CN102851579A - Nb-containing micro-alloyed high-carbon steel hot-rolled wire rod and manufacturing method thereof - Google Patents
Nb-containing micro-alloyed high-carbon steel hot-rolled wire rod and manufacturing method thereof Download PDFInfo
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Abstract
The invention comprises an Nb-containing micro-alloyed high-carbon steel hot-rolled wire rod and a manufacturing method thereof. The invention belongs to the technical field of hot-rolled wire rods. The hot-rolled wire rod comprises the components of, by mass: 0.83-1.00% of C, 0.15-0.35% of Si, 0.6-0.9% of Mn, 0-0.50% of Cr, 0-0.15% of V, 0.01-0.20% of Nb, and balance of Fe. A converter is adopted; a double slag method is adopted; and high tensile carbon operation is adopted. Slag is blocked, and molten steel is tapped. Recarburization is carried out by using a low-nitrogen recarburizer. When steel is fetched from an LF refining station, an oxygen activity is controlled below 10ppm. In a refining final slag, a total amount of FeO and MnO is no higher than 3%. An inclusion modification treatment is carried out on a Ca-Si line. 160mm*160mm small billets are adopted. Terminal electromagnetic stirring is adopted in cooperation of a crystallizer. Full-protection and constant-pulling-speed casting is carried out by using a continuous casting machine. A reasonable secondary cooling system is adopted. An appropriate open rolling temperature is controlled, such that shrinkage cavity welding probability is increased. Pre-water-cooling and phase-transformation-strengthening cooling technology are applied for controlling tissue and performance. After aging, mechanical property tensile strength of the wire rod is higher than 1280MPa, and an area reduction is greater than 30%.
Description
Technical field
The invention belongs to the gren rod technical field, particularly relate to a kind of Nb of containing micro-alloyed high-carbon steel gren rod and manufacture method, be applicable to produce Φ 18.9mm and Φ 21.6mm, intensity 1860MPa level steel strand and Φ 8～11mm bright steel wire Φ 13～16mm hot rolling high-carbon steel wire rod.
Background technology
Prestress wire is widely used in the construction of the Infrastructure such as mine, colliery, deep-water quay, motorway, high-speed railway, Highrise buildings, airport, use steel strand to replace regular reinforcement can increase the span of buildings, improve work-ing life, reduce construction costs.So this product speed that promotes the use at home is very rapid in recent years.The domestic consumption of this product was 100,000 tons in 2000, and demand reaches 2,500,000 tons up till now.Simultaneously, this updating and upgrading of a product is also very fast, from before 1670MPa develop into 2000MPa through 1770MPa, 1860MPa.Specification develops into the specification of Φ 17.8mm by original Φ 9.53mm, Φ 11.11mm, Φ 12.70mm, Φ 15.24mm.Along with the later stage of exploitation has been arrived in mine, the colliery of most domestic, underground darker position is extended at the top, tunnel of exploitation.The tunnel proposes higher requirement to the safety coefficient of top shield, the significant shear stress that produces when the changing of the relative positions occurs to resist the different rock-layers structure.There has been demand in large-scale mine and colliery to the steel strand of Φ 18.9 and Φ 21.6mm specification.At present, the SWRH82B that other steel strand raw material of making diameter of phi 17.8mm intensity 1860MPa level is diameter of phi 13mm, wire rod tensile strength remains on more than the 1200MPa.Make the steel strand of Φ 18.9 and Φ 21.6mm specification, diameter of phi 13mm wire rod green strength is not less than 1250MPa, and SWRH82B wire rod originally can not satisfy this requirement.Need a kind of wire rod higher than SWRH82B tensile strength of exploitation to meet the demands and make the requirement of larger gauge steel twisted wire, for improving the tensile strength of wire rod, traditional technological line is to add the alloys such as V on the basis of SWRH82B composition, utilize solid molten the reinforcement with precipitation strength of V to improve intensity, increased the production cost of wire rod.
