CN1312310C - Deformed wire for reinforcing land optical fiber cable - Google Patents
Deformed wire for reinforcing land optical fiber cable Download PDFInfo
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- CN1312310C CN1312310C CNB038082462A CN03808246A CN1312310C CN 1312310 C CN1312310 C CN 1312310C CN B038082462 A CNB038082462 A CN B038082462A CN 03808246 A CN03808246 A CN 03808246A CN 1312310 C CN1312310 C CN 1312310C
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 13
- 230000003014 reinforcing effect Effects 0.000 title abstract 2
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 14
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 13
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 12
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 12
- 229910000859 α-Fe Inorganic materials 0.000 claims abstract description 11
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 9
- 230000003287 optical effect Effects 0.000 claims description 27
- 229910001567 cementite Inorganic materials 0.000 claims description 21
- KSOKAHYVTMZFBJ-UHFFFAOYSA-N iron;methane Chemical compound C.[Fe].[Fe].[Fe] KSOKAHYVTMZFBJ-UHFFFAOYSA-N 0.000 claims description 21
- 238000005096 rolling process Methods 0.000 claims description 11
- 238000005204 segregation Methods 0.000 claims description 11
- 229910052748 manganese Inorganic materials 0.000 claims description 8
- 239000012535 impurity Substances 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 abstract description 13
- 239000010959 steel Substances 0.000 abstract description 13
- 229910052796 boron Inorganic materials 0.000 abstract description 6
- 229910052799 carbon Inorganic materials 0.000 abstract description 5
- 229910052804 chromium Inorganic materials 0.000 abstract description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 2
- 238000012545 processing Methods 0.000 description 22
- 230000000052 comparative effect Effects 0.000 description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- 230000000694 effects Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 238000005482 strain hardening Methods 0.000 description 8
- 239000000203 mixture Substances 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 229910000734 martensite Inorganic materials 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 239000006104 solid solution Substances 0.000 description 5
- 230000032683 aging Effects 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000011241 protective layer Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000005275 alloying Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 229910001562 pearlite Inorganic materials 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- 238000005491 wire drawing Methods 0.000 description 3
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 2
- 229910001563 bainite Inorganic materials 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000002939 deleterious effect Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 150000004767 nitrides Chemical class 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000001389 atom probe field ion microscopy Methods 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
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- 239000002245 particle Substances 0.000 description 1
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- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
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- 238000012797 qualification Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
- LRXTYHSAJDENHV-UHFFFAOYSA-H zinc phosphate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O LRXTYHSAJDENHV-UHFFFAOYSA-H 0.000 description 1
- 229910000165 zinc phosphate Inorganic materials 0.000 description 1
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
-
- 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
- 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
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Heat Treatment Of Steel (AREA)
- Insulated Conductors (AREA)
Abstract
A generally sectorial deformed wire for reinforcing a strong land optical fiber cable is produced from a wire for a long high-tensile steel wire excellent in cold workability. The deformed wire is characterized in that it contains 0.40 to 1.1 mass% of C, 0.15 to 1.5 mass% of Si, 0.20 to 1.5 mass% of Mn, and 0.0005 to 0.5 mass% in total of one or more of elements of Cr, Mo, V, Al, Ti, Nb, and B, the carbon equivalent Ceq=C+1/4Si+1/5Mn+4/13Cr satisfies the relations 0.80%<=Ceq<=1.80%, the deformed wire has a ferrite pearite structure or a pearite structure and a tensile strength of 1800 MPa or more, the cross section of the deformed wire is generally sectorial, such deformed wires are combined to form a cable having a circular hollow section and a hollow in which an optical fiber is accommodated.
Description
Technical field
The present invention relates to the optical cable enhanced profile wire of land use.
Background technology
In recent years, because the development of the revolutionary character of I T technology, the optical fiber that is applied to land optical cable is promptly popularized.As the structure of optical cable, for example there is the spy to open flat 5-60956, spy and opens that flat 6-69915, spy open flat 7-49439, the spy opens the structure described in flat 11-23923, the special Willing 2000-310728.
Shown in Figure 1 is a land example using the structure of optical cable, its basic structure is: at the core configuration tension member of optical cable, dispose fiber unit around it, the reinforced pipe of bag fiber unit in the periphery configuration of fiber unit, its periphery is provided with big envelope, armouring enhancement layer, sheath etc.
But such structure is very complicated, and because the cause of messenger wire length of support, electric pole spacing can not increase the weight of optical cable, thereby the reinforced pipe of strengthening optical fiber also is restricted.For this reason, be purpose to improve weather resistance, for example open described in the flat 5-60956 as the spy, fill ceramic powder at the peripheral part of optical cable, perhaps open described in the flat 6-69915 as the spy, the multilayer-wound water sucting belt, but do very bothersomely like this, and cause the cost raising.
As simple in structure, weather resistance and the high cable configuration of water tolerance, put down in writing submarine optical fiber cable as shown in Figure 2 among the special fair 7-65142 and strengthened that use profile wire, this steel wire be that the tensile strength of the usefulness steel wire manufacturing of satisfying Ceq=C+ (Mn+Cr)/5 〉=0.57% is at 1226MPa or the above profile wire that is fan-shaped section.But the maximum value of the tensile strength that this steel wire can reach is the 1520MPa level, is lower than the tensile strength 1800～2000MPa of piano wire.
In recent years, on the market for the transmission capacity that improves optical cable and alleviate the optical cable own wt to lay performance demands more and more higher to improve it, but, in order to improve transmission capacity, even increase the internal diameter of segmental profile wire, reduce the section wall thickness of profile wire, increase the radical of optical fiber, consider from the angle of the intensity of guaranteeing tension member, reduce wall thickness certain limit is also arranged, use the optical cable of the profile wire of fan-shaped section, more and more can not adapt to the market requirement that the requirement that increases year by year improves transmission capacity.
