CN108165716A - A kind of online EDC water-baths toughening processing method of high intensity bridge cable zinc-coated wire gren rod - Google Patents
A kind of online EDC water-baths toughening processing method of high intensity bridge cable zinc-coated wire gren rod Download PDFInfo
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- CN108165716A CN108165716A CN201711491982.9A CN201711491982A CN108165716A CN 108165716 A CN108165716 A CN 108165716A CN 201711491982 A CN201711491982 A CN 201711491982A CN 108165716 A CN108165716 A CN 108165716A
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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
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/78—Combined heat-treatments not provided for above
-
- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/525—Heat 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Coating With Molten Metal (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Ropes Or Cables (AREA)
Abstract
The present invention relates to a kind of online EDC water-baths toughening processing methods of high intensity bridge cable zinc-coated wire gren rod, are through high-speed wire rolling by stocking, hot relaxation, then progress EDC water-baths toughening heat treatment+online heat collection are kept the temperature wire rod online after spinning；Thermal relaxation temperature is 820 DEG C 880 DEG C, and thermal relaxation time is 10s 60s；After line thermal relaxation by water-bath cooling, 93 DEG C 100 DEG C of bath temperature, the water-bath cooling time is 30s 90s to wire rod；Wire rod leaving water temperature after EDC water-bath coolings is controlled at 520 DEG C 600 DEG C；Hot collection is carried out after wire rod water outlet, it is 200 DEG C 400 DEG C that heat, which collects temperature, and it is 30min 2h that heat, which collects soaking time,.Suitable for producing the bridge cable zinc-coated wire wire rod of Φ 12.0mm Φ 16.0mm, wire rod specification limit is wider, wire rod diameter bigger, the bridge cable zinc-coated wire tensile strength >=1960MPa produced using the wire rod, number of torsions >=15 time, the cable zinc-coated wire of the performance have filled up domestic production blank.
Description
Technical field
The invention belongs to steel wire wire rod technical fields, and in particular to the water-bath toughening processing method of wire rod.
Background technology
Bridge cable zinc-coated wire is used to manufacture Longspan Bridge suspension cable main push-towing rope or suspension cable.For manufacturing the plating of the cable
Stringent to reversing index request while zinc steel wire meets high intensity, wire rod requires the best match for having intensity and toughness.
Domestic production at present generally uses the air-cooled works of online stelmor for manufacturing the wire rod of the type zinc-coated wire
Skill, since the technique is low to wire rod cooldown rate, tissue sorbite percentage 90% hereinafter, wire rod lead to circle tensile strength it is very poor
100MPa or so, the production specification upper limit can only achieve Φ 13.0mm, and the wire rod for meeting zinc-coated wire index request of production is also only
1860MPa ranks can be met, do not occur the wire rod production for 1960MPa ranks also in the market.
China Patent Publication No. CN 104624680A relate to a kind of production technology of offline EDC, before material enters EDC
It needs wire rod reheating austenitizing, for production, energy consumption is larger, and the finished product that is related to of the patent is into can make
For rope making steel wire, the production and application requirement of bridge cable zinc-coated wire can not be met.
Patent publication No. is that the patent of CN 102719643A is related to gren rod being quickly put into lead bath or salt bath
The sorbitizing of wire rod is carried out, wire rod cools down medium as lead liquid or saline solution, larger to equipment corrosion, there is certain dirt to environment
It is big to promote and apply difficulty for dye.
Invention content
The technical problems to be solved by the invention are to provide a kind of online EDC water of gren rod for the above-mentioned prior art
Toughening processing method is bathed, suitable for producing the bridge cable zinc-coated wire wire rod of Φ 12.0mm- Φ 16.0mm, wire rod specification model
Enclose wider, wire rod diameter bigger, the bridge cable zinc-coated wire tensile strength >=1960MPa produced using the wire rod, torsion
Number >=15 time, the cable zinc-coated wire of the performance have filled up domestic production blank.
