CN101481772A - High-carbon steel wire for superfine steel wire and manufacturing method thereof - Google Patents
High-carbon steel wire for superfine steel wire and manufacturing method thereof Download PDFInfo
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Abstract
The invention discloses a high carbon steel wire used for an ultrathin steel wire and a manufacturing method thereof. The wire has the following compositions in terms of weight percentage: 0.60 to 1.2 of C, 0.10 to 0.50 of Si, 0.01 to 0.60 of Mn, no more than 0.020 of P, no more than 0.020 of S, no more than 0.002 of Ti, no more than 0.005 of Al, no more than 0.006 of N and Fe and the balance of inevitable impurities. The manufacturing method comprises the following steps: smelting, molten iron desulfurisation and converter top and bottom blowing are carried out by adopting an ultrapure steel technique, ladle argon blowing refining and external refining are carried out by adopting low-alkalinity steel slag with 0.5 to 1.6 of CaO/SiO2; square billet is formed by casting; austenitizing with the temperature of 750 DEG C to 850 DEG C is carried out on the square billet by using a heating furnace; control rolling and control cooling treatment is carried out on the high speed wire; the rolling temperature is controlled to be 750 to 900 DEG C; and finally the wire is manufactured. The wire can effectively avoid the filament breakage in the drawing technique, and the drawn filament is not broken at least when drawn for more than 1,200,000 meters; and the wire can produce ultrathin steel wire, which has the diameter of less than 0.50 mm and has high strength and high toughness, and meets the requirements of automotive and rubber industries and the construction of roads and bridges.
Description
Technical field
The present invention relates to be used for the wire rod that steel wire is produced in drawing in the iron and steel metallurgical industry, refer to a kind of high-carbon steel wire for superfine steel wire and manufacture method thereof particularly.
Background technology
Along with the fast development of automobile, rubber industry and road, bridge construction, the demand of high strength, high-tenacity super fine steel wire also is significantly ascendant trend.At present, each iron and steel metallurgy enterprise generally adopts carbon content to produce the product of these special purposes greater than 0.60% carbon steel wire rod with high drawing process both at home and abroad, this technology has that production cost is low, the tangible advantage of economic benefit, has obtained promotion and application widely.
The diameter general requirement of fine steel wire is less than 0.50mm, produce fine steel wire and will pass through the cold drawn distortion of successive, original wire rod is pulled to the filament of different size diameter, and improve its intensity by work hardening, steel wire after the drawing carries out twisting by several incorporated monofilaments together, and the twisted wire of making can be used for significant points such as tire, bridge.Because wire rod will pass through drawing, bending, torsional deformation in the cold working process, so require wire rod to have good inner quality, work in-process can not fracture of wire, particularly reach at 96% o'clock at the cold-drawn draft, require not fracture of wire of drawing monofilament 100 myriametres, as seen the specification of quality to wire rod is very harsh.
The principal element that influences the wire drawing performance is the plasticity of material, and it depends on the composition and the size of inclusion in the wire rod to a great extent.The applicant by to fine steel wire with wire rod fracture of wire analysis of phenomenon in drawing process, find to produce the Ti that exists in the reason of fracture of wire and the wire rod (C, N) be mingled with relevant.Drawing Ti (C when dialling from this specification sheets traditional carbon steel wire rod with high shown in Figure 1, N) particle causes that 500 of crackle shows the microstructure synoptic diagram as can be seen, because the existence of this type impurity is arranged in the wire rod, destroyed the matrix of organizing of wire rod, cause the quality of product and qualification rate all to decline to a great extent.
Ti (C in the wire rod, N) particle is the mixture of titanium nitride TiN and titanium carbide TiC, Ti (C from this specification sheets traditional carbon steel wire rod with high shown in Figure 2, N) 5000 of particle morphology show the microstructure synoptic diagram as can be seen, Ti (C in the tradition carbon steel wire rod with high, N) size of particles generally is greater than 10 μ m, and titanium is that inclusion is of a size of 12.39 μ m among the figure.Production practice show that as long as inclusion size in the fine steel wire can cause steel wire brittle rupture in the course of processing greater than 2% of processed steel wire diameter.The solubleness of TiN and TiC is less, under certain thermodynamic condition, often can see in the molten steel that separating out a large amount of Polygons Ti is the thing particle, and high temperature can promote that the Polygons Ti that separates out is that the thing particle is grown up in process of setting.The precipitate of analyzing in the process of setting has very important significance, and it can help the scientific research personnel to explore the optimum controling method of high-carbon steel wire for superfine steel wire.