In order to improve the laying performance, requirement alleviates the weight of optical cable itself, adopt the segmental profile wire of intensity in the past, even for weight reduction reduces wall thickness, consider from the angle of guaranteeing enhancement layer intensity, can not reduce wall thickness fully, thereby the effect for solving the market requirement that the requirement that increases year by year reduces the optical cable own wt of this method is very limited.
Summary of the invention
The wire rod that the present invention uses the high-tensile steel wires of the long size of excellent cold-workability exhibiting to use provides intensity high land optical cable enhanced profile wire.
The present invention finishes in order to address the above problem, and main points of the present invention are as follows.
(1) a kind of land optical cable enhanced profile wire, it is characterized in that: % contains C in quality: greater than 0.65% and be no more than 1.1%, Si:0.15～1.5%, Mn:0.20～1.5%, also contain Cr:1.2% or following and (Mn+Cr): 0.2～1.5%, and Mo:0.01～0.1%, V:0.01～0.1%, Al:0.002～0.1%, Ti:0.002～0.1%, Nb:0.001～0.3%, in B:0.0005～0.1% a kind, 2 kinds or above and content add up to 0.0005～0.5%, surplus is Fe and unavoidable impurities, in addition, Ceq=C+1/4Si+1/5Mn+4/13Cr satisfies 0.80%≤Ceq≤1.80%, microstructure is ferrite-pearlitic structure or pearlitic structure, and it is 20/mm or following that the number that crosses the shear zone (shear zone that has gradient with respect to rolling direction) on the L section central axis calculates with the per unit length central axis, and described central shaft and shear zone angulation are in 10～90 ° scope, tensile strength be 1800MPa or more than, cross section is for roughly fan-shaped, the roughly fan-shaped circular hollow section that constitutes receiving optical fiber that lumps together that several are such.
(2) a kind of land optical cable enhanced profile wire, it is characterized in that: % contains C in quality: greater than 0.65% and be no more than 1.1%, Si:0.50～1.5%, Mn:0.20～1.5%, also contain Cr:1.2% or following and (Mn+Cr): 0.2～1.5%, and Mo:0.01～0.1%, V:0.01～0.1%, Al:0.002～0.1%, Ti:0.002～0.1%, Nb:0.001～0.3%, in B:0.0005～0.1% a kind, 2 kinds or above and content add up to 0.0005～0.5%, surplus is Fe and unavoidable impurities, in addition, Ceq=C+1/4Si+1/5Mn+4/13Cr satisfies 0.80%≤Ceq≤1.80%, microstructure is ferrite-pearlitic structure or pearlitic structure, and there is segregation in Si, make in pearlitic structure from cementite and ferritic interface in the 30nm scope of ferritic phase one side, satisfy the Si maximum segregation degree (the overall Si content of maximum Si concentration ÷ in the 30nm scope of ferritic phase one side) 〉=1.1 at cementite/ferrite interface from cementite and ferritic interface, the number that crosses the shear zone (shear zone that has gradient with respect to rolling direction) on the L section central axis is 20/mm or following with the calculating of per unit length central axis, and described central shaft and shear zone angulation are in 10～90 ° scope, tensile strength be 1800MPa or more than, cross section is for roughly fan-shaped, the roughly fan-shaped circular hollow section that constitutes receiving optical fiber that lumps together that several are such.
Description of drawings
Fig. 1 is the cross-sectional view of land optical cable in the past.
Fig. 2 (a) is to use the stereographic map of the submarine optical fiber cable of the roughly segmental profile wire formation Withstand voltage layer of intensity in the past, and Fig. 2 (b) is the cross-sectional view of this submarine optical fiber cable.
Fig. 3 is to use roughly segmental profile wire of the present invention to form the cross-sectional view of the land optical cable of protective layer.
Fig. 4 represents that the Si content of segmental profile wire of TS=2100MPa level and Si exist situation for the roughly influence of the processing characteristics of segmental profile wire in ferrite.
Fig. 5 represents to adopt A P-FIM to measure the example of the Si distribution situation in the pearlitic structure of roughly segmental profile wire of 0.82%C～1.02%Si～0.52%Mn～0.0042%Al composition system.
Fig. 6 (a) and Fig. 6 (b) represent the roughly photo of the L fractography of segmental profile wire.
Fig. 7 (a) and Fig. 7 (b) represent that roughly the segmental profile wire is at the photo of course of processing interrupt line example.
Fig. 8 represents the influence of the angle of crossing shear zone quantity on the L section central axis and shear zone of segmental profile wire roughly for the broken string of segmental profile wire.
Embodiment
Explain the present invention below.
For improving transmission capacity and alleviating the wall thickness that own wt reduces the protective tube of land optical cable, must make this roughly the tensile strength of segmental profile wire reach 1800MPa or more than.
The tensile strength of profile wire is to be determined by the tensile strength of wire raw material wire rods and cold working amount, and when making the segmental profile wire, maximum problem is to break in the course of processing, and main points of the present invention seek not have broken string and high strength exactly.The inventor is through discovering, for example strengthens the roughly segmental profile wire 20～25 of usefulness for the land optical cable shown in the shop drawings 3 and do not break in the course of processing, and control is vital with respect to the shear zone that rolling direction has gradient.For this reason, for example the tensile strength of segmental profile wire roughly be under the situation of 1800MPa total section minification is suppressed at 85% or following in tensile strength be under the situation of 2000MPa total section minification is suppressed at 80% or below be effective.In order to satisfy these conditions, roughly the tensile strength of segmental profile wire is under the situation of 1800MPa, the tensile strength of rolled wire must 1100MPa or more than, roughly the tensile strength of segmental profile wire is under the situation of 2000MPa, the tensile strength of rolled wire must 1200MPa or more than.
