The Cutting Performance of Ultra-Smooth Composite Diamond Coated WC-Co Inserts in Dry Turning Al/SiC-MMC

Bin Shen; Fang Hong Sun

doi:10.4028/www.scientific.net/AMR.325.400

Paper Titles

Influences of Processing Parameters on Hole Shape Accuracy in Drilling Carbon Fiber Reinforced Composite
p.375

Tool Wear and Cutting Temperature at Machining of Composites
p.381

High Speed Milling of Titanium Alloy
p.387

The Influence of SiC Particles on Tool Wear in Machining of Al/SiC Metal Matrix Composites Produced by Powder Extrusion
p.393

The Cutting Performance of Ultra-Smooth Composite Diamond Coated WC-Co Inserts in Dry Turning Al/SiC-MMC
p.400

Milling Experimental Investigation on Titanium Alloy Ti6Al4V under Different Cooling/Lubrication Conditions
p.406

Machined Surface Analysis in High-Speed Dry Milling of Ti-6Al-4V Alloy with Coated Carbide Inserts
p.412

Prediction of Surface Roughness Using Back-Propagation Neural Network in End Milling Ti-6Al-4V Alloy
p.418

Lubricant Applying Effect Mechanism in Inconel 718 Cutting - Effects of Cutting Speed and Depth of Cut -
p.424

HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 325The Cutting Performance of Ultra-Smooth Composite...

The Cutting Performance of Ultra-Smooth Composite Diamond Coated WC-Co Inserts in Dry Turning Al/SiC-MMC

Abstract:

In present study, a novel deposition method combining conventional hot filament chemical vapor deposition (HFCVD) method and surface polishing is adopted to deposit the micro/nano-crystalline multilayered ultra-smooth diamond (USCD) film on the cobalt cemented tungsten carbide (WC-Co) cutting inserts. The scanning electron microscopy (SEM) image shows that the deposited USCD film exhibits an ultra-smooth surface, whose surface roughness (R_a) is measured as ~95.7 nm using surface profilometer. The characterization of Raman spectroscopy and X-ray diffraction (XRD) further confirms that the grain size of USCD film is down to the nanometer scale. Furthermore, dry turning tests using Al/SiC-MMC as workpiece are conducted to examine the cutting performance of as-fabricated USCD coated inserts, comparing with uncoated WC-Co inserts, MCD and DLC coated inserts. The results show that the USCD coated insert exhibits much longer lifetime than other inserts, whose effective cutting length is as long as 190 m, nearly two times more than that of DLC and MCD coated inserts, and 5 times more than that of uncoated WC-Co inserts. The excellent wear resistance and ultra-smooth surface of USCD films is supposed to play determinate role on elongating the lifetime of WC-Co cutting insert.