capacity is improved, optimize stretch-draw effect;In addition, having adjusted the diameter deviation of process wire in drawing procedure, making The scattered error and precision of process control further increase, and reduce influence of the dimensional discrepancy to technique implementation effect.
3, in the present invention, the temperature of stabilization processes is adjusted, by comparative experiments, is determined for compliance with technique requirement to examine Temperature range, and in the temperature range for meeting technique requirement, determine the optimal processing temperature of stabilization processes.
Specific embodiment
Below by specific embodiment, the invention will be further described, and it is not limit that following embodiment, which is descriptive, Qualitatively, this does not limit the scope of protection of the present invention.
A kind of φ 7.50mm compressor wire that the small performance of Relaxation of prestressing value is stable, innovation of the invention is, described Produce the essential element mass fraction of wire rod used in compressor wire are as follows: C:0.80-0.85%, Si:0.10-0.30%, Mn: 0.60-0.90%, P :≤0.025%, S :≤0.025%, Ni :≤0.10%, Cr :≤0.35%, Cu :≤0.2%, V :≤ 0.15%, remaining is Fe and inevitable impurity element.
According to GB/T5223-2014 standard requirements, the technical indicator of compressor wire is shown in Table 1.
The performance requirement of 1 7.50mm1570MPa grades of compressor wires of φ of table
It is best with the technical indicator and the relaxation property that meet table 1, as design requirement of the invention.
The present invention provides a kind of manufacturing method for the φ 7.50mm compressor wire that Relaxation of prestressing rate is small and performance is stable: Include the following steps: wire rod examination → pickling, phosphatization → inspection → drawing → inspection of semifinished product, test → stabilization processes → receipts Line → Cheng Pinjian, test.
The case where for the above material composition and mechanical property requirements, producing whole strengthen in conjunction with previous compressor wire is Number situation, and raw material supplied materials is combined to examine information, comprehensively considering, 82B/ φ 12.5mm wire rod produces φ 7.50mm compressor wire, Wire rod chemical component, mechanical property, microstructure examination the results are shown in Table 2 tables 3.
The chemical component inspection result of the selected raw material of table 2
The mechanics and metal lographic examination result of raw material selected by table 3
In the present embodiment, according to the corresponding inspection result of table 2 and table 3, the wire rod of respective batch meets raw material in the present invention Effect requirement.
The wire rod is checked and accepted in step, and selection diameter is φ 12.5mm, 82B wire rod high-carbon wire rod;
The mass fraction of essential element in wire rod are as follows: C:0.80-0.85%, Si:0.10-0.30%, Mn:0.60- 0.90%, P :≤0.025%, S :≤0.025%, Ni :≤0.10%, Cr :≤0.35%, Cu :≤0.2%, V :≤0.15%, Remaining is Fe and inevitable impurity element;The tensile strength of wire rod is 1115-1230MPa, the contraction percentage of area >=30%.
In the present embodiment, in the drawing step, steel wire φ 7.5mm is drawn by the wire rod of diameter phi 12.5mm through six passages Type is pulled into, the size for manufacturing process wire used in φ 7.50mm compressor wire is φ 8.25mm, process wire Diameter deviation is -0.00 to+0.03mm;
New drawing process design, is increased to 1.1 for the steel wire diameter of semi-finished product and finished product steel wire diameter ratio, reduces simultaneously The diameter deviation of process wire increases process control precision, reduces influence of the dimensional discrepancy to technique implementation effect.
In the present embodiment, the stabilization processes comparison scheme is as shown in table 4, and stabilization processes temperature is at 370-400 DEG C Between, tolerance ± 3 DEG C, straightening roll volume under pressure is 10mm.
4 steel wire stabilization treatment process parameter of table
For finished product inspection, test, determine φ 7.50mm compressor wire product at 370 DEG C, 380 DEG C, 390 DEG C and The indexs of correlation performances such as the corresponding mechanical property of 400 DEG C of four temperature spots, relaxation property, as shown in table 5 and table 6.
From the point of view of comprehensive mechanical property, φ 7.50mm compressor wire is all satisfied standard in the performance indicator of four temperature sections It is required that but from the point of view of number of bends between 370-390 DEG C, the bending property of steel wire is best, and toughness is preferable.
The mechanical property variation of 5 φ 7.50mm compressor wire of table at different temperatures
It according to GB/T5224-2014 standard, tests to the relaxation property of φ 7.50mm steel wire, to determine best relaxation The production technology scheme of corresponding steel wire, specific detection data are shown in Table 6 when performance.
The relaxation property of 6 φ 7.50mm compressor wire of table at different temperatures
As shown in Table 6, using a kind of φ 7.50mm compressor wire that the small performance of Relaxation of prestressing value is stable of the invention Manufacturing method in 380 DEG C be preferred stabilization processes temperature.