Chinese patent ZL200410155452.3 adopts converter smelting, the refining of LF stove, the 130mm * little square billet of 130mm section, M-EMS, and standard stelmor control cold line, its air quantity only are 83000 m
3/ h, speed of cooling only is under 5～8 ℃ the condition, can produce other steel strand of Φ 15.24mm intensity 1860MPa level in batches with Φ 12～14mm specification wire rod.And under this appointed condition, produce Φ 18.9 and Φ 21.6mm intensity 1820MPa level steel strand with larger specification Φ 13～16mm gren rod report not.On the Chinese patent ZL200410155452.3 technical foundation, adopting 130mm * 130mm continuous casting process for billets production tensile strength is Φ 12～14mm gren rod greater than 1150MPa rank specification, is mainly used in making Φ 15.24mm1860MPa steel strand.Its main wire rod specification is the 12.5mm wire rod, and cold working is drawn into Φ 5.05 and 5.25mm by Φ 12.5mm, and intensity reaches 1900～1960MPa.The Φ 13mm wire rod of producing can only be made 15.24mm intensity 1860MPa level steel strand.
Summary of the invention
The object of the present invention is to provide a kind of Nb of containing micro-alloyed high-carbon steel gren rod and manufacture method, require to be controlled at the characteristics that 1250Mpa requires for making the used former wire rod of large gauge steel twisted wire, by the C among the SWRH82B is brought up to 0.85～0.95% by original 0.79～0.82%, design a kind of new high carbon steel manufacture method and composition.
The composition of gren rod of the present invention is in quality %, C:0.83～1.00%, Si:0.15～0.35%, Mn:0.60～0.90%, Cr:0～0.50%, V:0～0.20%, Nb:0.01～0.20%, surplus: Fe.
Manufacture method of the present invention: adopt 160mm * 160mm continuously cast bloom and controlled rolling, cooling control technology production 18.9 and the 21.6mm intensity 1860MPa level steel strand SWRH87B gren rod of Φ 13～16mm specification; comprise desulfurizing iron skim → converter smelting → pushing off the slag tapping → ladle deoxidation and alloying → ladle slag upgrading → LF ladle refining → feeding the Si-Ca line → little square billet full guard of steel ladle bottom argon blowing soft blow → 160mm * 160mm casting → crystallizer mated ends induction stirring → heating → controlled rolling → control cools off, and controls following technical parameter in technological process:
Double-slag operation is adopted in converter, and end point carbon is controlled by 0.35～0.70%, 1585～1625 ℃ of tapping temperatures, and the pushing off the slag tapping is between the lower slag thickness 0～50mm in the control converter tapping process;
Adopt low nitrogen carburelant carburetting, use the Si-Ca-Ba deoxidation, add-on 1.5～2.5kg/t steel, every stove adds 650～850kg synthetic slag;
Advancing LF refining station control oxygen activity remains between 0～15ppm.Refining finishing slag FeO+MnO sum is between 0～3%;
Ca Si wire feeding is mingled with denaturing treatment; The soft blow time guaranteed at 15～20 minutes, made to be mingled with to greatest extent come-up in the steel;
160mm * 160mm continuous small-billet casting; crystallizer adopts the induction stirring of 300A, 5Hz; terminal 400A, the 5Hz induction stirring of adopting; adopt the large covering agent of high alkalinity; large bag argon envelope, the omnidistance Argon of tundish, the casting of submerged nozzle full guard; cast is according to the permanent pulling rate control of 1.85m/min, Metal in Tundish superheating temperature≤25 ℃, and continuous casting two cold adopts the 0.85L/Kg specific water to pour into a mould.
Adopt suitable start rolling temperature, start rolling temperature is controlled at 1020～1150 ℃, is beneficial to the seam of shrinkage cavity, increases the probability of shrinkage cavity seam; Use pre-water-cooled and phase transformation strengthening cooling technology control tissue and performance.
