CN107400823A - A kind of high-strength Ni-Cr corrosion resisting steels wire rods for steel strands and its production method - Google Patents
A kind of high-strength Ni-Cr corrosion resisting steels wire rods for steel strands and its production method Download PDFInfo
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- CN107400823A CN107400823A CN201610329364.3A CN201610329364A CN107400823A CN 107400823 A CN107400823 A CN 107400823A CN 201610329364 A CN201610329364 A CN 201610329364A CN 107400823 A CN107400823 A CN 107400823A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- 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
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
-
- 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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/009—Pearlite
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
It is as follows by weight percentage that the present invention provides a kind of high-strength Ni Cr corrosion resisting steels wire rods for steel strands and its production method, wire rod composition：C：0.80%~0.85%, Si：0.15%~0.35%, Mn：0.60%~0.90%, P：≤ 0.025%, S：≤ 0.015%, Cr：0.20%~0.30%, Ni：0.20%~0.30%, remaining is Fe and inevitable impurity element.Method include molten iron pretreatment-converter smelting-LF stoves refining-billet continuous casting-square billet tandem rolling-steel billet cleaning-heating-rolling-control it is cold-finishing-inspection-storage, wire rod of the present invention contains Cr, Ni element, improve the intensity, plasticity, corrosion resistance of wire rod, pass through steel-making, roll control technique, the wire rod of the excellent performance such as acquisition mechanical property, drawing processability, corrosion resistance.
Description
Technical field
The invention belongs to metal material field, more particularly to a kind of high-strength corrosion-resistant erosion steel strand wires disk
Bar and its production method.
Background technology
High-speed railway, highway bridge construction in, prestressing force beam body is with it from heavy and light, span
Greatly, many advantages, such as comfortable, saving steel and concrete, good endurance of driving a vehicle, has obtained universal
Using.But due to the non-construction factor that becomes more meticulous such as equipment, personnel, material technology, cause
Occur series of prestressed concrete structure durability failure accidents in recent decades, wherein in advance
Destroyed caused by prestress steel strand corrosion and account for the overwhelming majority, so as to cause serious consequence, this is
Cause the concern of countries in the world scholar and engineering circles.
Prestress wire corrosion, directly influence the active time of the engineerings such as bridge.Although adopt
Corrosion degree can be slowed down with the methods of zinc-plated, epoxy resin, but cost is too high and still has one
A little quality problems, therefore fail to be used widely.Thoroughly to solve prestress wire corrosion
Problem, it is necessary to set about from source, optimize steel strand wires material, improve the corrosion resistant of steel strand wires material
Corrosion energy.
《The production technology and its wire rod of a kind of high-strength prestressed steel wire 82B wire rods》
(CN102876983B) Cr in wire rod chemical composition is disclosed：0.20~0.24%, Ni：
≤ 0.10%, Cu：≤ 0.05%；Production process：Raw material, smelting, continuous casting, heating, temperature control
Rolling, spinning is coiled, control is cold, post processing obtains wire rod.The invention is improved by Cr, V
Wire rod intensity and plasticity, containing micro Ni elements, also it is not directed to the corrosive nature of wire rod.
《A kind of high Cr of small dimension 82B wire rods control cooling means after rolling》
(CN104001741A) a kind of small dimension is disclosedCr content ranges are
0.30~0.40%, steel billet sectional dimension scope is 100mm × 100mm~260mm × 260mm
82B wire rods roll after control cooling means.The invention is applied toSmall dimension disk
Bar, and it is not directed to the Design of Chemical Composition and corrosion resistance of wire rod.
《A kind of production method of 82B steel strand wires steel》(CN102211159B) twisted wire disclosed in
The production method of steel uses the work of converter smelting-LF refining-RH refinings-bloom continuous casting
Skill produces 82B steel, and Cr contents are 0.015~0.22% in steel, using dynamic soft reduction of continuous casting
Technology, realize that 82B wire rods composition, quality meet standard requirement.The invention only refers to 82B
The steel-smelting production process of steel strand wires, the rolling mill practice in later stage is not directed to, and also without proposition phase
The corrosion resistance of pass.
