Radiational Thermometry of Diamond Tool Tip Temperature in Micro Cutting

The use of hard and brittle materials for manufacturing optical parts, such as dies and molds are required in order to extend mold life. Although, cobalt-free tungsten carbide is one of the hardest materials, micro-cutting is very difficult due to its hardness and its brittleness. This paper investigates face turning of cobalt-free tungsten carbide using a nanopolycrystalline diamond [NPD] tool and Zinc dialkyldithiophosphate (ZnDTP) fluid. Surface roughness of the cobalt-free tungsten carbide achieved was 22nmRz, which is far larger than the theoretical value. That is, traditional cutting theory does not directly apply for face turning of cobalt-free tungsten carbide using NPD tool and ZnDTP fluid.

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3313 Study on Micro Cutting of Tungsten Carbide by Diamond Tool

Proceedings of International Conference on Leading Edge Manufacturing in 21st century LEM21 ◽

10.1299/jsmelem.2011.6._3313-1_ ◽

2011 ◽

Vol 2011.6 (0) ◽

pp. _3313-1_-_3313-4_ ◽

Cited By ~ 1

Author(s):

Hiroo Shizuka ◽

Koichi Okuda ◽

Masayuki Nunobiki ◽

Yoshihiro Yokoyama

Keyword(s):

Tungsten Carbide ◽

Diamond Tool ◽

Micro Cutting

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Micro cutting of ferrous materials using diamond tool under ionized coolant with carbon particles

CIRP Annals ◽

10.1016/j.cirp.2011.03.089 ◽

2011 ◽

Vol 60 (1) ◽

pp. 97-100 ◽

Cited By ~ 17

Author(s):

A. Inada ◽

S. Min ◽

H. Ohmori

Keyword(s):

Diamond Tool ◽

Micro Cutting ◽

Carbon Particles

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The use of high-resolution methods of research in the design of the diamond-matrix interface to increase the durability of the diamond tool

Industrial laboratory Diagnostics of materials ◽

10.26896/1028-6861-2020-86-6-62-71 ◽

2020 ◽

Vol 86 (6) ◽

pp. 62-71

Author(s):

P. P. Sharin ◽

S. P. Yakovleva ◽

M. P. Akimova ◽

V. I. Popov

Keyword(s):

High Resolution ◽

Diamond Tool ◽

Diamond Surface ◽

Matrix Interface ◽

Reaction Products ◽

Diamond Tools ◽

Functional Composites ◽

Mechanical Adhesion ◽

Carbide Matrix ◽

Diamond Retention

The results of studying fundamental and applied problems regarding the formation of boundary layers between diamond and carbide matrix are presented with the goal to develop a highly resistant diamond tool. The new approaches to the synthesis of diamond-carbide materials combining diamond metallization and sintering in a single-stage technology are presented. The developed technology eliminates the re-heating of a metallized coatings which results in their destruction and enhanced graphitization of diamond (these phenomena restrict using metallization procedure to improve diamond retention and synthesis of high-functional composites for diamond tools). The goal of the study is analysis the structural and phase state of the «diamond – carbide matrix» interface in a diamond tool obtained by the new technology and the main factors determining the level of diamond retention in the presence of a metallized coating. Unique opportunities provided by modern high-resolution methods of research were used in the study. The elemental composition and morphological features of the diamond-matrix interface were studied using the methods of scanning electron microscopy, atomic force microscopy, X-ray microanalysis and Raman spectroscopy. Identification of the reaction products, including non-diamond carbon was performed. It is shown that the introduction of the powder-metallizer significantly modified the contact boundaries and provide conditions for improving the chemical and mechanical adhesion of the diamond-matrix system. The formation of the well-developed nano- and sub-microscale roughness of the diamond surface and dense filling of the existing voids with nanoscale layers of metal-infiltrate was revealed. The multilevel organization of highly structured elements of the transition zone with the minimal graphitization ensured the monolithic character and strength of the diamond-matrix bond. Comparative service tests of preproduction and control samples of diamond dressers proved the efficiency of developed hybrid technology (the specific performance of diamond tools increased by 39 – 45%). New fundamental and applied results have been obtained in the field of studying interface zones in crystalline multiphase systems that can be used to regulate adhesion phenomena at the interphase boundaries and develop highly efficient composite materials.

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