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Pre-programmed for cost-effectiveness in INTERNATIONAL SURFACE TECHNOLOGY (IST), Vol. 11, N° 1 (2018)

[article]  inINTERNATIONAL SURFACE TECHNOLOGY (IST) > Vol. 11, N° 1 (2018) . - p. 8-10 Titre : Pre-programmed for cost-effectiveness Type de document : texte imprimé Année de publication : 2018 Article en page(s) : p. 8-10 Langues : Anglais (eng) Catégories : Ateliers de peinture industrielle Ateliers de peinture industrielle -- Nettoyage Coût-Efficacité Système de pulvérisation (technologie) Index. décimale : 667.9 Revêtements et enduits Résumé : Investing in a new rotary atomiser and a new proportioner allowed Carbo Kohlensäurewerke to improve the cost-effectiveness of its paints shop over the longer term. In addition, the quality of the coatings now significantly exceeds the company's original requirements. Note de contenu : - A permanent reduction in overspray - High application efficiency - Complete system for rapid installation - Coating thickness is the key consideration - Improved ultrasound test - Reduction in cleaning - Fig. 1 : Every year Carbo Kohlensäurewerke inspects and coats around, 30 000 bottles at its plant in Bad Hönningen - Fig. 2 : Following the move to the new system, the paint is now applied to the base in one step and the coatings are thinner and more even - Fig. 3 : The challenges involved in setting up the new system lay in the details. The insulated layout meant that the pump had to be installed in the existing plastic cabinet to avoid problems with the electrostatic system - Fig. 4 : Carbo Kohlensäurewerke acts as the test centre for the gas bottles. This process involves specific requirements relating to the thickness of the coating - Fig. The project is satisfied. The newly installed paint application system has reduced the proportion of overspray and therefore also the amount of cleaning work needed Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30303 [article]

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Generating electricity from waste heat from thermal exhaust air purification / Robert Klamser in INTERNATIONAL SURFACE TECHNOLOGY (IST), Vol. 11, N° 1 (2018)

[article]  inINTERNATIONAL SURFACE TECHNOLOGY (IST) > Vol. 11, N° 1 (2018) . - p. 11-13 Titre : Generating electricity from waste heat from thermal exhaust air purification Type de document : texte imprimé Auteurs : Robert Klamser, Auteur Année de publication : 2018 Article en page(s) : p. 11-13 Langues : Anglais (eng) Catégories : Air -- Epuration Ateliers de peinture industrielle Chaleur -- Récupération Electricité Energie -- Récupération Extraction d'air, Système d' Index. décimale : 667.9 Revêtements et enduits Résumé : JOT has already reported on the benefits of using micro gas turbines for direct electricity generation from the thermal energy of VOC emissions after exhaust air purification. The economic efficiency of direct electricity generation from VOC emissions is reduced for companies with in-house painting facilities and exhaust air flows showing a material composition critical for micro gas turbines. In such cases, it is advisable to generate electricity from waste heat from conventional thermal exhaust air purification systems. Note de contenu : - Direct energy production from VOC emissions - Energy production from waste heat - The conversion of the noxious substances - Thermal afterburning - Regenerative afterburning - The electricity generation process - Holistic analysis - Figure : Thermal afterburning with subsequenty electricity generation from the waste heat using a steam process Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30304 [article]

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Strategically positioned with "Paint Shop 5" / Bodo Kleie in INTERNATIONAL SURFACE TECHNOLOGY (IST), Vol. 11, N° 1 (2018)

