Fundamental Investigations to Evaluate the Influence of Notching Processes on a Subsequent Cyclic Bending Process for the Production of Wire Cores

The production of wire cores by notch rolling and cyclic bending promises an ecologically and economically efficient manufacturing option for steel fibers. The paper at hand evaluates the influence of wire strips on cyclic bending by applying rolled wire strips of DP600 sheet metal (<i>t</i...

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Bibliographic Details
Main Authors: Alina Biallas, Sophia Ohmayer, Marion Merklein
Format: Article
Language:English
Published: MDPI AG 2023-01-01
Series:Journal of Manufacturing and Materials Processing
Subjects:
Online Access:https://www.mdpi.com/2504-4494/7/1/24
Description
Summary:The production of wire cores by notch rolling and cyclic bending promises an ecologically and economically efficient manufacturing option for steel fibers. The paper at hand evaluates the influence of wire strips on cyclic bending by applying rolled wire strips of DP600 sheet metal (<i>t</i><sub>0</sub> = 0.8 mm) and a new cyclic bending testing tool. Analysis of material separation with varying parameters, rolling gap <i>d</i> and bending angle <i>β</i>, proves the interdependency of both process step, but indicates reduced adjustability of the notch rolling process. To enable better adjustability of the wire strip’s characteristics and analysis of their effects, wire strip production in the laboratory by notch stamping instead of rolling is aspired. The prior interaction analysis states the web height <i>b</i>, the notch angle <i>α</i>, and the hardening distribution as relevant wire strip’s characteristics to be replicated. Based on experimental analysis, an equivalent of notch rolling by notch stamping is deduced by considering the web height <i>b</i> identical for stamping and rolling, by adjusting the tool’s notch angle <i>α<sub>t</sub></i> based on an equation considering geometric evaluations of <i>α</i>, and by taking advantage of the asymmetric hardening distribution of the outer notch which is comparable to rolled wire strip.
ISSN:2504-4494