CVD Diamond Coated Cemented Carbide Inserts

M. Huang Dr Huang is at the Central Iron & Steel Research Institute, No.76, Xueyuan Nanlu, Haidian District, Beijing100081, China and Drs Wang ([email protected]), Zhang and Lu are in the S1-B2C-20, Clean Room and Characterisation Lab, Microelectronics Centre, School of Electrical and Electronic Engineering, Nanyang Technological University, Nanyang Avenue, Singapore 639798, Singapore.

S. G. Wang Dr Huang is at the Central Iron & Steel Research Institute, No.76, Xueyuan Nanlu, Haidian District, Beijing100081, China and Drs Wang ([email protected]), Zhang and Lu are in the S1-B2C-20, Clean Room and Characterisation Lab, Microelectronics Centre, School of Electrical and Electronic Engineering, Nanyang Technological University, Nanyang Avenue, Singapore 639798, Singapore.

Q. Zhang Dr Huang is at the Central Iron & Steel Research Institute, No.76, Xueyuan Nanlu, Haidian District, Beijing100081, China and Drs Wang ([email protected]), Zhang and Lu are in the S1-B2C-20, Clean Room and Characterisation Lab, Microelectronics Centre, School of Electrical and Electronic Engineering, Nanyang Technological University, Nanyang Avenue, Singapore 639798, Singapore.

F. X. Lu Dr Huang is at the Central Iron & Steel Research Institute, No.76, Xueyuan Nanlu, Haidian District, Beijing100081, China and Drs Wang ([email protected]), Zhang and Lu are in the S1-B2C-20, Clean Room and Characterisation Lab, Microelectronics Centre, School of Electrical and Electronic Engineering, Nanyang Technological University, Nanyang Avenue, Singapore 639798, Singapore.

Abstract

The cutting performance of CVD diamond coated cemented carbide (WC-6%Co) inserts pretreated by etching was studied and compared with those of uncoated cemented carbide inserts. Diamond coated inserts pretreated with acid etching and Murakami solution etching yielded a cutting lifetime of 136 and 180 min , respectively, for cutting an aluminium alloy of Al-12%Si with a cutting speed v of 201 m/min, a feed rate f of 24 mm/min and a cutting depth ap of 0·5 mm. Uncoated inserts yielded a lifetime of only 15 min. This demonstrates that the application of CVD diamond coating to WC - 6%Co inserts can greatly improve their cutting performance and increase their cutting lifetime.

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CVD Diamond Coated Cemented Carbide Inserts

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CVD Diamond Coated Cemented Carbide Inserts

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