In addition, the inventor also finds, roughly the segmental profile wire is at the manufacturing processed interrupt line, is that uncombined carbon and solid solution nomadic nitrogen in steel in the strain aging that causes of solid solution in steel causes owing to heating in the cold working process causes that cementite decomposes.Therefore, in order to suppress to decompose because of the cementite that the processing heating causes, the inventor studies effective interpolation alloying element and optimum addition thereof, the Si amount that found that cementite/ferrite interface existence of adjusting in the ferrite is effective, simultaneously, by the auxiliary alloying element that adds formation carbide such as Cr, Mo, V, Ti, Nb, can further suppress the decomposition of cementite in the cold working process.
In addition, the inventor also finds, in the nitrogen in reducing steel, the nitride that utilizes Mo, Al, Ti, Nb, V, the B nitrogen of solid solution inevitably is fixed up, and can suppress the strain aging that causes because of nitrogen effectively.
Moreover, be that the roughly occasion of segmental profile wire is made in wire raw material wire rods cold working at above-mentioned steel, require these steel to have good intensity and toughness.C, the Si, Mn and the Cr that add in order to reach high-intensity purpose, when its addition increases, often form the tissue that causes cold-forming property to worsen, therefore, hope is limited to these alloying elements high strength and cold-forming property is reached in the optimum scope of equilibrated.
As mentioned above, in the present invention, in order to satisfy the requirement of high strength and good cold-forming property comprehensively, the scope of composition element is limited.The following describes the qualification foundation of these composition ranges.
C：
C content is 0.65% or when following, can not guarantee tensile strength reach 1100MPa or more than, otherwise, its content was above 1.1% o'clock, segregation increases in the continuous casting process, produce little martensite (ミ Network ロ マ Le テ Application サ イ ト), proeutectoid cementite in the rolled wire, make cold-forming property obviously worsen, thereby be defined as the content of C greater than 0.65% and be no more than 1.1%.
Si：
Si has the effect of strengthening wire rod by the solution strengthening effect.Its content can not obtain this effect 0.15% or when following, otherwise, be higher than at 1.5% o'clock, cause toughness to worsen, therefore its content is defined as 0.15～1.5%.
Especially, for reducing the outage in the special-shaped course of processing, as previously described, for the strain aging that suppresses to cause because of C in the cold working process, must suppress the decomposition and the solid solution of C in ferrite of cementite in the cold working process, for this reason, must control the existence of Si, the content that makes Si 0.5～1.5% and in pearlitic structure from cementite and ferritic interface in the 30nm scope of ferritic phase one side, satisfy the Si maximum segregation degree (the overall Si content of maximum Si concentration ÷ in the 30nm scope of ferritic phase one side) 〉=1.1 at cementite/ferrite interface from cementite and ferritic interface.Fig. 4 represents that there be the influence of situation for the processing characteristics of segmental profile wire in the Si content of segmental profile wire and Si in ferritic phase.As long as these parameters within the scope of the invention, just do not break in the course of processing.In addition, the distribution situation of the Si degree of segregation at cementite/ferrite interface for example as shown in Figure 5, can adopt AP-FIM etc. to measure, obtain.
In order to make Si in cementite/ferrite interface segregation effectively, for example can in the limit of not separating out the Coarse pearlite that causes the deterioration of Wire Drawing performance, improve the pearlitic transformation temperature, extend to the time that pearlitic transformation finishes, increase the Si amount that is discharged to ferritic phase one side when cementite is separated out as far as possible.For this reason, the air-cooled speed of cooling after the rod rolling is controlled at 1～10 ℃/second or below be effective.
Mn：
Mn can improve intensity and with the form of sulfide S be fixed, and is the hot short element that suppresses in the rod rolling process, preferably adds within the bounds of possibility.When it contains quantity not sufficient 0.2%, can not S be fixed with the form of sulfide, and the tensile strength that can not guarantee wire rod 1100MPa or more than, otherwise, its content surpasses at 1.5% o'clock, and the hardening capacity of wire rod is too high, produces little martensite sometimes, cause processing characteristics obviously to worsen, thereby Mn content is defined as 0.2～1.5%.
Cr：
Cr has and the identical element of Mn effect, can add Cr and replace a part of Mn.In addition, Cr can also refine pearlite, improves the intensity of wire rod, and in addition as mentioned above, Cr can form carbide, is the element that promotes the cementite stabilization.If Cr content surpass 1.2% and the content of Mn and Cr add up to and surpass 1.5%, will form little martensite, thereby stipulate Cr:1.2% or following and (Cr+Mn): 0.2～1.5%.
Mo, Al, V, Ti, Nb and B:
These elements can both be adjusted the grain fineness number of γ phase, and as previously described, can form carbide, nitride, are to promote the cementite stabilization and the fixing element of solid solution nitrogen.When containing Mo: less than 0.01%, Al: less than 0.002%, V: less than 0.01%, Ti: less than 0.002%, Nb: less than 0.001%, V: less than 0.001%, B: in less than 0.0005% a kind, 2 kinds or above and content add up to when being lower than 0.0005%, can not get above-mentioned effect.When containing Mo: be higher than 0.1%, Al: be higher than 0.1%, V: be higher than 0.1%, Ti: be higher than 0.1%, Nb: be higher than 0.3%, V: be higher than 0.3%, B: be higher than in 0.1% a kind, 2 kinds or above and content and add up to when being higher than 0.5%, above-mentioned effect reaches capacity, and toughness worsens, thereby in regulation Mo:0.01～0.1%, V:0.01～0.1%, Al:0.002～0.1%, Ti:0.002～0.1%, Nb:0.001～0.3%, B:0.0005～0.1% a kind, 2 kinds or above and content add up to 0.0005～0.5%.