Technical solution is used by the present invention solves the above problems：A kind of high intensity bridge cable zinc-coated wire hot rolling
The online EDC water-baths toughening processing method of wire rod is the wire rod hot relaxation online after spinning through high-speed wire rolling by stocking, then
It carries out EDC water-baths toughening heat treatment+online heat and collects heat preservation；Wherein, the online EDC toughenings heat treatment of wire rod is realized in：
Blank is rolled into the wire rod of specified diameter by high-speed rod-rolling mill, is produced by following technological parameter：
(1) wire rod laying temperature is set as 830 DEG C -900 DEG C；
(2) by online thermal relaxation after wire rod spinning, thermal relaxation temperature is 820 DEG C -880 DEG C, thermal relaxation time 10s-
60s；
(3) wire rod after line thermal relaxation by water-bath cooling, 93 DEG C -100 DEG C of bath temperature, the water-bath cooling time be 30s-
90s；
(4) wire rod leaving water temperature after EDC water-bath coolings is controlled at 520 DEG C -600 DEG C；
(5) hot collection is carried out after wire rod water outlet, it is 200 DEG C -400 DEG C that heat, which collects temperature, and heat collects soaking time and is
30min-2h。
Preferably, the enlarged-diameter of wire rod is Φ 12.0mm- Φ 16.0mm after rolling.
Preferably, the sorbite tissue content of obtained gren rod product is up to more than 95%, and tensile strength leads to circle
Very poor≤60MPa, and without bainite, martensite abnormal structure.
Preferably, obtained gren rod product by drawing, it is zinc-plated after, zinc-coated wire tensile strength >=1960MPa,
Reverse index >=15 time.
Preferably, in order to realize that cooling is uniform, the cooling medium of wire rod is mixed for water and RX media (halogenated hydrocarbons, such as bromoethane)
Close liquid, the water vapour that generates in cooling procedure it is environmentally safe on health without influence, meet the green of country's promotion
Color environment-protection production method.
Compared with prior art, the advantage of the invention is that：
(1) present invention is suitble to the wire rod diameter of production to be expanded to Φ 12.0mm- Φ 16.0mm, with existing production upper limit Φ
13.0mm is compared, and produces maximum specification bigger, and production specification range is wider.
(2) wire rod carries out online hot relaxation before water is entered.According to specification difference, thermal relaxation time 10s-60s carries out phase
The precipitation strength of carbide, nitride before change, and dislocation density is fully reduced, the tensile strength of steel wire after drawing is improved, is enabled
Enough meet bridge cable zinc-coated wire.
(3) 200 DEG C -400 DEG C of temperature range is collected in control after wire rod water outlet, and soaking time is controlled in 30min-2h.It plays
Online annealing eliminates the effect that can spread hydrogen in internal stress and fully release wire rod.
(4) the cooling medium of wire rod is water and RX medium mixing liquids, and the water vapour generated in cooling procedure is to environment
It is pollution-free on health without influence, meet the environmentally protective production method of country's promotion.
(5) sorbite tissue content is up to more than 95%, and tensile strength, which is led to, encloses very poor≤60MPa, and without bainite, geneva
Ti Deng abnormal structures.
(6) wire rod by drawing, it is zinc-plated after, zinc-coated wire tensile strength >=1960MPa, reverse index >=15 time.
Description of the drawings
Fig. 1 is that EDC water-baths toughening is heat-treated metallographic microstructure in the embodiment of the present invention 1；
Fig. 2 is that EDC water-baths toughening is heat-treated metallographic microstructure in the embodiment of the present invention 2.
Specific embodiment
EDC water-baths toughening heat treatment method of the present invention work is retouched in more detail below in conjunction with presently preferred embodiments of the present invention
It states.But the embodiment is only the description to better embodiment of the present invention, and cannot generate any restrictions to the scope of the present invention.
Embodiment 1
The high-speed wire factory production trade mark is SWRS87Mn, and specification is Φ 12.5mm, and wire rod passes through high-speed wire rolling established practice
It spins after set pattern lattice.EDC water-bath patents are carried out by following technological parameter：Wire rod laying temperature is 830 DEG C -900 DEG C；Wire rod
By online thermal relaxation after spinning, thermal relaxation temperature is 820 DEG C -880 DEG C, thermal relaxation time 10s-60s；The online heat of wire rod is relaxed
Behind Henan by water-bath cooling, 93 DEG C -100 DEG C of bath temperature, water-bath cooling time are 30s-90s；Wire rod passes through EDC water-bath coolings
Leaving water temperature is 520 DEG C -600 DEG C afterwards.
Control collects temperature at 200 DEG C -400 DEG C after wire rod water outlet, and soaking time is in 30min-2h.
