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FRICTION STIR WELDING
Torben Lorentzen
CEO of DanStir ApSDanish Stir Welding Technology
&Friction Stir Welding Specialist
Bayards Aluminium Construction B.V.
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Out-line
Friction Stir Welding
Legal Aspects
Friction Stir Welding at BAYARDS
- The proces in brief
- Weld properties
- Licensees- Patents
- Standards
- Equipment functionality and capabilities
- Applications
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Friction Stir Welding- The proces in brief
- Weld properties
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The sequences of a Friction Stir Welding event
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Micro-structural effect of a Friction Stir Welding event
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0
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1 00
1 10
1 20
1 30
0 1 2 3 4 5 6 7 8 9 1 0 1 1 12 1 3 14 1 5 1 6 1 7 18 1 9 2 0 2 1 2 2 23 24 2 5
S tre s s (M Pa )
S train (% )
F
B
M
P
Tensile test behaviour; EN-AW-6082-O
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-5 0 5 10 15 20 25 30 35
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Hardness[HV10]
Position [mm]
No. 22
Hardness profile; EN-AW-6082-T6
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Heat treatable alloysrecovering hardness overtime here EN-AW-7075
Post weld heat treatment (PWHT)recovering essentially to parent metal
hardness here EN-AW-6082-T6
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Material 0.2% Proof strength[MPa]
Tensile strength[MPa]
Elongation[%]
Welding factor[UTS-FSW / UTS-Parent]
5083-O Parent 148 298 23,5
5083-O FSW 141 298 23 1,00
5083-H321 Parent 249 336 16,55083-H321 FSW 153 305 22,5 0,91
6082-T6 Parent 286 301 10,4
6082-T6 FSW 160 254 4,9 0,83
6082-T6 FSW & aged 274 300 6,4 1,00
6082-T4 Parent 149 260 22,9
6082-T4 FSW 138 244 18,8 0,93
6082-T4 FSW & aged 285 310 9,9 1,19
7108-T79 Parent 295 370 14,0
7108-T79 FSW 210 320 12,0 0,86
7108-T79 FSW & aged 245 350 11,0 0,95
Weld properties for a range of common alloys
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Refined micro-structure and good surface finish
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High weld ductility renders good bending performance
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Legal Aspects- Licensees
- Patents
- Standards
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Licensee status :
Development in licensees over the past 14 years
Smith, I. J., 2008, FSW Patents
A Stirring Story, TWI
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Licensees in an around The Netherlands
Country Non-commercial Commercial
Germany 5 9
France 3 2
Belgium 2 1
The Netherlands 0 1
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Patent status :
The two original patents held by TWI covers the intellectual
property rights regarding the general use of the technology:
US-5,460,317 / EPO615480B1 (1992-2012)
US-5,813,592 / EPO752926B1 (1995-2015)
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Patent status :
Development in 3rd party patent filings
Smith, I. J., 2008, FSW Patents
A Stirring Story, TWI
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Standards status :
Friction Stir Welding is approved by most
of the classification bodies including:
American Bureau of Shipping (ABS)
Bureau Veritas (BV)
Det Norske Veritas (DNV)
Germanischer Lloyds (GL)
Lloyds Register of Shipping (LRS)
Registro Italiano Navale (RINA)
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Standards status :
An official international standard is under
development by the B1 Working Group ofthe IIW Commission III :
ISO/AWI-25239 Part 1-5:
ISO/AWI 25239-1: Part 1: Vocabulary
ISO/AWI 25239-2: Part 2: Design of welded joints
ISO/AWI 25239-3: Part 3: Qualification of welding operators
ISO/AWI 25239-4: Part 4: Specification and qualification of welding procedures
ISO/AWI 25239-5: Part 5: Quality and inspection requirements
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Friction Stir Welding at BAYARDS- Equipment functionality and capabilities
- Applications
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Equipment :
The Friction Stir Welding installation at BAYARDS Aluminium Constructions B.V.
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Equipment :
- Envelope 3.5 x 15.5 meter
- 100 kN down force
- Position- or load-control
- 2D-programable weld paths- Maximum daylight 1.6 meters
- Prepared for a 2nd weld head
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Applications :
- Tailor Welded Blanks (TWB)
- Aircraft cargo floor panels
- Leight weight fuel tanks for UAV- X-ray scanner parts
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Tailor Welded Blanks (TWB) :
Tailor Welded Blanks welded for Renault inner door panels
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Aircraft cargo floor panels :
Cargo floor panels for Lockheed Martin C-130 Hercules aircraft
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Leight weight fuel tanks for UAV :
Light weight fuel tanks for un-maned air crafts
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X-ray scanner parts :
C-arc beams for Philips medical X-ray scanning equipment
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Torben Lorentzen