WO2012095224A1 - Câble en acier compact - Google Patents

Câble en acier compact Download PDF

Info

Publication number
WO2012095224A1
WO2012095224A1 PCT/EP2011/072074 EP2011072074W WO2012095224A1 WO 2012095224 A1 WO2012095224 A1 WO 2012095224A1 EP 2011072074 W EP2011072074 W EP 2011072074W WO 2012095224 A1 WO2012095224 A1 WO 2012095224A1
Authority
WO
WIPO (PCT)
Prior art keywords
diameter
steel cord
filaments
core filament
intermediate layer
Prior art date
Application number
PCT/EP2011/072074
Other languages
English (en)
Inventor
Zhichao Cheng
Hao TIAN
Aijun Zhang
Yiwen Luo
Qiuju TANG
Lei Pan
Original Assignee
Nv Bekaert Sa
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 Nv Bekaert Sa filed Critical Nv Bekaert Sa
Priority to EA201300815A priority Critical patent/EA024603B9/ru
Priority to CN201180064594.7A priority patent/CN103298996B8/zh
Priority to BR112013017567-2A priority patent/BR112013017567B1/pt
Publication of WO2012095224A1 publication Critical patent/WO2012095224A1/fr

Links

Classifications

    • 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
    • D07B1/062—Reinforcing cords for rubber or plastic articles the reinforcing cords being characterised by the strand configuration
    • D07B1/0633—Reinforcing cords for rubber or plastic articles the reinforcing cords being characterised by the strand configuration having a multiple-layer configuration
    • 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
    • D07B2201/2024—Strands twisted
    • D07B2201/2027—Compact winding
    • D07B2201/2028—Compact winding having the same lay direction and lay pitch
    • 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
    • D07B2201/2036—Strands characterised by the use of different wires or filaments
    • D07B2201/2037—Strands characterised by the use of different wires or filaments regarding the dimension of the wires or filaments
    • 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
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2047—Cores
    • D07B2201/2052—Cores characterised by their structure
    • D07B2201/2059—Cores characterised by their structure comprising wires

