WO2003018239A1 - Soudage d'une piece d'usure sur une piece metallique - Google Patents

Soudage d'une piece d'usure sur une piece metallique Download PDF

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Publication number
WO2003018239A1
WO2003018239A1 PCT/SE2002/001546 SE0201546W WO03018239A1 WO 2003018239 A1 WO2003018239 A1 WO 2003018239A1 SE 0201546 W SE0201546 W SE 0201546W WO 03018239 A1 WO03018239 A1 WO 03018239A1
Authority
WO
WIPO (PCT)
Prior art keywords
welding
piece
wearing
work piece
welding wire
Prior art date
Application number
PCT/SE2002/001546
Other languages
English (en)
Inventor
Steinar Gustavsen
Original Assignee
Optiweld 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 Optiweld Ab filed Critical Optiweld Ab
Publication of WO2003018239A1 publication Critical patent/WO2003018239A1/fr
Priority to SE0400457A priority Critical patent/SE0400457L/xx

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/0026—Arc welding or cutting specially adapted for particular articles or work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/24—Selection of soldering or welding materials proper
    • B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
    • B23K35/3033—Ni as the principal constituent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/08—Non-ferrous metals or alloys
    • B23K2103/14—Titanium or alloys thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/16—Composite materials, e.g. fibre reinforced
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/18—Dissimilar materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
    • B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
    • B23K31/025—Connecting cutting edges or the like to tools; Attaching reinforcements to workpieces, e.g. wear-resisting zones to tableware