Studies show that of past, the original wire rod of the fine steel wire of domestic iron and steel enterprises production is at present all carried out with reference to GB/T4354 " highquality carbon steel wire rod " standard, does not wherein propose Ti content and Ti in the steel (C, the requirement that N) is mingled with.Publication number is that the Chinese invention patent ublic specification of application of CN1251865A has been introduced high wire rod of a kind of drawability and manufacture method thereof, and C content is 0.4～0.65% in the chemical ingredients of this wire rod, illustrates that it is the medium carbon steel wire rod; Ti content≤0.02%, but its objective is the effect of bringing into play boron to greatest extent, reduce ferrite and martensitic separating out.Publication number is the Chinese invention patent ublic specification of application of CN1405350A high-tensile steel wires of having introduced a kind of anti-strain aging embrittlement and resisting longitudinal crackle and preparation method thereof, though the wire rod that it is used to make high-tensile steel wires also is a high carbon steel, but the control requirement to Ti, N content in the steel is not proposed wherein, also (C N) is not mingled with the requirement that proposes control to Ti in the steel.With regard to high-carbon steel wire for superfine steel wire, the research of little this aspect is reported both at home and abroad at present, and when adopting existing carbon steel wire rod with high to produce the steel wire of ultra-fine specification, because Ti (C in the steel, N) be mingled with, the phenomenon that causes fracture of wire in drawing process happens occasionally, and this has become the difficult problem that scientific and technical personnel need to be resolved hurrily.
Summary of the invention
Purpose of the present invention is exactly to provide a kind of carbon degree greater than 0.60% high-carbon steel wire for superfine steel wire and manufacture method thereof.Adopt this carbon steel wire rod with high can effectively avoid fracture of wire phenomenon in drawing process, can produce diameter less than 0.50mm, the fine steel wire that has certain intensity and have high tenacity, to satisfy the needs of automobile, rubber industry and road, bridge construction.
For achieving the above object, the present invention is that (C, N) separating out of inclusion finally obtained a kind of high-carbon steel wire for superfine steel wire by Ti in the control steel on the thing thermodynamics basis of separating out at further investigation steel Ti in process of setting.The Chemical Composition of this high-carbon steel wire for superfine steel wire percentage ratio is by weight counted C:0.60～1.2, Si:0.10～0.50, Mn:0.10～0.60, P≤0.020, S≤0.020, Ti≤0.002, Al≤0.005, N≤0.006, and surplus is Fe and inevitably is mingled with.
In the above-mentioned high-carbon steel wire for superfine steel wire, its preferable Chemical Composition percentage ratio is by weight counted C:0.70～0.85, Si:0.15～0.20, Mn:0.40～0.60, P≤0.020, S≤0.015, Ti≤0.0015, Al≤0.005, N≤0.006, and surplus is Fe and inevitably is mingled with.
The manufacture method of above-mentioned high-carbon steel wire for superfine steel wire, comprise the steps: 1) by ultra-clean steel technology smelt, 2) desulfurizing iron, 3) converter top bottom blowing, 4) ladle argon-blown refining, 5) external refining, 6) pour into square billet, 7) the process furnace austenitizing handles, 8) the high-speed rod controlled rolling and controlled cooling handles, and finally makes wire rod.Wherein: in step 4) and step 5), the concise employing of molten steel CaO/SiO
2=0.5～1.6 low basicity slag, so that slag has good mobility, the Ti of being convenient to get rid of in the steel is an inclusion; In step 7), the temperature that the square billet austenitizing is handled is controlled at 750～850 ℃ scope, and lower austenitizing temperature can suppress growing up of small-particle inclusion; In step 8), the rolling temperature of high-speed rod is controlled at 750～900 ℃ scope, and its effect also is by the low temperature controlled rolling, suppresses growing up of small-particle inclusion.