Definitions

  • the present invention relates to a steel cord adapted for the reinforcement of elastomer products, especially for reinforcing the carcass plies of medium to heavy truck and bus radial tires.
  • the steel cord comprises a core filament with a core filament diameter and two layers of filaments twisted around the core filament in the same direction and with the same step.
  • a 1 xdc I 18xdi CC is a compact cord comprising one core filament with a core filament diameter d c and eighteen layer filaments with a layer filament diameter di, arranged in an intermediate layer of six filaments and an outer layer of twelve filaments. Such a compact cord is disclosed in
  • the compact cord constitutes a stable construction because the cross-section of such a steel cord has the typical form of regular hexagon which is centrosymmetric and quite stable.
  • the 1 *dc I 15*di CC disclosed in WO-A1-03 069 055 comprises a core filament with a core filament diameter and fifteen layer filaments having a layer filament diameter twisted around the core filament.
  • the fifteen layer filaments are arranged in an intermediate layer of five filaments and in an outer layer of ten filaments.
  • the core filament diameter is smaller than the layer filament diameter.
  • Such a compact cord doesn't always constitute a stable construction for the cross-section of the cord has the typical form of regular pentagon which is not centrosymmetric, it would easily lose balance by being disturbed from the twisting machine during the manufacture process. Inversion or kinks would suddenly appear.
  • the invention aims at avoiding the disadvantages of the prior art.
  • a steel cord adapted for the reinforcement of elastomer products.
  • the steel cord comprises a core filament with a core filament diameter Do and 3N layer filaments twisted around the core filament in the same direction and with the same step, N ranges from four to five.
  • the 3N layer filaments are arranged in an intermediate layer of N filaments having an intermediate layer diameter Di and in an outer layer of 2N filaments having an outer layer diameter D2, and the steel cord has the following characteristics (Do, Di , D2 in mm ) :
  • the invention cord is a compact cord.
  • the cord has a good corrosion
  • N is preferably equal to five, which means that the steel cord comprises sixteen filaments. Five is preferred to four since five filaments in the intermediate layer fill more the intermediate layer in a stable way.
  • This first preferable embodiment may further satisfy following formula:
  • the first embodiment further has the advantage that only two different filament diameters are required.
  • the core filament diameter Do is smaller than the intermediate layer diameter Di. This second preferable embodiment may further satisfy following formula:
  • Figure 1 a andl b andl c are different cross-sections of the steel cord during the constitution in the prior art
  • Figure 2 is a cross-section of a first embodiment of a steel cord according to the invention.
  • Figure 3 is a cross-section of a second embodiment of a steel cord
  • Figure 2 shows a cross-section of a first embodiment of a steel cord 10.
  • the steel cord comprises a core filament 12 with a core filament diameter Do.
  • Five intermediate layer filaments 14 having an intermediate layer diameter Di form an intermediate layer around core filament 12.
  • the diameter Di is equal to the diameter Do.
  • Ten outer layer filaments 16 form an outer layer having an outer layer diameter D2 around the intermediate layer. All intermediate layer filaments 14 and all outer layer filaments 16 are twisted in the same twisting direction and with the same twisting step so that a compact configuration is formed. [0017]
  • the core filament diameter Do and the outer layer diameter D2 further satisfy the following relationship:
  • the steel cord 10 according to the invention was built as follows.
  • Starting product is a steel wire rod.
  • This steel wire rod has following steel composition: a minimum carbon content of 0.65% (e.g. at least 0.80%, or at least 0.92% with a maximum of 1.2%); a manganese content ranging from 0.20% to 0.90%; a silicon content ranging from 0.15% to 0.90%; a maximum sulphur content of 0.03%; a maximum phosphorus content of 0.30%; additional elements such as chromium (up to 0.2 to 0.4%) , boron, copper, cobalt, nickel, vanadium ... may be added to the composition in order to minimize the amount of deformation needed to obtain a predetermined tensile strength; all percentages being percentages by weight.
  • the steel rod is drawn in a number of consecutive steps until the required final diameter.
  • the final diameters of the steel filaments range from 0.05 mm to 0.60 mm.
  • the filament diameters preferably range from 0.05 to 0.35 mm.
  • the drawing steps may be interrupted by one or more heat treatment steps such as patenting.
  • the steel filaments are preferably provided with a coating which promotes the adhesion to rubber or with a coating which gives corrosion resistance to the wire.
  • a rubber adherable coating is e.g. brass; a corrosion resistant coating is e.g. zinc.
  • FIG 3 shows a cross-section of a second embodiment of the steel cord 20 according to the invention.
  • the steel cord 20 comprises a core filament 22 with a core filament diameter Do.
  • Five intermediate layer filaments 24 with an intermediate layer diameter Di have been twisted around the core filament 22.
  • An outer layer of outer layer filaments 26 having an outer layer diameter D2 is formed around the intermediate layer.
  • the core filament Do is smaller than the intermediate layer diameter Di and the diameters Dos DK D2 satisfy the following relationships:
  • the steel cord can be carried out in various tensile versions, ranging from a normal tensile strength to an ultra high tensile strength.
  • the steel cords according to the invention can be manufactured by means of a tubular twisting machine or preferably by means of a double-twisting device.
  • Both embodiments may be provided or not with a wrapping filament
  • a suitable example of a cord according to the second embodiment of the invention is
  • Table 1 hereunder summarizes some properties measured on the steel cord according to the second embodiment of the present invention.

