CN103817148A - Control method for reducing network cementite of steel wire rod for cord thread - Google Patents
Control method for reducing network cementite of steel wire rod for cord thread Download PDFInfo
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- CN103817148A CN103817148A CN201310703964.8A CN201310703964A CN103817148A CN 103817148 A CN103817148 A CN 103817148A CN 201310703964 A CN201310703964 A CN 201310703964A CN 103817148 A CN103817148 A CN 103817148A
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Abstract
The invention discloses a control method for reducing network cementite of a steel wire rod for a cord thread and belongs to the technical field of steel rolling. The control method includes the steps of heating process control for a heating furnace in a steel wire rod factory, precision rolling and sizing milling control, water cooling control, thread discharging temperature control and air cooling line cooling process control. A precision rolling inlet temperature and a thread discharging temperature need to be specifically adjusted according to different seasons, namely controlling the precision rolling inlet temperature within 930-960DEG C, controlling a precision rolling outlet temperature to be not higher than 1060DEG C, controlling the thread discharging temperature within 860-900DEG C, adjusting openness of a Jialing device to 60%, starting the first 8 fans with 100% of fan delivery and 260KW in power, and controlling a roller way speed of an inlet section within 0.9-1.1m/s. When the controlled method is utilized for continuously casting the steel wire rod for the cord thread by short-process small square billets which are 140mm<2>-150mm<2>, the probability for happening of the network cementite at the center of the steel wire rod can be reduced by 10%-15%.
Description
Technical field
The present invention relates to a kind of control method that reduces cord wire rod network cementite, be specially adapted to the technical process of continuous small-billet casting production cord wire rod, belong to technical field of steel rolling.
Background technology
Steel cord is the most wide product of development in rubber framework material, is the important source material of manufacturing steel wire radial-ply tyre, and the wire rod that is generally Φ 5.5mm by diameter is the filament of Φ 0.15～0.38mm through multi pass drawing to diameter, forms finally by plying.And cord is the special steel grade of producing steel cord with wire rod, draft can reach more than 99% in process of production, needs again through strict operations such as plying simultaneously, and therefore the degree of purity to wire rod and tissue are even more important.
Current domestic steel is looked forward to mainly controlling segregation degree by controlling the casting process degree of superheat, pulling rate and electromagnetic agitation etc., but, for continuous small-billet casting, segregation is that inevitably current this segregation degree tends to occur network cementite in wire rod heart portion in the operation of rolling, once there is network cementite in wire rod heart portion, in drawing process, can destroy the adhesion between matrix at the network cementite of grain boundaries, produce drawing fracture.For 82 rank cord steel, cord manufacturing enterprise requires the network cementite of wire rod to divide and must be less than 25 points according to your specail comment of Bekaa conventionally, and for 72 rank cord steel, conventionally requires be able to not to have the appearance of any network cementite.
The main component of cord steel is C, Si, Mn, show through Gleeble rolling simulation: reach 25k/s in cooling rate and can form martensitic structure, and the common < 20k/s of the cooling rate of Stelmor cooling line, therefore for cord steel, the consideration that the formation of martensitic structure can be more.