Further, in above-mentioned steps 5) in, the better argon flow when the molten steel Argon stirs is that 30～300l/min, best argon flow are 60～180l/min; Preferable churning time is that 30～100min, best churning time are 40～80min.By the appropriate combination of argon blowing rate and churning time, can significantly improve the Molten Steel Flow state, quicken the removal be mingled with and separate.
Further, in above-mentioned steps 4) and step 5) in, the concise employing of molten steel CaO/SiO
2=0.8～1.5 low basicity slag; In above-mentioned steps 7) in, the optimum temps that the square billet austenitizing is handled is controlled at 780～820 ℃; In above-mentioned steps 8) in, the best rolling temperature of high-speed rod is controlled at 800～870 ℃.By the synergy of above-mentioned optimal processing parameter, can be that (C N) controls to minimum degree to precipitate Ti with Ti in the steel.
It is the thermodynamic study of inclusion that result of the present invention at first is based on Ti in the molten steel.Molten steel may be separated out in process of setting contains that titanium inclusion is TiN, TiC, (C N), analyzes the content W of Ti, N, C in the molten steel to Ti
Ti, W
N, W
C, can obtain the Changing Pattern of the actual activity product of TiN, TiC.Suppose and separate out TiN and TiC in the solidification of molten steel process separately, represent with chemical equation:
[Ti]+[N]＝TiN
(S)
ΔG
0 (TiN)＝-291000+107.9T?J/mol (1-1)
[Ti]+[C]＝TiC
(S)
ΔG
0 (TiC)＝-166483+93.11T?J/mol (1-2)
[Ti], [N], [C] are respectively Ti, N, the C in the steel, TiN in the formula
(S)And TiC
(S)Be respectively TiN and TiC in the slag, Δ G
0 (TiN)With Δ G
0 (TiC)Be respectively the standard Gibbs energy of TiN and TiC, T is a temperature.
Q
TiN＝1.48(1-g)
-0.7·(1-0.52g)
-1W
NW
Ti (1-3)
Q
TiC＝1.45(1-g)
-0.7·(1-0.7g)
-1W
CW
Ti (1-4)
Q in the formula
TiNAnd Q
TiCBe respectively the actual activity product of TiN, TiC, g is the solidification rate of steel, W
Ti, W
N, W
CBe respectively the mass percent of Ti, N, C element.
From learning: the process of setting of molten steel, work as W to above-mentioned thermodynamics analog calculation result's analysis
TiWhen content is higher, W
NEven be reduced to micro content, still might separate out the TiN inclusion.Otherwise, then can avoid solidifying and separate out the TiN inclusion.In like manner, also can avoid solidifying and separate out the TiC inclusion.Thus, can pass through to the qualification of Chemical Composition in the steel and to slag performance, austenitizing temperature and rod rolling temperature controlling in steel-making, cast steel and the operation of rolling, effectively reduce TiN, TiC and Ti (C, separating out N), and it is controlled in the size range that needs.
The mechanism of action of each alloy ingredient is as follows in the high-carbon steel wire for superfine steel wire of the present invention:
Carbon among the present invention (C) content is 0.60～1.20%, and carbon is most important component in the steel, and carbon content directly determines its intensity and plasticity.Under cold drawn state, the tensile strength of steel improves constantly along with the increase of carbon content, plasticity reduces along with the increase of carbon content.Carbon content is controlled in this scope, can guarantees that prepared fine steel wire finished product satisfies the requirement with certain intensity and higher toughness simultaneously.
Silicon among the present invention (Si) content is 0.10～0.50%, and silicon adds in the steel with the ferrosilicon form as a kind of reductor, can eliminate the detrimentally affect that FeO is mingled with, and steel are played a part even compact.The rising of silicone content can obviously improve the elastic limit of steel wire, but plasticity, toughness and the ductility of steel wire are obviously reduced.
