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Effects of Co ratio on fatigue life of WC-Co die inserts used in cold forming operations
HIZLI Burak, OZTURK Kubra, INCE Umut
download PDFAbstract. Production of fasteners via cold forming requires high forming forces, which induce significant stresses in dies. Therefore, die performance becomes a critical parameter of the fastener production process. Estimation of die life with high accuracy allows to enhance production efficiency and reduce die-related expenditures. Generally, WC-Co hardmetals consisting of 4-30% Co content as a binder are highly preferred in cold forming operations. WC-Co metal-ceramic composite materials offer high wear resistance against frictional forces, high compressive strength, and lower elastic deformation to resist excessive contact pressures, which are primary requirements for cold-forming dies. In this study, experimental investigations were conducted for the determination and comparison of fatigue performance at three different stress amplitudes, utilizing three-point bending fatigue testing with two different grades of WC-Co hardmetals. After the experiments, Goodman-Haigh diagrams were obtained from the experimental results to be utilized in predictive die-life calculations.
Keywords
WC-Co, Co Ratio, Fatigue Life, Cold Forming
Published online 4/24/2024, 10 pages
Copyright © 2024 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA
Citation: HIZLI Burak, OZTURK Kubra, INCE Umut, Effects of Co ratio on fatigue life of WC-Co die inserts used in cold forming operations, Materials Research Proceedings, Vol. 41, pp 881-890, 2024
DOI: https://doi.org/10.21741/9781644903131-96
The article was published as article 96 of the book Material Forming
Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
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