www.precoinc.com

www.precoinc.com
4/12/2011
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Global Presence
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Lasers in Fuel Cell Manufacturing
Preco Inc., Core focus
-Laser Process Research & Development
Laser Contract Manufacturing
-Laser
-Laser System Equipment Design and
Build
-Flat Bed and Rotary Die Press Equipment
-High Tolerance Screen Printing
Equipment
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Contract Manufacturing Services
Product Overview – Contract Manufacturing Services (“CMS”)
Preco is one of the largest laser
laser-based
based contract manufacturers in North
America with more than 42 internally-developed proprietary systems.
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Provides laser-based CMS including feasibility testing, process testing, pilot
production and complete shortproduction,
short and long
long-term
term outsourced production
production.
CMS enables the Company to optimize systems prior to sale and installation at the
customer’s site.
Currently provides CMS to approximately 280 customers, including 3M, Abbott
Laboratories, Caterpillar, Delta Faucet, General Mills, and many others.
Diversity of markets: Automotive, Flexible Packaging, Medical, Flex
Circuits, Abrasives, Cell Phones, Heavy Metals.
Laser Welding
Exhaust Components
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Laser Cutting of Acrylic Lenses
for Automotive Graphic
O l
Overlays
Flexible Packaging
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Fuel Cells and Lasers
Preco, Inc – Producing Fuel Cell
Components with Lasers
g Speed
p
Welding
g of Metal Bipolar
p
High
Plates
High Speed Cutting of Metal Bipolar Plates
Hermetic welding of pressure vessels and
valves
High speed micro hole drilling in metals
and
d polymers
l
Converting carbon fiber/polymer materials,
i.e. MEA, GDL, Gaskets, Packaging
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Preco, Inc.
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Preco, Inc.
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Preco, Inc.
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Thin metal high speed welding
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Laser Polymer Processing
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High Powered Lasers In Contract Production at Preco, Inc
1
12kW C02
1 8kW C02
5
6kW C02
1 5kW C02
1
3.0kW Nd:YAG
1
3.5kW C02
1
2.7kW C02
6
1.0kW to 2kW CO2
1
200 W single mode fiber
2
1 kW multi mode fiber
1
6 kW multi mode fiber
1
10 kW multi mode fiber
Greater than 15 200W to 750 W lasers
Over 35 total laser processing stations
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Laser Wave length
Absorptio
n
TiO2
Color
Pigments
Ultraviolet
Ult
i l t
400
nm
Excimer
ArF: 193 nm
532 nm
KrF: 248 nm
XeCl: 308
nm
355 nm
Laser
Pigments
Infrared
800
nm
Nd:YAG
1064 nm
Diode
lasers
800 - 1100
nm
Volume absorber
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CO2
9.4 µm
10.6 µm
Surface absorber
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Absorption
Reflection(
%)
Ag = 0.97
Al = 0.94
Au = 0.99
Be = 0.61
Cr = 0.63
Cu = 0.96
Fe = 0.64
Mo = 0.67
Ni = 0.72
Pt = 0.75
W = 0.59
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Laser Tube Welding
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Laser Tube Welding and Cutting
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Laser Lap Welding Of Stainless Sheet Metal Evaporator Panels
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High Volume Laser Welding Including Integrated 100% Vision Inspection
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Laser Spot Welding
About 2 seconds
For 36 welds
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Laser Micro Welding
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Laser Welding Advantages
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Laser Can be Shared Between Stations
Narrow Fusion Zone
Mi i l Heat
Minimal
H t Affected
Aff t d Zone
Z
Minimal
a Shrinkage
S
age a
and
d Distortion
sto t o
Accurate Weld Placement
Non-Contact Process
Fast Travel Speeds
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Laser Welding Limitations
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Carbon content generally should be less that .3
 If higher
g
considerations must be made for
hardness
Components must be clean and oil free
Close fit-up tolerance is required
Vaporization
p
of some elements can occur during
g
welding process
Inert cover gas required to reduce oxide propagated
corrosion zone
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Butt Joint
T
Gap < 10% of T for
goodd welds
ld
Gap
More weld
ld
stress - prone to
cracking
ki
Incomplete
l
Penetration
Stress Riser (Restraint)
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Lap Joint
W > T for
f full
f ll
strength
T
W
Root porosity
can be more
d ti
detrimental
t l
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Lap Joint
Stress risers
St
i
at interface
Gap < 10%
T for good
welds
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T
Gap
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Requirements on Process Monitoring
•Quality assurance in mass production
•Cost
Cost efficiency
• zero failure tolerance
• Traceability of bad welds
• 100%- Documentation
• Immediate discharge of bad parts
→ no further
f th processing
i off b
bad
d parts,
t no consumer recalls
ll
• Continuous optimization of the process
→ Reduction of the reject rate
• Trend analysis and visualization of warning signals
→ avoid production downtimes
• Quality assurance within the process cycle
→ Reduction of visual and destructive testing
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Fiber laser weld on SS
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Laser welded automotive gear
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Laser welded 410 SS diaphragm
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Mild Steel Welding 11.2mm
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Comparison of Welding by FL and CO2 Lasers
Mild steel
t l t=
t 12 mm
IPG YLR -10000
PL = 10.2 kW
vw = 2.2
2 2 m/min
TLF 15000 turbo
+ 32 %
-18 %
PL = 13.5 kW
vw = 1,8
1 8 m/min
+ 61 %
E = 2,8 kJ/cm
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E = 4,5 kJ/cm
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Welding of Mild Steel 16 mm
S355, t = 16 mm
PL = 10.5
10 5 kW
vW = 1.2 m/min
Laser + MAG
S355, t = 16 mm
PL = 10.5 kW
vw = 1,2 m/min
U = 23+7 V
I = 203 A
vwfs = 6.0 m/min
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Mild Steel Welding
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10kW CW Ytterbium Fiber Laser
Pipeline Steel X70, 12 mm
Laser Power:
Fiber Core:
Fiber Length:
BPP:
Welding Speed:
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10.2
2 kW
200 µm
80 m
11.5
11 5 mm x mrad
2.2 m/min
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Welding of Aluminium
Laser MIG hybrid welding
EN-AW 6008, t = 4 mm
SZW AlSi5
PL = 10.5 kW
vS = 8 m/min
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Laser MIG hybrid welding EN-AW 6008,
tt=88 mm
SZW AlSi5
PL = 10.5 kW
vS = 8 m/min
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Preco Inc.
Preco Headquarters
9705 Commerce Parkway
Lenexa, Kansas 66219
Toll Free: 800.966.4686
Phone: 913.541.0066
Fax: 913.541.9088
Preco Somerset
500 Laser Drive
Somerset,, Wisconsin 54025
Toll Free: 800.775.2737
Phone: 715.247.3285
Fax: 715.247.5650
Preco Ohio
Troy, Ohio USA
Preco United Kingdom
Canterbury, Kent, UK
Preco LMI AB
Nas Sweden
Nas,
www.precoinc.com
Preco Miwa
Tianjin, China
Preco High Technology
Tianjin, China
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