CN104755671A - Coated steel stranded cable, and method for manufacturing same - Google Patents
Coated steel stranded cable, and method for manufacturing same Download PDFInfo
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- CN104755671A CN104755671A CN201380052568.1A CN201380052568A CN104755671A CN 104755671 A CN104755671 A CN 104755671A CN 201380052568 A CN201380052568 A CN 201380052568A CN 104755671 A CN104755671 A CN 104755671A
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- coated steel
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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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B1/00—Constructional features of ropes or cables
- D07B1/06—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
-
- 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
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B1/00—Constructional features of ropes or cables
- D07B1/06—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
- D07B1/0606—Reinforcing cords for rubber or plastic articles
- D07B1/066—Reinforcing cords for rubber or plastic articles the wires being made from special alloy or special steel composition
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B1/00—Constructional features of ropes or cables
- D07B1/06—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
- D07B1/0693—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core having a strand configuration
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B1/00—Constructional features of ropes or cables
- D07B1/12—Ropes or cables with a hollow core
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2201/00—Ropes or cables
- D07B2201/10—Rope or cable structures
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2201/00—Ropes or cables
- D07B2201/20—Rope or cable components
- D07B2201/2001—Wires or filaments
- D07B2201/2006—Wires or filaments characterised by a value or range of the dimension given
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2201/00—Ropes or cables
- D07B2201/20—Rope or cable components
- D07B2201/2015—Strands
- D07B2201/2023—Strands with core
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2201/00—Ropes or cables
- D07B2201/20—Rope or cable components
- D07B2201/2047—Cores
- D07B2201/2051—Cores characterised by a value or range of the dimension given
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2205/00—Rope or cable materials
- D07B2205/30—Inorganic materials
- D07B2205/3021—Metals
- D07B2205/3025—Steel
- D07B2205/3046—Steel characterised by the carbon content
- D07B2205/3057—Steel characterised by the carbon content having a high carbon content, e.g. greater than 0,8 percent respectively SHT or UHT wires
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2501/00—Application field
- D07B2501/20—Application field related to ropes or cables
- D07B2501/2015—Construction industries
- D07B2501/203—Bridges
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Ropes Or Cables (AREA)
- Coating With Molten Metal (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
According to the present invention, a coated steel stranded cable comprises a plurality of strands, and one central strand, and a plurality of lateral strands stranded on an outside of the central strand. The central strand and the plurality of strands include, in weight %: 0.9-1.2% of C, 0.4-0.7% of Mn, 1.0-1.5% of Si, 0.4-0.7% of Cr, less than 0.01% of P, less than 0.01% of S, and a residual amount of Fe and other inevitable impurities.
Description
Technical field
The present invention's design relates to high strength coated steel twisted wire for cable-stayed bridge bridge and civil engineering structure and manufacture method thereof, more specifically, relate to the coated steel twisted wire and manufacture method thereof with excellent fatigue properties, compared with the coated steel twisted wire for 1800MPa rank in correlation technique, the intensity of steel strand wires of the present invention improves about 20% or higher.
Background technology
Cable-stayed bridge and building-supporting coated steel twisted wire are used as the important materials for supporting construction load.This kind of coated steel twisted wire is usually obtained like this: carry out cold drawn to wire rod, then the multiple line stock of twisting, and in the end operation heat-treats to remove residual deformation.Described multiple line stock is generally zinc-plated.Non-coating steel twisted wire is used as line stock.Generally speaking, the intensity of steel strand wires is about 1800MPa.
In order to improve the intensity of coated steel twisted wire, carrying out special processing, as process of turning blue, or having carried out comprising adjustment for the formation of the type of coated steel twisted wire material and the multiple processing of ratio.
But although in the coated steel twisted wire of cable-stayed bridge, fatigue properties are very important, except improving the intensity of coated steel twisted wire, in order to improve the behavior or seldom of fatigue properties.That is, need to provide such coated steel twisted wire, it has the high strength for bridge, and the fatigue properties of predetermined tensile strength and percentage elongation and excellence, this designs by being grouped into the one-tenth for the manufacture of coated steel twisted wire, cold drawn, Zn-Al alloy plating, secondary are cold drawn and stranded operation and obtaining.
The detailed description of inventive concept
Technical problem
The present invention's design is provided for the high strength coated steel twisted wire of cable-stayed bridge bridge and civil engineering structure, namely, there is coated steel twisted wire and the manufacture method thereof of excellent fatigue properties, compared with the coated steel twisted wire for 1800MPa rank in correlation technique, the intensity of coated steel twisted wire of the present invention improves about 20% or higher.