Therefore,, for cord steel, network cementite is apparent to the harm of drawing.Network cementite for cord with wire rod, numerous steel mills and scientific research institutions have all proposed corresponding solution, Anshan iron and steel plant proposes smelting and the rolling mill practice of all-steel cord wire rod in patent 96114630.3, propose to adopt water-cooled to add air-cooled cooling control technology after gren rod rolling, first carry out water-cooled, the laggard sector-style of water-cooled is cold, and the flow to water-cooled and air quantity and laying temperature are narrated.But the water-cooled cooling rate after rolling is a very general concept, water-cooled is not only relevant with the flow of water on the impact of cooling rate and temperature drop, simultaneously relevant with pressure, environment temperature, mill speed etc., so discharge is parameter more rambunctious in the actual operation of rolling on the impact of cooling rate and temperature drop at the scene.Also propose to regulate air quantity to make wire rod cooling velocity be controlled at 3～10 ℃/s simultaneously, but premenstruum (premenstrua), the Gleeble in laboratory simulated, result shows: in segregation situation, in the time that cooling rate is 3～10 ℃/s, the heart portion of wire rod still there will be network cementite, under this cooling rate, is disadvantageous to organizational controls.Patent 200910169807.7 has proposed a kind of production method of high-carbon steel wire rod, start rolling temperature, laying temperature are defined, but do not consider that the fluctuation of environment temperature is on the impact of technique, flexible operating aspect does not have concrete Temperature Setting foundation at the scene.Patent 201110075816.7 has proposed a kind of method that reduces center martensitic structure of high-carbon steel coil rod, heating furnace heating cycle, rolling pattern and cooling system are set forth, but just define concrete temperature, to concrete implementation process not mentioned, and in many places, the room temperature temperature difference in winter and summer can differ 20～40 ℃, and room temperature is very complicated process on the impact of material property in the operation of rolling, impact and the solution not mentioned of room temperature on the operation of rolling.
Therefore, for the cord wire rod that adopts continuous small-billet casting to produce, network cementite is the Main Bottleneck that restriction wire rod quality promotes, need to be on the basis of little billet segregation, and improving net carbon by rolling is problem demanding prompt solution.
Summary of the invention
The object of the invention is to propose a kind of method that reduces cord steel core portion network cementite, it can be produced cord in current short flow process and exist with wire rod on the basis of segregation, reduce net carbon rank by rolling mill practice, improve the qualification rate of product, overcome deficiency of the prior art.
For achieving the above object, the present invention has adopted following technical scheme:
1) heating furnace soaking zone temperature is controlled at 1120～1160 ℃, and soaking time is at 45～80min, and start rolling temperature is controlled at 1040～1070 ℃, and dephosphorization water under high pressure pressure is greater than 8MPa;
2) finishing stands adopts 8 frame tandem rollings, and passage reduction of area is controlled at 16～24%, and finishing pass lengthening coefficient is controlled at 1.2～1.3, and finish rolling inlet temperature is controlled at 930～960 ℃, finish rolling outlet temperature control≤1060 ℃;
3) after finish rolling, enter the reducing sizing mill of 4 frames, the drafts of tube reducing and sizing part is respectively 12～18% and 3～8%, lengthening coefficient is respectively 1.1～1.3 and 1.0～1.1, and controls the front water tank of reducing sizing mill, and making rolled piece is 30～50 ℃ from finishing mill outlet to reducing sizing mill temperature drop;
4) finish rolling is exported to the section of weaving silk 3 sections of water cooling boxes is set, and every segment length is 3 meters, and 20～50 ℃ of left and right of every section of temperature drop, make 860～900 ℃ of laying temperature controls;
5) aperture of adjusting air-cooled line blower fan and Optiflox device, after weaving silk, Optiflox device aperture on stelmo line is adjusted to 60～90%, open 1st～8 Fans, fan delivery is 100%, windscreen is all opened, and power of fan is 260KW, and entrance roller table speed is controlled at 0.9～1.1m/s;
Described finish rolling inlet temperature is during in room temperature≤10 ℃, and adopting finish rolling inlet temperature is 940～960 ℃, 10 ℃ of room temperature >, and finish rolling inlet temperature is 930～940 ℃;
Described laying temperature is during in room temperature≤10 ℃, and adopting laying temperature is 880～900 ℃, 10 ℃ of room temperature >, and adopting laying temperature is 860～880 ℃.
Compared with prior art, beneficial effect of the present invention is: the present invention is carrying out 140mm
2～150mm
2when continuous small-billet casting 82 and above rank cord thereof are used the production of wire rod, the network cementite tissue of wire rod heart portion obviously reduces, and contrast is found, the cord wire rod that adopts the present invention to produce, its qualification rate can be increased to more than 95% by 83%, has significantly reduced user's drawing and plying fracture of wire.
