FRICTION STIR WELDING. Torben Lorentzen. CEO of DanStir ApS. Danish Stir
Welding Technology. &. Friction Stir Welding Specialist. Bayards Aluminium ...
FRICTION STIR WELDING Torben Lorentzen CEO of DanStir ApS Danish Stir Welding Technology & Friction Stir Welding Specialist Bayards Aluminium Construction B.V.
Out-line Friction Stir Welding - The proces in brief - Weld properties
Legal Aspects - Licensees - Patents - Standards
Friction Stir Welding at BAYARDS - Equipment functionality and capabilities - Applications
Friction Stir Welding - The proces in brief - Weld properties
The sequences of a Friction Stir Welding event
Micro-structural effect of a Friction Stir Welding event
S tr e s s ( M Pa ) 130
P
120 110 100 90 80 70 60
F
50 40
M
30 20 10
B
0 0
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 S t r a in ( % )
Tensile test behaviour; EN-AW-6082-O
120 110 100
Hardness [HV10]
90 80 70 60 50 40 30
No. 22
20 10 0 -5
0
5
10
15
20
25
30
Position [mm]
Hardness profile; EN-AW-6082-T6
35
Heat treatable alloys recovering hardness over time – here EN-AW-7075
Post weld heat treatment (PWHT) recovering essentially to parent metal hardness – here EN-AW-6082-T6
Material
0.2% Proof strength [MPa]
Tensile strength [MPa]
Elongation [%]
Welding factor [UTS-FSW / UTS-Parent]
5083-O Parent 5083-O FSW
148 141
298 298
23,5 23
1,00
5083-H321 Parent 5083-H321 FSW
249 153
336 305
16,5 22,5
0,91
6082-T6 Parent 6082-T6 FSW 6082-T6 FSW & aged
286 160 274
301 254 300
10,4 4,9 6,4
0,83 1,00
6082-T4 Parent 6082-T4 FSW 6082-T4 FSW & aged
149 138 285
260 244 310
22,9 18,8 9,9
0,93 1,19
7108-T79 Parent 7108-T79 FSW 7108-T79 FSW & aged
295 210 245
370 320 350
14,0 12,0 11,0
0,86 0,95
Weld properties for a range of common alloys
Refined micro-structure and good surface finish
High weld ductility renders good bending performance
Legal Aspects - Licensees - Patents - Standards
Licensee status :
Smith, I. J., 2008, ”FSW Patents – A Stirring Story”, TWI
Development in licensees over the past 14 years
Country
Non-commercial
Commercial
Germany
5
9
France
3
2
Belgium
2
1
The Netherlands
0
1
Licensees in an around The Netherlands
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)
Patent status :
Smith, I. J., 2008, ”FSW Patents – A Stirring Story”, TWI
Development in 3rd party patent filings
Patent status :
Top-10 organisations holding the most Friction Stir Welding patents
Smith, I. J., 2008, ”FSW Patents, A Stirring Story”, TWI
Company Hitachi Boeing KHI Showa NLM SLM Mazda Lockheed Martin ESAB MHI
Total (US/EP/JP) 215 69 44 44 35 23 13 9 9 9
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) • Lloyd´s Register of Shipping (LRS) • Registro Italiano Navale (RINA)
Standards status : An official international standard is under development by the ”B1 Working Group” of the ”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
Friction Stir Welding at BAYARDS - Equipment functionality and capabilities - Applications
Equipment :
The Friction Stir Welding installation at BAYARDS Aluminium Constructions B.V.
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
Applications :
- Tailor Welded Blanks (TWB) - Aircraft cargo floor panels - Leight weight fuel tanks for UAV´ - X-ray scanner parts
Tailor Welded Blanks (TWB) :
Tailor Welded Blanks welded for Renault´ inner door panels
Aircraft cargo floor panels :
Cargo floor panels for Lockheed Martin´ C-130 Hercules aircraft
Leight weight fuel tanks for UAV´ :
Light weight fuel tanks for un-maned air crafts
X-ray scanner parts :
C-arc beams for Philips medical X-ray scanning equipment
Torben Lorentzen