Wire rod the tensile strength Rm >=1290MPa, contraction percentage of area Z produced through water-bath patent of the present invention >=
40%, lead to and enclose very poor≤60MPa, metallographic structure sorbite percentage >=95%.It is Φ 5.0mm by drawn steel wire specification, it is zinc-plated
Tensile strength of wire Rm >=1960MPa afterwards, zinc-plated rear steel wire torsion number >=15 time, belongs to a kind of high-tensile steel wires, can meet
The requirement of bridge cable zinc-coated wire.
Embodiment 2
The high-speed wire factory production trade mark is XC90LS, and specification is Φ 14.0mm, and wire rod passes through high-speed wire rolling into regulation
It spins after specification.EDC water-bath patents are carried out by following manufacturing parameter：Wire rod laying temperature is 840 DEG C -880 DEG C；Wire rod is spat
By online thermal relaxation after silk, thermal relaxation temperature is 860 DEG C, thermal relaxation time 20s；Wire rod passes through water-bath after line thermal relaxation
Cooling, 100 DEG C of bath temperature, water-bath cooling time are 70s；Wire rod leaving water temperature after EDC water-bath coolings is 550 DEG C.Disk
It is 300 DEG C that temperature is collected after item water outlet, soaking time 1h.
Wire rod the tensile strength Rm >=1350MPa, contraction percentage of area Z produced through water-bath patent of the present invention >=
35%, lead to and enclose very poor≤60MPa, metallographic structure sorbite percentage >=95%.It is Φ 6.2mm by drawn steel wire specification, it is zinc-plated
Tensile strength of wire Rm >=1960MPa afterwards, zinc-plated rear steel wire torsion number >=15 time.
Embodiment 3
For the wire rod that production specification is Φ 16.0mm, production technology is produced with embodiment 1 by water-bath patent
Wire rod tensile strength Rm >=1400MPa out, contraction percentage of area Z >=40% lead to and enclose very poor≤60MPa, metallographic structure Soxhlet
Body content >=95%.It is Φ 7.0mm by drawn steel wire specification, zinc-plated rear tensile strength of wire Rm >=1960MPa, zinc-plated rear steel
Silk number of torsions >=15 time.
Comparative example
The purpose of the application is to obtain a kind of wire rod of high intensity, gained tensile strength of wire Rm after drawing >=
1960MPa, the bridge cable zinc-coated wire production that can meet higher intensity are used.The application improve wire rod intensity key technology be
To the online EDC water-baths toughening of wire rod of spinning, online thermal relaxation especially is carried out to wire rod before water-bath toughening, thermal relaxation is water-bath
Premise, thermal relaxation are used to implement the precipitation strength of carbide, nitride before phase change, and fully reduce dislocation density, improve wire rod
Radial direction histological difference.By taking the wire rod specification that embodiment 1 produces as an example, in the case of without online thermal relaxation, experiment production
Wire rod tensile strength Rm >=1020MPa out, contraction percentage of area Z >=40% lead to and enclose very poor≤80MPa.By drawn steel wire
Specification is Φ 5.0mm, and zinc-plated rear tensile strength of wire Rm can not be used for 1480MPa. as high intensity bridge cable steel wire.
In addition to the implementation, it is all to use equivalent transformation or equivalent replacement the invention also includes there is an other embodiment
The technical solution that mode is formed should all be fallen within the scope of the hereto appended claims.
Claims (4)
1. a kind of online EDC water-baths toughening processing method of high intensity bridge cable zinc-coated wire gren rod, it is characterised in that：
It is through high-speed wire rolling by stocking, wire rod hot relaxation online, then carries out EDC water-baths toughening heat treatment+online heat after spinning
Collect heat preservation；Wherein, the online EDC toughenings heat treatment of wire rod is realized in：
Blank is rolled into the wire rod of specified diameter by high-speed rod-rolling mill, is produced by following technological parameter：
(1) wire rod laying temperature is set as 830 DEG C -900 DEG C；
(2) by online thermal relaxation after wire rod spinning, thermal relaxation temperature is 820 DEG C -880 DEG C, thermal relaxation time 10s-60s；
(3) wire rod after line thermal relaxation by water-bath cooling, 93 DEG C -100 DEG C of bath temperature, the water-bath cooling time be 30s-90s；
(4) wire rod leaving water temperature after EDC water-bath coolings is controlled at 520 DEG C -600 DEG C；
(5) hot collection is carried out after wire rod water outlet, it is 200 DEG C -400 DEG C that heat, which collects temperature, and it is 30min-2h that heat, which collects soaking time,.
