Home Kovove Materialy-Metallic Materials 2011 Metallic Materials Vol. 49 (2011), no. 6, pp.457-461

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Metallic Materials Vol. 49 (2011), no. 6, pp.457-461

Title: Quality of chrome layers of coining dies and its impact on their reliability and lifetime in operation
Author: D. KALINCOVA, O. BARBORAK, I. ANDREJCAK
Abstract: Traditional methods of relief coating - chroming - have been used to increase the coining die lifetime for many years. This article is aimed at the quality evaluation of Cr layer on the coining dies surfaces. Three specimens – coining dies – were dipped in the electrolyte at different intervals of time. The quality and thickness of the Cr layer were examined and evaluated. The results were then compared with results of the reference coining die, which achieved the optimum of lifetime (represented in number of coins per minute).
Keywords: coining dies, Cr layer, technological process of coating, coating time, quality and reliability, lifetime
Year: 2011, Volume: 49, Issue: 6 Page From: 457, Page To: 461
doi:10.4149/km_2011_6_457
Price: 2.50 €





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