State of Art on Development of Diamond Reinforced Tungsten Carbide based Cutting Tool by Powder Metallurgy Routes

1

ABSTRACT

Removing material from any workpiece is done using either a single point or multi-point cutting tool in the machining process for achieving the desired shape. The 15–20% of total energy is consumed to avoid the sliding friction at the flank and rake faces of the tool. Owing to overcome frictional/wear problems, two categories, namely cutting fluids and tool improvements, are generally employed in the machining process. Cutting fluid creates some issues such as thermal cracking by reusing the same fluid and environmental pollution whenever dumping. In contrast, material selection before manufacturing a cutting tool is the best solution for tool improvement. In order that this review work shows the fabrication of diamond reinforced tungsten carbide-based cutting tool by different powder metallurgy techniques such as the high pressure- high-temperature technique, spark plasma sintering and pulse plasma sintering techniques. In addition, the adverse effects of graphitisation that occurred in these techniques are discussed in detail. Finally, this work concludes with a challenging task, such as strengthening the chemical bond between the diamond and tungsten carbide in low-pressure techniques like spark plasma sintering and pulse plasma sintering.

KEYWORDS:

• Hardness
• fracture toughness
• graphitisation
• coating
• chemical bond

Nomenclature

Table

Acknowledgments

The authors are greatly thankful to “ELSEVIER (Licence numbers: 4700710325786, 4700710118875, 4700710631881, 4700710870285)” for providing the copy right permission to different figures in this review paper.

Disclosure statement

No potential conflict of interest was reported by the authors.