Technical scheme
According to an aspect of the present invention's design, a kind of coated steel twisted wire is provided, comprises multiple line stock: a central strand and be stranded in multiple outsides stock of described central strand outside, and
In % by weight, described central strand and described outside stock comprise: the carbon (C) of 0.9% to 1.2%, the manganese (Mn) of 0.4% to 0.7%, 1.0% to 1.5% silicon (Si), 0.4% to 0.7% chromium (Cr), be less than 0.01% phosphorus (P), be less than the sulphur (S) of 0.01% and the iron (Fe) of surplus and other inevitable impurity.
Described coated steel twisted wire has the tensile strength of more than 2200MPa and the percentage elongation of more than 7%.
Coated steel twisted wire according to claim 1, also comprises the coating containing zinc-aluminium.
According to an aspect of the present invention's design, provide a kind of method manufacturing coated steel twisted wire, described method comprises:
Isothermal transformation heat treatment and once cold drawn is carried out to wire rod, in % by weight, described cable material comprises: the carbon (C) of 0.9% to 1.2%, the manganese (Mn) of 0.4% to 0.7%, 1.0% to 1.5% silicon (Si), 0.4% to 0.7% chromium (Cr), be less than 0.01% phosphorus (P), be less than the sulphur (S) of 0.01% and the iron (Fe) of surplus and other inevitable impurity;
Zn-Al alloy plating is carried out to through isothermal transformation heat treatment and once cold drawn wire rod;
Carry out redraing, make central strand and outside stock with the described wire rod of the Zn-Al alloy by plating; And
Twisting is carried out to described outside stock,
Wherein said redraing carries out in the scope that section shrinkage rate is 12% to 25%.
Method for the manufacture of coated steel twisted wire also comprises: when described in twisting during the stock of outside, carry out stress decay heat treatment, wherein obtain for the heat treated temperature of stress decay and holding time by following formula 1:
P(L.M.)＝T[logtr+C]
10800<P(L.M.)<11280，
Wherein P (L.M.) is heat treatment parameter, and T is temperature (K), tr be time (hr), C is constant 20.
Invention effect
Coated steel twisted wire according to the present invention's design has relatively low surface residual stress.Low surface residual stress decreases processing inhomogeneities, and percentage elongation represents high tenacity, and percentage elongation advantageously affects torsional deflection and fatigue properties value.
Therefore, effectively can be used for supporting the stress of cable-stayed bridge bridge and building structure according to the coated steel twisted wire of the present invention's design.The coated steel twisted wire with high strength adds the distance between bridge post, makes it possible to build extra-large bridge, and can carry out stability and design for aesthetic.
Accompanying drawing explanation
Fig. 1 is the figure of the coated steel twisted wire according to exemplary.
Fig. 2 is the sectional view of the coated steel twisted wire according to exemplary.
Fig. 3 is the chart of the fatigue and cyclic number illustrated according to stress decay heat-treat condition.
Fig. 4 is the form of the result of the test illustrated according to the condition manufacturing coated steel twisted wire.
Preferred forms
According to an aspect of the present invention's design, a kind of coated steel twisted wire is provided, comprises multiple line stock: a central strand and be stranded in multiple outsides stock of described central strand outside, and
In % by weight, described central strand and described outside stock comprise: the carbon (C) of 0.9% to 1.2%, the manganese (Mn) of 0.4% to 0.7%, 1.0% to 1.5% silicon (Si), 0.4% to 0.7% chromium (Cr), be less than 0.01% phosphorus (P), be less than the sulphur (S) of 0.01% and the iron (Fe) of surplus and other inevitable impurity.
The pattern of the present invention's design
Hereinafter, with reference to the accompanying drawings the exemplary of the present invention's design is described.
By the detailed description below in conjunction with accompanying drawing, the exemplary of the present invention's design more clearly will be understood.But the present invention can specialize according to multiple different form, and should not regard the exemplary being limited to and listing as herein.Similar reference number refers to similar element.
In order to describe the object of the relation of some elements relative between other elements (as shown in the drawing), possibility usage space relative terms herein, as " inside " or " outside ".Space relative terms can be understood as except the orientation shown in accompanying drawing, is also intended to other orientation comprising element.Such as, when accessing element according to the opposite direction in accompanying drawing, the element being described as arranging at the end face of other elements has the orientation of the bottom surface of other elements.Therefore, depend on the concrete orientation in figure, term " on " can comprise D score and " on " all orientation.When element is oriented to another orientation, space used herein describes relatively can be understood by this.
