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Grinding Characteristics of Porous Composite-Bonded CBN Wheels

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Abstract:

Based on the orderly distribution alumina bubbles in working layer the porous composite-bonded CBN wheels were fabricated and grinding experiments of nickel-based alloy were carried out in comparison of the vitrified counterpart. Results show that the grinding force decreases and increases respectively with the increasing wheel velocity and depth of cut. The specific grinding energy reduces graduately from 465 to 93 J/mm3 when the maximun underformed chip thickness increases from 0.4 to 1.7 μm. Compared to the vitrified CBN wheel, the grinding forces, temperatures and specific grinding energy of the porous composite-bonded CBN wheel are always lower than that of the vitrified one. Its attributed to the graphite lubricating and alumina bubbles pore-forming effects. The larger chip storage space, sharper grit edge and less adhesion on the wheel surface surpport the advantages of the porous CBN wheel.

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Periodical:

Advanced Materials Research (Volume 797)

Pages:

516-521

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.797.516

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Online since:

September 2013

Authors:

Zhen Zhen Chen, Jiu Hua Xu, Wen Feng Ding, Chang Yu Ma

Keywords:

Alumina Bubbles, Grinding Force, Porous CBN Wheel, Specific Energy, Temperature

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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