Manganese among the present invention (Mn) content is 0.10～0.60%, and manganese also is the good reductor of steel-making, smelts the manganese sulfide, the manganese oxide that generate in the reaction the cold drawn performance of wire rod is not produced harmful effect, and manganese becomes MnS can also alleviate the deleterious effect of sulphur with the sulfuration symphysis.Manganese can also increase the perlite relative quantity, and perlite is attenuated.So manganese content suitably increase can make the intensity of steel wire and hardness improve, yield strength and relative reduction in area also increase to some extent.The manganese major part is dissolved in the ferrite, forms substitutional solid solution, and makes the ferrite carbonization.Manganese can also increase austenitic stability, reduces the critical transition temperature of steel.Manganese can also increase the superheated susceptivity of steel simultaneously, and crystal grain is grown up easily when making thermal treatment, influences the impelling strength of steel.
Phosphorus among the present invention (P) content≤0.020%, sulphur (S) content≤0.020%.Phosphorus in steel, have cause segregation easily, worsen welding property, significantly reduce steel low-temperature impact toughness, improve disadvantageous effect such as brittle transition temperature.Sulphur easily combines generation MnS and is mingled with manganese, sulphur also influences the low-temperature impact toughness of steel.Therefore, the present invention reduce as far as possible phosphorus, element sulphur to rigidity can disadvantageous effect, by molten iron being carried out means such as dark desulfurization pre-treatment, vacuum-treat, control phosphorus, sulphur content, thereby alleviate its disadvantageous effect.
The present invention selects titanium (Ti) content≤0.002%, and titanium is a kind of intensive carbide and nitride forming element, along with the increase of titanium content, and the corresponding reduction fatigue lifetime of steel.It has been generally acknowledged that: when titanium content in the steel was very low, oxygen level played a major role; When oxygen level is lower, its titanium nitride is separated out at solid-liquid two-phase region, has at this moment just become titanium content and has played a major role, and the quality of steel is had very adverse influence, thus the present invention titanium content is limited is very necessary.
Aluminium among the present invention (Al) content≤0.005%., aluminium is a kind of effective reductive agent, aluminium forms Al
2O
3, nonmetal owing to containing, so will reduce the ductility of steel.For this reason, the present invention requires to control aluminium content, thereby alleviates its disadvantageous effect.
Nitrogen among the present invention (N) content≤0.006%, in the time of 590 ℃, the solubleness maximum of nitrogen in ferrite is about 0.1%, and in room temperature with slightly under the high-temperature, nitrogen is gradually with Fe subsequently
4The N form is separated out, and the intensity of steel and hardness are improved, and plasticity and toughness reduce.In addition, the rising of nitrogen in the molten steel is with separating out of aggravation titanium nitride, so the present invention is controlled at nitrogen content in the very micro-scope.
The invention has the advantages that: Ti is that the content of precipitate particle is few in the designed high-carbon steel wire for superfine steel wire, and size has good cold-forming property less than 10 μ m.When making diameter less than the ultra-fine specification wire of 0.50mm, only need to adopt suitable thermal treatment measure, just can simplify drawing process, significantly enhance productivity and lumber recovery with it.Actual detected shows: adopt more than carbon steel wire rod with high drawing monofilament 119 myriametres of the present invention not fracture of wire at least, and the fine steel wire of obtained all size has good intensity and good toughness.
Description of drawings
Fig. 1 for traditional carbon steel wire rod with high draw Ti when dialling (C, N) particle causes that 500 of crackle shows the microstructure synoptic diagram;
Fig. 2 is that (C N) 5000 of particle morphology shows the microstructure synoptic diagram, and wherein titanium is that inclusion is of a size of 12.39 μ m for Ti in traditional carbon steel wire rod with high;
Fig. 3 is that (C N) 500 of particle morphology shows the microstructure synoptic diagram, and wherein titanium is that inclusion is of a size of 2.69 μ m for Ti in a kind of carbon steel wire rod with high of the present invention;
Fig. 4 is that (C N) 500 of particle morphology shows the microstructure synoptic diagram, and wherein titanium is that inclusion is of a size of 2.07 μ m for Ti in the another kind of carbon steel wire rod with high of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments high-carbon steel wire for superfine steel wire of the present invention and manufacture method thereof are described in further detail:
Ti in Fig. 1, the traditional carbon steel wire rod with high shown in Figure 2 (C, N) (C, N) partly describe in detail, repeats no more in this for the crackle microstructure that causes of particle and Ti by the pattern microstructure background technology in front of particle.And the Ti among Fig. 3, carbon steel wire rod with high of the present invention shown in Figure 4 (C, N) explanation among embodiment 3 that the microstructure of particle morphology will be below and the embodiment 4.
