Microscopic examination of the fracture surfaces of a cold working die due to premature failure

Statharas, D.; Sideris, J.; Medrea, C.; Chicinaş, Ionel

doi:10.1016/j.engfailanal.2010.12.007

Cited by 14 publications

(4 citation statements)

References 9 publications

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“…It was estimated that the overall average number of goods produced was only 1,126,707 units per tool, underling a dramatic reduction in tool performance (62% for D2 tools and 77.5% for PM tools). Paper is a soft material, difficult to cut because it gets trapped easily and blocks the cutting system [28]. Continuous operation of a paper-cutting machine is only ensured when tolerance of the distance between the paper and the cutting parts is kept small and stable.…”

Section: Resultsmentioning

confidence: 99%

Failure analysis of two cold-working cutting tools. Case studies

et al. 2018

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The study examines the dramatic drop in the efficiency of a cutting tool. The specific tool is part of machine used for cutting envelopes of paper for medical products packaging. Two similar pieces, selected after breaking down in service, were examined in depth. Historical data was collected. The tool temperature range during operation and the material hardness were measured. The fracture surfaces as well as the surrounding areas were carefully inspected. Chemical analysis was performed in order to identify the tool and coating materials. Results showed that components were made of different steels: D2 and Vanadis 6. The coating material also differs. Samples were selected and prepared for optical and electron microscopy. The condition of the cutting edges and the heat-treated microstructure were considered. Thickness, quality and homogeneity of the coatings were also inspected. Both tools failed by fatigue mode under different conditions. The fracture mechanism and its principal causes are discussed. The reasons of failure for both cutting tools are examined and compared. Poor designs associated with improper handling have led to the components breakage. Appropriate recommendations are given in order to eliminate similar situations and to improve the cutting performance.

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Section: Resultsmentioning

confidence: 99%

Failure analysis of two cold-working cutting tools. Case studies

et al. 2018

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“…In this context, poor die performance is studied with interest, in order to provide recommendations regarding failure prevention [19,23,24,25] and repairing options [26,27].…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Failure analysis of an EDM machined mold-printing die used for the production of truck spare parts

Leptidis

Medrea

Chicinaş

2016

Engineering Failure Analysis

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“…Development of foreign cold working die steel. In recent years, some high performance and long life cold working die steels have been produced in foreign steel factories in order to satisfy the need for die industry and consolidate its position in international market [5][6][7].…”

Section: Development Of Cold Working Die Steelmentioning

confidence: 99%