GB1500964A – Apparatus for welding pipelines
– Google Patents
GB1500964A – Apparatus for welding pipelines
– Google Patents
Apparatus for welding pipelines
Info
Publication number
GB1500964A
GB1500964A
GB12865/75A
GB1286575A
GB1500964A
GB 1500964 A
GB1500964 A
GB 1500964A
GB 12865/75 A
GB12865/75 A
GB 12865/75A
GB 1286575 A
GB1286575 A
GB 1286575A
GB 1500964 A
GB1500964 A
GB 1500964A
Authority
GB
United Kingdom
Prior art keywords
pipe
laser
welding
line
platform
Prior art date
1974-04-11
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.)
Expired
Application number
GB12865/75A
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.)
BOC Ltd
Saipem SpA
Original Assignee
BOC Ltd
Saipem SpA
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.)
1974-04-11
Filing date
1975-03-27
Publication date
1978-02-15
1974-04-11
Priority claimed from IT2127974A
external-priority
patent/IT1009818B/en
1975-03-13
Priority claimed from IT2122275A
external-priority
patent/IT1049367B/en
1975-03-27
Application filed by BOC Ltd, Saipem SpA
filed
Critical
BOC Ltd
1978-02-15
Publication of GB1500964A
publication
Critical
patent/GB1500964A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
B23K37/053—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor
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
B23K26/00—Working by laser beam, e.g. welding, cutting or boring
B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
B23K26/067—Dividing the beam into multiple beams, e.g. multifocusing
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
B23K26/00—Working by laser beam, e.g. welding, cutting or boring
B23K26/20—Bonding
B23K26/21—Bonding by welding
B23K26/24—Seam welding
B23K26/28—Seam welding of curved planar seams
B23K26/282—Seam welding of curved planar seams of tube sections
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
B23K2101/00—Articles made by soldering, welding or cutting
B23K2101/04—Tubular or hollow articles
B23K2101/10—Pipe-lines
Y—GENERAL 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
Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
Y10T29/00—Metal working
Y10T29/53—Means to assemble or disassemble
Abstract
1500964 Welding pipes BOC Ltd 27 March 1975 [11 April 1974 13 March 1975] 12865/75 Heading B3R Welding apparatus for forming continuously welded pipe-line from successive lengths of pipe by butt welding the lengths of pipe end-toend comprises a platform 12 displaceably mounted longitudinally on rails 14 in a sea going or land transporter means, the platform carrying a clamping device 22 for supporting and securing the end of the pipe-line 8 with respect to the platform and which also carries a pipe length mounting device 20 adjacent the welding station and a head stock 18 movable relative to the platform 12 and which carries a centering device 40 for the pipe length and which through the action of the head stock by way of the hydraulic jacks 34, urges the pipe length into abutment with the fixed pipe-line. A laser 16 mounted on the platform 12 cants a beam coaxial or parallel to the axis of the pipe-line and by way of suitably mounted reflecting surfaces 44, 42, 52, and 60 the beam is arranged to impinge on the abutting ends of the pipe, either radially inwardly or outwardly so as to weld the pipe length to the pipe-line by fusion from either inside or outside, or with the aid of a further laser simultaneously from both inside and outside. Various means are described for ensuring the alignment and abutment between the pipe and pipe-line. In Fig. 3 there is shown an internal coupling means 64 which may be in the form of a pneumatic bag holding the two portions in coaxial alignment. In Fig. 5 (not shown) an external clamping ring (92) is used. Figs. 8 and 10 (not shown) relate to internal and external radially located fluid pressure members respectively in separate devices one in each pipe portion. The latter devices may also be used for correcting deformity of the pipe ends to ensure a substantially circular joint. The laser used in the welding operation is of the gas shielded, carbon dioxide laser medium type using the infra-red portion of the spectrum. In order to permit visual alignment, the laser or any laser of the apparatus is supplemented by an auxiliary laser which produces radiation in the visible spectrum and projects its beam along the beam of the carbon dioxide laser. In addition to the use of the laser internal welding of the pipe sections the external welds could be carried out by MIG or TIG welding processes or by unshielded (open) arc. The apparatus may additionally include means 24 for crack detecting in the finished weld and further means 26 may be provided for coating the finished welded pipe as it is layed subsequent to the welding of the respective pipes. In the embodiment shown in Fig. 12 the laser beam 48 is directed in a plane transverse to the axis of the pipe-line and offset from said axis and the beam is subsequently directed on to the pipe joint region by a series of mirrors one associated with each of four slideways 120 located in said plane and surrounding the pipe, the mirrors being displaceable and pivotable to direct the beam in four successive stages on to the pipe joint to form the weld.
