CN107138524A - A kind of minimum specification cord steel wire craft arrangement and preparation method - Google Patents
A kind of minimum specification cord steel wire craft arrangement and preparation method Download PDFInfo
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- CN107138524A CN107138524A CN201710557215.7A CN201710557215A CN107138524A CN 107138524 A CN107138524 A CN 107138524A CN 201710557215 A CN201710557215 A CN 201710557215A CN 107138524 A CN107138524 A CN 107138524A
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- minimum specification
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- cord steel
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/16—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section
- B21B1/18—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section in a continuous process
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0203—Cooling
- B21B45/0209—Cooling devices, e.g. using gaseous coolants
- B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
- B21B45/0224—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for wire, rods, rounds, bars
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2261/00—Product parameters
- B21B2261/02—Transverse dimensions
- B21B2261/08—Diameter
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
Connect cord steel wire craft arrangement and preparation method, including high-speed wire production line the present invention relates to a kind of minimum specification, in addition to be arranged on the minimum specification rolling line after high-speed wire production line, the minimum specification rolling line includes multi-roll mill unit.After collection retracting collection, then cord steel temperature carries out minimum specification continuous rolling at 400 DEG C~600 DEG C, rolls 10~20 passages.The present invention provides a kind of minimum specification cord steel wire rod preparation method and technology arrangement, the minimum specification cord steels of Φ 4.5mm~Φ 1.6mm can be produced, effectively fault rate in reduction wire production, is greatly reduced the consumption such as manpower, machinery, equipment of follow-up drawing procedure, saves production cost.
Description
Technical field
The invention belongs to steel smelting wire production technical field, be related to a kind of minimum specification cord steel wire craft arrangement and
Preparation method.
Background technology
Cord steel is mainly used in making automobile tire meridian, is one of larger steel grade of production difficulty in wire product,
With the fast development of automobile industry, the demand of tire cord steel is increasingly vigorous.The main specifications of high line production domestic at present
For Ф 5.0mm~Ф 25.0mm, subsequent wire-rod roll need to be drawn to Φ 0.15mm~Φ 0.38mm using drawing procedure, with Φ
Exemplified by 5.5mm wire rods, drawing procedure is typically as follows：1) Φ 3.0mm~Φ 3.5mm just are drawn to；2) 980 DEG C~1050 DEG C Ovshinskies
Body, patenting；3) Φ 0.8mm~Φ 1.6mm are drawn in the middle of；4) 980 DEG C~1050 DEG C austenitizings, patenting；
5) electroplate；6) wet drawing is to Φ 0.15mm~Φ 0.38mm；7) twist with the fingers and twist, plying.Face lapse rate is up to 99.9% in drawing process,
Elongation is up to more than 1600 times, in whole drawing process, and process is numerous and diverse, it is necessary to through repeatedly heat treatment, cause manpower, machinery, set
The standby consumption waited, based on downstream user demand, Wire Rod Steel for Curtain String Purpose original size is smaller, and the difficulty of processing of user is just smaller, therefore
Small dimension Wire Rod Steel for Curtain String Purpose has the vigorous market demand.But the minimum gauge that high-speed wire production line is produced at present is only
Φ 4.5mm, most of producer can produce Φ 5.5mm, and the production line for subtracting sizing equipped with wire rod can produce Φ 5.0mm,
And production specification is smaller, yield is lower, and rolling line fault rate is higher.
It is high in order to solve existing high-speed wire production line production small dimension cord steel fault rate, it is impossible to produce minimum specification
The problems such as (Φ 4.5mm~Φ 1.6mm) cord steel, the present invention provides a kind of minimum specification cord steel wire rod preparation method and technology
Arrangement, can produce the minimum specification cord steels of Φ 4.5mm~Φ 1.6mm, effectively fault rate in reduction wire production, after being greatly reduced
The consumption such as manpower, machinery, the equipment of continuous drawing procedure, save production cost, and energy-conserving and environment-protective improve Business Economic Benefit and competition
Power.
The content of the invention
In view of this, it is an object of the invention to provide a kind of minimum specification cord steel wire craft arrangement and preparation side
Method.
To reach above-mentioned purpose, the present invention provides following technical scheme：
A kind of minimum specification cord steel wire craft arrangement, including high-speed wire production line, in addition to it is arranged on high-speed line
Minimum specification rolling line after material production line, the minimum specification rolling line includes multi-roll mill unit.
