WO2014055010A1 - Câble d'alimentation électrique aérien - Google Patents

Câble d'alimentation électrique aérien Download PDF

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Publication number
WO2014055010A1
WO2014055010A1 PCT/SE2013/051091 SE2013051091W WO2014055010A1 WO 2014055010 A1 WO2014055010 A1 WO 2014055010A1 SE 2013051091 W SE2013051091 W SE 2013051091W WO 2014055010 A1 WO2014055010 A1 WO 2014055010A1
Authority
WO
WIPO (PCT)
Prior art keywords
power cable
electric power
steel alloy
overhead electric
weight
Prior art date
Application number
PCT/SE2013/051091
Other languages
English (en)
Inventor
Anders SÖDERMAN
Original Assignee
Sandvik Intellectual Property Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sandvik Intellectual Property Ab filed Critical Sandvik Intellectual Property Ab
Publication of WO2014055010A1 publication Critical patent/WO2014055010A1/fr
Priority to IN981/KOLNP/2014A priority Critical patent/IN2014KN00981A/en

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Classifications

    • 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
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
    • 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
    • C22C38/001—Ferrous alloys, e.g. steel alloys containing N
    • 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
    • C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
    • 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
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
    • 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
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
    • 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
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/52—Ferrous alloys, e.g. steel alloys containing chromium with nickel with cobalt
    • 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
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
    • 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
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/14—Ropes or cables with incorporated auxiliary elements, e.g. for marking, extending throughout the length of the rope or cable
    • D07B1/147—Ropes or cables with incorporated auxiliary elements, e.g. for marking, extending throughout the length of the rope or cable comprising electric conductors or elements for information transfer
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B5/00—Non-insulated conductors or conductive bodies characterised by their form
    • H01B5/08—Several wires or the like stranded in the form of a rope
    • H01B5/10—Several wires or the like stranded in the form of a rope stranded around a space, insulating material, or dissimilar conducting material
    • H01B5/102—Several wires or the like stranded in the form of a rope stranded around a space, insulating material, or dissimilar conducting material stranded around a high tensile strength core
    • H01B5/104—Several wires or the like stranded in the form of a rope stranded around a space, insulating material, or dissimilar conducting material stranded around a high tensile strength core composed of metallic wires, e.g. steel wires
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • H01B9/008—Power cables for overhead application
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/001—Austenite
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/005—Ferrite
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • 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
    • D07B2205/3028—Stainless steel
    • 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
    • D07B2205/3032—Austenite
    • 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
    • D07B2205/3042—Ferrite
    • 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
    • D07B2205/305—Steel characterised by the carbon content having a low carbon content, e.g. below 0,5 percent respectively NT wires
    • 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
    • D07B2205/306—Aluminium (Al)

