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Deposition and Application of CVD Diamond Film on the Interior-Hole Surface of Shaped-Wire Drawing Die

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Abstract:

Abstract：The shaped-wire drawing dies are used more and more popularly in the metal product industry for several advantages of locked structure. In present investigation, a layer of CVD diamond film is deposited on the interior-hole surface of shaped-wire drawing die using a hot filament chemical vapor deposition (HFCVD) method, followed by a surface polishing process, aiming at further prolonging its working lifetime of shaped-wire drawing dies and improving the surface quality of produced wires. The scanning electron microscopy (SEM), surface profiler and Raman spectroscopy are adopted to present the characterization of both as-deposited CVD diamond films before and after polishing. Furthermore, the performance of as-fabricated CVD diamond coated drawing dies is examined in the practical production process. The results show that as-deposited CVD diamond films are homogeneous and the working surface is smoother after polishing. Comparing with the conventional shaped drawing dies, the working lifetime of the diamond coated shaped-wire drawing dies can be increased by a factor of above 10, and the shaped wires with higher surface quality can be obtained.

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Periodical:

Applied Mechanics and Materials (Volumes 217-219)

Pages:

1022-1027

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.217-219.1022

Citation:

Cite this paper

Online since:

November 2012

Authors:

Liu Jin Bian, Zi Chao Lin, Fang Hong Sun, Song Shou Guo

Keywords:

Diamond Films, Drawing Dies, HFCVD, Processing Quality, Shaped Wire, Working Lifetime

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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