Term used herein is only for describing specific embodiment, and not intended to be limiting the present invention.Singulative as used in this article " one ", " one " and " described " are also intended to comprise plural form, clearly indicate unless separately had in literary composition." comprise " when using term in description and/or " comprising " or " containing " and/or " containing " time, it should be further understood that, these terms limit the existence of described feature, region, entirety, step, operation, element and/or composition, but do not get rid of and also there is or increase one or more other features, region, entirety, step, operation, element, composition and/or their combination.
Unless otherwise defined, all terms used herein (comprising technical term and scientific terminology) have the identical implication that those skilled in the art understand usually.It is to be further understood that those terms such as defined in common dictionary should be interpreted as having implication consistent in the linguistic context with association area, and should not be interpreted as idealized or too formal meaning, unless carried out such definition clearly in literary composition.
In accompanying drawing, illustrate for the ease of explaining, thickness or the size of each element are exaggerated, omit or schematically show.In addition, the size of each parts and area not exclusively its actual size of reflection and area.
In addition, when describing the structure of the present invention's design in an exemplary embodiment, the orientation mentioned is based on accompanying drawing.When clearly not indicating in the structure that the present invention conceives describes relative to the reference point in this orientation or position relationship, with reference to appended with drawings.
Fig. 1 and Fig. 2 is the diagram of coated steel twisted wire 1 of the exemplary according to the present invention's design.
See figures.1.and.2, the coated steel twisted wire 1 according to the exemplary of the present invention's design comprises central strand 10 and multiple outsides stock 20, and multiple outsides stock 20 is stranded in the outside of central strand 10, and forms outer field outside.
Preferably, as depicted in figs. 1 and 2, a central strand 10 and six outside stocks 20 are comprised according to the coated steel twisted wire 1 of the present invention's design.The embodiment of the present invention's design is not limited to this.
Central strand 10 and outside stock 20 can be made with identical structure, or can be constructed to have different internal diameters or material.But the embodiment of the present invention's design is not limited to this.Outside each, stock 20 has predetermined lay pitch P, and is periodically stranded in the outside of central strand 10.
Below, be described in detail to the central strand 10 and the constitution system of outside stock 20 and the compositing range of material that form the present invention's design.
Carbon (C): 0.9 % by weight to 1.2 % by weight
Carbon (C) is for improving the effective and the most economic element of hardness of steel.Carbon (C) is the element of the cementite formed in the pearlitic structrure of steel.Along with the increase of C content, the share with the cementite of high strength increases, and the interlamellar spacing of pearlite lamella attenuates, thus can gain in strength.Therefore, need the C more than 0.9% to obtain the intensity of more than 2200MPa.When adding the C more than 1.2% content, the precipitation of free cementite may be there is.Therefore, required ductility reduces fast.Therefore, the upper limit of C is set as 1.2%.
Manganese (Mn): 0.2 % by weight to 0.7 % by weight
Manganese (Mn) is dissolved in the element in ferrite tissue, its increase steel intensity, improve quenching degree postpone pearlitic transformation.Need the Mn more than 0.2% to obtain meticulous pearlitic structrure, even if be also like this under slightly low cooling velocity.The segregation of Mn excessive meeting generative center, and martensitic structure can be produced centered by Mn, this can reduce drawing property.Therefore, the upper limit of Mn is set as 0.7%.
Silicon (Si): 0.4 % by weight to 0.7 % by weight
Silicon (Si) is for dissolving and strengthening the ferritic element in pearlite, and it is effective for acquisition high strength.When carrying out zinc-plated and Zn-Al alloy plating, Si avoids volume effects by suppressing the decomposition of cementite.Therefore, in order to obtain high strength, need to add the Si more than 1.0%.When the content of Si is more than 1.5%, ferritic ductility reduces fast, and this may cause the defect of surface texture.Therefore, the upper limit of Si is set as 1.5%.
Chromium (Cr): 0.4 % by weight to 0.7 % by weight
Chromium (Cr) for making the pitch smaller of pearlite lamella, thus strengthens intensity and ductility, suppresses the decomposition of cementite.When Cr content lower than 0.4% time, sufficient intensity can not be obtained.When the content of Cr is more than 0.7%, the termination time of isothermal transformation increases, thus makes reducing of the productivity, and probably produces martensitic structure.Therefore, the Cr of about 0.4% to 0.7% is added.
Sulphur (S): be less than 0.01 % by weight
When the content of sulphur (S) is more than 0.01%, the S with the shape of low melting point precipitate separates out at grain boundaries, and this causes red brittleness.Therefore, the content of S can be controlled in and is less than 0.01%.