Accompanying drawing explanation
The metallographic structure figure of heart portion of 82 grades of wire rods of cord that accompanying drawing 1 is the method rolling that do not adopt the present invention and implement, wherein sodium picrate corrodes 20min in 55 ℃ of solution;
Accompanying drawing 2 is for adopting the metallographic structure figure of heart portion of 82 grades of wire rods of cord of the method rolling implemented of the present invention.
the specific embodiment
Below in conjunction with the drawings and the specific embodiments, technical scheme of the present invention is described further.
Embodiment 1:
Steel grade LX82A; Specification: 5.5mm; Rolling time: July; Room temperature: 30 ℃.
Heating furnace heating cycle:
| Bringing-up section temperature/℃ | Soaking zone temperature/℃ | Soaking zone time/min | Start rolling temperature/℃ | Dephosphorization hydraulic pressure/MPa |
| 1100 | 1140 | 60 | 1060 | 10 |
Finishing stands adopts 8 frame tandem rollings, and passage draft is as shown in the table:
| Sortie | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| Pass | Oval | Circle | Oval | Circle | Oval | Circle | Oval | Circle |
| Draft | 22.0% | 18.1% | 21.8% | 18.0% | 20.5% | 16.6% | 23.2% | 18.6% |
| Lengthening coefficient | 1.282 | 1.221 | 1.277 | 1.220 | 1.257 | 1.200 | 1.302 | 1.283 |
Finish rolling inlet temperature is controlled at 930～940 ℃, and finish rolling outlet temperature is controlled at≤and 1040 ℃.
The passage draft that subtracts sizing after finish rolling is as shown in the table:
| Sortie | 1 | 2 | 3 | 4 |
| Pass | Oval | Circle | Oval | Circle |
| Draft | 17.35 | 12.37 | 7.12 | 3.50 |
| Lengthening coefficient | 1.222 | 1.165 | 1.068 | 1.025 |
Adjust water volume in water tank, making rolled piece is 35 ℃ from finishing mill outlet to reducing sizing mill temperature drop, adjusts the water volume in water tank after reducing sizing mill, makes laying temperature be controlled at 870 ± 10 ℃.
After weaving silk, the Optiflox device aperture on stelmo line is adjusted to 80%, opens 1st～8 Fans, fan delivery is 100%, and windscreen is all opened, and power of fan is 260KW, and entrance roller table speed is controlled at 1.1m/s;
The heart portion metallographic structure (sodium picrate corrodes 20min in 55 ℃ of solution) of 82 grades of wire rods of cord that accompanying drawing 1 is the method rolling that do not adopt the present invention and implement, the heart portion metallographic structure of the cord wire rod that accompanying drawing 2 is the method rolling that adopts the present invention and implement.Can find that the net carbon rank after improving obviously reduces.
Embodiment 2:
Steel grade LX72A; Specification: 5.5mm; Rolling time: December; Room temperature :-2 ℃.。
Heating furnace heating cycle:
| Bringing-up section temperature/℃ | Soaking zone temperature/℃ | Soaking zone time/min | Start rolling temperature/℃ | Dephosphorization hydraulic pressure/MPa |
| 1080 | 1120 | 70 | 1040 | 8 |
Finishing stands adopts 8 frame tandem rollings, and passage draft is as shown in the table:
| Sortie | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| Pass | Oval | Circle | Oval | Circle | Oval | Circle | Oval | Circle |
| Draft | 22.0% | 18.1% | 21.8% | 18.0% | 20.5% | 16.6% | 23.2% | 18.6% |
| Lengthening coefficient | 1.282 | 1.221 | 1.277 | 1.220 | 1.257 | 1.200 | 1.302 | 1.283 |
Or finish rolling inlet temperature is controlled at 950 ± 10 ℃, finish rolling outlet temperature is controlled at≤and 1060 ℃.