2. the online EDC water-baths patent of high intensity bridge cable zinc-coated wire gren rod according to claim 1
Method, it is characterised in that：The enlarged-diameter of wire rod is Φ 12.0mm- Φ 16.0mm after rolling.
3. the online EDC water-baths patent of high intensity bridge cable zinc-coated wire gren rod according to claim 1
Method, it is characterised in that：The sorbite tissue content of obtained gren rod product is up to more than 95%, and tensile strength leads to circle
Very poor≤60MPa, and without bainite, martensite abnormal structure.
4. the online EDC water-baths patent of high intensity bridge cable zinc-coated wire gren rod according to claim 1
Method, it is characterised in that：Obtained gren rod product by drawing, it is zinc-plated after, zinc-coated wire tensile strength >=
1960MPa reverses index >=15 time.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711491982.9A CN108165716B (en) | 2017-12-30 | 2017-12-30 | A kind of online EDC water-bath toughening processing method of high intensity bridge cable zinc-coated wire gren rod |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711491982.9A CN108165716B (en) | 2017-12-30 | 2017-12-30 | A kind of online EDC water-bath toughening processing method of high intensity bridge cable zinc-coated wire gren rod |
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| CN108165716A true CN108165716A (en) | 2018-06-15 |
| CN108165716B CN108165716B (en) | 2019-07-19 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109402356A (en) * | 2018-11-09 | 2019-03-01 | 江阴兴澄合金材料有限公司 | The controlled rolling and cooling method of bearing steel wire rod carbide network control |
| CN109468530A (en) * | 2018-10-17 | 2019-03-15 | 江阴兴澄合金材料有限公司 | 2000MPa grades or more bridge cable zinc-coated wire gren rod and production method |
| CN113186388A (en) * | 2021-04-15 | 2021-07-30 | 鞍钢股份有限公司 | Controlled cooling method for ultrahigh-strength heat-treatment-free prestressed steel strand wire rod |
| CN114134399A (en) * | 2021-04-19 | 2022-03-04 | 江阴兴澄合金材料有限公司 | Energy-saving steel wire rod with high bainite content for high alloy tool and manufacturing method thereof |
| CN114369760A (en) * | 2022-01-07 | 2022-04-19 | 鞍钢股份有限公司 | Wire rod for stress corrosion resistant ultra-high strength steel strand and manufacturing method of steel strand |
| CN116145036A (en) * | 2023-02-10 | 2023-05-23 | 江阴兴澄合金材料有限公司 | Hot-rolled wire rod for 2100 MPa-grade or above bridge cable galvanized steel wire and production method thereof |
| CN116219290A (en) * | 2023-02-24 | 2023-06-06 | 鞍钢股份有限公司 | High-carbon steel wire for greenhouse clamp spring and manufacturing method thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109468530A (en) * | 2018-10-17 | 2019-03-15 | 江阴兴澄合金材料有限公司 | 2000MPa grades or more bridge cable zinc-coated wire gren rod and production method |
| CN109468530B (en) * | 2018-10-17 | 2021-04-06 | 江阴兴澄合金材料有限公司 | Hot-rolled wire rod for galvanized steel wire of bridge cable rope with over 2000MPa level and production method |
| CN109402356A (en) * | 2018-11-09 | 2019-03-01 | 江阴兴澄合金材料有限公司 | The controlled rolling and cooling method of bearing steel wire rod carbide network control |
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| CN113186388A (en) * | 2021-04-15 | 2021-07-30 | 鞍钢股份有限公司 | Controlled cooling method for ultrahigh-strength heat-treatment-free prestressed steel strand wire rod |
| CN114134399A (en) * | 2021-04-19 | 2022-03-04 | 江阴兴澄合金材料有限公司 | Energy-saving steel wire rod with high bainite content for high alloy tool and manufacturing method thereof |
| CN114369760A (en) * | 2022-01-07 | 2022-04-19 | 鞍钢股份有限公司 | Wire rod for stress corrosion resistant ultra-high strength steel strand and manufacturing method of steel strand |
| CN116145036A (en) * | 2023-02-10 | 2023-05-23 | 江阴兴澄合金材料有限公司 | Hot-rolled wire rod for 2100 MPa-grade or above bridge cable galvanized steel wire and production method thereof |
| CN116219290A (en) * | 2023-02-24 | 2023-06-06 | 鞍钢股份有限公司 | High-carbon steel wire for greenhouse clamp spring and manufacturing method thereof |
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