Definitions

  • the present invention relates to an overhead electric power cable according to the preamble of claim 1 .
  • Overhead electric power cables also called overhead electric conductors are used for conducting electric power from power plants over land or sea.
  • the power cables typically consist of several conducting wires, such as aluminum wires, which surround a central steel wire core.
  • the purpose of the steel wire core is to support the weak aluminum wires when the electric power cable is suspended in the air on between towers.
  • a general problem with overhead electrical power cables is that the length of the power cable increases due to thermal expansion since heat is generated in the power cable when electric current is conducted there through. Thermal expansion may lead to sagging of the cable and in extreme cases cause the cable to touch the ground or nearby constructions.
  • Carbon steel is used in the supporting wires of overhead electric power cables.
  • Carbon steel is a material which is available at low cost and has sufficiently high strength and sufficiently low thermal expansion to be suitable as a supporting wire in overhead electric power cables.
  • the thermal expansion coefficient of carbon steel which lies in the range of 1 1 .5 - 12.5 x10 "6 /°C, limits its use in power grids to maximum cable temperatures below 200 °C.
  • JP61266558 shows a further material which has been proposed in the past for use as reinforcement in electrical cables. However, this material has not sufficiently low thermal expansion to be used in modern power grids.
  • an overhead electric power cable (1 ) comprising conducting wires (2) and a supporting wire (3) characterized in that the supporting wire comprises a ferritic-austenitic steel alloy which essentially consists of 30 - 70 vol% ferrite and 30 - 70 vol% austenite, whereby the steel alloy has the following composition in percent by weight (wt%):
  • the material that is used in the supporting wire of the inventive overhead cable is variant of so called duplex stainless steel alloy, i.e a stainless steel having a structure of both austenite and ferrite.
  • the steel alloy in the supporting wire of the inventive power cable is known to have high strength, good ductility and very good resistance to corrosion. Due to these properties the steel alloy have found use as reinforcement in constructions, for example as supporting wires in bridges or load bearing elements in marine
  • CTE Coefficient of Thermal Expansion
  • the duplex matrix itself may also have an impact on thermal expansion, due to the extended amount of phase
  • the good corrosion resistance ensures long lifetime of the cable in coastal areas.
  • the steel alloy has a Critical Pitting Temperature (CPT) of 45 -60 °C (0.1 %Nacl) +300mV) which ensures sufficient corrosion resistance in all environments.
  • CPT Critical Pitting Temperature
  • the high strength of the supporting wire makes it possible to use the inventive overhead cable in cold climates where ice formation could weigh down the cable to a point where it breaks.
  • the wire further has a torsion ductility of 24 - 28 turns over a length of wire which is equal to the wire diameter x 100.
  • This torsion ductility is very high in comparison with other materials. Torsion ductility is an important property of the wire since electric power cables are manufactured by twinning of several conductors in to a cable which may have a length of several hundred meters. According to international standards a material which is designated for use in cables must have a torsion ductility of at least 20 turns.
  • the diameter of the supporting wire can be reduced, this makes it possible to increase the number of alumina conductors in the inventive power cable with maintained total diameter of the cable.
  • the advantage thereof is that the capacity of the cable can be increased without increasing the total diameter of the cable.
  • the supporting steel wire may have a composition (in weigth%) of: C: 0.01 - 0.07; N: 0.1 - 0.3; Ni 1 - 3; Cr: 18 - 25; Mn: 2 -8; Si: 0.1 - 1 ; Mo: ⁇ 1 .0.
  • the amount of carbon may be 0.01 - 0.03 weight%.
  • the amount of nitrogen may be 0.20 - 0.25 weight% .
  • the amount of manganese may be 2 -6 weight%.
  • Silica may be 0.1 - 1 .5 weight%.
  • the supporting steel wire may have a composition (in weight%) of: C: 0.03; N: 0.22; Ni 1 .49; Cr 21 .6; Si: 0,71 ; Mo 0.15; Mn: 4.8, Mo 0.15.
  • Figure 1 a schematic drawing of a cross-section of an overhead electric power cable according to the invention.
  • Figure 2 a schematic drawing of a side view of a portion of an overhead electric power cable according to the invention.
  • Figure 1 shows the inventive overhead power cable 1 in cross-section.
  • Figure 2 shows a side view of a portion of the inventive power cable.
  • the general design of the cable is known in the art and its construction will therefore on be briefly described here.
  • the power cable which could be of any length and diameter, comprises several alumina conductors 2, i.e. alumina wires.
  • the cable could comprise any number of alumina conductors for example 3-10, at least 20 at least 50, in figure 1 the cable comprises 30 alumina conductors.
  • the alumina conductors are surrounds a supporting wire 3 which is arranged in the center of the power cable.
  • the supporting wire 3 may be one single wire or consist of several wires, such as 2 or 3 or more wires that have been twined together, in figure 1 the supporting wire comprises 7 wires that are twined together.
  • the wire may have any suitable diameter for example 1 - 5 mm, typically 1 .78 - 4.75mm .