The viewpoint that toughness is worsened from P and S, preferably their content separately 0.03% or below.In addition, consider from the angle that suppresses timeliness, wish content with N be suppressed at 0.01% or below.
The intensity of wire raw material wire rods can be determined from the speed of cooling of austenite region according to Ceq (Ceq=C+1/4Si+1/5Mn+4/13Cr) and wire rod.Ceq is high more, speed of cooling is big more, then the intensity of wire rod increases many more, and according to the inventor's research, if Ceq less than 0.80%, just can not obtain having the wire rod of 1100MPa or above intensity, thereby be under 1800MPa or the above situation in the tensile strength of profile wire, regulation Ceq 0.80% or more than.This be because: when Ceq is lower than this numerical value, in order to ensure the intensity of wire rod, the speed of cooling of wire rod must be brought up to high speed, thereby separate out inevitably for deleterious bainite of cold-forming property or martensite.
In addition, Ceq surpasses at 1.80% o'clock, and the hardening capacity of wire rod raises, even adjust the speed of cooling of wire rod, still can separate out for deleterious bainite of cold-forming property or martensite sometimes, causes processing characteristics significantly to worsen, thereby stipulates to be limited to 1.80% on it.
Be processed into the occasion of Round Steel Wire utilizing the wortle drawing, a large amount of formation fiber texture consistent with axial direction due, and when making the segmental profile wire, in general, the roll of segmental pass carries out cold rolling because use has roughly, shown in Fig. 6 (a) and 6 (b), formed and the tissue of axially parallel and the shear zone 28 that has gradient with respect to rolling direction.The pearlite interlaminar spacing of shear zone 28, carefully more much smaller than the pearlitic sheet interlayer spacing consistent with rolling direction, present processing strain concentration of local.Therefore, low around the ductility ratio of shear zone 28, in the worst case, shown in Fig. 7 (a) and 7 (b), in the course of processing be that broken string 31 takes place starting point with the shear zone, in addition, it still causes the roughly reason of the ductility reduction of segmental profile wire own, therefore must reduce its existence as far as possible, can not avoid under the situation of its existence fully, shear zone 28 and central shaft 29 angulations 30 are unlikely become extremely low angle, this point is very important.Low angle means in the rolling process that roughly the distortion situation of segmental external diameter one side and internal diameter one side is widely different, and strain is further concentrated at shear zone, causes ductility to reduce.As shown in Figure 8, the quantity of crossing the shear zone 28 on the L section central axis 29 of segmental profile wire roughly by regulation with the per unit length central axis calculate be 20/mm or following and central shaft and shear zone angulation 30 in 10～90 ° scope, can suppress the broken string in the course of processing.
As suppressing the method that this shear zone 28 produces, for example as previously described, can reduce total section minification by raising and realize along with the intensity of segmental profile wire roughly.But for the wire rod of the line footpath 5.0mm that used in the past, the section minification when reducing cold working is limited.Wire rod for line footpath 5.0mm or following for example 4.5mm, 4.0mm, 3.0mm etc. carries out cold working, makes roughly segmental profile wire, can reduce the section minification.In addition, wire gauge is decided to be 5.0mm or following, and the amount of finish in the rod rolling process increases, and the particle diameter of γ phase becomes tiny thus, can make its refinement reach 8 grades of γ phase grain size numbers or more than, the performance improve effect than reducing total bigger ductility of section minification merely.In addition, as mentioned above, the strain aging of adjusting in Si addition and the inhibition Wire Drawing process also is effective.
Moreover, be to suppress the generation and the control angle 30 of shear zone 28, adjusting upper and lower roll Pass shape, to make roughly the speed of relative movement of segmental external diameter one side and internal diameter one side not want difference too greatly also be effective.In addition, situation shown in Figure 8, though the angle of shear zone satisfies area requirement of the present invention, the radical of shear zone is 24.3/mm of per unit length, has exceeded the scope of the present invention's regulation, thereby has broken.
As for the radical of segmental profile wire roughly, shown in Fig. 3 is circle to be divided into 6 parts roughly segmental shape, but is not limited to be divided into 6 parts, also can be that many cut apart is fan-shaped according to its purposes and working conditions.In addition, consider that from industrial angle preferably about 2～10 is fan-shaped.The optical cable of land usefulness does not require that sleeve pipe has very big resistance to pressure, but requires optical cable to have flexibility, thereby to be divided into the fan-shaped profile wire that 3 parts or above pipe for example be divided into about 4～6 parts be useful.
Embodiment 1
Land optical cable of the present invention strengthens the profile wire of usefulness, for example can be by the following stated manufacturing.The steel billet that will contain 2 tons of the substances of 0.82%C～1.0%Si～0.50%Mn～0.0045%Al (Ceq=1.23) is heated to 1050 ℃, be rolled into the line footpath of 4.5mm then, through about 7 ℃/second air-cooled, make the wire coil that tensile strength is adjusted to 2 tons of the substances of 1300MPa.Then, scale removal carries out the zinc phosphate overlay film and handles, and utilizes the wortle wire drawing to 3.0mm, and being cold-rolled to the thick cross section of 1.8mm with roll is the orthogonal wire rod.Subsequently, roughly fan-shaped in order to form, use has roughly the roll of fan-shaped pass and carries out cold rollingly, can obtain external diameter b:5.2mm, the internal diameter a:2.55mm shown in the land optical cable of Fig. 4, the profile wire 18～20 of thickness t: 1.325mm, tensile strength 1820MPa.Roughly there is not shear zone in this in the microstructure of the L section of segmental profile wire.
The intensity of the composition of wire rod shown in the table 1～table 4 (table 2～table 4 is continuous tables of table 1), Ceq, TS, the processing characteristics when wire rod is processed into segmental profile wire roughly, profile wire, form the number etc. of the profile wire of protective layer.