[article]  inINTERNATIONAL SURFACE TECHNOLOGY (IST) > Vol. 11, N° 1 (2018) . - p. 14-16 Titre : Strategically positioned with "Paint Shop 5" Type de document : texte imprimé Auteurs : Bodo Kleie, Auteur Année de publication : 2018 Article en page(s) : p. 14-16 Langues : Anglais (eng) Catégories : Air -- Epuration Ateliers de peinture industrielle Automatisation Automobiles -- Pièces Automobiles -- Revêtements:Automobiles -- Peinture Capacité de production Déchets industriels -- Elimination Economies d'énergie Efficacité énergétique Fiabilité Index. décimale : 667.9 Revêtements et enduits Résumé : A German supplier to the automotive industry has doubled its production capacity with the installation of a new, fully automatic paint shop for bumpers and other vehicle exterior components. The key features of the nex paint line are its energy efficiency and reliable operation. Note de contenu : - New skids developed - Energy-efficient, reliable waste air treatment - Innovative dry overspray separation process - Ideal indoor climate - First approval already received - Fig. 1 : The parts are pre-treated using a wet process in a five-zone machine. The majority of the water frm the pre-treatment process is removed in blow-off zones and two tipping stations with moving separator nozzles, before the parts pass into the dry-off oven - Fig. 2 : The parts are precisely positioned on the skids with the help of parts holders and then pass through the coating process. The parts must not move in relatioin to the application system - Fig. 3 : The parts are coated eitherusing a conventional process with interim drying and cooling or an integrated paint process (IPP), also known as wet-on-wet. The application of the individual coats, is moniroted for quality purposes by the control booths - Fig. 4 : The walk-in, maintenance-friendly air recirculationunits are located on two floors Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30305 [article]

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Drying vehicle bodies from the inside / Günter Buzer in INTERNATIONAL SURFACE TECHNOLOGY (IST), Vol. 11, N° 1 (2018)

[article]  inINTERNATIONAL SURFACE TECHNOLOGY (IST) > Vol. 11, N° 1 (2018) . - p. 17 Titre : Drying vehicle bodies from the inside Type de document : texte imprimé Auteurs : Günter Buzer, Auteur Année de publication : 2018 Article en page(s) : p. 17 Langues : Anglais (eng) Catégories : Automobiles -- Carrosseries Buse (tuyère) Chauffage -- Appareils et matériels Economies d'énergie Revêtement -- Séchage:Peinture -- Séchage Revêtements -- Finition:Peinture -- Finition Ventilation Index. décimale : 667.9 Revêtements et enduits Résumé : A newly developed process allows car bodies to be dried from the inside out. This innovative technology meets all the requirements for the drying processes of the future. The transverse operating mode of the new process, which is in use for the first time, makes it possible to design highly compact systems. Note de contenu : - Defining individual heating and cooling processes - Figure : The bodies are heated from the inside out using nozzles with long throw distances. The air flow in the innovative drying process guarantees the best possible top coat finish. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30306 [article]

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Excellent light conditions for surface inspection in INTERNATIONAL SURFACE TECHNOLOGY (IST), Vol. 11, N° 1 (2018)

[article]  inINTERNATIONAL SURFACE TECHNOLOGY (IST) > Vol. 11, N° 1 (2018) . - p. 18-19 Titre : Excellent light conditions for surface inspection Type de document : texte imprimé Année de publication : 2018 Article en page(s) : p. 18-19 Langues : Anglais (eng) Catégories : Assurance qualité Automobiles -- Carrosseries Contrôle technique Coût -- Contrôle Détection de défauts (Ingénierie) Diodes électroluminescentes Eclairage Economies d'énergie Qualité -- Contrôle Index. décimale : 667.9 Revêtements et enduits Résumé : A new LED light tunnel makes the final inspections of painted vehicle bodies much simpler and more efficient. Adjustable light units allow the light emitted to be adapted to the colour of the body. The results are a higher surface quality and lower maintenance, energy and reworking costs. Note de contenu : - Better reflected image - Less reworking of pale-coloured paintwork - Reduced maintenance and energy costs - Fig. 1 : Comprehensive control options, which are coordinated with the employees' biorythms, allow more defects to be identified immediatly - Fig. 2. The vertical arrangement of the lighting elements allows strips of light in up to three different colours to be produced. this creates phase transitions where the defects (marked here in th epicture) can be more easily identified - Fig. 3. The clearer the reflected image, the easier it is to spot faults. The reflected image is harder to see on pale-coloured vehicle Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30307 [article]

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Powerful pumps for viscous materials / J. Wagner in INTERNATIONAL SURFACE TECHNOLOGY (IST), Vol. 11, N° 1 (2018)