Further, the high-speed wire production line includes the heating furnace, frame roughing mills, milling train in frame set gradually
Group, frame pre-finishing mill group, pre- finish rolling rear water box, frame mm finishing mill unit, finish rolling rear water box, pinch roll and Laying head, steyr
Rub air-cooled line, collection volume station.
Further, it is provided with after the finish rolling rear water box and subtracts apparatus for fixed diameter rolling and subtract sizing rear water box.
Further, the minimum specification rolling line also includes being arranged on cord steel crop end and receipts after milling train unit
Acquisition means.
Further, the milling train unit is duo mill or three-high mill or four-high mill.
A kind of minimum specification cord steel wire rod preparation method, production process includes, heating steel billet, roughing, in roll, pre- essence
Roll, water cooling, spinning, air-cooled stelmor, collection retracting collection, uncoiling, continuous warm-rolling or cold rolling after water cooling, finish rolling, finish rolling before finish rolling.
Further, it is additionally included in after finish rolling water cooling and carries out subtracting fixed diameter rolling and subtract sizing water cooling.
Further, after collection retracting collection, then cord steel temperature carries out minimum specification and continuously rolls at 400 DEG C~600 DEG C
System, rolls 10~20 passages, single pass compression ratio 1.01~1.40, mill speed 0.1m/s~30m/s.
Further, during minimum specification continuous rolling, rolling temperature is 20 DEG C~600 DEG C.
Further, heating steel billet uses heat stepwise, including preheating section, bringing-up section and soaking zone.
The beneficial effects of the present invention are：Such a minimum specification cord steel wire craft arrangement and preparation method, can be produced
The minimum specification cord steels of Φ 4.5mm~Φ 1.6mm, wire rod precision is high, and the manpower of follow-up drawing procedure, machinery is greatly reduced, sets
It is standby to wait consumption, the fault in production of high-speed wire mill process is effectively reduced, operating rate is improved, downstream drawing and Re Chu is significantly saved
The production cost of science and engineering sequence, using wire rod Heat Treatment mode, comprehensive energy consumption reduction about 30%, energy-conserving and environment-protective improve enterprise's warp
Benefit of helping and competitiveness.
Brief description of the drawings
In order that the purpose of the present invention, technical scheme and beneficial effect are clearer, the present invention provides drawings described below and carried out
Explanation：
Fig. 1 is the process layout of minimum specification cord steel wire rod first embodiment of the invention；
Fig. 2 is the process layout of minimum specification cord steel wire rod second embodiment of the invention；
Fig. 3 and Fig. 4 is minimum specification cord steel duo mill pass schematic diagram；
Fig. 5 is minimum specification cord steel duo mill；
Fig. 6 is minimum specification cord steel three-high mill pass schematic diagram；
Fig. 7 is minimum specification cord steel four-high mill pass schematic diagram；
Fig. 8 is minimum specification cord steel three-high mill；
Fig. 9 is minimum, and roll mandrel is operated alone in specification cord steel four-high mill motor；
The minimum specification cord steel four-high mill up-down rollers of Figure 10 and left and right roller centralized driving roll mandrel；
Figure 11 is the dynamic continuous cooling transformation (CCT) curves of 72A.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.
Embodiment 1：
As illustrated, Fig. 1 is the process layout of minimum specification cord steel wire rod first embodiment of the invention；Including at a high speed
Wire rod production line and it is arranged on the minimum specification rolling line after high-speed wire production line, the minimum specification rolling line
Including multi-roll mill unit.The present embodiment high-speed wire production line includes following technology arrangement, wherein 1 is heating furnace；2 be 6 machines
Frame roughing mills；3 be crop flying shear；4 be 6 frame intermediate mills；5 be crop flying shear；6 be 6 frame pre-finishing mill groups；7 be pre-
Finish rolling rear water box；8 be crop flying shear；9 be 8 frame mm finishing mill units；10 be finish rolling rear water box；13 be pinch roll and Laying head；14
For Stanermo wind-cooling linear；15 be collection volume station；Minimum specification rolling line includes multi-roll mill unit 16 and cord steel crop
Tail and collection device 17, roller mill unit 16 can be three-high mill or duo mill or four-high mill.With high-speed wire mill
Mm exemplified by Φ 5.5.