No.1～31st, example of the present invention, other is a comparative example.According to the present invention, can make the excellent machinability of guaranteeing wire rod, the roughly segmental profile wire that intensity surpasses the 2000MPa level.
Shown in comparative example No.32, when Ceq is lower than scope of the present invention, control total section minification in order to suppress broken string 85% or during following manufacturing, can not guarantee the intensity of 1800MPa or above roughly segmental profile wire.
Shown in comparative example No.33, when C content was higher than scope of the present invention, processing characteristics significantly worsened, and can not stably make roughly segmental profile wire.
Shown in comparative example No.34, when Si content was higher than scope of the present invention, processing characteristics significantly worsened, and can not stably make roughly segmental profile wire.
Shown in comparative example No.35, when (Mn+Cr) content was higher than scope of the present invention, processing characteristics significantly worsened, and can not stably make roughly segmental profile wire.
Shown in comparative example No.36, even Ceq within the scope of the invention, if the total content of Al, Ti, Mo, V, Nb and B is higher than scope of the present invention, processing characteristics still significantly worsens, and can not stably make roughly segmental profile wire.
More than, shown in comparative example No.32～36, as long as the composition of steel just can not stably be made high-intensity roughly segmental profile wire outside scope of the present invention.
Shown in comparative example No.37, when roughly the shear zone number in the segmental profile wire is greater than scope of the present invention, shown in comparative example No.38, the angle of above-mentioned shear zone is during less than scope of the present invention, shown in comparative example No.39, when roughly shear zone quantity in the segmental profile wire and shear zone angle are all outside scope of the present invention, frequently break in the course of processing, can not stably make roughly segmental profile wire.
Shown in comparative example No.37～39, even the composition of steel is within the scope of the invention, but as microstructure, if shear zone quantity and angle outside scope of the present invention, can not stably be made high-intensity roughly segmental profile wire.
Shown in comparative example No.40, when the Si degree of segregation at cementite/ferrite interface was higher than scope of the present invention, timeliness took place in the drawing process, processing characteristics significantly worsens, and can not stably make roughly segmental profile wire.
Can clearly be seen that by above embodiment roughly segmental profile wire of the present invention can be guaranteed very high intensity, thereby bringing into play great effect aspect weight that alleviates land optical cable and the raising weather resistance, in the very big benefit of industrial generation.
Table 1
| Test No. | Chemical ingredients (%) | |||||||||||||
| C | Si | Mn | Cr | Mn+Cr | Ceq | Al | Ti | Mo | V | Nb | B | Al+Ti+ Mo+V+Nb+B | ||
| Example of the present invention | 1 | 0.67 | 0.22 | 0.8O | 0.80 | 0.39 | 0.042 | 0.042 | ||||||
| 2 | 0.72 | 0.20 | 0.75 | 0.75 | 0.32 | 0.044 | 0.044 | |||||||
| 3 | 0.82 | 0.21 | 0.77 | 0.77 | 1.33 | 0.035 | 0.035 | |||||||
| 4 | 0.93 | 0.19 | 0.72 | 0.72 | 1.12 | 0.038 | 0.038 | |||||||
| 5 | 1.04 | 0.22 | 0.75 | 0.75 | 1.25 | 0.040 | 0.040 | |||||||
| 6 | 0.82 | 0.22 | 0.50 | 0.24 | 0.74 | 1.06 | 0.039 | 0.039 | ||||||
| 7 | 0.82 | 0.19 | 0.22 | 0.72 | 0.94 | 1.13 | 0.025 | 0.025 | ||||||
| 8 | 0.81 | 0.19 | 0.75 | 0.75 | 1.01 | 0.015 | 0.015 | |||||||
| 9 | 0.79 | 0.22 | 0.75 | 0.75 | 1.00 | 0.022 | 0.020 | 0.042 | ||||||
