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6CCVD Research

Influence of the Heat Dissipation Mode of Long-Flute Cutting Tools on Temperature Distribution during HFCVD Diamond Films

At a Glance

Section titled ā€œAt a Glanceā€
MetadataDetails
Publication Date2019-07-30
JournalCrystals
AuthorsTao Zhang, Yizheng Qian, Shu Wang, Guodong Huang, Lijun Zhang
InstitutionsWuxi Institute of Technology, Shanghai Ocean University
Citations12

Abstract

Section titled ā€œAbstractā€

The distribution of substrate temperature plays a decisive role on the uniformity of polycrystalline diamond films on cemented carbide tools with a long flute, prepared by a hot filament chemical vapor deposition (HFCVD). In this work, the heat dissipation mode at the bottom of tools is a focal point, and the finite volume method (FVM) is conducted to simulate and predict the temperature field of tools, with the various materials of the holder placed under the tools. The simulation results show that the thermal conductivity of the holder affects the temperature difference of the individual tools greatly, but only affects the temperature of different tools at the same XY plane slightly. Moreover, the ceramic holder can reduce the difference in temperature of an individual tool by 54%, compared to a copper one. Afterwards, the experiments of the deposition of diamond films is performed using the preferred ceramic holder. The diamond coatings on the different positions present a highly uniform distribution on their grain size, thickness, and quality.

Tech Support

Section titled ā€œTech Supportā€

Original Source

Section titled ā€œOriginal Sourceā€

References

Section titled ā€œReferencesā€
  1. 2000 - Chemical vapour deposition diamond coated microtools for grinding, milling and drilling [Crossref]
  2. 2001 - CVD diamond films: From growth to applications [Crossref]
  3. 2006 - Dry machining of aluminum-silicon alloy using polished CVD diamond-coated cutting tools inserts [Crossref]
  4. 2005 - CVD diamond tool performance in metal matrix composite machining [Crossref]
  5. 2008 - Micro-and nano-crystalline CVD diamond coated tools in the turning of EDM graphite [Crossref]
  6. 2000 - Heat transfer simulation of HFCVD and fundamentals of diamond vapor growth reactor designing [Crossref]
  7. 2009 - Grobicki, A. Compact and Efficient HFCVD for Electronic Grade Diamond and Related Materials
  8. 2018 - Simulation and experimental researches on HFCVD diamond film growth on small inner-hole surface of wire-drawing die with no filament through the hole [Crossref]
  9. 2003 - Improvement of adhesive strength and surface roughness of diamond films on Co-cemented tungsten carbide tools [Crossref]
  10. 2001 - Simulations of temperature field in HFCVD diamond films with large area

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