(1) heating steel billet：
Heating steel billet process can be heated using cold base or hot base, using heat stepwise, point preheating section, bringing-up section and soaking
Section, wherein heating soaking zone temperature is 1050 DEG C~1250 DEG C；Tapping temperature is 950 DEG C~1170 DEG C；
(2) high-speed wire rolling process：
According to typical high-speed rod Process configuration, common high-speed wire rolling process totally 28 passes, including the road of roughing 6
It is secondary, in roll 6 passages, the pre- passage of finish rolling 6, the passage of finish rolling 10, common finishing mill of high-speed wire rod mill inlet temperature is 800 DEG C~950 DEG C, finish rolling
Cord steel dimensions are ± 0.15mm after 10 passages；
(3) high-speed rod water cooling process：
Common high line sets water cooling section before and after mm finishing mill unit, and water cooling process is divided into two sections of water coolings, by water cooling line water
Ice chest cooling water pressure, the control of nozzle number opening and closing are respectively controlled to mill inlet temperature, laying temperature, are specifically：
It is 0.05MPa~1.0MPa to control water cooling box cooling water pressure, and common finishing mill of high-speed wire rod mill inlet temperature is 800 DEG C~950 DEG C, is told
Silk temperature is 800 DEG C~900 DEG C；
(4) high-speed rod is air-cooled and collection rolls up process：
Cooling is controlled after rolling on stelmo line, roller table speed 0.3m/s~2.0m/s is air-cooled using being segmented, air-cooled
Blower fan is fully opened before line, it is ensured that wire rod is quickly cooled down, and treats that cord steel temperature is cooled to perlitic transformation temperature range, wire rod wind
Even Close All is opened in machine part, is required according to phase transition temperature, stay-warm case can be closed.
Further, in stelmor line traffic control cooling working procedure, cooling velocity >=15 DEG C/s before phase transformation, temperature control during phase transformation
At 550 DEG C~680 DEG C.In air-cooled line middle, wire rod carries out collection volume, offline.
Further, it can collect volume erect-position according to process requirements in air-cooled line centre or afterbody, realize spirit in stelmo line
Work is offline；
(5) minimum specification rolling process：
After collection retracting collection, then cord steel temperature carries out minimum specification continuous rolling at 400 DEG C~600 DEG C, rolling
10~20 passages, single pass compression ratio 1.01~1.40, final finished size is Φ 0.8mm~Φ 1.6mm, rolling after rolling
Speed 0.1m/s~30m/s,
Further, minimum specification rolling process, rolling temperature is 20 DEG C~600 DEG C；
Further, to ensure product size precision, milling train uses duo mill, three-high mill or four-high mill；It is minimum
Reachable ± the 0.015mm of wire product precision that specification rolling process is produced；
Further, to ensure that preamble high-speed wire production line is matched with minimum specification rolling process yield, it can configure many
The minimum specification rolling process of bar is corresponding with a high-speed wire production line.
Embodiment 2：
Fig. 2 is the process layout of minimum specification cord steel wire rod first embodiment of the invention；Including high-speed wire mill
Line includes multiple roll with the minimum specification rolling line after high-speed wire production line, the minimum specification rolling line is arranged on
Milling train unit.The present embodiment high-speed wire production line includes following technology arrangement, wherein 1 is heating furnace；2 be 6 frame roughing mills
Group；3 be crop flying shear；4 be 6 frame intermediate mills；5 be crop flying shear；6 be 6 frame pre-finishing mill groups；7 be water after pre- finish rolling
Case；8 be crop flying shear；9 be 8 frame mm finishing mill units；10 be finish rolling rear water box；11 be to subtract sizing；12 be to subtract sizing rear water box；13
For pinch roll and Laying head；14 be Stanermo wind-cooling linear；15 be collection volume station；Minimum specification rolling line includes multi-roll mill
Unit 16 and cord steel crop end and collection device 17, roller mill unit 16 can be three-high mill or duo mill or four rollings
Machine.