Embodiment 1:
A kind of high-carbon steel wire for superfine steel wire, its Chemical Composition percentage ratio are by weight counted C:0.61, Si:0.48, Mn:0.60, P:0.020, S:0.019, Ti:0.0020, Al:0.005, N:0.0059, and surplus is Fe and inevitably is mingled with.
The manufacture method of this carbon steel wire rod with high, comprise the steps: 1) by ultra-clean steel technology smelt, 2) desulfurizing iron, 3) converter top bottom blowing, 4) ladle argon-blown refining, 5) external refining, 6) pour into square billet, 7) the process furnace austenitizing handles, 8) the high-speed rod controlled rolling and controlled cooling handles, and finally makes wire rod.Wherein: in step 4) and step 5), the concise employing of molten steel CaO/SiO
2=1.6 low basicity slag; In step 5), the argon flow that the molten steel Argon stirs is that 45l/min, churning time are 45min; In step 7), the temperature that the square billet austenitizing is handled is 750 ℃; In step 8), high-speed rod to go into final rolling temperature be 800 ℃, go out final rolling temperature is that 850 ℃, laying temperature are 850 ℃, be rolled into the wire rod that specification is ф 6.5mm.
By the prepared carbon steel wire rod with high sample of metallurgical analysis, do not find that titanium is an inclusion.Its cold drawing is produced specification when being the steel wire of ф 0.15mm, and total draught is 98.3% in the journey carefully being pulled through, and experiment drawing total length is 144 myriametres, does not have invar yarn quality problem and produces the fracture of wire phenomenon, and its tensile strength is stable, and test value is 174N/mm.
Embodiment 2:
A kind of high-carbon steel wire for superfine steel wire, its Chemical Composition percentage ratio are by weight counted C:0.70, Si:0.20, Mn:0.60, P:0.020, S:0.015, Ti:0.0015, Al:0.005, N:0.0058, and surplus is Fe and inevitably is mingled with.
The manufacture method of this carbon steel wire rod with high, comprise the steps: 1) by ultra-clean steel technology smelt, 2) desulfurizing iron, 3) converter top bottom blowing, 4) ladle argon-blown refining, 5) external refining, 6) pour into square billet, 7) the process furnace austenitizing handles, 8) the high-speed rod controlled rolling and controlled cooling handles, and finally makes wire rod.Wherein: in step 4) and step 5), the concise employing of molten steel CaO/SiO
2=0.5 low basicity slag; In step 5), the argon flow that the molten steel Argon stirs is that 35l/min, churning time are 60min; In step 7), the temperature that the square billet austenitizing is handled is 780 ℃; In step 8), high-speed rod to go into final rolling temperature be 800 ℃, go out final rolling temperature is that 870 ℃, laying temperature are 820 ℃, be rolled into the wire rod that specification is ф 6.5mm.
By the prepared carbon steel wire rod with high sample of metallurgical analysis, do not find that titanium is an inclusion.Its cold drawing is produced specification when being the steel wire of ф 0.17mm, and total draught is 98% in the journey carefully being pulled through, and experiment drawing total length is 131 myriametres, does not have invar yarn quality problem and produces the fracture of wire phenomenon, and its tensile strength is stable, and test value is 194N/mm.
Embodiment 3:
A kind of high-carbon steel wire for superfine steel wire, its Chemical Composition percentage ratio are by weight counted C:0.85, Si:0.15, Mn:0.40, P:0.015, S:0.007, Ti:0.0011, Al:0.004, N:0.0050, and surplus is Fe and inevitably is mingled with.