[article]  inINTERNATIONAL SURFACE TECHNOLOGY (IST) > Vol. 11, N° 1 (2018) . - p. 22-23 Titre : Powerful pumps for viscous materials Type de document : texte imprimé Auteurs : J. Wagner, Auteur Année de publication : 2018 Article en page(s) : p. 22-23 Langues : Anglais (eng) Catégories : Anticorrosion Dilution Haut extrait sec Hélices marines Pompes Revêtements -- Appareils et matériels:Peinture -- Appareils et matériels Revêtements protecteurs Index. décimale : 667.9 Revêtements et enduits Résumé : The maintenance measures needed in the infrastructure sector and the demand for heavy-duty corrosion protection are constantly increasing. Powerful, reliable application systems and equipment are needed for protective coatings based on extremely viscous high-solids paints. Note de contenu : - Problems caused by inadequate pumps - Thinning high-solids paints puts the warranty at risk - Automatic mixing guarantees the correct composition - Stainless steel pump parts allow for a wider range of applications - Powerful pumps with high ratios - Ease of use - Investment in new technology versus high repair costs - Fig. 1 : Ships' propellers are exposed to extreme stressees. The materials used to coat them require a high-performance mixing and dosing system - Fig. 2 : This two-component system has been specially designed for the application of high-solids paints for heavy-duty corrosion protection Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30308 [article]

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Offshore repairs in record time in INTERNATIONAL SURFACE TECHNOLOGY (IST), Vol. 11, N° 1 (2018)

[article]  inINTERNATIONAL SURFACE TECHNOLOGY (IST) > Vol. 11, N° 1 (2018) . - p. 24-25 Titre : Offshore repairs in record time Type de document : texte imprimé Année de publication : 2018 Article en page(s) : p. 24-25 Langues : Anglais (eng) Catégories : Anticorrosifs Anticorrosion Revêtements bi-composant:Peinture bi-composant Structures offshore -- Entretien et réparations Structures offshore -- Revêtements protecteurs Index. décimale : 667.9 Revêtements et enduits Résumé : A solvent-free two-component coating has been developed during the course of a research project, which can be used to repair corrosion protection coatings on offshore wind turbines. The new coating also cures under water in record time and has high levels of impact and abrasion resistance. Note de contenu : - The goal is simpler maintenance and repairs - Curing period four hours shorter than before - Fig. 1 : Repair to the coatings on offshore wind turbines are time-consuming and therefore costly - Fig. 2 : The new system allows high-quality, long-lasting reparis to be carried out quickly to damaged coatings Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30309 [article]

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Sweden - a pioneer in the field of automation in INTERNATIONAL SURFACE TECHNOLOGY (IST), Vol. 11, N° 1 (2018)

[article]  inINTERNATIONAL SURFACE TECHNOLOGY (IST) > Vol. 11, N° 1 (2018) . - p. 26-29 Titre : Sweden - a pioneer in the field of automation Type de document : texte imprimé Année de publication : 2018 Article en page(s) : p. 26-29 Langues : Anglais (eng) Catégories : Ateliers de peinture industrielle Automatisation Lasers -- Applications industrielles Peinture au pistolet Revêtements poudre:Peinture poudre Robots industriels Index. décimale : 667.9 Revêtements et enduits Résumé : Sweden is responsible for any number of innovations which range from Viking longboats, dynamite and ball bearings through to the SLR camera. The Scandinavians also take a progressive approach to powder coating and have introduced modern technologies and high levels of automation into the process. The three examples below demonstrate the intelligent uses of automation in Swedish industry. Note de contenu : - Contour detection using lasers - From die casting directly to powder coating with the help of robots - Bold investments that have paid off - Fig. 1 : The high level of automation allows a much greater variety of parts to be coated cost-effectively - Fig. 2 : The use of a new powder gun has produced a much more consistent finish on forklift trucks - Fig. 3 : Powerful chainsaws are the trademark of the well-known Swedish company Husqvarna. Up to 13 000 parts are produced and coated every day in its main plant in the town of Husqvarna - Fig. 4 : The robotic guns produce a consistent, reproducible coating - Fig. 5 : A newly developed gun axis is the ideal solution for coating the insides of housings and complex parts. This system automatically positions each individual gun vertically Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30404 [article]

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A high degree of confidence in the quality in INTERNATIONAL SURFACE TECHNOLOGY (IST), Vol. 11, N° 1 (2018)

