Aktuelle Entwicklungstrends und zukünftige Herausforderungen im Bereich der Umformtechnik

Buchmayr, Bruno

doi:10.1007/s00501-015-0402-1

Cited by 2 publications

(1 citation statement)

References 15 publications

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“…The technical requirements for components are rising steadily while, at the same time, material shortages and rising costs, as well as CO 2 constraints, add to the difficulty of material selection [1]. A promising solution to many of these new challenges is the use of hybrid materials with locally adapted properties.…”

Section: Introductionmentioning

confidence: 99%

Contact Temperature Measurements on Hybrid Aluminum–Steel Workpieces in a Cross-Wedge Rolling Process

Merkel

Kruse

Kriwall

et al. 2023

JMMP

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The Collaborative Research Center 1153 is investigating a novel process chain for manufacturing high-performance hybrid components. The combination of aluminum and steel can reduce the weight of components and lead to lower fuel consumption. During the welding of aluminum and steel, a brittle intermetallic phase is formed that reduces the service life of the component. After welding, the workpiece is heated inhomogeneously and hot-formed in a cross-wedge rolling process. Since the intermetallic phase grows depending on the temperature during hot forming, temperature control is of great importance. In this paper, the possibility of process-integrated contact temperature measurement with thin-film sensors is investigated. For this purpose, the initial temperature distribution after induction heating of the workpiece is determined. Subsequently, cross-wedge rolling is carried out, and the data of the thin-film sensors are compared to the temperature measurements after heating. It is shown that thin-film sensors inserted into the tool are capable of measuring surface temperatures even at a contact time of 0.041 s. The new process monitoring of the temperature makes it possible to develop a better understanding of the process as well as to further optimize the temperature distribution. In the long term, knowledge of the temperatures in the different materials also makes it possible to derive quality characteristics as well as insights into the causes of possible process errors (e.g., fracture of the joining zone).

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Section: Introductionmentioning

confidence: 99%

Contact Temperature Measurements on Hybrid Aluminum–Steel Workpieces in a Cross-Wedge Rolling Process

Merkel

Kruse

Kriwall

et al. 2023

JMMP

View full text Add to dashboard Cite

show abstract

Feasibility study for the manufacturing of hybrid pinion shafts with the cross-wedge rolling process

et al. 2023

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The Collaborative Research Center 1153 is investigating an innovative process chain for the production of hybrid components. The hybrid workpieces are first joined and then formed by cross-wedge rolling. Pinion shafts were manufactured to investigate the behavior of the joining zone under increased complexity of the forming process. For this purpose, six types of workpieces produced by three types of joining processes were formed into pinion shafts. The reference process provides a shaft with a smooth bearing seat. It was found that the increased complexity did not present any challenges compared to the reference processes. A near-net shape geometry was achieved for the pinions made of steel.

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Aktuelle Entwicklungstrends und zukünftige Herausforderungen im Bereich der Umformtechnik

Cited by 2 publications

References 15 publications

Contact Temperature Measurements on Hybrid Aluminum–Steel Workpieces in a Cross-Wedge Rolling Process

Contact Temperature Measurements on Hybrid Aluminum–Steel Workpieces in a Cross-Wedge Rolling Process

Feasibility study for the manufacturing of hybrid pinion shafts with the cross-wedge rolling process

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