The manufacture method of this carbon steel wire rod with high, comprise the steps: 1) by ultra-clean steel technology smelt, 2) desulfurizing iron, 3) converter top bottom blowing, 4) ladle argon-blown refining, 5) external refining, 6) pour into square billet, 7) the process furnace austenitizing handles, 8) the high-speed rod controlled rolling and controlled cooling handles, and finally makes wire rod.Wherein: in step 4) and step 5), the concise employing of molten steel CaO/SiO
2=1.5 low basicity slag; In step 5), the argon flow that the molten steel Argon stirs is that 300l/min, churning time are 30min; In step 7), the temperature that the square billet austenitizing is handled is 820 ℃; In step 8), high-speed rod to go into final rolling temperature be 850 ℃, go out final rolling temperature is that 870 ℃, laying temperature are 850 ℃, be rolled into the wire rod that specification is ф 5.5mm.
By the prepared carbon steel wire rod with high sample of metallurgical analysis, it is inclusion that discovery has a little amount of titanium, but titanium is the size of inclusion all to be controlled at below the 10 μ m, Fig. 3 is the Ti (C in this carbon steel wire rod with high sample, N) 500 of particle morphology show the microstructure synoptic diagram, wherein titanium is that inclusion is of a size of 2.69 μ m.Its cold drawing is produced specification when being the steel wire of ф 0.25mm, and total draught is 97% in the journey carefully being pulled through, and experiment drawing total length is 119 myriametres, does not have invar yarn quality problem and produces the fracture of wire phenomenon, and its tensile strength is stable, and test value is 234N/mm.
Embodiment 4:
A kind of high-carbon steel wire for superfine steel wire, its Chemical Composition percentage ratio are by weight counted C:0.90, Si:0.18, Mn:0.30, P:0.010, S:0.005, Ti:0.0005, Al:0.002, N:0.0048, and surplus is Fe and inevitably is mingled with.
The manufacture method of this carbon steel wire rod with high, comprise the steps: 1) by ultra-clean steel technology smelt, 2) desulfurizing iron, 3) converter top bottom blowing, 4) ladle argon-blown refining, 5) external refining, 6) pour into square billet, 7) the process furnace austenitizing handles, 8) the high-speed rod controlled rolling and controlled cooling handles, and finally makes wire rod.Wherein: in step 4) and step 5), the concise employing of molten steel CaO/SiO
2=0.8 low basicity slag; In step 5), the argon flow that the molten steel Argon stirs is that 300l/min, churning time are 50min; In step 7), the temperature that the square billet austenitizing is handled is 755 ℃; In step 8), high-speed rod to go into final rolling temperature be 800 ℃, go out final rolling temperature is that 870 ℃, laying temperature are 880 ℃, be rolled into the wire rod that specification is ф 5.5mm.
By the prepared carbon steel wire rod with high sample of metallurgical analysis, it is inclusion that discovery has a little amount of titanium, but titanium is the size of inclusion all to be controlled at below the 10 μ m, Fig. 4 is the Ti (C in this carbon steel wire rod with high sample, N) 500 of particle morphology show the microstructure synoptic diagram, wherein titanium is that inclusion is of a size of 2.07 μ m.Its cold drawing is produced specification when being the steel wire of ф 0.38mm, and total draught is 96% in the journey carefully being pulled through, and experiment drawing total length is 145 myriametres, does not have invar yarn quality problem and produces the fracture of wire phenomenon, and its tensile strength is stable, and test value is 304N/mm.
Embodiment 5:
A kind of high-carbon steel wire for superfine steel wire, its Chemical Composition percentage ratio are by weight counted C:1.05, Si:0.10, Mn:0.15, P:0.009, S:0.005, Ti:0.0010, Al:0.005, N:0.0038, and surplus is Fe and inevitably is mingled with.
The manufacture method of this carbon steel wire rod with high, comprise the steps: 1) by ultra-clean steel technology smelt, 2) desulfurizing iron, 3) converter top bottom blowing, 4) ladle argon-blown refining, 5) external refining, 6) pour into square billet, 7) the process furnace austenitizing handles, 8) the high-speed rod controlled rolling and controlled cooling handles, and finally makes wire rod.Wherein: in step 4) and step 5), the concise employing of molten steel CaO/SiO
2=1.1 low basicity slag; In step 5), the argon flow that the molten steel Argon stirs is that 235l/min, churning time are 47min; In step 7), the temperature that the square billet austenitizing is handled is 780 ℃; In step 8), high-speed rod to go into final rolling temperature be 800 ℃, go out final rolling temperature is that 880 ℃, laying temperature are 900 ℃, be rolled into the wire rod that specification is ф 5.0mm.