  • the entire power cable is manufacture by winding and twining alumina wires around the central supporting wire.
  • the supporting wire consists of, i.e. is alexly manufactured from, a ferritic-austenitic steel alloy which consists of the following alloying elements:
  • the content of nitrogen in the steel should therefore be 0.1 - 0.6 wt%, alternatively 0.1 - 0.3 wt%, alternatively 0.20 - 0.25 wt%.
  • Nickel (Ni) is an expensive alloying element giving a large contribution to the alloy cost of a standard austenitic stainless steel alloy. Nickel promotes the formation of austenite consequently inhibits the formation of ferrite. Nickel is therefore an important constituent in the steel of the supporting wire which should be duplex, i.e. have both an austenitic and a ferritic phase. Nickel further improves ductility and to some extent also the corrosion resistance. To ensure ductility and sufficient amount of austenitic phase in the steel the amount of nickel should be 0.1 - 3 wt%.
  • Chromium (Cr) is an important element of the stainless steel alloy since it provides corrosion resistance by the formation of a chromium-oxide layer on the surface of the steel alloy.Chromium is further a ferrite stabilizing alloy element and is therefore important for ensuring a duplex phase of both austenite and ferrite in the steel of the supporting wire.
  • the content of chromium should be 18 - 30 weight%, alternatively 18- 25 weight%.
  • Manganese (Mn) stabilizes the austenite phase and is therefore an important element as a replacement for nickel, in order to control the amount of ferrite phase formed in the steel alloy. The cost of manganese is lower than the cost of nickel and therefore the total cost of the alloy may be reduced by replacing nickel with manganese.
  • manganese Another positive effect of manganese is that it promotes the solubility of nitrogen in the solid phase, and by that also indirectly increases the stability of the austenitic microstructure. Manganese will however increase the deformation hardening of the steel alloy, which increases the the mechanical strength and lowers the ductility, causing an enlarged risk of formation of cracks in the steel alloy during cold working. High amounts of manganese also reduce the corrosion resistance of the steel alloy, especially the resistance against pitting corrosion. The amount of manganese in the steel alloy should therefore be limited to a range from 1 - 10 wt%, alternatively 2 - 8 wt%, alternatively 2 -6 wt%.
  • Silicon (Si) is necessary for removing oxygen from the steel melt during manufacturing of the steel alloy and therefore the steel alloy will contain some amounts of silicon.
  • silicon increases the tendency for precipitation of intermetallic phases which makes the material brittle and therefore has a negative impact on the torsion ductility of the material.
  • High torsion ductility is an important property of the supporting wire since the wire is twisted several turns during manufacture of the overhead power cable and it is therefore important to keep the content of silicon as low as possible in the supporting steel wire. Consequently, the amount of silicon in the supporting steel wire hould therefore be limited to a maximum of 2.0 wt%, alternatively 0.1 - 1 .5 wt%.
  • Copper (Cu) increases the ductility of the steel and stabilizes the austenite phase. At high temperatures, a too high amount of copper sharply reduces the hot workability of the steel. The amount of copper in the steel alloy should therefore be limited to a maximum of 3.0 wt%.
  • Co Co
  • Cobalt can be used to replace some Ni as an austenite-stabilizing element however, cobalt is an expensive element so it should be limited to a maximum of 3.0 wt%.
  • the supporting steel wire of the inventive overhead power cable should have a so called duplex structure.
  • duplex structure is meant that the structure of the supportive steel wire consists of both ferrite and austenite. Ferrite has low thermal expansion and it is therefore important that sufficient ferritic phase is present in the alloy. However, in comparison with austenite, ferrite is soft and has low ductility. The austenitic phase has high thermal expansion and is tough and has high strength. In a duplex steel, the presence of a mixture of ferrite and austenite yields good ductility.
  • the amounts of the alloy elements described above are balanced so that the amount of measurable ferritic phase is 30 to 70 vol% and the amount of austenitic phase is 30 - 70 vol%.
  • the amount of ferrite may for example be measured by microscope, i.e. ocular.
  • the amount of ferrite may also be measured by magnetic induction, for example by using a Fischer Feritscope® M10B from the company Helmut Fischer GmbH.
  • a heat of a steel alloy having the following chemical composition was prepared by conventional steel making processes.
  • the steel alloy had the following composition:
  • the steel alloy was cast, rolled and finally drawn to a wire having a diameter of 3.1 mm.
  • the wire was cut into 50 mm long samples.
  • the corrosion resistance of the samples were determined as Critical Pitting
  • CPT Temperature
  • the CTE data (Coefficient of Thermal Expansion) was thereafter determined on two wire samples (AL 167 and AL 168) in the temperature interval from a relation temperature RT of 30°C to a final temperature of 400 ⁇ € by a dilatometer (Bahr DIL 802).
  • a measuring system of fused silica was used which was calibrated against a reference sample of platinum.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Non-Insulated Conductors (AREA)
  • Conductive Materials (AREA)