Employing is incubated wire rod after by the wire rod phase transformation online, shortens the aging time of wire rod before following process.
Wire rod of the present invention is used for making Φ 18.9 and Φ 21.6mm intensity 1820MPa level steel strand and Φ 8～11mm bright steel wire.
The present invention is incubated wire rod after by the wire rod phase transformation online, shortens the aging time of wire rod before following process.Produce wire rod Φ 13～16mm between, tensile strength is greater than 1280MPa after the wire rod timeliness, reduction of area is greater than 30%.Use pre-water-cooled and phase transformation strengthening cooling technology control tissue and performance.
The present invention has successfully opened up strip adoption 160mm * 160mm continuous cast billet and has produced Φ 18.9 and Φ 21.6mm intensity 1820MPa level steel strand Φ 13～16mm carbon steel gren rod with a high standard processing technology routine, the wire rod of producing is superior in quality, the user uses well, remarkable benefit.
Embodiment
The present invention can implement in Steel Complex, and the below is Shoudu Iron and Steel Co the second steelworks-Shoudu Iron and Steel Co the first high-speed wire factory, the example that adopts this invention to produce.
Operational path is: desulfurizing iron is skimmed → two steel-making 210t converter smelting → converter slag-resisting tapping → ladle deoxidation alloying → LF ladle refinings → hello the rolling Ф 13～16mm wire rod of Si-Ca line → steel ladle bottom argon blowing soft blow → 160mm * 160mm billet caster → cc billet surface quality inspection → heating → high-speed rod-rolling mill → control cooling → finished product packings.
Converter smelting main technologic parameters: stove nominal capacity: 210t, the mode of fascinating: integral four point toothing integral torsion-beam-types, converter overall height H=11842mm, body of heater velocity of rotation: V=0.1～1r/min;
LF stove main technologic parameters: rated capacity: single water 210t of Baogang, external diameter suitable for reading: 4950mm, electrode diameter 500 mm, furnace cover lifting stroke: 600mm;
Continuous caster main technologic parameters: 160mm*160mm square billet; 8 machines, 8 streams, automatic control of liquid level all risk insurance protecting band M-EMS;
Steel Mill's main technologic parameters: 120t/h stepping beam type gas furnace; 28 frame tandem mill groups; 109.8m delaying type stelmor control cooling line, 20～40 tons of SUND self-binders of snap-in force.
Embodiment 1: heat (batch) number 8B05482
Converter smelting, 180 tons of raw material molten iron add-ons, 20.5 tons of conversion pigs, 4.6 tons of steel scraps, oxygen supply work oxygen is pressed 7.5kg/cm
2, oxygen supply time 13 minutes and 40 seconds; Lime adding amount 7500kg, light dolomite 1665kg; Ore deposit 1765kg difficult to understand; End point carbon: 0.40%, phosphorus: 0.015%; 1610 ℃ of tapping temperatures.
Deoxidation alloying, Si-Ca-Ba 300kg, silicomanganese 1000kg, ferromanganese 1000kg, carbon ferrochrome 970kg.
The LF refining furnace, argon gas early stage, flow was 500NL/min, mid-term flow 340NL/min, later stage argon flow amount 100NL/min, synthetic slag adds 650kg, submerged arc slag 320kg, departures oxygen activity 6.2ppm.
1485 ℃ of middle bag temperature, the crystallizer water yield 1650 L/min, pulling rate 1.85/min.
Start rolling temperature: 1090 ℃, go out final rolling temperature: 950 ℃, laying temperature: 890 ℃.
Finished product composition: C:0.83%; Si:0.18%; Mn:0.65%; S:0.006%; P:0.012%; Cr:0.29%; V:0.07%; Nb:0.01%.
Wire rod tensile strength: 1290MPa, reduction of area 36.5%.
