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DÜRR
Wheel Painting
Conference 2019
Martin Huthoefer (Area Sales Manager)
23.10.2019
24.10.2019 2
Gema Switzerland GmbH
40 years of experience in electrostatic powder coating with leading
edge technology and wide product range.
。
324.10.2019
• Founded in 1897 as sheet metal work
• A world leader in powder coating technology since '60s
• Since April 2012 Gema part of Graco
(Industrial Equipment Segment)
• 7 affiliate companies in CN, DE, FR, IT, JP, UK, USA, (IN)
• Approx. 400 employees worldwide
• Agencies and sales offices in more than 60 countries
• Worldwide service on spot available
Gema Switzerland GmbH
424.10.2019
Gema
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Gema
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Distribution(Switzerland)
CUSTOMERS
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Engineering
Customers's Lab
Procurement
Manufacturing
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Controlling
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CUSTOMERS
Gema – Global Organization
5© 2018 by Gema Switzerland GmbH - All rights reserved.
Strong Worldwide Presence
● Protection against scratches
● Impact resistance
● UV protection
● Resistance against solvents, oils and fuels
● Optimum of corrosion protection
● Longer attractive surface
● Better for the environment
● Recovery of overspray => More efficiency24.10.2019 6
Why Powder Coating on alloy wheels?
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The Wheel Parts – Increasingly difficult
● Various Wheel Coating Solutions
● One result a perfect surface
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Wheel Coating by GEMA
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Wheel Coating, Manual – Job Coating
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Wheel Coating Vertical
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GEMA Wheel Coating – Higher Capacity
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Gun layout
Guns for top coating
Guns for tire seat
Guns for bottom coatingSynchronized
Typical wheel system layout by GEMA - Evolution
Plastic Booth up to 8 Meters
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Gun layout / Reciprocators
Guns for top coating
Fixed Guns for tire seat
Synchronized Guns for bottom coating
Typical wheel system layout by GEMA - Evolution
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AZO Sieve with single hopper for single color application
Typical wheel system layout by GEMA - Evolution
The next Level
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GEMA - Wheel Coating - Evolution
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Wheel Coating Floor Conveyor
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● Cyclone
● Double Powder Center
● Top Guns only fresh Powder
● Short booth design 4 m
● Big Bag fresh powder supply
GEMA - Wheel Coating - Evolution
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● Gun arrangement on synchro axis
● For top, side and bottom
● Height adjustable from bottom
GEMA - Wheel Coating - Evolution
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GEMA - Wheel Coating - Evolution
Coating of 2 wheels at the same time
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GEMA - Evolution– Optimized Air Flow
Area of lowest Airspeed for ideal coating condition
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GEMA - Evolution– Optimized Cleaning
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GEMA - Wheel Coating - Evolution
● All guns adjustable
● All guns Synchronized
● Higher Automatization Level
● More Data Collection
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GEMA - Wheel Coating - Evolution
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GEMA - Wheel Coating - Evolution
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Application Key Components by GEMA
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GEMA AP01 OptiSpray Application Pump
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OptiFlow IG07
● Technical :
o 135° injector or Application Pump
o Double Hopper or OptiCenter for quality improvement (top = fresh / bottom = recovery)
o UltraSonic Sieve for improved powder handling
o Cyclone for improvement of powder quality and Color Change
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GEMA Design Recommendations
● Application :
o Design Speed up to max 8 m/min with 2 wheels parallel
o Faster line speeds only after testing => More stations
o Powder needs time to settle on the wheel, at 8 m/min with 30 rpm the first 2 turns limited powder adhesion
o Fresh powder for top guns for top quality
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GEMA Design Recommendations
Thank you very
much for your
time.
