WO1990008618A1 - A method for forge welding or the like - Google Patents

A method for forge welding or the like Download PDF

Info

Publication number
WO1990008618A1
WO1990008618A1 PCT/NO1990/000027 NO9000027W WO9008618A1 WO 1990008618 A1 WO1990008618 A1 WO 1990008618A1 NO 9000027 W NO9000027 W NO 9000027W WO 9008618 A1 WO9008618 A1 WO 9008618A1
Authority
WO
WIPO (PCT)
Prior art keywords
corrugations
height
parts
given
joint
Prior art date
Application number
PCT/NO1990/000027
Other languages
English (en)
French (fr)
Inventor
Per H. Moe
Original Assignee
Moe Per H
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 Moe Per H filed Critical Moe Per H
Priority to DE69019168T priority Critical patent/DE69019168D1/de
Priority to EP90903057A priority patent/EP0512982B1/en
Publication of WO1990008618A1 publication Critical patent/WO1990008618A1/en

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/14Preventing or minimising gas access, or using protective gases or vacuum during welding
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/02Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating by means of a press ; Diffusion bonding
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00Stock material or miscellaneous articles
    • Y10S428/922Static electricity metal bleed-off metallic stock
    • Y10S428/9335Product by special process
    • Y10S428/94Pressure bonding, e.g. explosive

Definitions

  • the present invention relates to a method for forge welding or the like of a first and a second metal part, wherein at least one joint is established between opposed bounding surfaces on the two parts to be joined, and wherein preferably a reducing gas is passed through the joint or joints before the parts are pressed together.
  • this joint form provides a number of advantages. For instance, better material properties in the weld are obtained, and testing methods provide more reliable results for the material properties.
  • the form of the joint is simplified, i.e. it becomes simpler to make because oxy/plasma cutting may be used for large joint surfaces instead of turning/milling.
  • the joint becomes better self-centering properties and, besides, one can obtain a triaxial stress condition by forging sections which are not round or axisymmetrical.
  • a further advantage is that the finished weld becomes a better appearance since a smaller upset length is required during the pressing together of the parts. This also results in less danger of buckling during the pressing together.
  • a major advantage of the method according to the invention is that it enables the use of forge welding regardless of the dimension and form of the cross-section.
  • the subject is welding of pipes and bolts.
  • the form of the joint described therein satisfies all conditions for triaxiality in order to close pores in an efficient manner.
  • surface oxides may be removed by means of a reducing gas.
  • the form of the objects to be welded are of less importance, and the heating zone becomes simpler to establish because the distance between the joint surfaces is less.
  • Figure 1 shows perspectively a portion of a rail, the end surface of which is shaped in accordance with the present invention.
  • Figure 2 shows a side view of the end portions of two rails shaped in accordance with the invention before being welded together.
  • Figure 3 shows at a larger scale a vertical section through the circled portion in Figure 2.
  • FIG. 1 It is first referred to Figure 1, where the end portion of a rail 1 is shown.
  • the end surface of the rail is treated in accordance with the present method, i.e. it is provided with corrugations 2, which in this case are all alike and placed at evenly spaced intervals.
  • Figure 2 the rail 1 is shown placed adjacent to a second rail 3 provided with corresponding corrugations.
  • Figure 3 shows the corrugations at a larger scale, the corrugations of the second rail 3 being designated 4.
  • the height of the corrugations 2 and 4 is designated H and h, respectively, and it can be seen that the height difference H minus h is approximately 0.15 H. This difference should lie in the range of 0.05 H to 0.25 H.
  • the magnitude of the height H may in the case shown be about 3 mm. For most applications this height should be larger than 1 mm and preferably lie in the range of 2 - 10 mm.
  • a height less than 1 mm may be used.
  • corrugation heights may be used.
  • a cutting tool made by erosion it is possible to machine pipes and other sections with an accuracy of 2 u.
  • Fixation of work pieces like large pipes and rails may be performed with an accuracy of 0.2 mm.
  • the form of the corrugations makes the work pieces self-centering with an accuracy of 0.02 mm. Therefore, one has-the possibility of choosing a joint which is self-centering and has an accuracy of +- 0.02 mm. With such a good control over the joint form and the self- centering the forge or upset length is reduced, means being currently available for controlling this length with an accuracy of +- 0.1 mm.
  • For work pieces of a height of 200 mm one may therefore e.g.
  • the corrugations in the embodiment shown has a generally triangular cross-section.
  • the apex angle of the corrugations 2 on the rail l is somewhat less than 75°, while the apex angle of the corrugations 4 on the rail 3 is about 90°.
  • the difference between these angles should lie in the range of 10° - 40° and preferably be about 20°.
  • the forge welding may be performed with an upset length of about twice the height difference between the corrugations.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Arc Welding In General (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
PCT/NO1990/000027 1989-02-01 1990-02-01 A method for forge welding or the like WO1990008618A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE69019168T DE69019168D1 (de) 1989-02-01 1990-02-01 Verfahren zum feuerschweissen oder dergleichen.
EP90903057A EP0512982B1 (en) 1989-02-01 1990-02-01 A method for forge welding or the like