[article]  inINTERNATIONAL SURFACE TECHNOLOGY (IST) > Vol. 11, N° 1 (2018) . - p. 30-31 Titre : A high degree of confidence in the quality Type de document : texte imprimé Année de publication : 2018 Article en page(s) : p. 30-31 Langues : Anglais (eng) Catégories : Ateliers de peinture industrielle Automatisation Entretien et réparations Revêtements poudre:Peinture poudre Système de changement de couleur Index. décimale : 667.9 Revêtements et enduits Résumé : In the powder coating sector, fast colour changes, the quality of the end product, the reliability of the application system and the maintenance costs are key factors in ensuring that businesses are lean and profitable. In order to achieve this objective, two British powder coating companies invested in dense phase technology and the latest generation of equipment. Note de contenu : - Consistent powder output - Switching to an automated coating system - Maintenance-free operation - Fig. 1 : The first HDLV pump pinch valve that was replaced after over 4000 hours of operation - Fig. 2 : The system makes the whole process much more efficient. It is easier to operate and the finish is of a higher quality and more uniform Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30405 [article]

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Simply apply two coats in INTERNATIONAL SURFACE TECHNOLOGY (IST), Vol. 11, N° 1 (2018)

[article]  inINTERNATIONAL SURFACE TECHNOLOGY (IST) > Vol. 11, N° 1 (2018) . - p. 32-33 Titre : Simply apply two coats Type de document : texte imprimé Année de publication : 2018 Article en page(s) : p. 32-33 Langues : Anglais (eng) Catégories : Anticorrosion Métaux -- Revêtements protecteurs Revêtements poudre:Peinture poudre Traitement corona Tribologie (technologie) Index. décimale : 667.9 Revêtements et enduits Résumé : Powder coatings that protect steel from corrosion are generally applied in two layers. One way of improving the efficiency of this process is known as powder-on-powder application, which involves omitting the interim curing phase. A manufacturer of metal components has successfully put this process into practice using standard powder coatings. Note de contenu : - The challenge is powder-on-powder - Significant additional warehousing costs - Corona plus tribo - Huge increase in efficiency - Figure : The coating meets all the corrosion protection requirements with only one curing process for both the primer and the top coat Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30406 [article]

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FEM simulation of loads improves safety in INTERNATIONAL SURFACE TECHNOLOGY (IST), Vol. 11, N° 1 (2018)

[article]  inINTERNATIONAL SURFACE TECHNOLOGY (IST) > Vol. 11, N° 1 (2018) . - p. 34-35 Titre : FEM simulation of loads improves safety Type de document : texte imprimé Année de publication : 2018 Article en page(s) : p. 34-35 Langues : Anglais (eng) Catégories : Ateliers de peinture industrielle Chargement et déchargement Crochets de peinture Eléments finis, Méthode des Facteur de charge Sécurité du travail Simulation par ordinateur Index. décimale : 667.9 Revêtements et enduits Résumé : For paint shops that need to increase their internal safety levels, the finite element method is a cost-effective alternative for simulating the load capacity of hooks and hangers. This process can be used during the development phase and helps to identify potential cost savings. Note de contenu : - More effective planning in the development phase - Division into finite elements - Fig. 1 : Load tests and certification processes for hooks and hangers are used to improve internal safety levels - Fig. 2 : The FEM involves dividing the painting hook into finite elements that cover the entire hook like a net. The density of the net determines the accuracy of the simulation - Fig. 3 : In the representation of the maximum stress, coloured markers are used to show the areas where the stresses caused by the load have the greatest impact and where a change in the shape of the product would make it stiffer - Fig. 4 : the areas of maximum displacement are shown in colour on the basis of the deformation and include an indication of th eminimum and maximum ranges - Fig. 5 : In order to represent the distribution of the safety factors, the minimum and maximum ranges of the safety factors are identified. The greater the safety factor, the more stable the component in the indicated location Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30407 [article]

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Aiming high with a new conveyor system in INTERNATIONAL SURFACE TECHNOLOGY (IST), Vol. 11, N° 1 (2018)

