Internal Flow-Turning – a new approach for the manufacture of tailored tubes with a constant external diameter

Wiens, Eugen; Homberg, Werner

doi:10.1016/j.proeng.2017.10.934

Cited by 7 publications

(2 citation statements)

References 8 publications

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“…The use of tailored tubes will be investigated to overcome this limitation. For example, the internal flow-forming process developed at LUF can be used to manufacture these tailored tubes [18]. With this process, the wall thickness can be partially reduced to a specified minimum by flow-forming on the inner side of the tube, leaving the necessary wall thickness in the forming zone.…”

Section: Fig 7 Temperature Profiles Of the Manufacture Of The Spheric...mentioning

confidence: 99%

Energy and resource-efficient forming of gas cylinders by friction-spinning

Dahms

2023

Materials Research Proceedings

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Abstract. Friction-spinning as an innovative incremental forming process enables large degrees of deformation in tube and sheet metal-forming due to a self-induced heat generation in the forming zone. This paper presents new process designs for energy and resource-efficient forming of gas cylinders by friction-spinning without the use of an external heat supply. The self-generated heat enables friction-spinning process to reduce the energy demand in the manufacture of gas cylinders, which are usually manufactured with external heat (mostly fossil fuels), by 95 %. Typical gas cylinder contours, such as flattened and spherical bottom ends and cylinder necks, are manufactured by friction-spinning of AW 6060 tubular profiles with specifically designed tool path strategies. It is shown that friction-spinning enables the manufacture of typical gas cylinder contours with sufficient wall thickness and the required gas tightness without the input of external heat. Thus, this process can contribute to an increase in the energy and resource efficiency of forming processes.

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Section: Fig 7 Temperature Profiles Of the Manufacture Of The Spheric...mentioning

confidence: 99%

Energy and resource-efficient forming of gas cylinders by friction-spinning

Dahms

2023

Materials Research Proceedings

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“…The process has a high potential to reduce material waste, to extend the forming limits and to achieve more complex geometries as well as favorable part properties [1]. Current research work at the Chair of Forming Technology (LUF) is focused on innovative flow-turning processes that have a high potential for producing flat components with excellent geometrical and mechanical properties while keeping process times short [2]. In combination with process-integrated local heat treatment, the new spinning process is predestined for the efficient forming of ultra-high-strength steel or tailored materials.…”

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confidence: 99%

Hot Spinning of Cutting Blades for Food Industry

Engemann

Homberg

2022

KEM

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The spinning process is a flexible incremental forming process for the manufacturing of axially-symmetric sheet metal or tubular components with functionally graded properties. It is characterized by the utilization of universal tooling geometries and quite low forming forces. The process has a high potential to reduce material waste, to extend the forming limits and to achieve more complex geometries as well as favorable part properties [1]. Current research work at the Chair of Forming Technology (LUF) is focused on innovative flow-turning processes that have a high potential for producing flat components with excellent geometrical and mechanical properties while keeping process times short [2]. In combination with process-integrated local heat treatment, the new spinning process is predestined for the efficient forming of ultra-high-strength steel or tailored materials. Due to the desired field of food industry only food-safe materials such as special stainless steels are being investigated. This paper presents an innovative machine layout as well as an adequate process design for the production of high-performance circular knives with optimized mechanical hardness. In this context, particular attention is paid to various areas of temperature control as well as process-related challenges during the process.

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