Embodiment 2: heat (batch) number 8A04946
Converter smelting, 184 tons of raw material molten iron add-ons, 20.3 tons of conversion pigs, 5 tons of steel scraps, oxygen supply work oxygen is pressed 7.6kg/cm
2, oxygen supply time 12 minutes and 33 seconds.Lime adding amount 13900kg, light dolomite 260kg; Ore deposit 4.6kg difficult to understand; End point carbon: 0.58%, phosphorus: 0.015%; 1590 ℃ of tapping temperatures.
Deoxidation alloying, Si-Ca-Ba 350kg, silicomanganese 89kg, ferromanganese 1100kg, carbon ferrochrome 1000kg.
The LF refining furnace, argon gas early stage, flow was 490NL/min, mid-term flow 330NL/min, later stage argon flow amount 30NL/min, synthetic slag adds 600kg, submerged arc slag 300kg, departures oxygen activity 9ppm.
1480 ℃ of middle bag temperature, the crystallizer water yield 1659 L/min, pulling rate 1.85/min.
Start rolling temperature: 1070 ℃, go out final rolling temperature: 937 ℃, laying temperature: 866 ℃.
Finished product composition: C:0.87%; Si:0.25%; Mn:0.75%; S:0.009%; P:0.015%; Cr:0.30%; V:0.08%; Nb:0.02%.
Wire rod tensile strength: 1310MPa, reduction of area 38.7%.
Embodiment 3: heat (batch) number 8B05478
Converter smelting, 176 tons of raw material molten iron add-ons, 15.3 tons of conversion pigs, 20.6 tons of steel scraps, oxygen supply work oxygen is pressed 7kg/cm
2, oxygen supply time 12 minutes and 23 seconds.Lime adding amount 12600kg, light dolomite 330kg; Ore deposit 3070kg difficult to understand; End point carbon: 0. 57%, phosphorus: 0.01%; 1600 ℃ of tapping temperatures.
Deoxidation alloying, Si-Ca-Ba 330kg, silicomanganese 920kg, ferromanganese 1550kg, carbon ferrochrome 1000kg.
The LF refining furnace, argon gas early stage, flow was 520NL/min, mid-term flow 330NL/min, later stage argon flow amount 90NL/min, synthetic slag adds 600kg, submerged arc slag 300kg, departures oxygen activity 6.8ppm.
1479 ℃ of middle bag temperature, the crystallizer water yield 1655 L/min, pulling rate 1.85/min.
Start rolling temperature: 1090 ℃, go out final rolling temperature: 945 ℃, laying temperature: 889 ℃.
Finished product composition: C:0.95%; Si:0.22%; Mn:0.85%; S:0.004%; P:0.010%; Cr:0.32%; V:0.05%; Nb:0.05%.
Wire rod tensile strength: 1340MPa, reduction of area 34.5%.
Embodiment 4: heat (batch) number 8B05455
Converter smelting, 185 tons of raw material molten iron add-ons, 25 tons of conversion pigs, 10 tons of steel scraps, oxygen supply work oxygen is pressed 7.2kg/cm
2, oxygen supply time 13 minutes and 36 seconds; Lime adding amount 14570kg, fluorite 240kg; Ore deposit 1950kg difficult to understand; End point carbon: 0.70%, phosphorus: 0.012%; 1595 ℃ of tapping temperatures.
Deoxidation alloying, Si-Ca-Ba 320kg, silicomanganese 1010kg, ferromanganese 1000kg, carbon ferrochrome 864kg.
The LF refining furnace, argon gas early stage, flow was 542NL/min, mid-term flow 355NL/min, later stage argon flow amount 100NL/min, synthetic slag adds 660kg, submerged arc slag 320kg, the departures oxygen activity is 6.7ppm.
1480 ℃ of middle bag temperature, crystallizer water yield 1657L/min, pulling rate 1.85/min.
Start rolling temperature: 1090 ℃, go out final rolling temperature: 935 ℃, laying temperature: 905 ℃.