The content of the invention
A kind of wire rod is provided into setting up separately it is an object of the invention to overcome above mentioned problem and deficiency
Reasonable, continuous casting and rolling, controlled rolling and controlled cooling are counted, is produced on high-speed wire mill, obtains the corrosion of wire rod
Speed is less than the 70% of 82B steel strand wires wire rods.
The object of the present invention is achieved like this：
A kind of high-strength Ni-Cr corrosion resisting steels wire rods for steel strands, the composition percentage by weight of the wire rod
It is as follows than counting：C：0.80%~0.85%, Si：0.15%~0.35%, Mn：0.60%~0.90%,
P：≤ 0.025%, S：≤ 0.015%, Cr：0.20%~0.30%, Ni：0.20%~0.30%,
Remaining is Fe and inevitable impurity element.
Present component design reason is as follows：
C：C is the most obvious element of solution strengthening effect in steel, is increased with C content, steel
Intensity, hardness rise, and plasticity, toughness decline；
Si：Si is higher content intensified element, but Si too high levels, is unfavorable for cold working
Plastic deformation, therefore Si scope is 0.15%~0.35%；
Mn：Mn plays solution strengthening and refined crystalline strengthening, and postpones pearlite and ferrite
Transformation, improve the intensity and work hardening ability of steel.Therefore Mn scope is 0.60~0.90%；
P：P easily causes the cold short of steel, is the one side unfavorable to steel performance；But P is
The maximally effective element of decay resistance is improved in alloying element, therefore, P element control is existed
≤ 0.035%, the decay resistance beneficial to improving steel.S easily generation MnS in steel, cause
It is hot-short, therefore require that S contents are more few better；
Cr：By adding appropriate Cr, the pearlite piece interlamellar spacing for being adapted to drawing can be obtained,
The tensile strength of wire rod is improved, improves the plasticity and drawing property of wire rod, and improve corrosion resistance
Can, therefore Cr composition range is 0.20%~0.30%.
Ni：Ni is austenite former, and coordinating with chromium improves the high-temperature oxidation resistant of steel, answers
Power corrosive power, plasticity, weldability and toughness etc. are improved, therefore Ni composition range is
0.20%~0.30%.
A kind of production method of high intensity Ni-Cr corrosion resisting steel wire rods for steel strands, process route
For：Molten iron pretreatment-converter smelting-LF stoves refining-billet continuous casting-square billet tandem rolling-steel
Base cleaning-heating-rolling-control is cold-finishing-inspection-storage；
(1) continuous casting：Cross dimensions is (250-350) * (350-450) mm bloom,
The degree of superheat is no more than 30 DEG C, M-EMS+solidification end electromagnetic agitation, crystallizer electricity
Magnetic stir current intensity is 400A-500A, and solidification end electromagnetic agitation current strength is 400
A-600A, the defects of improving continuous casting billet internal segregation, shrinkage cavity, loose, non-metallic inclusion,
Improve the quality and qualification rate of strand.
(2) tandem rolling：Bloom is heated and is rolled into the steel billet of 100mm-200mm sizes,
And steel billet is detected a flaw, surface has the defects of crackle, scratch position to carry out reconditioning, ensures steel
Base surface zero defect.
(3) roll and control cold：
(a) by heating steel billet to 1020 DEG C~1070 DEG C, 100min~150min is incubated,
The poker temperature difference≤30 DEG C；
(b) control start rolling temperature be 930 DEG C~980 DEG C, entry temperature at finishing be 880 DEG C~
930 DEG C, subtract 880 DEG C~930 DEG C of sizing inlet temperature, 850 DEG C~880 DEG C of laying temperature；
(c) control cold：Using the Stanermo wind-cooling linear type of cooling, control wire rod is in pearlite
Cooling rate before phase transformation is 10 DEG C/s~12 DEG C/s, and pearlitic transformation temperature control is 620 DEG C~670
DEG C, during phase transformation cooling rate control increase cooling velocity after 1 DEG C/s~2.5 DEG C/s, phase transformation, will be cold
But speed control is in 6 DEG C/s~9 DEG C/s.
