CCS355 Neural Network & Deep Learning UNIT III notes and Question bank .pdf
Shenzhen Association of Vacuum Rev 3.pptx
1. 5/2018 - page 1
Gary Vergason
Vergason Technology, Inc.
Van Etten, NY
USA
2. 5/1/2017 page 2
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30 minutes presentation, 10 minutes questions
Max 30 slides
Agenda
Introduce VTI
Define the market opportunity
Describe why electroplated chrome is bad
PVD metallizing success highlights
Recent availability of PVD chrome
All PVD chrome approaches require paint
Test for PVD chrome must be different from those for electroplated chrome
SuperChrome is the best of the PVD chrome
SuperChrome stack and process overview
SuperChrome appearance
SuperChrome meets all OEM requirements
SuperChrome approval by OEM partially complete
Minimum Investment in SuperChrome
Turnkey system
Size of facility
Cost Model by part size
Options to discuss
If you have your own paint line
If you want to go ahead with inline immediately
How to get started to qualify parts
3. Design, assembly, process development and
commissioning of PVD/PECVD plasma
equipment and turn key solutions
Service and Distribution partners in Europe,
Asia, Central/South America
Toll Coating Services available in USA
First Rapid Cycle Coater built: 1988
37 second cycle time, LEAN manufacturing
> 200 Coating systems deployed worldwide
>30 Years experience in PVD technology
Tribological, shielding, reflective, decorative
coatings, plasma cleaning
USA 4,000 meter2 facility
Vergason Technology, Inc.
A Reliable Supplier
Vergason Technology, Inc.
Van Etten, New York
5. ElectroPlating On Plastic (POP)
Between $2B - $4B annual
Automotive
White goods
Sanitary
Textures: gloss, various matte
Electroplating additives
Reflectivity & color variants
Electroplating additives
Temperature, current
Plating on Plastics Market
SuperChrome market subset
High gloss
High, medium and dark reflection
6. • Cr micro-cracking and
porosity was used to
reduce anodic reaction
with Ni
• Abrasive polishes were
needed to remove
these contaminants
• Severe pitting could
lead to rust from the
substrate
Chrome Plating on Metal
1940-1975
7. Gaskets protected plated
metal and painted metal
interface – possible to polish
without effecting paint
Performed similar to painted
metal surfaces during
impact testing
Superior metal to metal
adhesion
When chrome wears, nickel
shows and can accelerate
anodic action
Chrome Plating on Metal
1940-1975
8. Modern POP is complex
1.Begin ABS or ABS/PC
2.Etching and neutralization
3.Activation
4.Acceleration
5.Electroless nickel plate
6.Immersion copper
7.Bright copper deposition
8.Semi-bright nickel
deposition
9.Bright or satin nickel
deposition
10.Microporous nickel plate
11.Decorative chrome plate
9. Electroplate process limits part
geometry: learned over time
• Bad Shapes for
Electroplate
• Shape improvements
for Electroplate
Adapted from “DuraChrome Hard Chromium Plating”, Eric Svenson, Plating Resources Inc., Cocoa, FL USA, 2006, p.10.
10. Electroplating (Galvanic)
Operations
• Well known manufacturing technique
supplying surface finishes for a wide variety
of markets for many decades
• Permanent installations not well adapted
for LEAN manufacturing (synchronous
processing)
• Large amounts of floor space required
• Complex multiple steps requiring close
monitoring and control
• Requires substrate surfaces that are
capable to become electrically conductive
(plating grade ABS). High scrap rates
• Extensive and expensive waste stream
management and workspace air control
Plating Delamination
11. Cumulative hexavalent chromium exposure was
associated with an increased lung cancer risk
Am. J. Ind. Med., 2000 Aug, vol 38, pg 115-126
Inhaling airborne hexavalent chromium near
electroplating may cause
lung cancer
irritation or damage to the nose, throat, and lung
(respiratory tract)
irritation or damage to the eyes and skin
Health Effects of Hexavalent Chromium, USA OSHA Fact
Sheet
Environmental issues with
plating
12. Past successes of decorative PVD
Aluminum for reflectors for many decades.