GB12865/75A
1974-04-11
1975-03-27
Apparatus for welding pipelines
Expired
GB1500964A
(en)
Applications Claiming Priority (2)
Application Number
Priority Date
Filing Date
Title
IT2127974A
IT1009818B
(en)
1974-04-11
1974-04-11
EQUIPMENT FOR LASER WELDING OF PIPES PAR TICULARLY SUITABLE TO BE APPLIED ON PIPE-LAYING VESSELS
IT2122275A
IT1049367B
(en)
1975-03-13
1975-03-13
Laser beam pipe welding – by mirrors reflecting beam radially on pipe joint in circumferential sequence
Publications (1)
Publication Number
Publication Date
GB1500964A
true
GB1500964A
(en)
1978-02-15
Family
ID=26327832
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB12865/75A
Expired
GB1500964A
(en)
1974-04-11
1975-03-27
Apparatus for welding pipelines
Country Status (18)
Country
Link
US
(1)
US4001543A
(en)
JP
(1)
JPS5236944B2
(en)
AR
(1)
AR210467A1
(en)
BR
(1)
BR7502150A
(en)
CA
(1)
CA1025951A
(en)
DE
(3)
DE2559532C3
(en)
DK
(1)
DK146013C
(en)
EG
(1)
EG12034A
(en)
ES
(1)
ES436559A1
(en)
FI
(1)
FI68184C
(en)
FR
(1)
FR2274390A1
(en)
GB
(1)
GB1500964A
(en)
IE
(1)
IE43297B1
(en)
LU
(1)
LU72262A1
(en)
NL
(1)
NL163976C
(en)
NO
(3)
NO142860C
(en)
SE
(1)
SE401631B
(en)
YU
(2)
YU37487B
(en)
Families Citing this family (53)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US4088865A
(en)
*
1976-01-02
1978-05-09
United Technologies Corporation
Laser beam welding apparatus
US4080525A
(en)
*
1976-03-24
1978-03-21
United Technologies Corporation
Laser welding apparatus for pipe
FR2389446B1
(en)
*
1977-05-02
1981-11-20
Thome Paul
JPS5425862A
(en)
*
1977-07-29
1979-02-27
Mitsubishi Heavy Ind Ltd
Inside diameter measuring device
FR2420394A1
(en)
*
1978-03-21
1979-10-19
Glacier Metal Co Ltd
LASER BEAM WELDING APPARATUS AND PROCESS FOR MAKING HALF-BEARINGS
WO1980001419A1
(en)
*
1979-01-04
1980-07-10
United Technologies Corp
A reflective beam rotator
US4290303A
(en)
*
1979-07-03
1981-09-22
Westinghouse Electric Corp.
