Title:
WELDING METHOD
Document Type and Number:
WIPO Patent Application WO2004039527
Kind Code:
A3
Abstract:
Two aluminium alloy work-pieces are welded together. Firstly, a portion (2) of each work-piece (1) is prepared, the preparation including the performance of a surface treatment, such as friction stir welding, that results in a region (3) extending from the exterior surface into the work-piece having a grain structure that is finer than the grain structure of the work-piece outside that region. Then the work-pieces are welded together by means of a fusion welding process, such as electron beam welding, that joins the respective prepared portions (2) of the two work-pieces (1). The preparation of the work-pieces is so performed that said region (3) extends into the work-piece to a depth that exceeds the depth of material that is caused to melt during the fusion welding process.
Inventors:
ILYUSHENKO ROSTYSLAV (GB)
MAZIARZ ROBERT JAN (GB)
DAVIES HUW (GB)
MAZIARZ ROBERT JAN (GB)
DAVIES HUW (GB)
Application Number:
PCT/GB2003/004646
Publication Date:
June 17, 2004
Filing Date:
October 28, 2003
Export Citation:
Assignee:
AIRBUS UK LTD (GB)
ILYUSHENKO ROSTYSLAV (GB)
MAZIARZ ROBERT JAN (GB)
DAVIES HUW (GB)
ILYUSHENKO ROSTYSLAV (GB)
MAZIARZ ROBERT JAN (GB)
DAVIES HUW (GB)
International Classes:
B23K9/235; B23K15/00; B23K20/12; B23K20/24; (IPC1-7): B23K9/235; B23K15/00; B23K20/12; C22F1/04
Foreign References:
| EP1162283A2 | 2001-12-12 | |||
| JP2001234308A | 2001-08-31 | |||
| JP2002249860A | 2002-09-06 | |||
| US5211910A | 1993-05-18 | |||
| US20030218052A2 | 2003-11-27 |
Other References:
"Welding of austenitic steel pipes - is carried out after initial cold plastic working", DERWENT, 5 November 1977 (1977-11-05), XP002237577
SAITO N ET AL: "GRAIN REFINEMENT OF 1050 ALUMINUM ALLOY BY FRICTION STIR PROCESSING", JOURNAL OF MATERIALS SCIENCE LETTERS, CHAPMAN AND HALL LTD. LONDON, GB, vol. 20, no. 20, 15 October 2001 (2001-10-15), pages 1913 - 1915, XP001082980, ISSN: 0261-8028
DVORNAK M J ET AL: "THE WELDABILITY AND GRAIN REFINEMENT OF AL-2.2LI-2.7CU", WELDING JOURNAL, AMERICAN WELDING SOCIETY. MIAMI, US, vol. 68, no. 8, 1 August 1989 (1989-08-01), pages 327 - S, XP000050376, ISSN: 0043-2296
SAITO N ET AL: "GRAIN REFINEMENT OF 1050 ALUMINUM ALLOY BY FRICTION STIR PROCESSING", JOURNAL OF MATERIALS SCIENCE LETTERS, CHAPMAN AND HALL LTD. LONDON, GB, vol. 20, no. 20, 15 October 2001 (2001-10-15), pages 1913 - 1915, XP001082980, ISSN: 0261-8028
DVORNAK M J ET AL: "THE WELDABILITY AND GRAIN REFINEMENT OF AL-2.2LI-2.7CU", WELDING JOURNAL, AMERICAN WELDING SOCIETY. MIAMI, US, vol. 68, no. 8, 1 August 1989 (1989-08-01), pages 327 - S, XP000050376, ISSN: 0043-2296
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