Herstellung und Charakterisierung hochfester Kunststoff-Metall-Hybride

Hoffmann, Leo; Faißt, Birgit; Kose, Kim; Eggers, Fred

doi:10.1007/s35725-016-0097-6

Cited by 3 publications

(3 citation statements)

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“…A small portion of the melt can solidify around the opening of the structure when being pushed out of the heat affected zone. By repeating the ablation process with multiple passes an undercut geometry can be created since more and more generated melt solidifies on the surface near the structure opening and its edges [22,28].…”

Section: Creating Micro-form-fitted Structures For Hybrid Components ...mentioning

confidence: 99%

Development of micro‐form‐fitted amorphous thermoplast/light metal hybrid components

Wurzbacher

Mascher

Wagner

et al. 2023

Materialwissenschaft Werkst

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In order to meet the high demands on tolerances and surface qualities, for example in automotive lighting applications, a hybrid part composed of a light metal (aluminium) and an amorphous thermoplastic (polycarbonate) could be an alternative to the established mono‐materials used today. Due to the lack of adhesion promoter systems for joining this specific material combination, a micro‐form‐fitted connection by creating undercut microstructures by laser ablation is used to achieve a full‐surface bond. First investigations are carried out to ensure the filling of these microstructures with different polycarbonate moulding compounds by over moulding in the injection moulding process. Subsequently, the influence of the moulding compound, the structure arrangement and the influence of a pickling treatment on the bond strength are analysed by tensile shear testing.

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Section: Creating Micro-form-fitted Structures For Hybrid Components ...mentioning

confidence: 99%

Development of micro‐form‐fitted amorphous thermoplast/light metal hybrid components

Wurzbacher

Mascher

Wagner

et al. 2023

Materialwissenschaft Werkst

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“…Hoffmann et al achieved higher joint strengths between metal sheets and molded-on rib structures by laser pre-treatment of the metal surfaces [6]. The increase in strength was referred to a microscopic interlock at the undercut structures generated by the laser pre-treatment of the metal sheets.…”

Section: Introductionmentioning

confidence: 99%

In-Mold-Assembly of Hybrid Bending Structures by Compression Molding

Stallmeister

Tröster

2022

KEM

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The further development of in-mold-assembly (IMA) technologies for structural hybrid components is of great importance for increasing the economic efficiency and thus the application potential. This paper presents an innovative IMA process concept for the manufacturing of bending loaded hybrid components consisting of two outer metal belts and an inner core structure made of glass mat reinforced thermoplastic (GMT). In this process, the core structure, which is provided with stiffening ribs and functional elements, is formed and joined to two metal belts in one single step. For experimental validation of the concept, the development of a prototypic molding tool and the manufacturing of hybrid beams including process parameters are described. Three-point bending tests and optical measurement technologies are used to characterize the failure behavior and mechanical properties of the produced hybrid beams. It was found that the innovative IMA process enables the manufacturing of hybrid components with high energy absorption and low weight in one step. The mass-specific energy absorption is increased by 693 % compared to pure GMT beams.

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“…The use of only FRP components comes along with challenges in areas of assembly techniques of manufactured components and challenges in economy of process and FRP semi-finished products [9]. Hybrid lightweight design approaches aim at weight reduction by reducing steel thickness and applying low density fiber-reinforced plastics (FRP) to regain structural stiffness and strength [10,11]. The use of residual process heat remaining from the hot stamping process allows to activate adhesives to bond FRP to hot stamped steel [12].…”

Section: Introductionmentioning

confidence: 99%

Influencing Intermetallic Layers of Hot Stamped Steel for Adhesively Bonded Plastic Metal Hybrids

Demes

Beuscher

Kühn

et al. 2019

KEM

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Hot stamping of high strength steel parts is an established way to realize today ́s structural lightweight components in car bodies through sheet thickness reduction. The steel typically used for hot stamping is a boron-manganese 22MnB5 steel reaching up to 1,900 MPa in strength. New boron-manganese alloys achieving higher strength are expected to be developed, generating challenges for the manufacturing process by means of formability. Thus, a further reduction of steel thickness resulting in lighter components is not expected. Hybrid lightweight design approaches aim at weight reduction by reducing steel thickness and applying fiber-reinforced plastics (FRP) to regain structural stiffness and strength. The use of residual heat remaining from the hot stamping process allows to activate adhesives to bond FRP to hot stamped steel. The performances of adhesive bonds depend strongly on surface characteristics. To avoid scaling and decarburization during the heating process several coatings for hot stamped steels are used forming intermetallic layers through heat treatment. The most common coating in today’s automotive application is an Al-Si coating. Thus, the overall performance of the adhesive bonded hot stamped metal polymer hybrid is not only depending on adhesives performance but also strongly on the hot stamped steel’s coating performance. In this paper, the characteristics of hot stamped steel 22MnB5 Al-Si coating are investigated with regard to adhesion performance. Therefore, hot stamped specimens are manufactured under realistic industrial conditions investigating the influence of furnace temperature and dwell time on the overall coating and intermetallic layers of Al-Si coating. The specimens are investigated with respect to Al-Si coating thickness, lap shear strength of hybrid specimen and tensile strength of hot stamped steel demonstrating the dependency of the overall hybrid specimen performance from the coating performance.

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Herstellung und Charakterisierung hochfester Kunststoff-Metall-Hybride

Cited by 3 publications

References 0 publications

Development of micro‐form‐fitted amorphous thermoplast/light metal hybrid components

Development of micro‐form‐fitted amorphous thermoplast/light metal hybrid components

In-Mold-Assembly of Hybrid Bending Structures by Compression Molding

Influencing Intermetallic Layers of Hot Stamped Steel for Adhesively Bonded Plastic Metal Hybrids

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