Apparatus for measuring surface scratches on a tube
JPS5641091A
(en)
*
1979-09-11
1981-04-17
Toshiba Corp
Welding method of pipe
JPS5674393A
(en)
*
1979-11-26
1981-06-19
Toshiba Corp
Housing welding method and its equipment for pressure vessel
JPS56116640U
(en)
*
1980-02-08
1981-09-07
IT1167781B
(en)
*
1981-06-02
1987-05-13
Agip Nucleare Spa
AUTOMATIC AND PROGRAMMABLE METHOD OF ASSEMBLY AND WELDING OF SPACER PLATES FOR HAZELNUT ELEMENTS OF FAST NUCLEAR REACTORS AND PLANT FOR ITS IMPLEMENTATION
JPS58122405A
(en)
*
1981-09-18
1983-07-21
Mitsubishi Heavy Ind Ltd
Measuring device of internal diameter
US4591294A
(en)
*
1982-03-31
1986-05-27
Nis Engineering Limited
Welding and laying pipelines
DE3230595A1
(en)
*
1982-08-17
1984-02-23
Siemens AG, 1000 Berlin und 8000 München
METHOD FOR WELDING ENDLESS METAL TAPES
US4527040A
(en)
*
1983-06-16
1985-07-02
The United States Of America As Represented By The Secretary Of The Navy
Method of laser welding
US4633870A
(en)
*
1985-06-26
1987-01-06
Sauer Jude S
Apparatus for effecting anastomosis of tubular tissue by laser welding
DE3604677A1
(en)
*
1985-11-26
1987-05-27
Festo Kg
METHOD AND HOLDING DEVICE FOR THE PRODUCTION OF RODS CONSISTING OF RING ELEMENTS
IT1190581B
(en)
*
1986-05-29
1988-02-16
Fiat Auto Spa
PROCEDURE FOR HEAD WELDING WITH THE USE OF A LASER BAND TWO PIECES OF METAL MATERIALS DISSIMILE IN PARTICULAR PIECES OF STEEL WITH MEDIUM OR HIGH CARBONIC CONTENT
KR100281023B1
(en)
*
1992-04-13
2001-02-01
가나이 쓰도무
Long tubular grounding vessel for gas insulated electrical equipment and laser welding equipment for manufacturing the same
DE9210411U1
(en)
*
1992-08-04
1992-10-22
Recycling-Chemie-Niederrhein Gmbh, 4223 Voerde, De
US5514849A
(en)
*
1993-02-17
1996-05-07
Electric Power Research Institute, Inc.
Rotating apparatus for repairing damaged tubes
US5653897A
(en)
*
1993-02-17
1997-08-05
Electric Power Research Institute
Rotating fiber optic coupler for high power laser welding applications
US5430270A
(en)
*
1993-02-17
1995-07-04
Electric Power Research Institute, Inc.
Method and apparatus for repairing damaged tubes
US5593605A
(en)
*
1994-10-11
1997-01-14
Crc-Evans Pipeline International, Inc.
Internal laser welder for pipeline
FR2735056B1
(en)
*
1995-06-09
1997-08-22
Bouygues Offshore
INSTALLATION FOR WORKING A ZONE OF A TUBE BY MEANS OF A LASER BEAM AND APPLICATION TO TUBES OF A PIPING ON A BARGE LAYING AT SEA OR OF RECOVERING FROM THIS PIPING.
US5796069A
(en)
*
1997-01-10
1998-08-18
Crc-Evans Pipeline International, Inc.
Arc and laser welding process for pipeline
JP4564245B2
(en)
*
2003-07-25
2010-10-20
新日本製鐵株式会社
Super high strength welded joint with excellent low temperature cracking property of weld metal and method for producing high strength welded steel pipe
EP1504829B1
(en)
*
2003-08-05
2006-06-07
Lasag Ag
Process of manufacturing a medical needle
CA2463409A1
(en)
*
2004-04-02
2005-10-02
Servo-Robot Inc.
Intelligent laser joining head
US20060213884A1
(en)
*
2005-03-23
2006-09-28
Button International Co., Ltd.
Multi-angular laser processing apparatus
CN1992461B
(en)
*
2005-12-30
2010-05-05
鸿富锦精密工业（深圳）有限公司
Apparatus for cutting insulation layer of electric wire
US20080302539A1
(en)
*
2007-06-11
2008-12-11
Frank’s International, Inc.
Method and apparatus for lengthening a pipe string and installing a pipe string in a borehole
US20090134203A1
(en)
*
2007-11-28
2009-05-28
Frank’s International, Inc.
Methods and apparatus for forming tubular strings
US20090139969A1
(en)
*
2007-11-29
2009-06-04
Global Nuclear Fuel – Americas Llc
Laser welding of castings to minimize distortion
DE102009020146B3
(en)
*
2009-04-08
2010-06-10
V & M Deutschland Gmbh
Connecting ends of steel tubes by orbital welding in laser-light-arc hybrid technology, comprises connecting tube ends with welding positions, and guiding laser- and light arc welding head as tool over guiding ring during welding process
DE102010027638B4
(en)
*
2010-07-19
2012-04-12
Christoph Deininger
Apparatus for processing pipes by means of a laser beam
US20120263541A1
(en)
*
2011-04-15
2012-10-18
Per Lillejordet
Subsea structure for pipe assemblies
US9908197B2
(en)
*
2013-03-15
2018-03-06
Automated Industrial Machinery, Inc.
