TRAVERSE CITY, MI ‚ÄďMotor Co. and U-Haul International Inc. have begun field-testing the auto maker‚Äôs unique 3-wet painting process, as customers of the rent-a-truck service take delivery of E-Series vans painted with the new method.
The revolutionary process, which has been under development since 2002 byand its three main paint suppliers ‚Äď PPG Industries Inc., BASF Corp. and DuPont Automotive ‚Äď is designed to reduce the cost associated with automotive paint application, as well as lessen its effects on the environment.
Ford‚Äôs Avon Lake, OH, assembly plant is spearheading the project in a traditional paint booth modified to accommodate the 3-wet process.
Most auto makers today use a painting process that involves five steps, with the first being the application of an anti-corrosion phosphate coat.
From there, the vehicle goes through a spray-coating process, which includes a standalone primer booth.
During the final steps, the vehicle goes to the enamel booth, where a color coat, base coat and clear coat are applied. Between each coat, the vehicle is dried and then finished off in a final drying oven.
The 3-wet process effectively combines the primer and enamel booths, reducing the footprint of the paint booth by some 25% and shaving 15%-20% off the time it takes to paint a vehicle, Ford says.
The new method is more energy efficient and produces fewer volatile organic compounds and carbon-dioxide emissions. It also requires about 10 fewer employees to operate than a traditional paint booth.
Joe Hinrichs, Ford‚Äôs vice president-North American manufacturing, is expected to credit the technology for helping the auto maker reach its goal of environmental leadership during his speech today at the automotive Management Briefing Seminars here.
‚ÄúWhen you look at it, our long-term strategy and vision is to lead in environmental technologies and manufacturing processes,‚ÄĚ Hinrichs tells Ward‚Äôs. ‚ÄúTo be out in front leading with this new process is good for the environment and great for our customers. It fits into our vision of being an environmental leader.‚ÄĚ
How to combine the two booths was the tricky part in developing the process, he says. It took Ford researchers at the auto maker‚Äôs Dearborn, MI-based Scientific Research Laboratory years to formulate the additives to make the process possible.
The 3-wet system utilizes a high-solids-based paint foundation that contains more color pigment, therefore requiring less paint to cover a vehicle. The process allows three layers of wet paint to be applied one on top of another and baked once, eliminating the need for a paint oven between coats.
‚ÄúWhat we‚Äôre doing is spraying the prime layer, air flashing it, adding the base-coat layer, air flashing it, and then finally adding the clear-coat layer,‚ÄĚ Mary Ellen Rosenberger, paint manager, tells Ward‚Äôs during a recent visit to Ford‚Äôs Avon Lake plant.
‚ÄúSo what you have is a prime, base and clear ‚Äď wet on wet on wet ‚Äď without any dehydration or low-temperature ovens; just air flash,‚ÄĚ she says.
To eliminate an oven, Ford and its supplier partners had to devise a way to keep the various layers from dripping between applications. To defy gravity, so-called ‚Äúreality-control agents‚ÄĚ were developed, says Timothy P. Weingartz, senior technical specialist-global paint engineering.
‚ÄúAdditives that were put into our pigments and newly developed resins accommodate the system so you can put on all three wet layers,‚ÄĚ Weingartz says at the plant.
‚ÄúWhen you put it through the application spray equipment, it acts like a low-viscosity liquid ‚Äď more like water,‚ÄĚ he says. ‚ÄúAnd when it hits the side of the vehicle, it bodies up, and that‚Äôs where it defies gravity. It actually forms a wet matrix, so that it helps stop it from sliding down the side of the car.‚ÄĚ
Vehicles that have undergone the process have been subjected to extensive testing, Weingartz says, adding that so far the results have been spectacular. Trials were conducted in the U.S, as well as in Genk, Belgium, and the Asia/Pacific region.
Not only does the process produce a paint job that is equal or superior to those using traditional methods, it also is proving more resistant to chips and scratches, two main concerns among consumers.
‚ÄúAll of our testing to date shows there is absolutely no compromise (between 3-wet and traditional processes),‚ÄĚ Weingartz says. ‚ÄúWe‚Äôve measured some improvements in appearance and the durability is equivalent to anything in the industry.‚ÄĚ
Although the 3-wet process has undergone more than nine months of testing at the hands of Ford and its supplier partners, the ultimate test will be if the paint jobs can withstand the rigorous work load of a U-Haul rental truck.
Dean Cermeli, director-truck and trailer product at U-Haul, says his company will issue quarterly reports on the trucks as they travel around the U.S.
‚ÄúWe‚Äôre very excited to be a partner with Ford on this joint venture,‚ÄĚ Cermeli tells Ward‚Äôs in a phone interview. ‚ÄúAnything relating to sustainability and environment, we want to be on the bandwagon. It‚Äôs an important issue.
‚ÄúWe‚Äôre going to evaluate the painting process with Ford as (the moving vans) go through all thermal cycles,‚ÄĚ he says. ‚ÄúThat‚Äôs the nice part of U-Haul. The vans could be in New York one week and California the next. So we‚Äôll see the type of abuse this type of paint will get. We‚Äôre looking for them to have a real-world durability test.
‚ÄúOur timeline right now is to move into first-quarter 2008 as a commercial process, so ‚Äô08 vehicles will have this process,‚ÄĚ Weingartz tells Ward‚Äôs.
‚ÄúWe‚Äôre transitioning and using this data right now to continue to move forward with the process for all Ford vehicles. Eventually it will be global.‚ÄĚ