Phosphorus (P): be less than 0.01 % by weight
When the content of phosphorus (P) is more than 0.01%, P is isolated between columnar zone, and this causes the cracking in red brittleness and cold drawing process.Therefore, the content of P can be controlled in and is less than 0.01%.
Except above-mentioned composition, central strand 10 and outside stock 20 also comprise iron (Fe) and other inevitable impurity of surplus.
Below, be described to the manufacture method with the high strength Zn-Al coating steel strand wires 1 of excellent fatigue properties conceived according to the present invention.
First, after isothermal transformation heat treatment is carried out to the wire rod containing above component, 9 paths carry out once cold drawn.After once cold drawn, carry out Zn-Al alloy plating, carry out redraing afterwards.By carrying out redraing, make the central strand 10 for steel strand wires (there is the final required tensile strength of more than 2200MPa) and outside stock 20.
In this case, in following scope, carry out redraing, wherein when the intensity of central strand 10 and outside stock 20 is more than 2200MPa, spiral cracking can not occur in torsion test.That is, when the section shrinkage rate of drawing after plating is more than 12%, the tensile strength of 2200MPa can be obtained.Therefore, although the minimum section shrinkage rate of drawing remains on 12% after plating, when drawing amount is more than 25%, the torque characteristic of outside stock 20 and central strand 10 may be reduced.When manufacturing steel strand wires under the state that spiral cracking occurs, fatigue properties and percentage elongation may be reduced.Therefore, after plating, the section shrinkage rate of drawing is defined as 12% to 25%.
Meanwhile, when manufactured by stock outside twisting 20 according to the present invention's design there are the high strength Zn-Al coating steel strand wires 1 of excellent fatigue properties time, carry out stress decay heat treatment.In this case, the heat treated temperature of stress decay is shown in following formula 1 with holding time.
P (L.M.)=T [logtr+C] (formula 1)
10800<P(L.M.)<11280，
Wherein, P (L.M.) is heat treatment parameter, and T is temperature (K), tr be time (hr), C is constant 20.
Why be set as being equal to or greater than 10800, being equal to or less than 11280 by according to the heat treated temperature of stress decay and the P (L.M.) held time, because when P (L.M.) is equal to or less than 10800, sufficient stress decay heat treatment can not be carried out, and fatigue properties reduce, and when P (L.M.) is equal to or greater than 11280, the heat treated temperature of stress decay is more than 382 DEG C, and this temperature is the temperature of zinc-aluminium fusing point, and therefore coating may melt.
Fig. 3 is the chart of the fatigue and cyclic number illustrated according to these stress decay heat-treat conditions.
As shown in Figure 3, when P (L.M.) value is about more than 10800, fatigue and cyclic number increases.
The fatigue test results with the high strength Zn-Al coating steel strand wires 1 of excellent fatigue properties manufactured under these conditions about using this manufacture method is shown in Figure 4, below will be described this.Fig. 4 is the form of the result of the test illustrated according to the condition manufacturing steel strand wires.In this case, use the hydraulic dynamometer of 50 tons to carry out fatigue test, maximum load is the tensile strength of 45%, and stress amplitude is 300MPa, not breaking, thinking by test when carrying out first time to during the the 2nd, 000,000 test.
In addition, use the percentage elongation (%) of extension meter (it the is Instron 50 tons of tensile testing machines) steel strand wires shown in survey map 4, and use X-ray diffractometer (XRD) to measure residual stress.
With reference to Fig. 4, the present invention conceives the percentage elongation (%) of percentage elongation (%) higher than comparative example 1,2 and 3 of embodiment 1 and 2.The present invention conceive embodiment 1 with 2 the relative surface residual stress lower than comparative example 1,2 and 3 of surface residual stress.Low surface residual stress decreases processing inhomogeneities, and percentage elongation represents high tenacity, and percentage elongation advantageously affects torsional deflection and fatigue properties value.
Therefore, effectively can be used for supporting the stress of cable-stayed bridge bridge and building structure according to the coated steel twisted wire of the present invention's design.The coated steel twisted wire with high strength adds the distance between bridge post, makes it possible to build extra-large bridge, and can carry out stability and design for aesthetic.
Although illustrate and describe the present invention's design especially with reference to exemplary of the present invention, should be understood that, when not departing from essence and the scope of following claim, various change can be made to the present invention in form and details.