High durability paint base coats for structural support of the
PVD film
Resins & molded surface improvement direct PVD coating
since 1988.
Reactive PVD coatings over electroplated chromium in
hardware and plumbing for more than 2 decades
Chrome Challenges
Thornton* sputtered chromium on ABS, w/ & w/o paint base-
coating; no top-coating. All cracked.
Today, PVD solutions for chrome plating replacement are
finally commercially available
Decorative PVD: Brief Evolution
*J.A. Thornton, “Sputter Deposition onto Plastics,” 18th Annual SVC, p. 8, 1975
13. Vergason Technology
Oerlikon Balzers
IHI Hauzer Techno
Coating
Impact Coatings
Kolzer
PVD Technology is
Available Now
SuperChrome 0.3-1.15 m
UV/Thermal Paint 20-40 m
Plastic Substrate
Chromium 0.2-0.3 m
Nickel and Copper 20-50 m
Plastic Substrate: PC/ABS
15. PVD Metallizing
Traditional Triple Stack:
Base Coat/PVD/Top Coat
SUPERCHROME PVD Coating
Double Stack:
Base Coat/PVD
No Top Coat necessary
SUPERCHROME PVD Coating vs. Triple Stack Coating
Top Coat alters visual appearance Natural Chrome Color
16. Comparisons: Chrome Plating versus
Triple Stack
Chrome Plating PVD Metallizing
Traditional Triple Stack: Base Coat + PVD + Top Coat
17. PVD Metallizing
Traditional Triple Stack: Base Coat + PVD + Top Coat
Top Coat Darkens Color, Loses Depth True Deep Chrome Color, GM 150
Comparisons: Triple Stack versus PVD Chrome
PVD Chrome
18. Lower costs – 10 to 20% savings
Capital expeditures
Processing and effluent costs
Variety of substrate materials
Less weight – 12% savings
Easier to recycle
Less metal (mostly on one side, 150 to 250X thinner)
One metal
No galvanic interaction between layers
Pass Russian mud test!
Flexible: no cracking on tabs
PVD Advantages over Plating
19. Different materials system
Metal layers are thinner
Not the same as paint, not same as electroplate
A new specification will likely be required from
each OEM
Some, e.g. GM, already released.
In general, begin with paint specifications and
modify
Testing: differences between
PVD and electroplating
20. No top paint required
Looks like electroplated chrome
Possible to repair expensive substrates
Lowest cost of entry
SuperChrome best of PVD chrome
options
21. For now, only gloss available
Matte in development, to be accomplished with paint
Color can be measured many ways
Here, integrating sphere, D65 illuminant, 10 observer.
Typical values, compared to some plated standards.
SuperChrome appearance
Type L* a* b* Rvis (%) Gloss
SuperChrome Bright 78.7 0.0 0.3 54.4 97.5
SuperChrome Medium 72.5 0.5 1.6 44.4 97.6
SuperChrome Dark 60.0 1.2 3.7 28.1 97.7
PSA Peugeot HDX/M001
(Gris Trionx with grain Crome Brilliant)
79.0 0.5 0.6 54.9 96.5
Ford Twilite SM5166 63.6 0.9 3.4 32.3 95.1
22. SuperChrome passes all OEM Testing:
Visual, Adhesion, Weathering
Visual Appearance Interior VW TL226 PASS
Initial Adhesion Interior VW TL226 & Exterior VW
TL211/528
PASS
Visual Appearance after 2d 60°C Interior VW TL226 PASS
Adhesion after 2d 60°C Interior VW TL226 PASS
Visual Appearance after 24 h 90°C Interior TL226 PASS
Visual Appearance after Constant Climate 240h 40°C,
>96% relative humidity Interior VW TL211
PASS
Adhesion after Constant Climate 240h 40°C, >96%
relative humidity VW TL211
PASS
Artificial Aging UVB Procedure A PSA B72
0200/2013-04
PASS
Water Absorption BAC FORD PSA B72 0200/2013-04 PASS
PV1200 Climate Change Test VW TL211 PASS
Neutral Salt Spray VW TL528 PASS
Salt Spray ASTM B117-11, 1000 hours PASS
CASS, 100 hours PASS
PV3930 Florida Sunshine VW TL211, 2400 hours PASS
Russian (CaCl2)Mud per ASTM B995, 336 hours PASS
Hydrolysis 95C, 95% RH, 72 hour PASS
Should we rather use
the tables from Surfin
June 2018?