Landscapes

  • Ropes Or Cables (AREA)

Abstract

L'invention porte sur un câble en acier (20) adapté au renfort de produits élastomères, lequel câble comprend un seul filament d'âme (22) présentant un diamètre de filament d'âme D0 et 3N filaments de couche (24, 26) torsadés autour du filament d'âme dans la même direction et au même pas. N est compris entre quatre et cinq. Les 3N filaments de couche sont disposés dans une couche intermédiaire de N filaments (24) ayant un diamètre de couche intermédiaire Di et dans une couche externe de 2N filaments (26) ayant un diamètre de couche externe D2, et le câble en acier (20) possède les caractéristiques suivantes (D0, D1, D2 en mm) : D0 ≤ D1 < D2.
PCT/EP2011/072074 2011-01-10 2011-12-07 Câble en acier compact WO2012095224A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EA201300815A EA024603B9 (ru) 2011-01-10 2011-12-07 Компактный стальной корд
CN201180064594.7A CN103298996B8 (zh) 2011-01-10 2011-12-07 紧密型钢帘线
BR112013017567-2A BR112013017567B1 (pt) 2011-01-10 2011-12-07 Cordão de aço compacto

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNPCT/CN2011/000042 2011-01-10
CN2011000042 2011-01-10

Publications (1)

Publication Number Publication Date
WO2012095224A1 true WO2012095224A1 (fr) 2012-07-19

Family

ID=45346459

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2011/072074 WO2012095224A1 (fr) 2011-01-10 2011-12-07 Câble en acier compact

Country Status (3)

Country Link
BR (1) BR112013017567B1 (fr)
EA (1) EA024603B9 (fr)
WO (1) WO2012095224A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9840808B2 (en) 2012-02-27 2017-12-12 Gripple Limited Multiple layer wire strand
KR20200023399A (ko) * 2017-06-27 2020-03-04 베카에르트 어드밴스드 코드즈 알테 엔브이 폴리머 물품의 보강을 위한 보강 스트랜드

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56122814U (fr) * 1980-02-19 1981-09-18
JPH08218281A (ja) * 1995-02-13 1996-08-27 Bridgestone Metalpha Kk ゴム物品補強用スチールコード
EP0627520B1 (fr) 1993-06-02 1998-12-02 N.V. Bekaert S.A. Câble d'acier compact sans fil de frettage
WO2003069055A1 (fr) 2002-02-14 2003-08-21 N.V. Bekaert S.A. Cable d'acier compact
US6863103B1 (en) * 1999-11-11 2005-03-08 Bridgestone Corporation Steel cord for the reinforcement of a rubber article and tire

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56122814U (fr) * 1980-02-19 1981-09-18
EP0627520B1 (fr) 1993-06-02 1998-12-02 N.V. Bekaert S.A. Câble d'acier compact sans fil de frettage
JPH08218281A (ja) * 1995-02-13 1996-08-27 Bridgestone Metalpha Kk ゴム物品補強用スチールコード
US6863103B1 (en) * 1999-11-11 2005-03-08 Bridgestone Corporation Steel cord for the reinforcement of a rubber article and tire
WO2003069055A1 (fr) 2002-02-14 2003-08-21 N.V. Bekaert S.A. Cable d'acier compact

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
ANONYMOUS: "Steel cords of the 1+6+12-type", RESEARCH DISCLOSURE, MASON PUBLICATIONS, HAMPSHIRE, GB, vol. 343, no. 70, 1 November 1992 (1992-11-01), XP007118346, ISSN: 0374-4353 *
BOURGOIS LUC: "Tire Reinforcement and Tire Performance, ASTM STP", 1979, AMERICAN SOCIETY FOR TESTING AND MATERIALS, article "Survey of Mechanical Properties of Steel Cord and Related Test Methods", pages: 694

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9840808B2 (en) 2012-02-27 2017-12-12 Gripple Limited Multiple layer wire strand
KR20200023399A (ko) * 2017-06-27 2020-03-04 베카에르트 어드밴스드 코드즈 알테 엔브이 폴리머 물품의 보강을 위한 보강 스트랜드
KR102653649B1 (ko) 2017-06-27 2024-04-03 베카에르트 어드밴스드 코드즈 알테 엔브이 폴리머 물품의 보강을 위한 보강 스트랜드

Also Published As

Publication number Publication date
EA201300815A1 (ru) 2013-11-29
BR112013017567A2 (pt) 2016-10-11
EA024603B9 (ru) 2018-04-30
BR112013017567B1 (pt) 2020-09-01
EA024603B1 (ru) 2016-10-31

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