EP 0703017 A3 19961113 - Method for the production of longitudinally seam welded metal tubes
Title (en)
Method for the production of longitudinally seam welded metal tubes
Title (de)
Verfahren zur Herstellung eines längsnahtgeschweissten Metallrohres
Title (fr)
Procédé de fabrication de tuyaux métalliques soudés longitudinalement
Publication
Application
Priority
DE 4434134 A 19940924
Abstract (en)
[origin: EP0703017A2] The method concerns production of a metal tube out of a strip which is given a tubular form with a longitudinal slit, and is completed by laser welding. It is characterised by the following features: a) immediately in front of the welding point, the tube surface is gripped by a first tool which holds the opposing strip edges in contact with one another; b) immediately after the welding point, the tube surface is gripped by a second tool which levers the weld seam free, and keeps the joint free of forces; c) immediately after the second tool, the tube is gripped by the jaws of a clamping unit which conveys the tube without rotation.
IPC 1-7
IPC 8 full level
G02B 6/44 (2006.01); B21C 37/08 (2006.01); B21C 37/083 (2006.01); B23K 26/21 (2014.01); B23K 37/053 (2006.01); B23K 101/06 (2006.01)
CPC (source: EP KR US)
B21C 37/08 (2013.01 - KR); B21C 37/0822 (2013.01 - EP US)
Citation (search report)
- [A] DE 4118004 A1 19921203 - KABELMETAL ELECTRO GMBH [DE]
- [A] EP 0115441 A2 19840808 - OLIN CORP [US]
- [XA] PATENT ABSTRACTS OF JAPAN vol. 009, no. 172 (M - 397) 17 July 1985 (1985-07-17)
- [PA] PATENT ABSTRACTS OF JAPAN vol. 94, no. 010
- [A] PATENT ABSTRACTS OF JAPAN vol. 008, no. 035 (M - 276) 15 February 1984 (1984-02-15)
Designated contracting state (EPC)
AT CH DE DK ES FR GB GR IT LI NL SE
DOCDB simple family (publication)
EP 0703017 A2 19960327; EP 0703017 A3 19961113; EP 0703017 B1 20000419; AT E191868 T1 20000515; AU 3281995 A 19960404; AU 686443 B2 19980205; CA 2158911 A1 19960325; CN 1068533 C 20010718; CN 1128685 A 19960814; DE 4434134 A1 19960328; DE 59508191 D1 20000525; DK 0703017 T3 20000710; ES 2145192 T3 20000701; FI 110997 B 20030515; FI 954503 A0 19950922; FI 954503 A 19960325; GR 3033892 T3 20001130; JP 3828599 B2 20061004; JP H08192222 A 19960730; KR 960010109 A 19960420; NO 953752 D0 19950922; NO 953752 L 19960325; RU 2139159 C1 19991010; US 5613631 A 19970325
DOCDB simple family (application)
EP 95114295 A 19950912; AT 95114295 T 19950912; AU 3281995 A 19950922; CA 2158911 A 19950922; CN 95117208 A 19950922; DE 4434134 A 19940924; DE 59508191 T 19950912; DK 95114295 T 19950912; ES 95114295 T 19950912; FI 954503 A 19950922; GR 20000401577 T 20000705; JP 24481595 A 19950922; KR 19950031125 A 19950921; NO 953752 A 19950922; RU 95116447 A 19950922; US 52151495 A 19950830