| 10 | 0.82 | 0.24 | 0.73 | 0.73 | 1.03 | 0.035 | 0.043 | 0.078 | ||||||
| 11 | 0.83 | 0.24 | 0.65 | 0.65 | 1.02 | 0.032 | 0.055 | 0.087 | ||||||
| 12 | 0.80 | 0.23 | 0.63 | 0.63 | 0.98 | 0.031 | 0.052 | 0.083 | ||||||
| 13 | 0.82 | 0.21 | 0.62 | 0.62 | 1.00 | 0.033 | 0.043 | 0.076 | ||||||
| 14 | 0.83 | 0.19 | 0.64 | 0.64 | 1.01 | 0.025 | 0.015 | 0.045 | 0.055 | 0.140 | ||||
| 15 | 0.80 | 0.22 | 0.65 | 0.65 | 0.99 | 0.035 | 0.065 | 0.035 | 0.135 | |||||
| 16 | 0.79 | 0.23 | 0.68 | 0.68 | 0.98 | 0.033 | 0.042 | 0.042 | 0.117 | |||||
| 17 | 0.83 | 0.25 | 0.62 | 0.62 | 1.02 | 0.022 | 0.015 | 0.035 | 0.052 | 0.045 | 0.004 | 0.173 | ||
| 18 | 0.92 | 0.21 | 0.77 | 0.77 | 1.13 | 0.035 | 0.035 | |||||||
| 19 | 0.92 | 0.21 | 0.77 | 0.77 | 1.13 | 0.035 | 0.035 | |||||||
| 20 | 0.92 | 0.21 | 0.77 | 0.77 | 1.13 | 0.035 | 0.035 | |||||||
| 21 | 0.92 | 0.21 | 0.77 | 0.77 | 1.13 | 0.035 | 0.O35 | |||||||
| 22 | 0.92 | 0.21 | 0.77 | 0.77 | 1.13 | 0.035 | 0.035 | |||||||
| 23 | 0.92 | 0.21 | 0.77 | 0.77 | 1.13 | 0.035 | 0.035 | |||||||
| 24 | 0.92 | 0.21 | 0.77 | 0.77 | 1.13 | 0.035 | 0.035 | |||||||
| 25 | 0.92 | 0.65 | 0.53 | 0.53 | 1.19 | 0.045 | 0.045 | |||||||
| 26 | 0.92 | 1.20 | 0.52 | 0.52 | 1.32 | 0.043 | 0.043 | |||||||
| 27 | 0.92 | 1.45 | 0.53 | 0.53 | 1.39 | 0.041 | 0.041 | |||||||
| 28 | 0.92 | 1.00 | 0.32 | 0.21 | 0.53 | 1.30 | 0.039 | 0.039 | ||||||
| 29 | 0.92 | 1.00 | 0.32 | 0.21 | 0.53 | 1.30 | 0.039 | 0.039 | ||||||
| 30 | 0.92 | 1.00 | 0.32 | 0.21 | 0.53 | 1.30 | 0.039 | 0.039 | ||||||
| 31 | 0.92 | 1.00 | 0.32 | 0.21 | 0.53 | 1.30 | 0.039 | 0.039 | ||||||
Table 2
| Test No. | Chemical ingredients (%) | |||||||||||||
| C | Si | Mn | Cr | Mn+Cr | Ceq | Al | Ti | Mo | V | Nb | B | Al+Ti+ Mo+V+Nb+B | ||
| Example of the present invention | 32 | 0.60 | 0.25 | 0.54 | 0.54 | 0.77 | 0.036 | 0.036 | ||||||
| 33 | 1.12 | 0.25 | 0.88 | 0.88 | 1.36 | 0.042 | 0.042 | |||||||
| 34 | 0.82 | 1.64 | 0.55 | 0.55 | 1.34 | 0.041 | 0.041 | |||||||
| 35 | 0.82 | 0.25 | 1.00 | 0.67 | 1.67 | 1.29 | 0.042 | 0.042 | ||||||
| 36 | 0.82 | 1.03 | 0.53 | 0.53 | 1.18 | 0.042 | 0.025 | 0.230 | 0.160 | 0.230 | 0.007 | 0.694 | ||
| 37 | 0.82 | 0.25 | 0.95 | 0.95 | 1.07 | 0.042 | 0.042 | |||||||
| 38 | 0.82 | 0.22 | 0.92 | 0.92 | 1.06 | 0.041 | 0.041 | |||||||
| 39 | 0.82 | 0.24 | 0.91 | 0.91 | 1.06 | 0.043 | 0.043 | |||||||
| 40 | 0.82 | 1.01 | 0.47 | 0.47 | 1.17 | 0.040 | 0.040 | |||||||
Table 3 (continuous table 1)
| Test No. | The performance of wire rod | The performance of profile wire | |||||||||||
| Line footpath (mm) | TS (MPa) | External diameter (mm) | Internal diameter (mm) | Section minification (%) | TS (MPa) | EL (％) | Form the profile wire sum of protective layer | The Si degree of segregation at α/β interface | The number of shear zone | The angle of shear zone | Processing characteristics | ||
| Example of the present invention | 1 | 6.00 | 1131 | 5.20 | 2.55 | 82.8 | 1810 | 3.2 | 3 | - | 13 | 42 | Well |
| 2 | 6.00 | 1136 | 5.20 | 2.55 | 30.8 | 1816 | 3.1 | 3 | - | 11 | 43 | Well | |
| 3 | 5.00 | 1298 | 5.20 | 2.55 | 32.3 | 1812 | 3.1 | 3 | - | 7 | 48 | Well | |
| 4 | 4.50 | 1410 | 5.20 | 2.55 | 65.8 | 1810 | 3.2 | 3 | - | 0 | 45 | Well | |
| 5 | 4.00 | 1552 | 5.20 | 2.55 | 56.3 | 1887 | 3.0 | 3 | - | 0 | 43 | Well | |
| 6 | 5.00 | 1325 | 5.20 | 2.55 | 72.3 | 1839 | 2.9 | 3 | - | 7 | 42 | Well | |
| 7 | 5.00 | 1399 | 5.20 | 2.55 | 72.3 | 1913 | 2.9 | 3 | - | 8 | 42 | Well | |
| 8 | 5.50 | 1247 | 5.20 | 2.55 | 77.1 | 1837 | 3.2 | 3 | - | 7 | 45 | Well | |
| 9 | 5.50 | 1262 | 5.20 | 2.55 | 77.1 | 1852 | 3.2 | 3 | - | 8 | 39 | Well | |
| 10 | 5.00 | 1342 | 5.20 | 2.55 | 72.3 | 1856 | 3.3 | 3 | - | 8 | 38 | Well | |
| 11 | 5.00 | 1345 | 5.20 | 2.55 | 72.3 | 1859 | 3.1 | 3 | - | 7 | 43 | Well | |
| 12 | 5.00 | 1303 | 5.20 | 2.55 | 72.3 | 1803 | 3.2 | 3 | - | 8 | 42 | Well | |