Finished product composition: C:1.0%; Si:0.18%; Mn:0.85%; S:0.010%; P:0.013%; Cr:0.45%; V:0.04%; Nb:0.15%.
Wire rod tensile strength: 1360MPa, reduction of area 36.7%.
Claims (2)
1. one kind contains Nb micro-alloyed high-carbon steel gren rod, it is characterized in that, composition is in quality %, C:0.83～1.00%, Si:0.15～0.35%, Mn:0.6～0.9%, Cr:0～0.50%, V:0～0.15%, Nb:0.01～0.20%, surplus: Fe.
2. manufacture method that contains Nb micro-alloyed high-carbon steel gren rod claimed in claim 1; technique comprises: desulfurizing iron is skimmed → converter smelting → pushing off the slag tapping → ladle deoxidation and alloying → ladle slag upgrading → LF ladle refining → hello the Si-Ca line → little square billet full guard of steel ladle bottom argon blowing soft blow → 160mm * 160mm casting → crystallizer mated ends induction stirring → heating → controlled rolling → control cooling; it is characterized in that the following technical parameter of control in technique:
Double-slag operation is adopted in converter, and end point carbon is controlled by 0.35～0.70%, 1585～1625 ℃ of tapping temperatures, and the pushing off the slag tapping, the lower slag gauge control in the control converter tapping process is between 0～50mm;
Adopt low nitrogen carburelant carburetting, use the Si-Ca-Ba deoxidation, add-on 1.5～2.5kg/t steel, every stove adds 650～850kg synthetic slag;
Go out LF refining station control oxygen activity and remain between 0～10ppm, refining finishing slag FeO+MnO sum is between 0～3%;
Ca Si wire feeding is mingled with denaturing treatment; The soft blow time guaranteed at 15～20 minutes, made to be mingled with to greatest extent come-up in the steel;
The average superheating temperature of control Metal in Tundish is controlled between 15～20 ℃, continuous casting adopts 1.85 m/mins of permanent pulling rates and full guard casting, adopt stronger 0.85L/kg two cold specific waters, crystallizer mated ends induction stirring is to reduce strand Central Carbon Segregation and shrinkage cavity;
Start rolling temperature: 1020～1150 ℃; Go out final rolling temperature: 920～960 ℃; Laying temperature: 880～920 ℃, be beneficial to the seam of stocking shrinkage cavity.
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|---|---|---|---|---|
| CN103103307A (en) * | 2013-01-24 | 2013-05-15 | 首钢总公司 | Method for producing steel for low-nitrogen stranded wire by use of non-vacuum process of converter |
| CN103667581A (en) * | 2013-11-22 | 2014-03-26 | 首钢水城钢铁（集团）有限责任公司 | Low-nitrogen SWR82B steel smelting method |
| CN104388826A (en) * | 2014-10-12 | 2015-03-04 | 首钢总公司 | Method for reducing hypereutectoid wire rod core network cementite |
| CN104745925A (en) * | 2015-04-03 | 2015-07-01 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Phi5.3mm 72A wire rod and preparation method thereof |
| CN107208224A (en) * | 2015-08-14 | 2017-09-26 | 株式会社特殊金属超越 | Cold-rolled high-carbon steel plate and its manufacture method |
| CN107904477A (en) * | 2017-10-12 | 2018-04-13 | 首钢集团有限公司 | A kind of production method of mining steel strand wires steel |
| CN110669981A (en) * | 2019-10-02 | 2020-01-10 | 江苏省沙钢钢铁研究院有限公司 | Vanadium-boron composite microalloyed cord steel wire rod and production method thereof |
| CN112301287A (en) * | 2020-11-09 | 2021-02-02 | 江苏省沙钢钢铁研究院有限公司 | Prestressed steel strand, wire rod for prestressed steel strand and production method of wire rod |
