Hamburg, September 2019
This year, the parent company of the LEHVOSS Group, Lehmann&Voss&Co., celebrates its 125th company anniversary. Under the motto “Inspired by technology and innovation – for 125 years” different business areas of the LEHVOSS Group will present themselves at the leading trade fair of the plastics industry with their products and new developments based on 125 years of experience.
3D printed sailboat from custom-made LUVOCOM® 3F with carbon fibres
The Italian Ocore company develops and produces 3D printed components. Its focus is on applications in boat building. It uses a self-made 3D printing system, including a robot, an extruder, a nozzle and software. The demonstrator exhibited at K 2019 and printed with LUVOCOM 3F PAHT® CF proves the technical feasibility of boats and components manufactured by means of 3D printing. With the corresponding materials and printing technologies parts can be produced which meet the requirements of industry. Apart from boats, mould making through 3D printing for classical GRP boats is another focal area.
LUVOCOM® 3F filaments for 3D printing
Apart from high performance compounds for classical processing such as injection moulding and extrusion, the LEHVOSS Group has been offering since 2012 also materials for 3D printing. LUVOSINT® for powder bed processes and LUVOCOM® 3F for extrusion based processes such as FFF (fused filament fabrication), are customized for the respective printing processes and applications. LUVOCOM 3F is available as a granulate and printing filaments, the latter produced and offered by well-known filament manufacturers and on the market since 2017.
At K 2019 the LEHVOSS Group presents its own product range of 3D printing filaments. Under the name LUVOCOM® 3F Filament, four different materials are offered. These are products based on PAHT® and PET, two of them are reinforced by carbon fibres. The materials are characterised by a particularly good processability, also in an unheated installation space, freedom from distortion and high strengths, in particular also in the building component.
To ensure quality standards and a uniform printing quality, the filaments have a certification. Furthermore, the reproducible quality of building components is guaranteed through the co-operation with well-known printer manufacturers. At K 2019 the LEHVOSS Group presents itself with the Ultimaker company, a globally operating manufacturer of 3D printers. Ultimaker presents the most recent generation of machines which are provided with additional aggregates that make serial production even more reliable. The LUVOCOM 3F products are already integrated in the machine software so that the start of printing is significantly facilitated.
In this way industrial applications, including serial manufacturing, are today possible through 3D printing in the FFF process and offer a technical and economic alternative and supplement to injection moulding.
LUVOCOM® 25 – Compounds for metal substitution in demanding automotive applications
The LUVOCOM 25 product line is based on ForTii® Ace, a special class of particularly rigid high-temperature PPA of the polymer manufacturer DSM. Based on this polymer, the LEHVOSS Group offers compounds for particularly demanding applications.
A first area of application includes all-plastic gearbox selector forks. To advance their development in the entire automotive supply chain, a co-operation has been set up between DSM, CarNaTrix®, a company of KOKI Technik Transmission Systems GmbH. Within the framework of this partnership materials and component constructions are developed and optimised to allow for new breakthrough systems in the field of gears. A result of this co-operation will be presented at the fair stand with a functioning demonstrator.
Large format sunroof frames for automobiles made of LUVOTECH®
Another co-operation of the LEHVOSS Group with a renowned company supports the further development of the roof systems for automobiles. The co-operation partner is Hyundai Advanced Materials (HAM). The co-operation focuses in this field on the elaboration of concepts and the development of customised materials for large-volume injection moulding parts.
A result of this work is LUVOTECH® 3-50154, a compound which combines a proprietary extrusion technology with a blend of PA6 with an amorphous component, flow media and a special flat glass fibre. By means of this material all mechanical demands of the end customer can be met. The optimised material shows a minimal distortion tendency, which is particularly important for the exhibited components, since a large format pane of glass is glued in a custom-fit manner into the component. It must have a good adhesion which must likewise be safeguarded by the material. Furthermore, an atmospheric exposure test according to SAE J 2527 was passed.
Based on this technology, other material classes, eg on the basis of PA66 and PPA, provide for further possibilities to substitute metal and focus on lightweight construction.
Mini suspension – innovative concept for racing bikes
To achieve maximum performance in sports, all technical possibilities have always been exhausted. This is particularly obvious in cycling. Futuristically looking, highly stressable and light bicycle frames and mounting parts are always attracting a lot of interest.
Performance can also be enhanced through apparently subordinate components like the flexible suspension seat post (“mini suspension”) presented at the LEHVOSS Group fair stand. As a result of the system-based suspension and cushioning of the road bumps, biomechanics and driving ergonomics are significantly improved. This is achieved by a smart interplay of different components, manufactured from heavy-duty 3D printing materials from the LUVOCOM® 3F printing range and injection moulding materials of the LEHVOSS Group. During the first development step the validation was implemented in the prototype phase and pre-testing through 3D printed system components. Already at this stage it could be shown that the stress limits of the printed components were on a very high level. The assembly would have been movable. After the upstream testing the implementation of individual parts was made in the prototype injection mould. First a LUVOCOM® based on PA66 with carbon fibres was used. Simplified real tests confirmed already the simulation at this stage. The occurring loads were safely borne.
In the demonstrator it was shown that an almost complete implementation of such a highly developed suspension seat post made of plastics is possible.