EP1708841A1 - Diamond cutting belt - Google Patents

Diamond cutting belt

Info

Publication number
EP1708841A1
EP1708841A1 EP04702467A EP04702467A EP1708841A1 EP 1708841 A1 EP1708841 A1 EP 1708841A1 EP 04702467 A EP04702467 A EP 04702467A EP 04702467 A EP04702467 A EP 04702467A EP 1708841 A1 EP1708841 A1 EP 1708841A1
Authority
EP
European Patent Office
Prior art keywords
rubber
core
cutting
belt
diamonds
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP04702467A
Other languages
German (de)
French (fr)
Inventor
Harald Ramfjord
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Global Tool Management AS
Original Assignee
Global Tool Management AS
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 Global Tool Management AS filed Critical Global Tool Management AS
Publication of EP1708841A1 publication Critical patent/EP1708841A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D61/00—Tools for sawing machines or sawing devices; Clamping devices for these tools
    • B23D61/18—Sawing tools of special type, e.g. wire saw strands, saw blades or saw wire equipped with diamonds or other abrasive particles in selected individual positions
    • B23D61/185—Saw wires; Saw cables; Twisted saw strips

Definitions

  • the present invention is related to a diamond cutting belt for use in cutting by sawing of structures. It is well known to use a cutting device comprising a diamond wire to cut steel structures such as offshore platform as well as other structures offshore, nuclear power stations etc. when time has come to remove the structures for reasons such as removing ship wracks from the seabed and offshore platforms.
  • the diamond wires used often have comprised a core a steel rope provided with steel pearls having synthetic diamonds as the grinding tool. Securement means for the pearls are used as spacers between the pearls.
  • the wires are interconnected to a continuous loop in a mechanical connection means or the wire as such is weaved to establish the continuous loop.
  • a sawing jig or apparatus is adapted to pull the diamond wire loop continpusly while being forced against a structure to be cut.
  • the loop thereby being guided around a number of wheels on the jig, and the sawing jig being coninously fed towards the structure to be cut.
  • the method and structure for cutting with a diamond wire will result in the steel wire being extended after passing the wheels several times. Wheels may have diameters from about 250 mm to 500 mm.
  • Wheels may have diameters from about 250 mm to 500 mm.
  • the result is that the steel wire has experienced an extension which causes telescoping of the diamond pearls. This means that the lifetime of a diamond wire is as such not dependent on the abrasion of the diamonds as such, but on the extension of the diamond wire. For large structures this may mean active cutting times from between 24 and 48 hours.
  • a rubber core 1 comprises carbon reinforcements embedded in rubber.
  • the rubber core 1 extends through bead cores 2 provided with a number of diamond covers 6, the diamond surfaces being part of circular cylinders which as such act as the cutting medium. Between each bead core 2 are arranged rubber spacers 5.
  • the bead cores 2 and the rubber spacers 5 comprise slots 7 and 8 through which the rubber belts 3 extend.
  • the rubber core 1, bead cores 2, rubber spacers 5 and rubber belts 3 have a close fit and are produced as a continuous belt or wire.
  • a section of the cutting belt thereafter is vulcanized to an endless loop for use in a sawing jig by cutting structures.
  • Such loops may be produced from cutting belts having diameters such as 10, 15, 20 mm or more.
  • the length of the loops may be produced depending on the requirements for each cutting job to be performed. As such the length of the loops may be produced in lengths from 1 m to 600 m. In use the cutting belt may have a speed of from about 10 to about 25 m/sec.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)

Abstract

Cutting belt for the use in cutting structures by sawing, said belt comprising diamonds for the cutting action, comprising a reinforced, continous rubber core (1), alternating a bead core (2) having an outer surface (6) comprising diamonds and a rubber spacer (5) positioned on said rubber core (1), a number of rubber belts (3) comprising reinforcements (4) extending through corresponding openings (7, 8) in all the bead cores (2) respectively the rubber spacers (5), said belt being vulcanized to a closed loop, maintaining the relative positions between the rubber core (1), the bead cores (2), the rubber spacers (5) and the rubber belts (3).