Definitions

  • the present invention generally relates to welding. More particularly, the present invention relates to a method and an arrangement for welding of a wearing piece to a metal work piece, and to a use of a nickel based welding wire.
  • Brazing of a hard metal wearing piece to a steel work piece has a lot of disadvantages. Brazing is usually performed in an oven, by a high frequency brazing or under a gas flame, which heats both the steel work piece and the hard metal wearing piece as well as the brazing material.
  • the surface of a steel work piece that is to be brazed needs to be purified and grooves need to be milled into it to provide reasonable adherence of the hard metal, further the surface needs to be perfectly planar.
  • a flux agent or a protective gas is usually used during brazing.
  • An object of the present invention is to overcome the above- mentioned disadvantages when applying a wearing piece to a metal work piece .
  • a less amount of wearing material such as hard metal
  • a more durable wearing surface is achieved, providing a lower cost for a hard metal reinforced product.
  • a welded joint less heat disperse into a work piece compared to a brazed joint, providing less stress on the joint.
  • a brazed joint has lower structural strength than a welded joint.
  • a spot welded joint has lower structural strength than a joint welded by one of the following techniques: TIG, MIG, MIG/MAG and plasma transferred arc.
  • a joint welded by the MIG technique may be obtained under very low temperatures, which is important when welding thin parts of hard metal.
  • welding of a joint is a less complex manufacturing method of available products, compared to brazing of a joint.
  • a welding process may be performed by an uncomplicated automated welding process.
  • a welding process needs less complex machining to provide a ready product, compared to a brazing process.
  • Oxide on a surface has to be removed before welding is performed, but the surface need not be planar.
  • Fig. 1 schematically shows a plan view of a hard metal wearing piece applied to a steel work piece
  • Fig. 2 shows a cut along the line II-II in Fig. 1;
  • Fig. 3 schematically shows a grinded hard metal wearing piece
  • Fig. 4 schematically shows a saw tool
  • Fig. 5 shows a side view of a cut along the line V-V in Fig. 4.
  • a steel work tool such as a debarking tool 1, a bore crown or a saw tooth, wears out fast in an industrial environment due to a large amount of use.
  • a wearing piece 2 of a harder material than steel By applying a wearing piece 2 of a harder material than steel on the parts of the work tool 1 that are subject to wear a more durable work tool is obtained.
  • Hard metal and materials having similar properties such as materials sold under the trademark Stellite, are materials that are harder than steel and are regularly used as wearing materials.
  • Hard metal contrary to Stellite, comprises above all wolfram carbide (WC) to obtain its hardness.
  • the wearing material comprises at least of 50% wolfram carbide, more preferably at least 80% wolfram carbide and most preferably at least 95% wolfram carbide.
  • Stellite or other materials having similar properties may alternatively be used with a slightly less wearing resistance compared to hard metal.
  • the wearing piece 2 is securely fastened to the work tool 1. It is due to the choice of welding wire material that it is possible to weld a hard metal to steel.
  • the welding wire consists of at least 95% nickel, preferably at least 99% nickel and more preferably at least 99.4% nickel.
  • the welding wire may contain trace elements such as: chrome (Cr), cobalt (Co), manganese (Mn), iron (Fe), phosphorous (P), silicon (Si), carbon (C), copper (Cu), sulfur (S) and titanium (Ti) .
  • Cobalt may further be added to the welding wire as an additive. With a content of 0.05-0.3% cobalt, preferably 0.1-0.2% cobalt and more preferably about 0.12% cobalt in the welding wire an improved joint is obtained.
  • manganese may be added to the welding wire as an additive. With a content of 0.05-0.3% manganese, preferably 0.1-0.2% manganese and more preferably about 0.14% manganese in the welding wire an improved joint is obtained.
  • a further additive that may be useful is copper.
  • copper With a contents of 0.05-2% copper, preferably 0.1-1% copper and more preferably about 0.5% copper in the welding wire a lower melting point of the joint is obtained. Further, the cooling period is extended, obtaining a reduced tension, with such an additive.
  • the hard metal wearing piece 2 welded to the steel work piece 1 may now easily be grinded to provide a sharp wearing piece 2' for e.g. debarking, drilling or sawing.
  • a saw tool comprises a saw blade 4 with an exchangeable saw tooth 5.
  • the saw blade 4 is made of steel and the saw tooth 5 of hard metal or of a material having similar properties, such as Stellite.
  • hard metal comprises above all wolfram carbide (WC) and cobalt (Co) to obtain its hardness.
  • the saw tooth 5 is securely fastened to the saw blade 4. It is due to the choice of welding wire material that it is possible to weld a hard metal to steel. The choice of material is identical to that described above in the first embodiment of the present invention.
  • Welding as described above may be performed by one of the following types: TIG (Tungsten Inert Gas), MIG (Metal Inert Gas), MIG/MAG (gas metal arc welding) and plasma transferred arc. It is also possible to utilize the newly developed techniques where plasma transferred arc is combined with MIG or where laser is combined with MIG.
  • TIG Transmission Inert Gas
  • MIG Metal Inert Gas
  • MIG/MAG gas metal arc welding
  • plasma transferred arc is combined with MIG or where laser is combined with MIG.
  • Each welding process is easily performed as the work piece as well as the wearing piece may be of room temperature when the welding process is begun.
  • the traditional initial melting of the work piece and the wearing piece, during welding is not performed, i.e. the welding process has some resemblance to braze welding. Further, the welding process may easily be performed by an automatic welding machine.
  • a welding electrode is held at an angle of approximately 50-70° to the work piece, preferably at an angle of around 60°.
  • the welding arc is ignited against the wearing piece and when welding the wearing piece to a thicker work piece the welding arc is ignited against the work piece.
  • the temperature in the work piece and the welding piece should be high enough to provide wetting of surfaces, which the nickel based welding wire is to be welded to, prior to applying the nickel based welding wire.
  • the welding wire is applied at an angle of approximately 15-30°, preferably at an angle of around 15°, and is gently brought into the welding arc against the wetted surfaces until a melt of nickel arise. Thereafter the thread is moved in a continuous process such that the nickel flow out and forms a joint.
  • a protective gas should flow before the arc is ignited and after the arc is extinguished.
  • the electrode may be applied at an angle of 90° to the work piece.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Arc Welding In General (AREA)