Claims (5)
1. a coated steel twisted wire, comprises multiple line stock: a central strand and be stranded in multiple outsides stock of described central strand outside, and
In % by weight, described central strand and described outside stock comprise: the carbon (C) of 0.9% to 1.2%, the manganese (Mn) of 0.4% to 0.7%, 1.0% to 1.5% silicon (Si), 0.4% to 0.7% chromium (Cr), be less than 0.01% phosphorus (P), be less than the sulphur (S) of 0.01% and the iron (Fe) of surplus and other inevitable impurity.
2. coated steel twisted wire according to claim 1, wherein said coated steel twisted wire has the tensile strength of more than 2200MPa and the percentage elongation of more than 7%.
3. coated steel twisted wire according to claim 1, also comprises the coating containing zinc-aluminium.
4. manufacture a method for coated steel twisted wire, described method comprises:
Isothermal transformation heat treatment and once cold drawn is carried out to wire rod, in % by weight, described wire rod comprises: the carbon (C) of 0.9% to 1.2%, the manganese (Mn) of 0.4% to 0.7%, 1.0% to 1.5% silicon (Si), 0.4% to 0.7% chromium (Cr), be less than 0.01% phosphorus (P), be less than the sulphur (S) of 0.01% and the iron (Fe) of surplus and other inevitable impurity;
Zn-Al alloy plating is carried out to through isothermal transformation heat treatment and once cold drawn described wire rod;
Carry out redraing, make central strand and outside stock with the described wire rod of the Zn-Al alloy by plating; And
Twisting is carried out to described outside stock,
Wherein said redraing carries out in the scope that section shrinkage rate is 12% to 25%.
5. method according to claim 4, also comprises: when described in twisting during the stock of outside, carry out stress decay heat treatment, wherein obtain for the heat treated temperature of stress decay and holding time by following formula:
P(L.M.)＝T[logtr+C]
10800<P(L.M.)<11280，
Wherein P (L.M.) is heat treatment parameter, and T is temperature (K), tr be time (hr), C is constant 20.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020120112102A KR101420281B1 (en) | 2012-10-09 | 2012-10-09 | Wirerope and manufacturing method thereof |
| KR10-2012-0112102 | 2012-10-09 | ||
| PCT/KR2013/008965 WO2014058200A2 (en) | 2012-10-09 | 2013-10-08 | Coated steel stranded cable, and method for manufacturing same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104755671A true CN104755671A (en) | 2015-07-01 |
Family
ID=50478023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380052568.1A Pending CN104755671A (en) | 2012-10-09 | 2013-10-08 | Coated steel stranded cable, and method for manufacturing same |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2907915A4 (en) |
| KR (1) | KR101420281B1 (en) |
| CN (1) | CN104755671A (en) |
| WO (1) | WO2014058200A2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101595937B1 (en) * | 2014-10-07 | 2016-02-19 | 고려제강 주식회사 | Method for manufacturing high-strength plating steel wire and strand to strengthen overhead transmission wire and a steel wire and strand manufactured using the same |
| KR101597756B1 (en) * | 2014-10-07 | 2016-02-25 | 고려제강 주식회사 | Prestressing Strand having high stress corrosion feature |
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| KR20120090605A (en) * | 2011-02-08 | 2012-08-17 | 고려제강 주식회사 | Bronze coated cable bead |
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2012
- 2012-10-09 KR KR1020120112102A patent/KR101420281B1/en active IP Right Review Request
-
2013
- 2013-10-08 EP EP13845159.6A patent/EP2907915A4/en not_active Withdrawn
- 2013-10-08 WO PCT/KR2013/008965 patent/WO2014058200A2/en active Application Filing
- 2013-10-08 CN CN201380052568.1A patent/CN104755671A/en active Pending
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| KR100635326B1 (en) * | 2005-11-14 | 2006-10-18 | 주식회사 효성 | A high tensile steel cord and manufacturing method thereof |
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| KR100711469B1 (en) * | 2005-12-12 | 2007-04-24 | 주식회사 포스코 | A method for manufacturing 2000mpa grade hypereutectoid steel wire |
| CN101168818A (en) * | 2006-10-23 | 2008-04-30 | 宝山钢铁股份有限公司 | Fe-36Ni based alloy wire and manufacturing method thereof |
| KR20110099749A (en) * | 2010-01-25 | 2011-09-08 | 신닛뽄세이테쯔 카부시키카이샤 | Wire rod, steel wire, and method for manufacturing wire rod |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2907915A2 (en) | 2015-08-19 |
| KR20140046657A (en) | 2014-04-21 |
| WO2014058200A2 (en) | 2014-04-17 |
| KR101420281B1 (en) | 2014-08-14 |
| WO2014058200A3 (en) | 2014-06-19 |
| EP2907915A4 (en) | 2016-09-21 |
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