By the prepared carbon steel wire rod with high sample of metallurgical analysis, do not find that titanium is an inclusion.Its cold drawing is produced specification when being the steel wire of ф 0.45mm, and total draught is 96% in the journey carefully being pulled through, and experiment drawing total length is 160 myriametres, does not have invar yarn quality problem and produces the fracture of wire phenomenon, and its tensile strength is stable, and test value is 355N/mm.
Claims (8)
1. high-carbon steel wire for superfine steel wire, it is characterized in that: the Chemical Composition in this carbon steel wire rod with high percentage ratio is by weight counted C:0.60～1.2, Si:0.10～0.50, Mn:0.10～0.60, P≤0.020, S≤0.020, Ti≤0.002, Al≤0.005, N≤0.006, and surplus is Fe and inevitably is mingled with.
2. high-carbon steel wire for superfine steel wire according to claim 1, it is characterized in that: the Chemical Composition in this carbon steel wire rod with high percentage ratio is by weight counted C:0.70～0.85, Si:0.15～0.20, Mn:0.40～0.60, P≤0.020, S≤0.015, Ti≤0.0015, Al≤0.005, N≤0.006, and surplus is Fe and inevitably is mingled with.
3. the manufacture method of the described high-carbon steel wire for superfine steel wire of claim 1, comprise the steps: 1) by ultra-clean steel technology smelt, 2) desulfurizing iron, 3) converter top bottom blowing, 4) ladle argon-blown refining, 5) external refining, 6) pour into square billet, 7) the process furnace austenitizing handles, 8) the high-speed rod controlled rolling and controlled cooling handles, finally make wire rod, it is characterized in that: in described step 4) and the step 5), the concise employing of molten steel CaO/SiO
2=0.5～1.6 low basicity slag; In the described step 7), the temperature that the square billet austenitizing is handled is 750～850 ℃; In the described step 8), the rolling temperature of high-speed rod is 750～900 ℃.
4. the manufacture method of high-carbon steel wire for superfine steel wire according to claim 3 is characterized in that: in the described step 5), the argon flow when the molten steel Argon stirs is that 30～300l/min, churning time are 30～100min.
5. the manufacture method of high-carbon steel wire for superfine steel wire according to claim 4 is characterized in that: in the described step 5), the argon flow when the molten steel Argon stirs is that 60～180l/min, churning time are 40～80min.
6. according to the manufacture method of claim 3 or 4 or 5 described high-carbon steel wire for superfine steel wire, it is characterized in that: in described step 4) and the step 5), the concise employing of molten steel CaO/SiO
2=0.8～1.5 low basicity slag.
7. according to the manufacture method of claim 3 or 4 or 5 described high-carbon steel wire for superfine steel wire, it is characterized in that: in the described step 7), the temperature that the square billet austenitizing is handled is 780～820 ℃.