Abstract

La présente invention concerne un procédé de soudage d'une pièce d'usure sur une pièce métallique. Cette pièce d'usure est réalisée dans un métal dur ou un matériau aux propriétés similaires, tel qu'un matériau commercialisé sous la marque Stellite. Ce procédé consiste: - à appliquer la pièce d'usure (2; 5) sur la pièce métallique (1; 4) puis à appliquer un fil-électrode à base de nickel (3; 6) sur une surface de contact au niveau d'un joint entre cette pièce d'usure et cette pièce métallique, et enfin à souder cette pièce d'usure sur cette pièce métallique par soudage du joint. Cette soudure est réalisée par une des techniques suivantes: TIG, MIG, MIG/MAG et plasma à arc transféré.
PCT/SE2002/001546 2001-08-31 2002-08-30 Soudage d'une piece d'usure sur une piece metallique WO2003018239A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE0400457A SE0400457L (sv) 2001-08-31 2004-02-26 Svetsning av ett slitstycke till ett metallarbetsstycke

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0102901-6 2001-08-31
SE0102901A SE0102901D0 (sv) 2001-08-31 2001-08-31 Welding of a wearing piece to a metal work piece

Publications (1)

Publication Number Publication Date
WO2003018239A1 true WO2003018239A1 (fr) 2003-03-06

Family

ID=20285191

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2002/001546 WO2003018239A1 (fr) 2001-08-31 2002-08-30 Soudage d'une piece d'usure sur une piece metallique

Country Status (2)

Country Link
SE (1) SE0102901D0 (fr)
WO (1) WO2003018239A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006030661B4 (de) * 2006-07-04 2009-02-05 Profiroll Technologies Gmbh Hartmetallisches Profilwalzwerkzeug
WO2024015523A1 (fr) * 2022-07-15 2024-01-18 Nicholson Manufacturing Ltd. Pointe de couteau à affutâge automatique

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4628178A (en) * 1984-05-29 1986-12-09 Sumitomo Electric Industries, Ltd. Tool for warm and hot forgings and process for manufacturing the same
JPH01241376A (ja) * 1988-03-18 1989-09-26 Hitachi Koki Co Ltd 耐摩耗・耐衝撃ビットの製造方法
US5413016A (en) * 1993-04-05 1995-05-09 Ledermann Gmbh Method for manufacturing cutting tools and cutting tools made thereby
JPH07116919A (ja) * 1992-11-26 1995-05-09 Hiroshi Iwata 超硬合金チップソーの製造方法
EP0899051A1 (fr) * 1997-07-17 1999-03-03 Daido Tokushuko Kabushiki Kaisha Alliages pour jonctions avec du carbure cémenté, et matériaux composites obtenus avec ceux-ci

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4628178A (en) * 1984-05-29 1986-12-09 Sumitomo Electric Industries, Ltd. Tool for warm and hot forgings and process for manufacturing the same
JPH01241376A (ja) * 1988-03-18 1989-09-26 Hitachi Koki Co Ltd 耐摩耗・耐衝撃ビットの製造方法
JPH07116919A (ja) * 1992-11-26 1995-05-09 Hiroshi Iwata 超硬合金チップソーの製造方法
US5413016A (en) * 1993-04-05 1995-05-09 Ledermann Gmbh Method for manufacturing cutting tools and cutting tools made thereby
EP0899051A1 (fr) * 1997-07-17 1999-03-03 Daido Tokushuko Kabushiki Kaisha Alliages pour jonctions avec du carbure cémenté, et matériaux composites obtenus avec ceux-ci

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 135, no. 77 20 December 1989 (1989-12-20) *
PATENT ABSTRACTS OF JAPAN vol. 1995, no. 8 29 September 1995 (1995-09-29) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006030661B4 (de) * 2006-07-04 2009-02-05 Profiroll Technologies Gmbh Hartmetallisches Profilwalzwerkzeug
WO2024015523A1 (fr) * 2022-07-15 2024-01-18 Nicholson Manufacturing Ltd. Pointe de couteau à affutâge automatique

Also Published As

Publication number Publication date
SE0102901D0 (sv) 2001-08-31

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