Abstract

La présente invention concerne un câble d'alimentation électrique aérien (1) comprenant des fils conducteurs (2) et un fil de support (3), le fil de support comprenant un alliage d'acier ferritique-austénitique qui est essentiellement constitué de 30 à 70 % en volume de ferrite et de 30 à 70 % en volume d'austénite de sorte que l'alliage d'acier ait la composition suivante en pour cent en poids (% en poids) : C : < 0,1, N : 0,1 à 0,5, Ni : 0,1 à 3, Cr : 18 à 30, Mn : 1 à 10, Si : ≤ 2, Cu : ≤ 3, Co: ≤ 3, Mo : ≤ 2, le complément étant Fe et des impuretés normalement présentes.
PCT/SE2013/051091 2012-10-05 2013-09-18 Câble d'alimentation électrique aérien WO2014055010A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
IN981/KOLNP/2014A IN2014KN00981A (en) 2012-10-05 2014-05-07 An overhead electric power cable

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE1251127-5 2012-10-05
SE1251127A SE536835C2 (sv) 2012-10-05 2012-10-05 En luftledning för elkraft

Publications (1)

Publication Number Publication Date
WO2014055010A1 true WO2014055010A1 (fr) 2014-04-10

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ID=50435236

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Application Number Title Priority Date Filing Date
PCT/SE2013/051091 WO2014055010A1 (fr) 2012-10-05 2013-09-18 Câble d'alimentation électrique aérien

Country Status (3)

Country Link
IN (1) IN2014KN00981A (fr)
SE (1) SE536835C2 (fr)
WO (1) WO2014055010A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104616723A (zh) * 2015-02-06 2015-05-13 江苏藤仓亨通光电有限公司 一种铜包钢绞线结构
WO2017182531A1 (fr) * 2016-04-20 2017-10-26 Ugitech Armature de rupteur de pont thermique pour la construction de bâtiments, et rupteur de pont thermique la comportant

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61266558A (ja) * 1985-05-20 1986-11-26 Shinko Kosen Kogyo Kk 高靭性の２相ステンレス鋼線
EP2172574A1 (fr) * 2007-08-02 2010-04-07 Nippon Steel & Sumikin Stainless Steel Corporation Acier inoxydable austénoferritique d'excellente résistance à la corrosion et transformabilité, et procédé pour la fabrication dudit
WO2012004473A1 (fr) * 2010-07-07 2012-01-12 Arcelormittal Investigación Y Desarrollo Sl Acier inoxydable austéno-ferritique à usinabilité améliorée

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61266558A (ja) * 1985-05-20 1986-11-26 Shinko Kosen Kogyo Kk 高靭性の２相ステンレス鋼線
EP2172574A1 (fr) * 2007-08-02 2010-04-07 Nippon Steel & Sumikin Stainless Steel Corporation Acier inoxydable austénoferritique d'excellente résistance à la corrosion et transformabilité, et procédé pour la fabrication dudit
WO2012004473A1 (fr) * 2010-07-07 2012-01-12 Arcelormittal Investigación Y Desarrollo Sl Acier inoxydable austéno-ferritique à usinabilité améliorée

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104616723A (zh) * 2015-02-06 2015-05-13 江苏藤仓亨通光电有限公司 一种铜包钢绞线结构
WO2017182531A1 (fr) * 2016-04-20 2017-10-26 Ugitech Armature de rupteur de pont thermique pour la construction de bâtiments, et rupteur de pont thermique la comportant
EP3445885B1 (fr) * 2016-04-20 2022-10-19 Ugitech Armature de rupteur de pont thermique pour la construction de bâtiments, et rupteur de pont thermique la comportant

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Publication number Publication date
SE1251127A1 (sv) 2014-04-06
IN2014KN00981A (en) 2015-10-09
SE536835C2 (sv) 2014-09-30

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