EJOWELD®

En matière de technique de fixation, EJOWELD^® offre pour la toute première fois à l'utilisateur la possibilité de raccorder entièrement sans prétraitement (nettoyage, décapage, avant-trou) des parties à assembler des assemblages hybrides (matériau de construction légère / acier haute résistance) à l'aide d'un appareil de pose automatisable à élément de friction.

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The EJOWELD CFF^® friction element enables the joining of lightweight materials with ultra-high-strength sheet metal and is therefore especially applicable for demanding joining tasks in automotive structural parts. The large head with hollow lower head and the different lengths of the element allow the joining of light metal cover plates with ultra-high-strength steels in a broad application range and without any pre-holes. Flange widths from 18 mm are ideal for this friction element. This joining technology is universally applicable, process-reliable and allows a great variety of material thickness combinations. 
Cover plate: light metal (150-320 N / mm²), thickness 1.0 - 4.0 mm; 
Base plate: steel material (270-1.800 N / mm²), thickness 1.0 - 2.0 mm.

The SRE friction element is only half the size of the well-known CFF element. The material displaced during the joining process is conveyed under the head and shaped by the special drive bit. Due to its geometry, the EJOWELD SRE^® friction element is the ideal joining element for narrow flanges from 13 mm width with small head projections. The element is therefore predestined for the application in door and roof areas as well as add-on parts. This joining technology is particularly reliable and economical due to its low weight and short cycle time.
Cover plate: light metal (150-320 N / mm²), thickness 1.0 - 2.0 mm; 
Base plate: Steel material (600-1.800 N / mm²) Thickness 1.0 - 2.0 mm.

EJOT has extended the EJOWELD^® technology portfolio with another friction element, the EJOWELD^® REF. This joining element is hollow, geometrically based on the EJOWELD CFF^® and enables the joining of aluminum or FRP plates on aluminum sheets. With the support of a gradually controlled process, joints which are optimized regarding the original materials are created. A special advantage is the option to use the new REF together with a CFF element in one equipment. The only requirement is a specially anvil adaptor and an additional feeder. By selecting an appropriate program and feeder, three different material combinations (Al/St, Al/Al, FRP/Al) can be joined using just one equipment.

EJOWELD^® offre au spécialiste des technologies d’assemblage un système robotisable de pose d’éléments d’assemblage en soudure par friction. Ce système est particulièrement adapté aux assemblages multi-matériaux destiné à l’allégement comme par exemple l’aluminium sur les aciers à très haute ou ultra-haute limite élastique. Pour ce procédé d’assemblage innovant, l’utilisateur dispose dorénavant de l’aide de EJOWELD^® Application Check qui permet d’évaluer la viabilité des assemblages. Pour cela, il faudra connaître les natures et épaisseurs des matériaux à assembler ainsi que l’espace disponible pour les mouvements de la machine.

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