23. Test Results - Mechanical
Resistance to Gritting Renault 47-03-003/L-2013PASS
Stone Chipping, VW TL211 PASS
Stone Chipping, PSA B72 0200/2013-04 PASS
Gravelometer/70 CASS PASS
Resistance to Scratching by Abrasion Renault
47-03-003/L-2013
PASS
Crockmeter BMW Exterior PASS
Car Wash Brush Resistance VW TL211 PASS
Abrex PASS
Martindale PASS
24. Cream A Interior VW TL226 PASS
Cream B Interior VW TL226 PASS
High Pressure Cleaning VW TL 211 PASS
Hydrolysis Interior BMW PASS
FAM test fuel VW TL211 PASS
Gasoline E10 VW TL211 PASS
Diesel B7 VW TL211 PASS
Isopropanol VW TL211 PASS
Ethanol/Water Exterior BMW PASS
Sodium Hydroxide 5% VW TL211 PASS
Sulfuric Acid 10% VW TL211 PASS
Hydrochloric Acid 10% VW TL211 PASS
Hydorchloric Acid 30% Suspended in Vapors PASS 24 Hours
Bird Droppings VW TL211 PASS
Liquid Tree Pitch VW TL211 PASS
Vomit Exterior BMW PASS
Deionized Water Exterior BMW PASS
Wheel Cleaner Exterior BMW PASS
Underbody Sealant BMW PASS
Test Results - Chemical
26. • Coating zone 2.725 square
meters
• 1, 2 and 3 axis rotation,
optimizes coating zone
• Load/Unload fixtures off line
• Double door design
minimizes open vacuum
chamber time
• 4 cycles per hour, 22,880
cycles per year or 62,348
coated square meters per year
• Yes, 15 minutes/cycle
• Capital Expense for painting
and PVD equipment
(US$3M, ¥21M) amortized 5
years = $16.82/m2, ¥117/m2
Substrate Coating Zone
28. 5/1/2017 page 29
Key Cost Model Assumptions
•Very detailed model
•Incorporates
• Part size
• Quantity per PVD load
• Necessary utilization by
part and process
•Key Assumptions
• Hourly labor rate
• Amortization period
• PVD Consumable and
maintenance costs
• Electricity, cooling
water, gases, target,
HMDSO
• Paint consumable and
maintenance
• Transfer efficiency,
electricity, CO2
• PVD equipment cost
• Paint equipment cost
29. Paint
Class A parts require Class A painting
Only 1 lacquer
Custom developed
All others and substitutions fail
Available exclusively from VTI
Turn key solution
VTI can source a qualified paint line in Asia
Already have paint line? VTI can integrate
PVD
VTI supplies equipment and process
Process control is critical
More demanding than metallizing
Turnkey Solution
Paint Line Is Required
30. Superior product properties
Specification-compliant properties:
mechanical and chemical resistance
Excellent surface for support and
adhesion of PVD coatings
Short process times
CYCON® UV coatings are fully cured
within seconds
Complete elimination of oven drying
Low capital expenditure requirements:
Requires little production floorspace
Short processing saves energy and
investment costs
Low VOC
UV Base Coat for SUPERCHROME
PVD Coating
31. SC 660 PVD Coating
System
Single-point
loading and safety
enclosure
Robotic
load/unload
available
SUPERCHROME PVD Coating System
Integrated production - Batch
Molding Cleaning
CYCON
UV-
Coating
Paint Line
SUPERCHROME
PVD
Batch System
34. Standard plaques and design
lenses supplied from VTI, New
York R&D center
135 mm x 95 mm x 2.5 mm, lots
of 20
Prototype production from SPPP,
France
Fee based
Part Qualification Process
35. Robust PVD solutions are available
from several suppliers to start
replacement of decorative galvanic
platings on plastics and metals
10 to 20% cost reductions can be
realized
End users must understand
cleaning requirements
Specifications need to be rewritten
Clean PVD coatings like paint!