Wire butt welder with adjustable alignment
CA2854691C
(en)
*
2013-07-03
2017-10-31
Karl H. Moller
Method of making diamond mining core drill bit and reamer
JP6209507B2
(en)
*
2014-12-05
2017-10-04
本田技研工業株式会社
Workpiece assembly method
ES2811908T3
(en)
*
2015-02-24
2021-03-15
Elettrosystem S R L
TWIP steel tubular component laser welding
CN104785974B
(en)
*
2015-04-29
2016-08-17
德清县豪特金属封头制品有限公司
Infrared ray is automatically positioned bonding machine
CN105965190B
(en)
*
2016-06-22
2018-01-30
河源市新天彩科技有限公司
A kind of full-automatic assemble mechanism
RU2630327C1
(en)
*
2016-07-27
2017-09-07
Публичное акционерное общество «Татнефть» имени В.Д. Шашина
Method for connection and disconnection of pipes for bituminous oil extraction and device for laser welding and cutting when implementing method
CN106269356A
(en)
*
2016-09-30
2017-01-04
广州卓迅包装机械有限公司
The automatic positioning method of can seam, Apparatus and system
US11278701B2
(en)
*
2016-10-13
2022-03-22
Lake Region Manufacturing, Inc.
Apparatus including multiple joined hypotubes and method of making same
CN106736178A
(en)
*
2017-01-06
2017-05-31
湖南中佳华悦环保科技有限公司
A kind of column welding tooling
CN107008701A
(en)
*
2017-04-18
2017-08-04
张家港清研再制造产业研究院有限公司
The positioner and method of copper strap wire insulating barrier laser cleaning
CN106975854B
(en)
*
2017-05-12
2018-04-17
东莞市力星激光科技有限公司
The annular pipe fitting connector system and insertion method of a kind of laser-beam welding machine
CN109500504A
(en)
*
2019-01-21
2019-03-22
陕西理工大学
The built-in irregular section cutter device of large-scale pipeline
CN110303308B
(en)
*
2019-07-31
2020-06-12
重庆源阔机械有限公司
Production process of nut tube
GB202010648D0
(en)
*
2020-07-10
2020-08-26
Milano Politecnico
Improvements in the welding together of work-place
RU2759457C1
(en)
*
2020-12-28
2021-11-15
Общество с ограниченной ответственностью «НАУЧНО-ТЕХНИЧЕСКОЕ ОБЪЕДИНЕНИЕ «ИРЭ-Полюс» (ООО НТО «ИРЭ-Полюс»)
Method for orbital laser welding of oil steel pipes, device and system implementing it
Family Cites Families (10)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US2780376A
(en)
*
1955-03-01
1957-02-05
Ralph M Sanders
Machine for continuously laying and joining pipe sections
FR1361361A
(en)
*
1963-03-06
1964-05-22
Biraghi Sa
Automatic pipe butt welding machine
US3387761A
(en)
*
1966-02-10
1968-06-11
Kenneth L. Pickard
Internal alignment clamp
FR1525886A
(en)
*
1966-04-15
1968-05-24
Commissariat Energie Atomique
Method and device for welding massive parts by electron bombardment
US3597578A
(en)
*
1967-03-16
1971-08-03
Nat Res Dev
Thermal cutting apparatus and method
US3483352A
(en)
*
1967-06-08
1969-12-09
United Aircraft Corp
Apparatus for welding large pipes with a beam of charged particles
US3618845A
(en)
*
1969-04-24
1971-11-09
Luther D Totten
Pressure welding apparatus
US3764056A
(en)
*
1971-11-18
1973-10-09
Mc Vean And Barlow Inc
Apparatus for internally welding pipe joints
US3772753A
(en)
*
1972-02-09
1973-11-20
E Sargeant
Arrangement for aligning tubular sections for fabrication
