[article]
| Titre : |
Making automotive sealers behave : A cost-effective approach to extending the life of automobile bodies |
| Type de document : |
texte imprimé |
| Année de publication : |
2017 |
| Langues : |
Américain (ame) |
| Catégories : |
Adhésifs dans les automobiles
Assemblages (technologie)
Assemblages collés
Mastics
Température -- Contrôle
|
| Index. décimale : |
668.3 Adhésifs et produits semblables |
| Résumé : |
Prior to the 1980s, it was common for cars to rust. The lower doors and rocker panels were usually the first to go, followed by the floor pans, wheel wells and bumpers. Even the hood, deck lid and the roof were not immune. Aftermarket companies sprang up to “undercoat” cars to prevent rust. Automakers followed suit and offered undercoating as an option as they sought a solution.
Next came modern sealer technologies, which offered the opportunity to prevent corrosion in the places where it was most prevalent. This was far better than aftermarket solutions, which involved drilling holes and installing plugs after spraying. Sealers were incorporated into both the design and the manufacturing process. First applied manually, the sealers were an improvement, but still were unreliable.
In the ’80s, robotics were just coming into their own, and they offered the opportunity to automate the repetitive, tedious, high-precision tasks of which humans quickly grow tired—including the application of sealer. But there was one major problem: hand-eye coordination. A human could watch the bead as it was being applied and change their speed, angle, distance to the part, etc., to create a good bead―something a robot wasn’t capable of doing. For a while, it seemed like robots weren’t cut out for this type of application. Then, in 1990, Saint Clair Systems (SCS) introduced new methods and devices for controlling the temperature of the sealer as it was dispensed, making the application viable. Today, robotically applied sealer is the norm throughout the industry, and virtually every successful system incorporates some form of temperature control to stabilize sealer viscosity. |
| Note de contenu : |
- Fig. 1. Temperature-controlled robotic sealer systems
- Fig. 2. Sealer pumping station
- Fig. 3. Sealer piping routing examples
- Fig. 4. Sealer dispense celle piping examples
- Fig. 5. Sealer viscosity vs. temperature
- Fig. 6. Bead with vs. temperature
- Fig. 7. Pedestal
- Fig. 8. Patented cover systems. The photos shows the internal arrangement, functions and the implementation in various piping/header assemblies of both the flexible and profile traced cover versions
- Fig. 9. Coaxial hose system. This shows the internal arrangement of the assembly and how the blocks route temperature-conditioned water around the inner hose to create a flexible, high-pressure tube-intube heat exchanger
- Fig. 10. Header cover layout
- Fig. 11. Point-of-application temperature control system
- TABLE : Pune climate data |
| En ligne : |
http://www.adhesivesmag.com/articles/95305-making-automotive-sealers-behave |
| Format de la ressource électronique : |
Web |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28758 |
in ADHESIVES & SEALANTS INDUSTRY (ASI) > Vol. 24, N° 3 (03/2017)
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Making automotive sealers behave in ADHESIVES & SEALANTS INDUSTRY (ASI), Vol. 24, N° 3 (03/2017)