Using the beneficial effects of the present invention are：
The chemical composition of wire rod contains appropriate Cr, Ni element in the present invention, improves wire rod
Intensity and plasticity, and effectively increase the corrosion resistance of wire rod, pass through what is made steel, roll
Control technique, it is excellent to obtain the performances such as mechanical property, drawing processability, corrosion resistance
Different wire rod.
Rolling Production of the present inventionCorrosion resisting steel wire rods for steel strands, tension are strong
To spend for 1150~1250MPa, elongation percentage be 10~16%, reduction of area is 18~32%, by force
Degree and plasticity are good, are advantageous to drawing deformation.Soaked entirely in (23 DEG C of 96h) 5%NaCl solution
Under the conditions of corrosion test, the corrosion rate of wire rod of the present invention is rotten with wire rod less than 82B steel strand wires
Lose the 70% of speed.
Embodiment
Below by embodiment, the present invention is further illustrated.
The embodiment of the present invention according to the component proportion of technical scheme, smelted, continuous casting, rolling,
It is continuous annealing, smooth.The composition of wire rod of the embodiment of the present invention and comparative example 82B steel strand wires is shown in
Table 1.The mechanics and decay resistance of wire rod of the embodiment of the present invention and comparative example 82B steel strand wires
It is shown in Table 2.
The composition (wt%) of the wire rod of the embodiment of the present invention of table 1 and comparative example 82B steel strand wires
Implement one：
Smelted according to corrosion resisting steel wire rods for steel strands invention composition, then pour into section chi
The very little bloom for 280*380mm, 28 DEG C of the degree of superheat, M-EMS Current intensity
For 400A, solidification end electromagnetic agitation current strength is 500A.By the big of 280*380mm
Square billet is heated and is rolled into the steel billet that section is 155*155mm sizes, and then steel billet is visited
Wound, reconditioning is carried out to surface defect positions.
After above-mentioned technique, qualified steel billet is obtained.Using qualified steel billet in high-speed rod
On milling train.
RollingWire rod, rolling mill practice are as follows：By heating steel billet to 1030 DEG C, insulation
110min, 28 DEG C of the poker temperature difference；It is 960 DEG C to control start rolling temperature, and entry temperature at finishing is
910 DEG C, subtract 890 DEG C of sizing inlet temperature, 860 DEG C of laying temperature；Using stelmor
The air-cooled line type of cooling, 645 DEG C are cooled to 10 DEG C/s cooling rates, it is 1.5 then to control cooling rate
DEG C/s progress pearlitic transformations, cooling velocity is increased after phase transformation, cooling velocity is controlled at 8 DEG C
/ s terminates to cooling.
Implement two：
Smelted according to corrosion resisting steel wire rods for steel strands invention composition, then pour into section chi
The very little bloom for 280*380mm, 26 DEG C of the degree of superheat, M-EMS Current intensity
For 450A, solidification end electromagnetic agitation current strength is 550A.By the big of 280*380mm
Square billet is heated and is rolled into the steel billet that section is 155*155mm sizes, and then steel billet is visited
Wound, reconditioning is carried out to surface defect positions.
After above-mentioned technique, qualified steel billet is obtained.Using qualified steel billet in high-speed rod
On milling train.
RollingWire rod, rolling mill practice are as follows：By heating steel billet to 1040 DEG C, insulation
115min, 27 DEG C of the poker temperature difference；It is 950 DEG C to control start rolling temperature, and entry temperature at finishing is
915 DEG C, subtract 900 DEG C of sizing inlet temperature, 870 DEG C of laying temperature；With 11 DEG C/s cooling rates
655 DEG C are cooled to, then controls cooling rate to carry out pearlitic transformation for 2 DEG C/s, is increased after phase transformation
Cooling velocity, cooling velocity is controlled and terminated in 7.5 DEG C/s to cooling.
