Method for the automated design of cross-rolled preforms

authored by: Christopher Peter Roe, Mareile Kriwall, Malte Stonis, Bernd Arno Behrens
Abstract: A key factor influencing the economic efficiency of a forging process is time. To be competitive, organisational, administrative aspects, and decisions on content design must be clarified in the shortest possible time. The development of a forging process includes the creation of a so-called forging sequence plan, in which an initial body (semi-finished product) is successively brought into a target shape. As a rule, the stages are designed iteratively by calculating backwards to the semi-finished product (cylinder, cuboid, etc.). Therefore, automation solutions offer great potential for significantly reducing the iterative effort. In a multi-stage forging sequence plan, the first stage after the semi-finished product is called the preform. The preform has a significant influence on the amount of flash, number of stages and various forming parameters (e. g. forming load). Suitably designed preforms can therefore lead to a reduction in the number of stages. Rolling processes, for example, are suitable for creating preforms. The method presented here shows how mass-optimized preforms can be designed automatically for cross-wedge and non-circular rolling processes. This approach offers the advantage that forming processes do not have to be designed exclusively by backward iteration. Parameters or machine limits then can be used to calculate the following intermediate forms, thereby reducing the number of iterations needed.
Organisation(s): Institute of Metal Forming and Metal Forming Machines
External Organisation(s): Institut für integrierte Produktion Hannover (IPH)
Type: Article
Journal: Production Engineering
Volume: 19
Pages: 243–253
ISSN: 0944-6524
Publication date: 04.2025
Publication status: Published
Peer reviewed: Yes
Electronic version(s): https://doi.org/10.1007/s11740-024-01305-y (Access: Closed)
: Details in the research portal "Research@Leibniz University"

BibTeX

@article{643f2a3759704f8c9d6354029f74fed2,
title = "Method for the automated design of cross-rolled preforms",
abstract = "A key factor influencing the economic efficiency of a forging process is time. To be competitive, organisational, administrative aspects, and decisions on content design must be clarified in the shortest possible time. The development of a forging process includes the creation of a so-called forging sequence plan, in which an initial body (semi-finished product) is successively brought into a target shape. As a rule, the stages are designed iteratively by calculating backwards to the semi-finished product (cylinder, cuboid, etc.). Therefore, automation solutions offer great potential for significantly reducing the iterative effort. In a multi-stage forging sequence plan, the first stage after the semi-finished product is called the preform. The preform has a significant influence on the amount of flash, number of stages and various forming parameters (e. g. forming load). Suitably designed preforms can therefore lead to a reduction in the number of stages. Rolling processes, for example, are suitable for creating preforms. The method presented here shows how mass-optimized preforms can be designed automatically for cross-wedge and non-circular rolling processes. This approach offers the advantage that forming processes do not have to be designed exclusively by backward iteration. Parameters or machine limits then can be used to calculate the following intermediate forms, thereby reducing the number of iterations needed.",
keywords = "Automation, Forging, Preforms, Rolling",
author = "Roe, {Christopher Peter} and Mareile Kriwall and Malte Stonis and Behrens, {Bernd Arno}",
note = "Publisher Copyright: {\textcopyright} The Author(s) under exclusive licence to German Academic Society for Production Engineering (WGP) 2024.",
year = "2025",
month = apr,
doi = "10.1007/s11740-024-01305-y",
language = "English",
volume = "19",
pages = "243–253",
journal = "Production Engineering",
issn = "0944-6524",
publisher = "Springer Verlag",
}