[article]  inINTERNATIONAL SURFACE TECHNOLOGY (IST) > Vol. 11, N° 1 (2018) . - p. 36-37 Titre : Aiming high with a new conveyor system Type de document : texte imprimé Année de publication : 2018 Article en page(s) : p. 36-37 Langues : Anglais (eng) Catégories : Ateliers de peinture industrielle Convoyeurs Index. décimale : 667.9 Revêtements et enduits Résumé : Liebherr has invested in a new coating line for its crane components, some of which weigh several tonnes. A heavyduty power+free conveyor ensures that the parts, which are more than 12 meters high, can be transported smoothly. Note de contenu : - A solution that is far from standard - Full blasting coverage - Assembly at a height of 14 meters - An overview of the power+free system at Liebherr in Biberach - Fig. 1 : A tower crane component leaving the automatic blasting booth - Fig. 2 : The approach lines to the top coat booths - Fig. 3 : A tower crane component about to enter the base coat booth Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30408 [article]

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Ready for new applications / Gerhard Koblenzer in INTERNATIONAL SURFACE TECHNOLOGY (IST), Vol. 11, N° 1 (2018)

[article]  inINTERNATIONAL SURFACE TECHNOLOGY (IST) > Vol. 11, N° 1 (2018) . - p. 40-42 Titre : Ready for new applications Type de document : texte imprimé Auteurs : Gerhard Koblenzer, Auteur Année de publication : 2018 Article en page(s) : p. 40-42 Langues : Anglais (eng) Catégories : Nettoyage -- Appareils et matériels Pièces usinées -- Nettoyage Index. décimale : 667.9 Revêtements et enduits Résumé : Enclosed machines are the ideal solution for the ultra-fine cleaning of parts with complex shapes because all types of liquid chemical cleaning and drying processes can be used. In addition, new technologies such as cyclic nucleation and hybrid procedures are available. Note de contenu : - Problems in ultra-fine cleaning - Fewer cleaning and rinsing processes needed - Cleaning without carry-over - Example from the semi-conductor industry - Fig. 1 : The benefits of enclosed chamber machines, in this case an automated top-loader, include the hermetically cleaning chambers - Fig. 2 : Where there are two or more cleaning chambers, the cleaning and rinsing stages can be completely separated, with no risk of carry-over. This allows the system to be integrated into a clean room environment - Fig. 3 : The enclosed machines are also ideal for ultra-fine cleaning of large components, such as these aluminium profiles which are 4000 x 700 x 700 mm in size - Fig. 4 : Cleaning chambers and fittings with surfaces that have beenspecially treated and then electropolished contribute to the quality of the cleaning process Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30409 [article]

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Removing machining oil effectively in INTERNATIONAL SURFACE TECHNOLOGY (IST), Vol. 11, N° 1 (2018)

[article]  inINTERNATIONAL SURFACE TECHNOLOGY (IST) > Vol. 11, N° 1 (2018) . - p. 44-45 Titre : Removing machining oil effectively Type de document : texte imprimé Année de publication : 2018 Article en page(s) : p. 44-45 Langues : Anglais (eng) Catégories : Dégraissage (nettoyage) Nettoyage à sec Pièces usinées -- Nettoyage Index. décimale : 667.9 Revêtements et enduits Résumé : At a car manufacturing company, aluminium crankcases are pre-heated in an oven in preparation for the following process. A customised dry cleaning system using vacuum suction ensures that the parts are clean before being pre-heated. Note de contenu : - Vacuum suction proves to be the solution - Cleaning tests in the technical centre - Automated solution integrated into the production line - Fig. 1 : A cleaning system designed for the task in question was developed on the basis of cleaning tests. It reduces the amount of oil contamination by around two-thirds - Fig. 2 : The dry cleaning system has a pressure tank where a vacuum in constantly generated. It operates without the use of compressed air. The pressure tank is connected to the vacuum chamber. The contamination that has been removed is collected and separated in the tank Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30410 [article]

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Carefully managed water system for complex paint pre-treatments in INTERNATIONAL SURFACE TECHNOLOGY (IST), Vol. 11, N° 1 (2018)

[article]  inINTERNATIONAL SURFACE TECHNOLOGY (IST) > Vol. 11, N° 1 (2018) . - p. 46-47 Titre : Carefully managed water system for complex paint pre-treatments Type de document : texte imprimé Année de publication : 2018 Article en page(s) : p. 46-47 Langues : Anglais (eng) Catégories : Dégraissage (nettoyage) Distillation Eaux usées -- Recyclage Gestion des ressources en eau Pièces usinées -- Nettoyage Index. décimale : 667.9 Revêtements et enduits Résumé : A manufacturer of alloy wheels and aluminium rims has invested in two vacuum distillation units which effectively recycle the wastewater from its pre-treatment process and create a sustainable water circulation system. Note de contenu : - Recycling wastewater containing oil and grease - Removing sludge and films during distillation - The composition of the process water determines the effectiveness - Flexible process for the reuse of distillate - Figure : Large amounts of sludge cause films to form in conventional heat exchangers. The vacuum distillation unit uses circulating ceramic beads to remove sludge and films during distillation and ensure the best possible heat transfer Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30411 [article]