8. according to the manufacture method of claim 3 or 4 or 5 described high-carbon steel wire for superfine steel wire, it is characterized in that: in the described step 8), the rolling temperature of high-speed rod is 800～870 ℃.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100608158A CN101481772B (en) | 2009-02-20 | 2009-02-20 | High-carbon steel wire for superfine steel wire and manufacturing method thereof |
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|---|---|---|---|
| CN2009100608158A CN101481772B (en) | 2009-02-20 | 2009-02-20 | High-carbon steel wire for superfine steel wire and manufacturing method thereof |
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| CN102268596A (en) * | 2010-06-07 | 2011-12-07 | 鞍钢股份有限公司 | High-carbon steel wire rod for producing thin steel wire |
| WO2011160483A1 (en) * | 2010-06-23 | 2011-12-29 | 宝山钢铁股份有限公司 | Method for controlling titanium content in ultra-low carbon killed steel |
| CN102409228A (en) * | 2010-09-20 | 2012-04-11 | 鞍钢股份有限公司 | High-strength high-carbon steel wire rod and production method thereof |
| CN102751046A (en) * | 2012-07-10 | 2012-10-24 | 江苏中天科技股份有限公司 | Extra-high-strength aluminium-clad steel wire production method |
| CN102784799A (en) * | 2012-06-15 | 2012-11-21 | 首钢总公司 | Hot rolling method for reducing open grain structures of low-carbon steel wire rod |
| CN103409682A (en) * | 2013-08-26 | 2013-11-27 | 武汉钢铁(集团)公司 | Method for producing superfine steel wires from high-carbon steel wire rod |
| CN107245657A (en) * | 2017-06-24 | 2017-10-13 | 武汉钢铁有限公司 | A kind of strong elevator wire rope steel of superelevation and production method |
| CN111761242A (en) * | 2020-07-01 | 2020-10-13 | 苏闽(张家港)新型金属材料科技有限公司 | Welding process of superfine super-strong high-carbon steel wire with diameter less than or equal to 0.4mm |
| CN111979476A (en) * | 2020-06-05 | 2020-11-24 | 鞍钢股份有限公司 | Wire for automobile control line and manufacturing method thereof |
| CN114888115A (en) * | 2022-04-28 | 2022-08-12 | 湖南华菱湘潭钢铁有限公司 | Production method of hot-rolled cold-heading steel wire rod |
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| CN103422019A (en) * | 2013-07-25 | 2013-12-04 | 张家港市胜达钢绳有限公司 | Method for manufacturing ultra-fine steel wire |
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| CN102268596A (en) * | 2010-06-07 | 2011-12-07 | 鞍钢股份有限公司 | High-carbon steel wire rod for producing thin steel wire |
| WO2011160483A1 (en) * | 2010-06-23 | 2011-12-29 | 宝山钢铁股份有限公司 | Method for controlling titanium content in ultra-low carbon killed steel |
| US8882880B2 (en) | 2010-06-23 | 2014-11-11 | Baoshan Iron & Steel Co., Ltd. | Method for controlling extremely low Ti in extra low carbon AlSi-killed steel |
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| CN102784799A (en) * | 2012-06-15 | 2012-11-21 | 首钢总公司 | Hot rolling method for reducing open grain structures of low-carbon steel wire rod |
| CN102751046B (en) * | 2012-07-10 | 2014-03-12 | 江苏中天科技股份有限公司 | Extra-high-strength aluminium-clad steel wire production method |
| CN102751046A (en) * | 2012-07-10 | 2012-10-24 | 江苏中天科技股份有限公司 | Extra-high-strength aluminium-clad steel wire production method |
| CN103409682A (en) * | 2013-08-26 | 2013-11-27 | 武汉钢铁(集团)公司 | Method for producing superfine steel wires from high-carbon steel wire rod |
| CN103409682B (en) * | 2013-08-26 | 2016-03-30 | 武汉钢铁(集团)公司 | The method of high-carbon carbon steel wire production fine steel wire |
| CN107245657A (en) * | 2017-06-24 | 2017-10-13 | 武汉钢铁有限公司 | A kind of strong elevator wire rope steel of superelevation and production method |
| CN111979476A (en) * | 2020-06-05 | 2020-11-24 | 鞍钢股份有限公司 | Wire for automobile control line and manufacturing method thereof |
| CN111761242A (en) * | 2020-07-01 | 2020-10-13 | 苏闽(张家港)新型金属材料科技有限公司 | Welding process of superfine super-strong high-carbon steel wire with diameter less than or equal to 0.4mm |
| CN111761242B (en) * | 2020-07-01 | 2022-03-25 | 苏闽(张家港)新型金属材料科技有限公司 | Welding process of superfine super-strong high-carbon steel wire with diameter less than or equal to 0.4mm |
| CN114888115A (en) * | 2022-04-28 | 2022-08-12 | 湖南华菱湘潭钢铁有限公司 | Production method of hot-rolled cold-heading steel wire rod |
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| CN101481772B (en) | 2010-10-20 |
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