| 13 | 5.00 | 1309 | 5.20 | 2.55 | 72.3 | 1823 | 3.0 | 3 | - | 8 | 41 | Well | |
| 14 | 5.00 | 1385 | 5.20 | 2.55 | 72.3 | 1900 | 3.1 | 3 | - | 7 | 45 | Well | |
| 15 | 5.00 | 1359 | 5.20 | 2.55 | 72.3 | 1873 | 3.2 | 3 | - | 8 | 48 | Well | |
| 16 | 5.00 | 1339 | 5.20 | 2.55 | 72.3 | 1852 | 3.0 | 3 | - | 6 | 48 | Well | |
| 17 | 5.00 | 1432 | 5.20 | 2.55 | 72.3 | 1946 | 2.9 | 3 | - | 8 | 43 | Well | |
| 18 | 4.50 | 1412 | 5.20 | 2.55 | 65.8 | 1842 | 3.1 | 3 | - | 8 | 17 | Well | |
| 19 | 4.50 | 1412 | 5.20 | 2.55 | 65.8 | 1842 | 3.1 | 3 | - | 8 | 28 | Well | |
| 20 | 4.50 | 1412 | 5.20 | 2.55 | 65.8 | 1842 | 3.1 | 3 | - | 8 | 58 | Well | |
| 21 | 4.50 | 1412 | 5.20 | 2.55 | 65.8 | 1842 | 3.9 | 3 | - | 8 | 65 | Well | |
| 22 | 4.50 | 1412 | 5.20 | 2.55 | 65.8 | 1842 | 3.1 | 3 | - | 8 | 72 | Well | |
| 23 | 4.50 | 1412 | 5.20 | 2.55 | 65.8 | 1842 | 3.1 | 3 | - | 3 | 42 | Well | |
| 24 | 4.50 | 1412 | 5.20 | 2.55 | 65.8 | 1842 | 3.1 | 3 | - | 17 | 43 | Well | |
| 25 | 5.50 | 1422 | 5.20 | 2.55 | 77.1 | 2012 | 2.8 | 3 | 1.22 | 12 | 36 | Well | |
| 26 | 5.50 | 1435 | 5.20 | 2.55 | 77.1 | 2025 | 2.9 | 3 | 1.34 | 4 | 31 | Well | |
| 27 | 5.50 | 1457 | 5.20 | 2.55 | 77.1 | 2047 | 3.1 | 3 | 1.56 | 3 | 32 | Well | |
| 28 | 5.50 | 1417 | 5.20 | 2.55 | 77.1 | 2037 | 3.0 | 3 | 1.43 | 6 | 36 | Well | |
| 29 | 4.00 | 1418 | 5.20 | 2.55 | 78.6 | 2035 | 3.0 | 6 | 1.52 | 6 | 31 | Well | |
| 30 | 3.50 | 1419 | 5.20 | 2.55 | 79.1 | 2045 | 3.0 | 3 | 1.77 | 7 | 29 | Well | |
| 31 | 3.00 | 1420 | 5.20 | 2.55 | 77.3 | 2013 | 3.0 | 10 | 1.83 | 5 | 26 | Well | |
Table 4 (continuous table 1)
| Test No. | The performance of wire rod | The performance of profile wire | |||||||||||
| Line footpath (mm) | TS (MPa) | External diameter (mm) | Internal diameter (mm) | Relative reduction in area (%) | TS (MPa) | EL (％) | Form the profile wire sum of protective layer | The Si degree of segregation at α/β interface | The number of shear zone | The angle of shear zone | Processing characteristics | ||
| Example of the present invention | 32 | 6.80 | 995 | 5.20 | 2.55 | 85.0 | 1755 | 3.2 | 3 | - | 5 | 43 | Well |
| 33 | 5.00 | 1478 | 5.20 | 2.55 | 72.3 | 1992 | 1.2 | 3 | - | 25 | 43 | Break | |
| 34 | 5.00 | 1452 | 5.20 | 2.55 | 72.3 | 1966 | 1.6 | 3 | - | 7 | 42 | Break | |
| 35 | 5.00 | 1473 | 5.20 | 2.55 | 72.3 | 1987 | 1.5 | 3 | 1.83 | 9 | 42 | Break | |
| 36 | 5.50 | 1428 | 5.20 | 2.55 | 77.1 | 2018 | 1.7 | 3 | 1.83 | 7 | 31 | Break | |
| 37 | 5.50 | 1343 | 5.20 | 2.55 | 77.1 | 1934 | 1.2 | 3 | - | 29 | 38 | Break | |
| 38 | 5.50 | 1328 | 5.20 | 2.55 | 77.1 | 1918 | 1.5 | 3 | - | 9 | 8 | Break | |
| 39 | 5.50 | 1333 | 5.20 | 2.55 | 77.1 | 1924 | 2.1 | 3 | - | 31 | 6 | |
|
| 40 | 5.50 | 1443 | 5.20 | 2.55 | 77.1 | 2130 | 0.7 | 3 | 1.03 | 8 | 33 | Break | |
Claims (2)
1. land optical cable enhanced profile wire, it is characterized in that: % contains C in quality: greater than 0.65% and be no more than 1.1%, Si:0.15～1.5%, Mn:0.20～1.5%, the total amount that also contains Cr:1.2% or following and Mn+Cr is 0.2～1.5%, and Mo:0.01～0.1%, V:0.01～0.1%, Al:0.002～0.1%, Ti:0.002～0.1%, Nb:0.001～0.3%, in B:0.0005～0.1% a kind, 2 kinds or above and content add up to 0.0005～0.5%, surplus is Fe and unavoidable impurities, in addition, Ceq=C+1/4Si+1/5Mn+4/13Cr satisfies 0.80%≤Ceq≤1.80%, microstructure is ferrite-pearlitic structure or pearlitic structure, and cross on the L section central axis, the number that has the shear zone of gradient with respect to rolling direction is 20/mm or following with the calculating of per unit length central axis, and described central shaft and shear zone angulation are in 10～90 ° scope, tensile strength be 1800MPa or more than, cross section is for roughly fan-shaped, the roughly fan-shaped circular hollow section that constitutes receiving optical fiber that lumps together that several are such.