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Nature as a role model in INTERNATIONAL SURFACE TECHNOLOGY (IST), Vol. 11, N° 1 (2018)

[article]  inINTERNATIONAL SURFACE TECHNOLOGY (IST) > Vol. 11, N° 1 (2018) . - p. 48-50 Titre : Nature as a role model Type de document : texte imprimé Année de publication : 2018 Article en page(s) : p. 48-50 Langues : Anglais (eng) Catégories : Construction sandwich Polypropylène Structure en nid d'abeilles Technique des plasmas Traîtements de surface Index. décimale : 667.9 Revêtements et enduits Résumé : Innovative solutions are needed to address future strategies such as resource conservation and energy efficiency. By producing ultra-light honeycomb panels and using atmospheric pressure plasma for surface treatment before painting, a lightweight panel manufacturer from Thuringia supplies high quality components to the commercial vehicle industry. Note de contenu : - Nature's patents in vehicle construction - Effective change - Optimum paint adhesion guaranteed - Fig. 1 : Inspired by bionics : polypropylene honeycomb panels have high stability and low weight - Fig. 2 : Modeled on natural atmospheric discharges, this technology generates plasma by high voltage. This means that it can be used for pretreating materials surfaces - Fig. 3 : Before priming with filler and painting, the large PP sandwich panels at MonoPan are pretreated with atmospheric pressure in a fully automatic process lasting just 20 to 40 seconds - Fig. 4 : The plasma-treated, pre-painted sandwich panels are used to construct low-weight box bodies for light trucks made by leading automotive manufacturers - Fig. 5 : 28 Openair-Plasma rotary nozzles carry out the microfine cleaning, static discharging and simultaneous activation of the PP panels. The plasma effect ensures full-surface wettability and significantly increases the adhesive characteristics of the plastic surface - Fig. 6 : The large-panel plasma unit is designed to be maintenance friendly, so th eplasma nozzles can be raised to the desired height for servicing and accessed quickly via two walkways Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30417 [article]

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Blasting aluminium - business as usual ? in INTERNATIONAL SURFACE TECHNOLOGY (IST), Vol. 11, N° 1 (2018)

[article]  inINTERNATIONAL SURFACE TECHNOLOGY (IST) > Vol. 11, N° 1 (2018) . - p. 52-53 Titre : Blasting aluminium - business as usual ? Type de document : texte imprimé Année de publication : 2018 Article en page(s) : p. 52-53 Langues : Anglais (eng) Catégories : Aluminium L'aluminium est un élément chimique, de symbole Al et de numéro atomique 13. C’est un métal pauvre, malléable, de couleur argent, qui est remarquable pour sa résistance à l’oxydation13 et sa faible densité. C'est le métal le plus abondant de l'écorce terrestre et le troisième élément le plus abondant après l'oxygène et le silicium ; il représente en moyenne 8 % de la masse des matériaux de la surface solide de notre planète. L'aluminium est trop réactif pour exister à l'état natif dans le milieu naturel : on le trouve au contraire sous forme combinée dans plus de 270 minéraux différents, son minerai principal étant la bauxite, où il est présent sous forme d’oxyde hydraté dont on extrait l’alumine. Il peut aussi être extrait de la néphéline, de la leucite, de la sillimanite, de l'andalousite et de la muscovite. L'aluminium métallique est très oxydable, mais est immédiatement passivé par une fine couche d'alumine Al2O3 imperméable de quelques micromètres d'épaisseur qui protège la masse métallique de la corrosion. On parle de protection cinétique, par opposition à une protection thermodynamique, car l’aluminium reste en tout état de cause très sensible à l'oxydation. Cette résistance à la corrosion et sa remarquable légèreté en ont fait un matériau très utilisé industriellement. L'aluminium est un produit industriel important, sous forme pure ou alliée, notamment dans l'aéronautique, les transports et la construction. Sa nature réactive en fait également un catalyseur et un additif dans l'industrie chimique ; il est ainsi utilisé pour accroître la puissance explosive du nitrate d'ammonium. Pièces usinées Traitement de surface par impact Index. décimale : 667.9 Revêtements et enduits Résumé : Aluminium parts are increasingly being subjected to blasting processes, often using abrasives made from aluminium. This offers a number of advantages, but also has an impact on the design of the blasting machines. Note de contenu : - Designing the machines - The best types of machine - Short blasting times - Overhead parts conveyors - Fig. 1 : Die-cast aluminium parts leaving a wire mesh conveyor blast machine - Fig. 2 : The aluminium test centre : a continuous overheat rail blasting machine for processing aluminium parts Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30418 [article]