The passage draft that subtracts sizing after finish rolling is as shown in the table:
| Sortie | 1 | 2 | 3 | 4 |
| Pass | Oval | Circle | Oval | Circle |
| Draft | 17.35 | 12.37 | 7.12 | 3.50 |
| Lengthening coefficient | 1.222 | 1.165 | 1.068 | 1.025 |
Adjust water volume in water tank, making rolled piece is 35 ℃ from finishing mill outlet to reducing sizing mill temperature drop, adjusts the water volume in water tank after reducing sizing mill, makes laying temperature be controlled at 890 ± 10 ℃.
After weaving silk, the Optiflox device aperture on stelmo line is adjusted to 70%, opens 1st～7 Fans, fan delivery is 100%, and windscreen is all opened, and power of fan is 260KW, and entrance roller table speed is controlled at 1.0m/s.
Claims (3)
1. a production technology that reduces cord wire rod network cementite, comprising: the cooling control technology on temperature-controlled rolling and Stanermo wind-cooling linear in high-speed wire rolling process, is characterized in that:
1) heating furnace soaking zone temperature is controlled at 1120～1160 ℃, and soaking time is at 45～80min, and start rolling temperature is controlled at 1040～1070 ℃, and dephosphorization water under high pressure pressure is greater than 8MPa;
2) finishing stands adopts 8 frame tandem rollings, and passage reduction of area is controlled at 16～24%, and finishing pass lengthening coefficient is controlled at 1.2～1.3, and finish rolling inlet temperature is controlled at 930～960 ℃, finish rolling outlet temperature control≤1060 ℃;
3) after finish rolling, enter the reducing sizing mill of 4 frames, the drafts of tube reducing and sizing part is respectively 12～18% and 3～8%, lengthening coefficient is respectively 1.1～1.3 and 1.0～1.1, and controls the front water tank of reducing sizing mill, and making rolled piece is 30～50 ℃ from finishing mill outlet to reducing sizing mill temperature drop;
4) finish rolling is exported to the section of weaving silk 3 sections of water cooling boxes is set, and every segment length is 3 meters, and 20～50 ℃ of left and right of every section of temperature drop, make 860～900 ℃ of laying temperature controls;
5) aperture of adjusting air-cooled line blower fan and Optiflox device, after weaving silk, Optiflox device aperture on stelmo line is adjusted to 60～90%, open 1st～8 Fans, fan delivery is 100%, windscreen is all opened, and power of fan is 260KW, and entrance roller table speed is controlled at 0.9～1.1m/s.
2. a kind of production technology that reduces cord wire rod network cementite according to claim 1, it is characterized in that: described finish rolling inlet temperature is during in room temperature≤10 ℃, adopting finish rolling inlet temperature is 940～960 ℃, 10 ℃ of room temperature >, finish rolling inlet temperature is 930～940 ℃.
3. a kind of production technology that reduces cord wire rod network cementite according to claim 1, it is characterized in that: described laying temperature is during in room temperature≤10 ℃, adopting laying temperature is 880～900 ℃, 10 ℃ of room temperature >, and adopting laying temperature is 860～880 ℃.