| CN112760561A (en) * | 2020-12-21 | 2021-05-07 | 江苏省沙钢钢铁研究院有限公司 | Wire rod for hand tool and preparation method thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101597713A (en) * | 2009-07-03 | 2009-12-09 | 首钢总公司 | A kind of microalloying SWRH87B gren rod and manufacture method thereof |
| 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 |
| CN102181786A (en) * | 2011-04-25 | 2011-09-14 | 江苏省沙钢钢铁研究院有限公司 | Coil rod used for 1670MPa level bridge cable zinc-coated wire and preparation method of coil rod |
-
2012
- 2012-09-07 CN CN2012103312398A patent/CN102851579A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101597713A (en) * | 2009-07-03 | 2009-12-09 | 首钢总公司 | A kind of microalloying SWRH87B gren rod and manufacture method thereof |
| 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 |
| CN102181786A (en) * | 2011-04-25 | 2011-09-14 | 江苏省沙钢钢铁研究院有限公司 | Coil rod used for 1670MPa level bridge cable zinc-coated wire and preparation method of coil rod |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103103307A (en) * | 2013-01-24 | 2013-05-15 | 首钢总公司 | Method for producing steel for low-nitrogen stranded wire by use of non-vacuum process of converter |
| CN103667581A (en) * | 2013-11-22 | 2014-03-26 | 首钢水城钢铁（集团）有限责任公司 | Low-nitrogen SWR82B steel smelting method |
| CN103667581B (en) * | 2013-11-22 | 2016-01-20 | 首钢水城钢铁（集团）有限责任公司 | A kind of low nitrogen SWRH82B smelting steel method |
| CN104388826A (en) * | 2014-10-12 | 2015-03-04 | 首钢总公司 | Method for reducing hypereutectoid wire rod core network cementite |
| CN104745925A (en) * | 2015-04-03 | 2015-07-01 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Phi5.3mm 72A wire rod and preparation method thereof |
| CN107208224A (en) * | 2015-08-14 | 2017-09-26 | 株式会社特殊金属超越 | Cold-rolled high-carbon steel plate and its manufacture method |
| CN107208224B (en) * | 2015-08-14 | 2018-11-09 | 株式会社特殊金属超越 | Cold-rolled high-carbon steel plate and its manufacturing method |
| CN107904477A (en) * | 2017-10-12 | 2018-04-13 | 首钢集团有限公司 | A kind of production method of mining steel strand wires steel |
| CN110669981A (en) * | 2019-10-02 | 2020-01-10 | 江苏省沙钢钢铁研究院有限公司 | Vanadium-boron composite microalloyed cord steel wire rod and production method thereof |
| CN110669981B (en) * | 2019-10-02 | 2021-07-16 | 江苏省沙钢钢铁研究院有限公司 | Vanadium-boron composite microalloyed cord steel wire rod and production method thereof |
| CN112301287A (en) * | 2020-11-09 | 2021-02-02 | 江苏省沙钢钢铁研究院有限公司 | Prestressed steel strand, wire rod for prestressed steel strand and production method of wire rod |
| CN112760561A (en) * | 2020-12-21 | 2021-05-07 | 江苏省沙钢钢铁研究院有限公司 | Wire rod for hand tool and preparation method thereof |
| CN113088811A (en) * | 2021-03-04 | 2021-07-09 | 天津荣程联合钢铁集团有限公司 | Niobium-containing alloy steel and preparation method thereof |
| CN113293337A (en) * | 2021-04-28 | 2021-08-24 | 顿口渔具科技(东莞)有限公司 | Niobium-vanadium composite microalloyed high-carbon steel wire for fishhook |
| CN114734009A (en) * | 2022-03-23 | 2022-07-12 | 江阴兴澄合金材料有限公司 | Steel wire for ultrahigh-strength card clothing and manufacturing method thereof |
| CN114734009B (en) * | 2022-03-23 | 2024-04-02 | 江阴兴澄合金材料有限公司 | Steel wire rod for ultrahigh-strength card clothing and manufacturing method thereof |
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