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Reducing reworking and powder consumption / Peter Kreier in INTERNATIONAL SURFACE TECHNOLOGY (IST), Vol. 11, N° 1 (2018)

[article]  inINTERNATIONAL SURFACE TECHNOLOGY (IST) > Vol. 11, N° 1 (2018) . - p. 54-57 Titre : Reducing reworking and powder consumption Type de document : texte imprimé Auteurs : Peter Kreier, Auteur ; Rainer Züst, Auteur ; Magnus Graf, Auteur Année de publication : 2018 Article en page(s) : p. 54-57 Langues : Anglais (eng) Catégories : Déchets -- Réduction Epaisseur -- Mesure Mesure -- Instruments Peinture -- Consommation Revêtements poudre:Peinture poudre Ultrasons Index. décimale : 667.9 Revêtements et enduits Résumé : The systematic measurement of powder coatings to keep their thickness to a minimum is a simple way of achieving major environmental benefits. Hand-held ultrasonic devices are the ideal solution for making non-contact coating measurements of this kind. Note de contenu : - Supplying hand-held air-ultrasonic measuring equipment for 20 years - Comparison with alternative measuring processes - Simple, universal ultrasonic measurement systems - Easy measurements even on curved surfaces - Few disadvantages to ultrasonic powder coating thickness measurement - Saving powder and avoiding reworking and faults - Measuring powder coating thickness on facade panels - Greater potential for reducing environmental impacts and saving money - The benefits of systematic measurement of powder coatings - Fig. 1 : Hand-held ultrasonic devices can produce reliable measurements even on curved surfaces, such as this cycle frame - Fig. 2 : Example of powder coated facade panels - Fig. 3 : Image of an uncured powder coating taken under a microscope. If the coating covers the surface, the visual appearanceof the coating will be the same across a wide range of different thicknesses - Fig. 4 : Weekly powder consumption - Table 1 : Weekly powder consumption with and without recovery - 775 kg powder used, 525 kg on the product, 250 kg wasted Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30419 [article]

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Non-destructive measurements with terahertz radiation in INTERNATIONAL SURFACE TECHNOLOGY (IST), Vol. 11, N° 1 (2018)

[article]  inINTERNATIONAL SURFACE TECHNOLOGY (IST) > Vol. 11, N° 1 (2018) . - p. 58-59 Titre : Non-destructive measurements with terahertz radiation Type de document : texte imprimé Année de publication : 2018 Article en page(s) : p. 58-59 Langues : Anglais (eng) Catégories : Automobiles -- Revêtements:Automobiles -- Peinture Contrôle non destructif Couches minces multicouches Epaisseur -- Mesure Ondes électromagnétiques Index. décimale : 667.9 Revêtements et enduits Résumé : Car paintwork has to withstand a wide range of stresses and therefore at least four different coats are generally applied to vehicle bodies. Until now there has been no non-destructive method of measuring the thickness of these multi-layer coatings on metal or plastic, but terahertz technology will soon change that. Note de contenu : - Operation - Comparing terahertz technology - Other applications - Fig. 1 : The terahertz pulse penetrates the plastic coating and is partially reflected at the material boundaries. The software calculates the thickness of each layer on the basis of the delay time of the reflections - Fig. 2 : Terahertz technology will make quality assurance processes noticeably more efficient, in particular in the automotive industry - Fig. 3 : When measuring a wedge cut, terahertz technology compares favourably with established methods, such as microscopy and magnetic induction Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30420 [article]

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