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO890419A NO166396C (no) 1989-02-01 1989-02-01 Fremgangsmaate ved smisveising e.l.
NO890419 1989-02-01

Publications (1)

Publication Number Publication Date
WO1990008618A1 true WO1990008618A1 (en) 1990-08-09

Family

ID=19891689

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NO1990/000027 WO1990008618A1 (en) 1989-02-01 1990-02-01 A method for forge welding or the like

Country Status (5)

Country Link
US (1) US5163604A (no)
EP (1) EP0512982B1 (no)
DE (1) DE69019168D1 (no)
NO (1) NO166396C (no)
WO (1) WO1990008618A1 (no)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MY128610A (en) * 2001-12-31 2007-02-28 Shell Int Research Method for interconnecting tubulars by forge welding
US20050225083A1 (en) * 2002-03-01 2005-10-13 Cole Anthony T Pipe system and method for its manufacture
CA2492745C (en) * 2002-07-17 2012-01-03 Shell Canada Limited Forge welding method
EA006405B1 (ru) * 2002-07-17 2005-12-29 Шелл Интернэшнл Рисерч Маатсхаппий Б.В. Кузнечная сварка труб для тяжелых условий работы
CN1668940B (zh) * 2002-07-18 2011-09-07 国际壳牌研究有限公司 管接头的标记
US20060075623A1 (en) * 2004-10-13 2006-04-13 Dan Jones Method of manufacture of metal components
US8727203B2 (en) 2010-09-16 2014-05-20 Howmedica Osteonics Corp. Methods for manufacturing porous orthopaedic implants
US8991656B2 (en) * 2010-10-29 2015-03-31 Welcon Inc. Container
GB201203030D0 (en) 2012-02-22 2012-04-04 Tubefuse Applic B V Forge welding of tubular articles

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1752304A1 (de) * 1968-05-04 1971-05-19 Kabel Metallwerke Ghh Verfahren zur Herstellung einer Schweissverbindung zwischen Werkstuecken aus Kupfer und Aluminium
US3766633A (en) * 1970-12-10 1973-10-23 Kernforschungsanlage Juelich Method of joining metals of different melting points
DE3037518C2 (de) * 1979-10-05 1982-10-14 Hitachi, Ltd., Tokyo Verfahren zum Verbinden zweier Metallgegenstände
WO1983003565A1 (en) * 1982-04-13 1983-10-27 Moe, Per, H. A method for diffusion welding

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB554635A (en) * 1942-01-30 1943-07-13 Leonard Edward Brain A new or improved method of preparing metal sheets for welding and of welding such sheets together
GB8720248D0 (en) * 1987-08-27 1987-10-07 Imi Titanium Ltd Turbines

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1752304A1 (de) * 1968-05-04 1971-05-19 Kabel Metallwerke Ghh Verfahren zur Herstellung einer Schweissverbindung zwischen Werkstuecken aus Kupfer und Aluminium
US3766633A (en) * 1970-12-10 1973-10-23 Kernforschungsanlage Juelich Method of joining metals of different melting points
DE3037518C2 (de) * 1979-10-05 1982-10-14 Hitachi, Ltd., Tokyo Verfahren zum Verbinden zweier Metallgegenstände
WO1983003565A1 (en) * 1982-04-13 1983-10-27 Moe, Per, H. A method for diffusion welding

Also Published As

Publication number Publication date
EP0512982B1 (en) 1995-05-03
NO166396B (no) 1991-04-08
NO166396C (no) 1991-07-17
NO890419L (no) 1990-08-02
DE69019168D1 (de) 1995-06-08
NO890419D0 (no) 1989-02-01
EP0512982A1 (en) 1992-11-19
US5163604A (en) 1992-11-17

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