Description

Diamond Cutting Belt
The present invention is related to a diamond cutting belt for use in cutting by sawing of structures. It is well known to use a cutting device comprising a diamond wire to cut steel structures such as offshore platform as well as other structures offshore, nuclear power stations etc. when time has come to remove the structures for reasons such as removing ship wracks from the seabed and offshore platforms. The diamond wires used often have comprised a core a steel rope provided with steel pearls having synthetic diamonds as the grinding tool. Securement means for the pearls are used as spacers between the pearls. The wires are interconnected to a continuous loop in a mechanical connection means or the wire as such is weaved to establish the continuous loop. A sawing jig or apparatus is adapted to pull the diamond wire loop continpusly while being forced against a structure to be cut. The loop thereby being guided around a number of wheels on the jig, and the sawing jig being coninously fed towards the structure to be cut. The method and structure for cutting with a diamond wire will result in the steel wire being extended after passing the wheels several times. Wheels may have diameters from about 250 mm to 500 mm. The result is that the steel wire has experienced an extension which causes telescoping of the diamond pearls. This means that the lifetime of a diamond wire is as such not dependent on the abrasion of the diamonds as such, but on the extension of the diamond wire. For large structures this may mean active cutting times from between 24 and 48 hours. The need for development of diamonds wires without the disadvantages mentioned above therefore exists with the objective to develop a diamond wire with zero extension during the lifetime of the diamonds. This is achieved with the diamond wire according to the present invention as defined by the features stated in the patent claims. The only figure in the drawing discloses in a perspective a section of the cutting belt according to the present invention. A rubber core 1 comprises carbon reinforcements embedded in rubber. The rubber core 1 extends through bead cores 2 provided with a number of diamond covers 6, the diamond surfaces being part of circular cylinders which as such act as the cutting medium. Between each bead core 2 are arranged rubber spacers 5. Connecting the bead cores 2 with each other and the intervening rubber spacers 5 are a number of rubber belts 3, preferably 4 rubber belts, all comprising embedded carbon reinforcements 4. The bead cores 2 and the rubber spacers 5 comprise slots 7 and 8 through which the rubber belts 3 extend. The rubber core 1, bead cores 2, rubber spacers 5 and rubber belts 3 have a close fit and are produced as a continuous belt or wire. A section of the cutting belt thereafter is vulcanized to an endless loop for use in a sawing jig by cutting structures. Such loops may be produced from cutting belts having diameters such as 10, 15, 20 mm or more. The length of the loops may be produced depending on the requirements for each cutting job to be performed. As such the length of the loops may be produced in lengths from 1 m to 600 m. In use the cutting belt may have a speed of from about 10 to about 25 m/sec.

Claims

1. Cutting belt for the use in cutting structures by sawing, said belt comprising diamonds for the cutting action, characterised in that it comprises a reinforced, continous rubber core (1), alternating a bead core (2) having an outer surface (6) comprising diamonds and a rubber spacer (5) positioned on said rubber core (1), a number of rubber belts (3) comprising reinforcements (4) extending through corresponding openings (7, 8) in all the bead cores (2) respectively the rubber spacers (5), said belt being vulcanized to a closed loop, maintaining the relative positions between the rubber core (1), the bead cores (2), the rubber spacers (5) and the rubber belts (3).
EP04702467A 2004-01-15 2004-01-15 Diamond cutting belt Withdrawn EP1708841A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/NO2004/000010 WO2005068122A1 (en) 2004-01-15 2004-01-15 Diamond cutting belt

Publications (1)

Publication Number Publication Date
EP1708841A1 true EP1708841A1 (en) 2006-10-11

Family

ID=34793468

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04702467A Withdrawn EP1708841A1 (en) 2004-01-15 2004-01-15 Diamond cutting belt

Country Status (4)

Country Link
EP (1) EP1708841A1 (en)
JP (1) JP2007518580A (en)
CN (1) CN1905977A (en)
WO (1) WO2005068122A1 (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4945889A (en) * 1987-12-11 1990-08-07 W. F. Myers Company, Inc. Belt-configured saw for cutting slots into stones having a poly-crystalline diamond cutting surface
JPH03281117A (en) * 1990-03-30 1991-12-11 Mitsubishi Materials Corp Wire saw
BE1007185A3 (en) * 1993-06-22 1995-04-18 Diamant Boart Sa Diamond cable, manufacturing method of cable and device for implementing the method.
JP2876191B2 (en) * 1995-06-28 1999-03-31 大阪ダイヤモンド工業株式会社 Diamond wire saw
US6310060B1 (en) * 1998-06-24 2001-10-30 Warner-Lambert Company 2-(4-bromo or 4-iodo phenylamino) benzoic acid derivatives and their use as MEK inhibitors
DE19748809A1 (en) * 1997-11-05 1999-05-06 Hilti Ag Handheld cutter
SE513484C2 (en) * 1998-01-21 2000-09-18 Hagby Asahi Ab Saw strap and concrete saw

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2005068122A1 *

Also Published As

Publication number Publication date
CN1905977A (en) 2007-01-31
WO2005068122A1 (en) 2005-07-28
JP2007518580A (en) 2007-07-12

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