Conclusions
Editor's Notes
Good Morning.
The general market is plating on plastic. This a 2 to 4 billion dollar market. Perhaps 80% of the market is automotive interior and exterior trim. The rest is mainly white goods, like kitchen and laundry appliances, and sanitary fixtures, like shower fixtures. High gloss, high reflectivity surfaces like the one pictured are not the only ones produced by electroplating processes. There is a significant industry in plating-bath-additives that produce various levels of satin or matte textures, as well as reducing the overall reflectivity level, (hand gesture downward) all the way to what some refer to as black chrome. At the moment, SuperChrome is only high gloss. We are developing matte finishes, but those are not yet ready for release. Those textures will be achieved with changes to the paint formulation, so the same PVD equipment as gloss will be used for matte. SuperChrome does have a range of brightness, achieved by different PVD process recipes.
SuperChrome replaces electroplating, but before I go into detail with our approach, you should have an appreciation for the complexities of POP processing. Keep in mind that each step here required a different consumable chemistry.
Plating requires the substrate be ABS or ABS/PC. SuperChrome can do those, but also many others.
Butadiene must be etched away in chromic acid.
That etched surface is activated in a platinum bath.
Electroless nickel bonds to the platinum, providing an anchor for copper.
Finally, 10 to 20 microns of copper are electroplated, followed by 20 to 30 microns of nickel layers selected for specific electrochemical potentials that influence corrosion.
A carefully controlled density of cracks or pits are needed in the top cathodic layers to influence corrosion.
And did I mention the hexavalent chromium in the etching and chrome plating steps is carcinogenic? (wave finger) You should be grateful if you don’t have to deal with all this!
Not only is electroplating processing hazardous, but electroplating also has difficulties with certain shapes. Over time, as designers, molders and electroplaters have worked together, they have found way to get electroplating to work better. Moving to SuperChrome, there is more design freedom. (Be careful with this. Paint’s picture framing has some similar problems.)
In past decades, reflector coatings with PVD aluminum became standard. Between then and now, resin compositions and the availability of quality molded surfaces have enabled direct PVD coating without paint base coats, but paint is still required for thin films applications when mechanical durability is required.
Why is a PVD chrome so special?
John Thornton’s straight-forward approach in 1975 revealed the need to pay special attention to stress and cracking of chrome on ABS. He worked with both painted and unpainted substrates.
In the hardware and plumbing markets, cathodic arc PVD coatings over electroplated chromium have been common for more than 2 decades. Today, PVD solutions to replace chrome plating are available.
Bild mit Layers ?
I apologize in advance for this eye chart. The exact content is not the point. For POP, OEMs have well defined expectations for appearance and adhesion. They also have well defined expectations for durability when exposed to chemicals, abrasives, scratching as well as temperature, humidity and UV extremes. A complete listing of all tests is outside the scope of this paper. For a decorative coating, those fall into 3 main classes. Here, I just want to show that SuperChrome has passed all of the expectations for adhesion and appearance both before and after the specified accelerated exposure conditions. In some fortunate cases, there will be a standard test that all OEMs accept. For example, the CASS test appears to have some standard acceptance. However, for many others, each OEM has it’s own test.
That difference in tests is perhaps clearer here, in the second group of tests: mechanical durability. Volkswagen’s stone chipping test is different from PSA’s. Not all OEMs have the same car wash brush resistance test. In our specific case, VTI has engineered SuperChrome to pass all of the mechanical tests.
The third class of tests reveals chemical resistance. This list is perhaps the most dense because these tests reveal a perceived need by some OEMs to specifically evaluate how every conceivable substance effects the coating. This apparently empirical approach reveals the complex behavior of electrochemical processes on coatings. We’ll look at this behavior in a bit more detail 7 slides from now. Suffice to observe that SuperChrome has meet all these specifications to date.
Part images are approximately to same scale.
How close can we come to a comparative table with electroplate, ePD, Chromatipic?