Implement three：
Smelted according to corrosion resisting steel wire rods for steel strands invention composition, then pour into section chi
The very little bloom for 280*380mm, 29 DEG C of the degree of superheat, M-EMS Current intensity
For 500A, solidification end electromagnetic agitation current strength is 450A.By the big of 280*380mm
Square billet is heated and is rolled into the steel billet that section is 155*155mm sizes, and then steel billet is visited
Wound, reconditioning is carried out to surface defect positions.
After above-mentioned technique, qualified steel billet is obtained.Using qualified steel billet in high-speed rod
Rolled on milling trainWire rod, rolling mill practice are as follows：By heating steel billet to 1040 DEG C, protect
Warm 100min, 28 DEG C of the poker temperature difference；It is 970 DEG C to control start rolling temperature, finish rolling entrance temperature
Spend for 920 DEG C, subtract 910 DEG C of sizing inlet temperature, 880 DEG C of laying temperature；With 11 DEG C/s
Cooling rate is cooled to 655 DEG C, then controls cooling rate to carry out pearlitic transformation for 2 DEG C/s, after phase transformation
Cooling velocity is increased, cooling velocity is controlled and terminated in 8.5 DEG C/s to cooling.
The mechanics and decay resistance of the wire rod of the embodiment of the present invention of table 2 and comparative example 82B steel strand wires
Claims (2)
- A kind of 1. high-strength Ni-Cr corrosion resisting steels wire rods for steel strands, it is characterised in that the wire rod into Divide as follows by weight percentage：C：0.80%~0.85%, Si：0.15%~0.35%, Mn：0.60%~0.90%, P：≤ 0.025%, S：≤ 0.015%, Cr：0.20%~ 0.30%th, Ni：0.20%~0.30%, remaining is Fe and inevitable impurity element.
- A kind of 2. producer of the high-strength Ni-Cr corrosion resisting steels wire rods for steel strands described in claim 1 Method, molten iron pretreatment-converter smelting-LF stoves refining-billet continuous casting-square billet tandem rolling-steel Base cleaning-heating-rolling-control is cold-finishing-inspection-storage, it is characterised in that：(1) continuous casting：Cross dimensions is (250-350) * (350-450) mm bloom, The degree of superheat is no more than 30 DEG C, M-EMS+solidification end electromagnetic agitation, crystallizer electricity Magnetic stir current intensity is 400A-500A, and solidification end electromagnetic agitation current strength is 400 A-600A；(2) square billet tandem rolling：Bloom is heated and is rolled into 100mm-200mm sizes Steel billet, and ensure billet surface zero defect；(3) roll and control cold：(a) by heating steel billet to 1020 DEG C~1070 DEG C, 100min~150min is incubated, The poker temperature difference≤30 DEG C；(b) control start rolling temperature be 930 DEG C~980 DEG C, entry temperature at finishing be 880 DEG C~ 930 DEG C, subtract 880 DEG C~930 DEG C of sizing inlet temperature, 850 DEG C~880 DEG C of laying temperature；(c) control cold：Using the Stanermo wind-cooling linear type of cooling：Wire rod is controlled in pearlite Cooling rate before phase transformation is 10 DEG C/s~12 DEG C/s, and pearlitic transformation temperature control is 620 DEG C~670 DEG C, during phase transformation cooling rate control increase cooling velocity after 1 DEG C/s~2.5 DEG C/s, phase transformation, will be cold But speed control is in 6 DEG C/s~9 DEG C/s.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109957728A (en) * | 2017-12-14 | 2019-07-02 | 鞍钢股份有限公司 | A kind of 800MPa grades of fastener weather-proof the cold heading steel and its production method |
