Advanced Materials Manufacturing - LBCG · Materials Conference (mm) Thickness (nm) •Width of...
Transcript of Advanced Materials Manufacturing - LBCG · Materials Conference (mm) Thickness (nm) •Width of...
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Advanced Materials ManufacturingSurface Conditioning Technology for Automotive Lightweight Materials
Andy F. StecherPresident/CEOPlasmatreat North America, Inc.
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Global Lightweight VehicleMaterials Conference
• Regulation• Technologies• Business Economics• Market Forces
Automotive Lightweighting
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Global Lightweight VehicleMaterials Conference
How to achieve these targets?
- MATERIALS- PROCESS- DESIGN
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Global Lightweight VehicleMaterials Conference
How to achieve these targets?
- MATERIALS- PROCESS- DESIGN
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Global Lightweight VehicleMaterials Conference
Steel is easy to clean, easy to bond to, and easy to paint.
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Global Lightweight VehicleMaterials Conference
Steel is easy to clean, easy to bond to, and easy to paint.
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Global Lightweight VehicleMaterials Conference
Steel is easy to clean, easy to bond to, and easy to paint.
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Global Lightweight VehicleMaterials Conference
Materials of construction• New/dissimilar materials• Lifecycle assessment• Crash testing• Quality• Vehicle safety• Aftermarket, Repairs
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Global Lightweight VehicleMaterials Conference
Automotive materials of construction• Plastics/Elastomers
• Thermosets/Thermoplastics• PA6, PA66, PA11, PA12• PEEK• PPS, PPA• ….
• EPDM
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Global Lightweight VehicleMaterials Conference
Automotive materials of construction• Composites
• CFRP• SMC• GFRP• Graphene• New material compositions
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Global Lightweight VehicleMaterials Conference
Automotive materials of construction• Metals
• Aluminum• Magnesium• Iron• Steel
• Cold Roll• High Strength
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Global Lightweight VehicleMaterials Conference
Automotive materials of construction• Glass• Ceramics
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Global Lightweight VehicleMaterials Conference
Assembly methodology• Fewer weld spots • Adhesive bonding• Other joining technologies• Competitiveness• Automation• Safe production environment
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Global Lightweight VehicleMaterials Conference
Increased Use Automation and
New Technologies
• Process Control• Quality• Safety• Competitiveness
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Global Lightweight VehicleMaterials Conference
Productivity andWork Safety
Concerns
• OSHA• Competitiveness• Skills• HR Liabilities
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Global Lightweight VehicleMaterials Conference
Manufacturing processes =Assembly and Joining of Parts
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Global Lightweight VehicleMaterials Conference
Manufacturing processes =Interfacing Material Surfaces
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Global Lightweight VehicleMaterials Conference
Important for adhesion of coatings and adhesives.
Low surface energy
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Global Lightweight VehicleMaterials Conference
Automotive parts affected by oils, mold release agents, and other impurities
Contamination
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Global Lightweight VehicleMaterials Conference
Contamination
Oil
Dust
Grease
Finger-prints
External SurfaceContamination
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Global Lightweight VehicleMaterials Conference
Contamination
Anti-oxidants
Cross-linkers
Fillers
UV Modifiers
Pigments
Slip Agents, Waxes
Internal SurfaceContamination
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Global Lightweight VehicleMaterials Conference
The need for surface preparation
STATIC REMOVAL: Static attracts dust and similar contaminants which interfere with surface processesCLEANING: All surfaces, no matter how clean they seem, have surface contaminants that interfere with bonding and coating applicationsACTIVATION: Advanced engineering polymers tend to be chemically inert – with few or no functional groups on which to bondPASSIVATION: Metals are prone to oxidation and require treatment to stabilize the oxidation processCOATING: Change surface characteristics in a way that improves subsequent coating operations
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Global Lightweight VehicleMaterials Conference
Traditional surface treatment methods:
•Mechanical: Sanding, Grit Blasting•Fluid: Powerwash, Solvent Wipe•Chemical: Caustic/Acid, Primers
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Global Lightweight VehicleMaterials Conference
Advantages of non-touch/dry surface treatment:
•Mechanical: Sanding, Grit Blasting•Fluid: Powerwash, Solvent Wipe•Chemical: Caustic/Acid, Primers•Physical: Corona, Flame, Plasma
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Global Lightweight VehicleMaterials Conference
Purpose of Plasma
Low pressure plasma Atmospheric pressure plasma
batch, full 3D treatment in-line, localized treatment
adhesion promotionachieving reliable bonding
release coatingsimplified CFRP production
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Global Lightweight VehicleMaterials Conference