With high-speed wire mill Φ 5.0mm, minimum specification is produced exemplified by Φ 1.6mm 72A, according to the present embodiment, produces work
Sequence includes：Heating steel billet, roughing, in roll, pre- finish rolling, water cooling after water cooling, finish rolling, finish rolling before finish rolling, subtract fixed diameter rolling, subtract sizing
Water cooling, spinning, air-cooled stelmor, collection retracting collection, uncoiling, continuous warm-rolling (or cold rolling), collection afterwards, the technique is specific as follows：
1) steel is bad heats：Steel billet sectional dimension 160mm × 160mm, using heat stepwise, point preheating section, bringing-up section and
Hot arc, preheating section temperature be 920 DEG C~960 DEG C, bringing-up section temperature be 1100 DEG C~1150 DEG C, soaking zone temperature be 1180 DEG C~
1210 DEG C of tapping temperatures are 1100 DEG C~1150 DEG C；Steel billet time inside furnace is 100min~180min；
2) roughing, in roll and pre- finish rolling：Including the passage of roughing 6, in roll 6 passages, the pre- passage of finish rolling 6, through roughing, in roll and
Pre- finish rolling is after totally 18 passes, and workpiece measurement is Φ 16.6mm ± 0.5mm；
3) water cooling before finish rolling：It is 0.1MPa~0.6MPa, 850 DEG C of mill inlet temperature to control water cooling box cooling water pressure
~950 DEG C, the rolled piece core table temperature difference≤50 DEG C；
4) cooling is controlled after finish rolling and finish rolling：Rolled piece through 8 passage mm finishing mill units roll after, workpiece measurement be Φ 6.60mm ±
0.15mm, it is 0.1MPa~0.6MPa to control water cooling box cooling water pressure, subtracts 800 DEG C~880 DEG C of sizing inlet temperature, rolled piece core
The table temperature difference≤30 DEG C；
5) fixed diameter rolling and control cooling are subtracted：Rolled piece is after 2 passage reducing and rollings and the deformation of 2 passage fixed diameter rollings, rolled piece
Size is Φ 5.07mm ± 0.10mm, and it is Φ 5.00mm ± 0.10mm to be cooled to workpiece measurement after normal temperature, and rolled piece goes out to subtract after sizing
Cooled down through water tank, cooling water pressure is 0.1MPa~0.6MPa,；
6) spin：Rolled piece laying temperature is 800 DEG C~850 DEG C；It is cold that rolled piece enters stelmor after spinning, in disk round shape
But line is controlled cooling；
7) stelmor is air-cooled and collection retracting collects:
Wire rod controls cooling on stelmo line, and roller table speed 0.8m/s~1.2m/s fully opens No. 1 and No. 2 wind
Machine, No. 3 fan sections are opened, it is ensured that, when 72A wire temperatures are higher than 680 DEG C, cooling velocity >=15 DEG C/s, subsequent wire rod is carried out
Slow cooling, now cooling velocity≤10 DEG C/s, transformation time >=20s, now No. 4 blower fan~No. 6 blower fans completely close, treat line
After the completion of material phase transformation, wire rod carries out collection volume, offline, and now cord steel wire temperature is 400 DEG C~500 DEG C；
8) the continuous warm-rolling of minimum specification (or cold rolling) and collection：
After uncoiling, wire rod directly carries out Rolling Production, rolled piece inlet temperature into minimum specification continuous rolling production line
≤ 500 DEG C, preceding 8 passage, single pass compression ratio 1.10~1.40, through 8 passes deform after workpiece measurement be Φ 2.20mm ±
0.05mm, 9~14 passage single pass compression ratios 1.01~1.30, through 6 passes deform after workpiece measurement be Φ 1.60mm ±
0.015mm, tandem rolling line wire rod muzzle velocity is 1m/s~30m/s.Subsequent rolled piece carries out crop end and collection.
Finally illustrate, preferred embodiment above is merely illustrative of the technical solution of the present invention and unrestricted, although logical
Cross above preferred embodiment the present invention is described in detail, it is to be understood by those skilled in the art that can be
Various changes are made to it in form and in details, without departing from claims of the present invention limited range.
Claims (10)
1. a kind of minimum specification cord steel wire craft arrangement, including high-speed wire production line, it is characterised in that：Also include setting
Minimum specification rolling line after high-speed wire production line, the minimum specification rolling line includes multi-roll mill machine
Group.
2. a kind of minimum specification cord steel wire craft arrangement according to claim 1, it is characterised in that：The high-speed line
Material production line includes the heating furnace set gradually, frame roughing mills, frame intermediate mill, frame pre-finishing mill group, pre- finish rolling
Rear water box, frame mm finishing mill unit, finish rolling rear water box, pinch roll and Laying head, Stanermo wind-cooling linear, collection volume station.
3. a kind of minimum specification cord steel wire craft arrangement according to claim 2, it is characterised in that：After the finish rolling
It is provided with after water tank and subtracts apparatus for fixed diameter rolling and subtract sizing rear water box.
4. a kind of minimum specification cord steel wire craft arrangement according to claim any one of 1-3, it is characterised in that：Institute
Stating minimum specification rolling line also includes being arranged on cord steel crop end and collection device after milling train unit.
5. a kind of minimum specification cord steel wire craft arrangement according to claim 4, it is characterised in that：The milling train machine
Group is duo mill or three-high mill or four-high mill.