JPS5112292B2
(en)
*
1972-05-30
1976-04-17
1975
1975-03-27
GB
GB12865/75A
patent/GB1500964A/en
not_active
Expired
1975-04-02
IE
IE733/75A
patent/IE43297B1/en
unknown
1975-04-03
YU
YU0850/75A
patent/YU37487B/en
unknown
1975-04-04
ES
ES436559A
patent/ES436559A1/en
not_active
Expired
1975-04-09
BR
BR2733/75A
patent/BR7502150A/en
unknown
1975-04-09
FI
FI751056A
patent/FI68184C/en
not_active
IP Right Cessation
1975-04-10
SE
SE7504144A
patent/SE401631B/en
not_active
IP Right Cessation
1975-04-10
CA
CA224,360A
patent/CA1025951A/en
not_active
Expired
1975-04-10
FR
FR7511247A
patent/FR2274390A1/en
active
Granted
1975-04-10
DK
DK155375A
patent/DK146013C/en
not_active
IP Right Cessation
1975-04-10
LU
LU72262A
patent/LU72262A1/xx
unknown
1975-04-10
NO
NO751277A
patent/NO142860C/en
unknown
1975-04-11
NL
NL7504376.A
patent/NL163976C/en
not_active
IP Right Cessation
1975-04-11
DE
DE2559532A
patent/DE2559532C3/en
not_active
Expired
1975-04-11
DE
DE7511460U
patent/DE7511460U/en
not_active
Expired
1975-04-11
JP
JP50043481A
patent/JPS5236944B2/ja
not_active
Expired
1975-04-11
AR
AR258349A
patent/AR210467A1/en
active
1975-04-11
US
US05/567,107
patent/US4001543A/en
not_active
Expired – Lifetime
1975-04-11
DE
DE7809497U
patent/DE7809497U1/en
not_active
Expired
1975-04-12
EG
EG209/75A
patent/EG12034A/en
active
1979
1979-01-19
NO
NO790190A
patent/NO149643C/en
unknown
1980
1980-03-06
NO
NO80800641A
patent/NO145821C/en
unknown
1980-10-10
YU
YU02603/80A
patent/YU260380A/en
unknown
Also Published As
Publication number
Publication date
NO142860C
(en)
1980-11-05
FI751056A
(en)
1975-10-12
DE2559532A1
(en)
1977-02-03
FI68184B
(en)
1985-04-30
YU37487B
(en)
1984-08-31
DK155375A
(en)
1975-10-12
NO751277L
(en)
1975-10-14
DE2559532C3
(en)
1980-06-26
ES436559A1
(en)
1977-04-16
FI68184C
(en)
1985-08-12
NO145821C
(en)
1982-06-09
NL163976C
(en)
1980-11-17
FR2274390A1
(en)
1976-01-09
IE43297B1
(en)
1981-01-28
NO800641L
(en)
1975-10-14
EG12034A
(en)
1978-06-30
DE2559532B2
(en)
1979-10-11
YU260380A
(en)
1985-03-20
US4001543A
(en)
1977-01-04
NO790190L
(en)
1975-10-14
AU7992875A
(en)
1976-10-14
NO149643C
(en)
1984-05-23
DE2515925B2
(en)
1977-07-07
NO149643B
(en)
1984-02-13
NL7504376A
(en)
1975-10-14
SE7504144L
(en)
1975-12-16
CA1025951A
(en)
1978-02-07
NO142860B
(en)
1980-07-28
NO145821B
(en)
1982-03-01
DE2515925A1
(en)
1975-10-23
DE7511460U
(en)
1978-09-21
LU72262A1
(en)
1976-02-04
DK146013C
(en)
1983-10-17
JPS5236944B2
(en)
1977-09-19
FR2274390B1
(en)
1980-04-25
JPS50143744A
(en)
1975-11-19
YU85075A
(en)
1983-04-27
IE43297L
(en)
1975-10-11
SE401631B
(en)
1978-05-22
DK146013B
(en)
1983-05-24
DE7809497U1
(en)
1978-11-16
AR210467A1
(en)
1977-08-15
NL163976B
(en)
1980-06-16
BR7502150A
(en)
1976-02-10
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Legal Events
Date
Code
Title
Description
1978-06-28
PS
Patent sealed [section 19, patents act 1949]
1981-05-07
732
Registration of transactions, instruments or events in the register (sect. 32/1977)
1989-11-22
PCNP
Patent ceased through non-payment of renewal fee