| CN110624951A (en) * | 2019-08-27 | 2019-12-31 | 江苏省沙钢钢铁研究院有限公司 | Production method of high-strength cord steel square billet |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103014524A (en) * | 2012-12-05 | 2013-04-03 | 南京钢铁股份有限公司 | Preparation method of needle steel |
| CN103882313A (en) * | 2012-12-21 | 2014-06-25 | 鞍钢股份有限公司 | Wire rod for ultrahigh-strength fine cutting steel wire and producing method thereof |
| CN104213033A (en) * | 2014-09-03 | 2014-12-17 | 马钢(集团)控股有限公司 | 60-steel hot rolling coil rod with high strength and high plasticity and production method thereof |
| CN104451420A (en) * | 2014-12-15 | 2015-03-25 | 天津冶金集团中兴盛达钢业有限公司 | Low-temperature resistant steel strand suitable for liquefied natural gas engineering and production method thereof |
| CN105296865A (en) * | 2014-06-09 | 2016-02-03 | 鞍钢股份有限公司 | Production method for medium-carbon chromium-bearing cold heading steel wire rod |
| CN105316573A (en) * | 2014-06-23 | 2016-02-10 | 鞍钢股份有限公司 | 80-grade tire cord steel wire rod being suitable for acidic-pickling descaling and production method of same |
| CN105312525A (en) * | 2014-07-16 | 2016-02-10 | 鞍钢股份有限公司 | Method for relieving 40 Cr cold heading steel wire rod pattern segregation |
| CN105483557A (en) * | 2014-09-26 | 2016-04-13 | 鞍钢股份有限公司 | Steel wire rod for 80 grade core thread external winding wire and manufacturing method of steel wire rod |
-
2016
- 2016-05-18 CN CN201610329364.3A patent/CN107400823B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103014524A (en) * | 2012-12-05 | 2013-04-03 | 南京钢铁股份有限公司 | Preparation method of needle steel |
| CN103882313A (en) * | 2012-12-21 | 2014-06-25 | 鞍钢股份有限公司 | Wire rod for ultrahigh-strength fine cutting steel wire and producing method thereof |
| CN105296865A (en) * | 2014-06-09 | 2016-02-03 | 鞍钢股份有限公司 | Production method for medium-carbon chromium-bearing cold heading steel wire rod |
| CN105316573A (en) * | 2014-06-23 | 2016-02-10 | 鞍钢股份有限公司 | 80-grade tire cord steel wire rod being suitable for acidic-pickling descaling and production method of same |
| CN105312525A (en) * | 2014-07-16 | 2016-02-10 | 鞍钢股份有限公司 | Method for relieving 40 Cr cold heading steel wire rod pattern segregation |
| CN104213033A (en) * | 2014-09-03 | 2014-12-17 | 马钢(集团)控股有限公司 | 60-steel hot rolling coil rod with high strength and high plasticity and production method thereof |
| CN105483557A (en) * | 2014-09-26 | 2016-04-13 | 鞍钢股份有限公司 | Steel wire rod for 80 grade core thread external winding wire and manufacturing method of steel wire rod |
| CN104451420A (en) * | 2014-12-15 | 2015-03-25 | 天津冶金集团中兴盛达钢业有限公司 | Low-temperature resistant steel strand suitable for liquefied natural gas engineering and production method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 周琳: "《中国长材轧制技术与装备》", 30 June 2014 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109957728A (en) * | 2017-12-14 | 2019-07-02 | 鞍钢股份有限公司 | A kind of 800MPa grades of fastener weather-proof the cold heading steel and its production method |
| CN109957728B (en) * | 2017-12-14 | 2021-02-23 | 鞍钢股份有限公司 | Weather-resistant cold heading steel wire rod for 800 MPa-level fastener and production method thereof |
| CN110624951A (en) * | 2019-08-27 | 2019-12-31 | 江苏省沙钢钢铁研究院有限公司 | Production method of high-strength cord steel square billet |
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| CN107400823B (en) | 2019-02-26 |
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