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| CN104307885A (en) * | 2014-10-13 | 2015-01-28 | 首钢总公司 | High-speed wire production method capable of controlling same-circle mechanical property fluctuation of high-carbon steel wire rods |
| CN104668820A (en) * | 2015-02-12 | 2015-06-03 | 江苏省沙钢钢铁研究院有限公司 | Production method of heat-resistant steel welding wire |
| CN105013837A (en) * | 2015-08-19 | 2015-11-04 | 首钢总公司 | Control method for improving high-speed wire rod air cooling uniformity |
| CN106269934A (en) * | 2016-09-21 | 2017-01-04 | 邢台钢铁有限责任公司 | The flexible control method of cord steel iron scale quality |
| CN106734191A (en) * | 2016-12-26 | 2017-05-31 | 江苏省沙钢钢铁研究院有限公司 | It is a kind of to reduce the rolling mill practice that low-carbon boron-containing steel wire rod returns useless rate |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05177245A (en) * | 1991-12-27 | 1993-07-20 | Kawasaki Steel Corp | Production of extremely fine wire having high strength and high toughness |
| US5897717A (en) * | 1997-03-12 | 1999-04-27 | Nippon Steel Corporation | High strength spring steel and process for producing same |
| KR20000041011A (en) * | 1998-12-21 | 2000-07-15 | 이구택 | Method of inhibiting generation of cementite from wire rod of hypereutectoid steel for reinforcing concrete |
| JP2003027137A (en) * | 2001-07-16 | 2003-01-29 | Nippon Steel Corp | Method for reducing segregation in wire rod rolled from continuously cast billet |
| JP2005194550A (en) * | 2003-12-26 | 2005-07-21 | National Institute For Materials Science | Steel with high strength and excellent cold headability, fastening parts, such as screw and bolt, or formed article, such as shafts, with excellent strength and their manufacturing methods |
| CN101649416A (en) * | 2009-09-04 | 2010-02-17 | 江苏省沙钢钢铁研究院有限公司 | High carbon steel wire rod and preparation method thereof |
| CN102259112A (en) * | 2011-04-12 | 2011-11-30 | 首钢总公司 | Method for controlling structural homogeneity of high-carbon steel coil rod for deep drawing of steel wire |
| CN102310092A (en) * | 2011-09-21 | 2012-01-11 | 首钢总公司 | High-carbon wire rod cooling control method with weakening of water cooling and enhancement of air cooling |
| CN102560047A (en) * | 2012-02-29 | 2012-07-11 | 首钢总公司 | Method for controlling grain-boundary embrittlement of high-carbon steel coil rods |
-
2013
- 2013-12-19 CN CN201310703964.8A patent/CN103817148B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05177245A (en) * | 1991-12-27 | 1993-07-20 | Kawasaki Steel Corp | Production of extremely fine wire having high strength and high toughness |
| US5897717A (en) * | 1997-03-12 | 1999-04-27 | Nippon Steel Corporation | High strength spring steel and process for producing same |
| KR20000041011A (en) * | 1998-12-21 | 2000-07-15 | 이구택 | Method of inhibiting generation of cementite from wire rod of hypereutectoid steel for reinforcing concrete |
| JP2003027137A (en) * | 2001-07-16 | 2003-01-29 | Nippon Steel Corp | Method for reducing segregation in wire rod rolled from continuously cast billet |
| JP2005194550A (en) * | 2003-12-26 | 2005-07-21 | National Institute For Materials Science | Steel with high strength and excellent cold headability, fastening parts, such as screw and bolt, or formed article, such as shafts, with excellent strength and their manufacturing methods |
| CN101649416A (en) * | 2009-09-04 | 2010-02-17 | 江苏省沙钢钢铁研究院有限公司 | High carbon steel wire rod and preparation method thereof |
| CN102259112A (en) * | 2011-04-12 | 2011-11-30 | 首钢总公司 | Method for controlling structural homogeneity of high-carbon steel coil rod for deep drawing of steel wire |
| CN102310092A (en) * | 2011-09-21 | 2012-01-11 | 首钢总公司 | High-carbon wire rod cooling control method with weakening of water cooling and enhancement of air cooling |
| CN102560047A (en) * | 2012-02-29 | 2012-07-11 | 首钢总公司 | Method for controlling grain-boundary embrittlement of high-carbon steel coil rods |
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| CN105013837A (en) * | 2015-08-19 | 2015-11-04 | 首钢总公司 | Control method for improving high-speed wire rod air cooling uniformity |
| CN106269934A (en) * | 2016-09-21 | 2017-01-04 | 邢台钢铁有限责任公司 | The flexible control method of cord steel iron scale quality |
| CN106269934B (en) * | 2016-09-21 | 2018-07-17 | 邢台钢铁有限责任公司 | The flexible control method of cord steel iron scale quality |
| CN106734191A (en) * | 2016-12-26 | 2017-05-31 | 江苏省沙钢钢铁研究院有限公司 | It is a kind of to reduce the rolling mill practice that low-carbon boron-containing steel wire rod returns useless rate |
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