Lightweight Design Joining Technology
Against the background of economic and political constraints for saving raw materials and energy, lightweight design concepts are gaining increasing industrial importance, particularly in the automotive industry. Ejot GmbH & Co. KG, Bad Berleburg, Germany, offers a wide portfolio of joining solutions appropriate to lightweight design. The Delta PT screw, which is manufactured both of steel and aluminum, supports direct screw fastening in plastics, which achieves weight reductions thanks to a reduction of dimensions and the number of screw points. The plastic screw can be used for soft thermoplastics and is up to 85 % lighter than the steel version.
Achieving a strong fastening point is often not sufficient where soft thermoplastics are used, for example polypropylene or polyamide. Even optimizations such as larger screw diameters, wall thicknesses or screw depths are not entirely suitable for solving this problem by design measures. For these cases the company offers the Deltasert P insert of plastic, which, in combination with the screw, makes a reliable connection possible. With the insert, despite low wall thicknesses, which are necessary for structural reasons, a tubular profile can be realized, into which this connecting element can be screwed even with a low height.
Particularly in the automotive industry, the replacement of established materials, particularly metals, with more lightweight materials (such as endless fiber-reinforced plastics or honeycomb-core and foam-core structures) should by no means impair the performance of the components. For such materials, Ejot has developed the TSSD plastic boss. It is made of thermoplastic and is inserted into the plastic component at a defined rotational speed and axial load. The boss can be used both directly as a screw boss for the Delta-PT screw and directly as a connecting element.
Hall 5, booth C03
EJOT GmbH & Co. KG
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