6. a kind of minimum specification cord steel wire rod preparation method, it is characterised in that：Production process includes, heating steel billet, roughing, in
Roll, pre- finish rolling, water cooling, spinning, air-cooled stelmor, collection retracting collection, uncoiling, continuous warm-rolling after water cooling, finish rolling, finish rolling before finish rolling
Or it is cold rolling.
7. a kind of minimum specification cord steel wire rod preparation method according to claim 6, it is characterised in that：It is additionally included in essence
Carry out subtracting fixed diameter rolling after squezzing is cold and subtract sizing water cooling.
8. a kind of minimum specification cord steel wire rod preparation method according to claim 6 or 7, it is characterised in that：Collection retracting
After collection, then cord steel temperature carries out minimum specification continuous rolling at 400 DEG C~600 DEG C, rolls 10~20 passages, single
Passage compression ratio 1.01~1.40, mill speed 0.1m/s~30m/s.
9. a kind of minimum specification cord steel wire rod preparation method according to claim 8, it is characterised in that：In minimum specification
During continuous rolling, rolling temperature is 20 DEG C~600 DEG C.
10. a kind of minimum specification cord steel wire rod preparation method according to claim 9, it is characterised in that：Heating steel billet
Using heat stepwise, including preheating section, bringing-up section and soaking zone.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710557215.7A CN107138524A (en) | 2017-07-10 | 2017-07-10 | A kind of minimum specification cord steel wire craft arrangement and preparation method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710557215.7A CN107138524A (en) | 2017-07-10 | 2017-07-10 | A kind of minimum specification cord steel wire craft arrangement and preparation method |
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ID=59776117
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108620439A (en) * | 2018-06-01 | 2018-10-09 | 盐城市联鑫钢铁有限公司 | It is a kind of to solve process and equipment of the valve snail with circle property difference |
| CN110052494A (en) * | 2019-04-29 | 2019-07-26 | 北京勤泽鸿翔冶金科技有限公司 | A method of control wire rod rolling dimensional accuracy |
| CN112355049A (en) * | 2020-11-16 | 2021-02-12 | 唐山市玉田金州实业有限公司 | Wire rod finish rolling mechanism and rolling method |
| CN113492150A (en) * | 2021-06-24 | 2021-10-12 | 盐城市联鑫钢铁有限公司 | Wire CRCC (continuous cooling control) production process and production line thereof |
| CN114082780A (en) * | 2021-11-20 | 2022-02-25 | 酒泉钢铁(集团)有限责任公司 | Production process for reducing residual stress of large-size high-carbon steel wire |
| WO2023024678A1 (en) * | 2021-08-26 | 2023-03-02 | 武汉钢铁有限公司 | High-strength steel cord with low wire breakage rate, and rolling method and use thereof |
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| JPH11267703A (en) * | 1998-03-18 | 1999-10-05 | Sumitomo Metal Ind Ltd | Method for continuously cold-rolling small-diameter wire |
| CN103667655A (en) * | 2013-12-10 | 2014-03-26 | 南京钢铁股份有限公司 | Production method of cord thread steel wire rod with diameter of 5mm |
| CN206997345U (en) * | 2017-07-10 | 2018-02-13 | 中冶赛迪工程技术股份有限公司 | A kind of minimum specification cord steel wire craft arrangement |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108620439A (en) * | 2018-06-01 | 2018-10-09 | 盐城市联鑫钢铁有限公司 | It is a kind of to solve process and equipment of the valve snail with circle property difference |
| CN110052494A (en) * | 2019-04-29 | 2019-07-26 | 北京勤泽鸿翔冶金科技有限公司 | A method of control wire rod rolling dimensional accuracy |
| CN112355049A (en) * | 2020-11-16 | 2021-02-12 | 唐山市玉田金州实业有限公司 | Wire rod finish rolling mechanism and rolling method |
| CN113492150A (en) * | 2021-06-24 | 2021-10-12 | 盐城市联鑫钢铁有限公司 | Wire CRCC (continuous cooling control) production process and production line thereof |
| WO2023024678A1 (en) * | 2021-08-26 | 2023-03-02 | 武汉钢铁有限公司 | High-strength steel cord with low wire breakage rate, and rolling method and use thereof |
| CN114082780A (en) * | 2021-11-20 | 2022-02-25 | 酒泉钢铁(集团)有限责任公司 | Production process for reducing residual stress of large-size high-carbon steel wire |
| CN114082780B (en) * | 2021-11-20 | 2024-03-08 | 酒泉钢铁(集团)有限责任公司 | Production process for reducing residual stress of large-sized high-carbon steel wire rod |
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Application publication date: 20170908 |