2. land optical cable enhanced profile wire, it is characterized in that: % contains C in quality: greater than 0.65% and be no more than 1.1%, Si:0.50～1.5%, Mn:0.20～1.5%, the total amount that also contains Cr:1.2% or following and Mn+Cr is 0.2～1.5%, and Mo:0.01～0.1%, V:0.01～0.1%, Al:0.002～0.1%, Ti:0.002～0.1%, Nb:0.001～0.3%, in B:0.0005～0.1% a kind, 2 kinds or above and content add up to 0.0005～0.5%, surplus is Fe and unavoidable impurities, in addition, Ceq=C+1/4Si+1/5Mn+4/13Cr satisfies 0.80%≤Ceq≤1.80%, microstructure is ferrite-pearlitic structure or pearlitic structure, and there is segregation in Si, make in pearlitic structure from cementite and ferritic interface in the 30nm scope of ferritic phase one side, satisfy the Si maximum segregation degree at cementite/ferrite interface, i.e. overall Si content 〉=1.1 of maximum Si concentration ÷ in the 30nm scope of ferritic phase one side from cementite and ferritic interface, cross on the L section central axis, the number that has the shear zone of gradient with respect to rolling direction is 20/mm or following with the calculating of per unit length central axis, and central shaft and shear zone angulation are in 10～90 ° scope, tensile strength be 1800MPa or more than, cross section is for roughly fan-shaped, the roughly fan-shaped circular hollow section that constitutes receiving optical fiber that lumps together that several are such.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002110657A JP3844442B2 (en) | 2002-04-12 | 2002-04-12 | Profile wire for reinforcing onshore optical fiber cable |
| JP110657/2002 | 2002-04-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1646715A CN1646715A (en) | 2005-07-27 |
| CN1312310C true CN1312310C (en) | 2007-04-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB038082462A Expired - Fee Related CN1312310C (en) | 2002-04-12 | 2003-01-14 | Deformed wire for reinforcing land optical fiber cable |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP3844442B2 (en) |
| CN (1) | CN1312310C (en) |
| WO (1) | WO2003087418A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| FR2960556B3 (en) * | 2010-05-31 | 2012-05-11 | Arcelormittal Wire France | HIGH-STRENGTH STEEL-SHAPED WIRE FOR MECHANICAL RESISTANT TO HYDROGEN FRAGILIZATION |
| CN103383874A (en) * | 2012-05-06 | 2013-11-06 | 河南科信电缆有限公司 | Tightened special-shaped corrosion-resistant optical fiber composition overhead phase conductor |
| CN104662190B (en) | 2012-10-04 | 2016-08-17 | 新日铁住金株式会社 | Ocean bottom cable protects effective profile wire, its manufacture method and Withstand voltage layer |
| WO2015097349A1 (en) | 2013-12-24 | 2015-07-02 | Arcelormittal Wire France | Cold-rolled wire made from steel having a high resistance to hydrogen embrittlement and fatigue and reinforcement for flexible pipes incorporating same |
| CN108220770B (en) * | 2017-12-15 | 2020-06-23 | 安泰科技股份有限公司 | Smelting preparation method of boron-added high-carbon pure steel in vacuum induction furnace |
| CN108300933B (en) * | 2017-12-15 | 2020-05-12 | 安泰科技股份有限公司 | Smelting preparation method of zirconium-added high-carbon pure steel in vacuum induction furnace |
| CN114657471B (en) * | 2022-03-27 | 2022-12-23 | 中天钢铁集团有限公司 | Production method of low-carbon energy-saving wire rod for bridge cable rope with pressure of not less than 2060MPa |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62202051A (en) * | 1986-02-28 | 1987-09-05 | Nippon Steel Corp | Special-form wire for submarine optical fiber cable |
| JPS63199309A (en) * | 1987-02-16 | 1988-08-17 | Sumitomo Electric Ind Ltd | Steel wire material for reinforcing optical fiber |
| JPH06158225A (en) * | 1992-11-30 | 1994-06-07 | Nippon Steel Corp | High strength steel wire and production thereof |
| CN1118815A (en) * | 1994-03-29 | 1996-03-20 | 中国科学院金属研究所 | Heat-resistant steel wire for logging |
| CN1164577A (en) * | 1996-04-26 | 1997-11-12 | 里沃金属丝原料有限公司 | Profiled wire for use on carding machines |
| JP2001305403A (en) * | 2000-04-25 | 2001-10-31 | Occ Corp | Submarine optical cable |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60164715U (en) * | 1984-04-11 | 1985-11-01 | 昭和電線電纜株式会社 | Optical fiber composite lightning-resistant wire |
| JP3725576B2 (en) * | 1995-04-26 | 2005-12-14 | 新日本製鐵株式会社 | Manufacturing method of high strength galvanized steel wire |
-
2002
- 2002-04-12 JP JP2002110657A patent/JP3844442B2/en not_active Expired - Fee Related
-
2003
- 2003-01-14 CN CNB038082462A patent/CN1312310C/en not_active Expired - Fee Related
- 2003-01-14 WO PCT/JP2003/000215 patent/WO2003087418A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62202051A (en) * | 1986-02-28 | 1987-09-05 | Nippon Steel Corp | Special-form wire for submarine optical fiber cable |
| JPS63199309A (en) * | 1987-02-16 | 1988-08-17 | Sumitomo Electric Ind Ltd | Steel wire material for reinforcing optical fiber |
| JPH06158225A (en) * | 1992-11-30 | 1994-06-07 | Nippon Steel Corp | High strength steel wire and production thereof |
| CN1118815A (en) * | 1994-03-29 | 1996-03-20 | 中国科学院金属研究所 | Heat-resistant steel wire for logging |
| CN1164577A (en) * | 1996-04-26 | 1997-11-12 | 里沃金属丝原料有限公司 | Profiled wire for use on carding machines |
| JP2001305403A (en) * | 2000-04-25 | 2001-10-31 | Occ Corp | Submarine optical cable |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3844442B2 (en) | 2006-11-15 |
| CN1646715A (en) | 2005-07-27 |
| JP2003301239A (en) | 2003-10-24 |
| WO2003087418A1 (en) | 2003-10-23 |
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