Variable parameters Speed Jet-substrate-distance Plasma-cycle-time (PCT) Frequency Voltage (amplitude of pulse) Process-gas (type & amount) Jet-head
Plasma Process Parameters
Additional influences Material, properties & geometry
of the substrate Material & properties of
subsequently applied compounds
Automation
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Global Lightweight VehicleMaterials Conference
Process Control
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Global Lightweight VehicleMaterials Conference
Cleaning Aluminum Engine Blocks Plasma-Clean Chaincase Mating Surface
Benefits :
•Added value to product•Quality confirmation•Target is zero oil leaks•Manpower reduction•Reduce warranty claims
Openair® Plasma Applications
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Global Lightweight VehicleMaterials Conference
FIPG Adhesion Strength increased
Replaced manual wipe down:• cleaner• more accurate• save labor• better adhesion
Openair® Plasma Applications
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Global Lightweight VehicleMaterials Conference
A comparison plot of plasma cleaned, oven annealed, and acetone wiped aluminum
Cleaning Comparison
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Global Lightweight VehicleMaterials Conference
Water Contact Angle
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Global Lightweight VehicleMaterials Conference
Plasma Coating
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Global Lightweight VehicleMaterials Conference
Coating thickness approx. 100 nm
Plasma Coating Thickness
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Global Lightweight VehicleMaterials Conference
Plasma coating
improves durability of adhesive bonds longer „open time“ no solvents or other harmful chemicals automated application faster process
Benefits
Applications
adhesive tapealuminum light weight constructioncar windshield bonding
aluminum
plasma polymer
adhesive
aluminum
= adhesion promoter
Primer Replacement
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Global Lightweight VehicleMaterials Conference
Windhield Bonding
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Global Lightweight VehicleMaterials Conference
(mm)
Thick
ness
(nm
)Position to middle of track (mm)• Width of treatment up to 30 mm
• Homogenious coating with 4 mm track pitch
Interference colors on a silicon wafer (picture)
Thickness measured byellipsometry
Coating by Openair®-Plasma
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Global Lightweight VehicleMaterials Conference
Variable parameters with & without polymerization
Speed Jet-substrate-distance Plasma-cycle-time (PCT) Frequency Voltage (amplitude of pulse) Process-gas (type & amount) Jet-head
Additional influences Material, properties & geometry of
the substrate Material & properties of
subsequently applied compounds
Additional parameters for polymerization Precursor (type & amount) Carrier gas (type & amount) Jet-heads for polymerization Temperature of substrate
Plasma Process Parameters
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Global Lightweight VehicleMaterials Conference
Bonding - Two Urethane Sealants
Peel test results from various pretreatments on aluminum. The adhesive is a urethane. Plasma treatment leads to cohesive failures. Plasma coated aluminum provides the bond line with greater protection through a 96 hour salt spray test
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Global Lightweight VehicleMaterials Conference
not coated(corrosion)
coated(no corrosion)
Light microscopic magnification of a coated and an uncoated area
Aluminum sheet after 96 h salt spray test (DIN 50021; the corroded area was not protected by the coating by means of using a mask, which was removed after coating and before salt spray test)
Corrosion Protection
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Global Lightweight VehicleMaterials Conference
Corrosion Protection
Zinc Zinc Plate
Galvanized Steel
Stainless Steel
AlAl Alloy Al/Mg
Post 96 Hour Salt Spray
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Global Lightweight VehicleMaterials Conference
Checking of impermeability after salt spray test (Swaat-test)
Green: no leakagesRed: leakages (corrosion on the flange with
penetration to inner body)
Highly efficient anti-corrosion coating
Case Study: Automotive Power Steering Pump
50 h 250 h 500 h 750 hWithout corrosion protection pass fail fail fail
With sprayed protective oil pass pass pass fail
With Plasmatreat coating pass pass pass pass
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Global Lightweight VehicleMaterials Conference
Completely automated in a two-robot-cell
Extensive process control of the PlasmaPlus®-coating permits a high degree of process repeatability
15 cells in production of 1 million parts per year
Coating by Openair®-Plasma
Automation
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Global Lightweight VehicleMaterials Conference
• Headlamps • Door modules• Dashboard• Door seals• Cameras• Trunk/bumper painting• Aircraft wing bonding• Electronic panels• Back-up/Rearview Cameras• Engine Sealing/Oil pan bonding
Automotive Plasma Applications
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Global Lightweight VehicleMaterials Conference
48
Employee SafetyReduce Exposure to Toxic Substances
Material CostsSubstrate, Chemicals, Adhesives
Operational CostsLess Labor, More Efficiency
QualityHigher Customer Satisfaction,
Lower Costs from Claims
Environmental StewardshipLess VOC’s & Toxic Wastes
$
$
$
$
Strong Business Considerations
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Global Lightweight VehicleMaterials Conference
THANK YOU FOR YOUR ATTENTION!
Plasmatreat North AmericaElgin, IL Belmont, CA Ancaster, ON
Tel. (855) 4TH-STATEwww.plasmatreat.com