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Titre : Faster and better welding : Tools adaption reduces process times and improves weld quality Type de document : texte imprimé Auteurs : Stefan Mochev, Auteur ; Ulrich Endemann, Auteur Année de publication : 2018 Article en page(s) : p. 57-59 Langues : Anglais (eng) Catégories : Composites -- Soudage
Composites à fibres de verre
Matières plastiques -- Soudage
Polyamide 66
Soudage par gazIndex. décimale : 668.4 Plastiques, vinyles Résumé : Hot gas welding has now become an established alternative to vibration and infrared welding. The reasons for this are the mechanically and visually excellent welds obtained and the low-emission, particle-free process. A further development of the welding tool avoids long process times and reduces material degradation. Note de contenu : - Improvements demonstrated in practice
- Focus on the weld strength
- Fig. : A relatively minor modification to the hot gas tool not only reduces process time but improves weld quality at the same time
- Fig. 1 : The gas outlet zone of a conventional hot gas tool (left) and modified tool (right) with (a) and without (b) tubes as hot gas nozzles
- Fig. 2 : Comparison between the melt layer thicknesses obtained with a conventional and
a modified hot gas tool shows the reduced plasticizing time at a glance (material : Ultramid B3WG6 GPX, process medium : nitrogen, welding rib width : 4mm)
- Fig. 3 : Photos of melted welding ribs with a homogeneous structure due to the new gas channels (a) and crater-like structures opposite the hot gas nozzles in a conventional tool (b, actual component)
- Fig. 4 : With the modi¬fied tool, melt layer thickness is virtually the same for different distances between the hot gas nozzles and welding rib, which means a wider processing window (heating element temperature: 500°C, material: Ultramid A3WG6, process medium: nitrogen, welding rib width: 4mm)
- Fig. 5 : Comparison between the weld tensile strengths of two different materials achieved with a conventional and a modified hot gas tool (process medium : nitrogen, welding rib width : 4 mm)En ligne : https://drive.google.com/file/d/1K3-D_dar3NwmJRMoUpYGrLSrhm-DFXur/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31185
in KUNSTSTOFFE INTERNATIONAL > Vol. 108, N° 9 (09/2018) . - p. 57-59[article]Réservation
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