117 EJOT SE & Co. KG www.ejot.com/industry beginning for a particularly hard self-tapping tip without the risk of hydrogen embrittlement. Thus, the EJOT thin sheet metal screw SHEETtracs®, produced according to this so-called MAXXtip® material concept, can excellently form its thread in ultra-high strength sheet metals having an ultimate tensile strength of up to 1500 MPa. It is only necessary to ensure that the self-tapping tip always passes through the sheet completely. This opens up a wide range of applications that enable a secure connection for crashrelevant automotive components that can later be sustainably dismantled for recycling. Examples are bumpers, reinforcements on the B-pillar or seat structures to which addon parts are to be fastened. For the fastening of thicker sheet metals or in blind holes, this material concept can also be applied to the so-called Spiralform® screw. This screw requires an installation depth that excludes subsequent heavy stress on the self-tapping tip. This is achieved by calculating the screw length from the sum of the clamping part thicknesses, the length of the induction-hardened area and the length of 1.5 times the screw diameter. This enables a reliable application of the screw concept mentioned. Additionally, such a screw can be used for thread forming in cast steel materials. In this case, no threads have to be drilled into cast holes for fastening, so that it is possible to screw directly into these holes, provided that the geometry is suitable. This means that both tools and process steps can be saved on a sustainable basis. This unique combination of different heat treatment processes results in a new type of screw that, in addition to a head and shank area that is completely insensitive to hydrogen embrittlement, has a particularly hard and resistant self-tapping tip that extends the application range of direct fastening to ultra-high strength steels and cast steel materials in a process-reliable manner. With the MAXXtip® material concept, it is thus also possible to coat high-strength screws with a galvanic finish (e.g. Zn or ZnNi) without being exposed to the risk of delayed hydrogen embrittlement in otherwise critical applications. MAXXtip® at a glance � Process-reliable direct fastening in ultra-high strength steels and cast steel � No risk of hydrogen embrittlement – even with galvanic coatings � Removable joint – excellent reusability The MAXXtip® material concept is available for the EJOT screws SHEETtracs® and Spiralform® Company profile Cognizant Mobility GmbH Ingolstädter Straße 45 80807 Munich Phone: +49 89 92161 4500 mobility@cognizant-mobility.com www.cognizant-mobility.com Those who want the future need foresighted ideas. And a partner who understands them right from the start. Cognizant Mobility is a specialized solution provider for complex electronic and IT systems in trend topics that move the market. Whether software development and operation, connectivity solutions, E/E complete vehicle development, data analytics, cyber security, system integration or testing – with knowledge and experience we provide our customers with the necessary impulses, the technical know-how to turn the vision of the software defined vehicle into reality. For over 25 years, ServiceXpert has been an established engineering partner for leading commercial vehicles manufacturers and their supplier industry in Germany and Europe. We see ourselves as a service provider that always takes an entire approach from the development of a vehicle to after sales service. As part of the Cognizant Mobility network, ServiceXpert has complemented the Group‘s customer and service portfolio and has always made a continuous contribution to its economic success. In June 2023, ServiceXpert and Cognizant Mobility merged into one team as Cognizant Mobility GmbH! With the merger, Cognizant Mobility leverages the synergy of a common corporate structure and the trends of the automotive and truck market: development of software-defined vehicles and the digitalisation of sales and after sales. Advertisement
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