Claims (5)

1. a kind of compressor wire of small relaxation rate, it is characterised in that: the weight percent of the compressor wire chemistry at It is divided into: C:0.80-0.85%, Si:0.10-0.30%, Mn:0.60-0.90%, P :≤0.025%, S :≤0.025%, Ni: ≤ 0.10%, Cr :≤0.35%, Cu :≤0.2%, V :≤0.15%, remaining is Fe and inevitable impurity element.
2. a kind of manufacturing method of the compressor wire of small relaxation rate according to claim 1, it is characterised in that: including such as Lower step: wire rod examination → pickling, phosphatization → inspection → drawing → semi-finished product inspection, test → stabilization processes → take-up → finished product Inspection, test.
3. a kind of manufacturing method of the compressor wire of small relaxation rate according to claim 2, it is characterised in that: the disk Item is checked and accepted in step, and selection diameter is φ 12.5mm, 82B wire rod high-carbon wire rod;
Wire rod chemical component are as follows: C:0.80-0.85%, Si:0.10-0.30%, Mn:0.60-0.90%, P :≤0.025%, S: ≤ 0.025%, Ni :≤0.10%, Cr :≤0.35%, Cu :≤0.2%, V :≤0.15%, remaining is for Fe and inevitably Impurity element;The tensile strength of wire rod is 1115-1230MPa, the contraction percentage of area >=30.
4. a kind of manufacturing method of the compressor wire of small relaxation rate according to claim 2, it is characterised in that: the drawing It takes a step in suddenly, steel wire φ 7.5mm is formed by the wire rod of diameter phi 12.5mm through six passage drawings, manufactures φ 7.50mm prestressing force The size of process wire used in steel wire is φ 8.25mm, and the diameter deviation of process wire is -0.00 to+0.03mm; When the diameter ratio of process wire and finished product steel wire reaches 1.1, pulling capacity when stabilization processes is best, the stabilisation of steel wire Treatment effect is preferably also.
5. a kind of manufacturing method of the compressor wire of small relaxation rate according to claim 2, it is characterised in that: described steady Surely change in processing step, stabilization processes temperature relaxation value between 370-390 DEG C is relatively small, relaxing effect at 380 ± 3 DEG C Most preferably, relaxation rate 0.93%.
CN201811511497.8A 2018-12-11 2018-12-11 A kind of compressor wire and its manufacturing method of small relaxation rate Pending CN109622644A (en)

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Cited By (5)

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CN112853782A (en) * 2020-12-23 2021-05-28 天津市新天钢中兴盛达有限公司 High-strength high-elongation prestressed steel strand and manufacturing method thereof
CN113026402A (en) * 2020-12-23 2021-06-25 天津市新天钢中兴盛达有限公司 Large-sized hot-dip galvanized prestressed steel strand and manufacturing method thereof
CN114350913A (en) * 2021-12-27 2022-04-15 江苏省沙钢钢铁研究院有限公司 Steel strand stabilizing treatment process and treated steel strand
CN114574679A (en) * 2022-03-31 2022-06-03 建龙北满特殊钢有限责任公司 Carbon steel hard wire rod for steel wire rope and manufacturing method thereof
CN114606448A (en) * 2022-03-24 2022-06-10 首钢水城钢铁(集团)有限责任公司 Wire rod for prestressed concrete spiral rib steel wire and production method thereof

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112853782A (en) * 2020-12-23 2021-05-28 天津市新天钢中兴盛达有限公司 High-strength high-elongation prestressed steel strand and manufacturing method thereof
CN113026402A (en) * 2020-12-23 2021-06-25 天津市新天钢中兴盛达有限公司 Large-sized hot-dip galvanized prestressed steel strand and manufacturing method thereof
CN113026402B (en) * 2020-12-23 2022-10-11 天津市新天钢中兴盛达有限公司 Large-sized hot-dip galvanized prestressed steel strand and manufacturing method thereof
CN114350913A (en) * 2021-12-27 2022-04-15 江苏省沙钢钢铁研究院有限公司 Steel strand stabilizing treatment process and treated steel strand
CN114606448A (en) * 2022-03-24 2022-06-10 首钢水城钢铁(集团)有限责任公司 Wire rod for prestressed concrete spiral rib steel wire and production method thereof
CN114574679A (en) * 2022-03-31 2022-06-03 建龙北满特殊钢有限责任公司 Carbon steel hard wire rod for steel wire rope and manufacturing method thereof
CN114574679B (en) * 2022-03-31 2023-10-24 建龙北满特殊钢有限责任公司 Carbon steel hard wire rod for steel wire rope and manufacturing method thereof

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