Influence of graphite addition on bonding properties of abrasive layer of metal-bonded CBN wheel

In order to improve the performance of metal-bonded grinding wheels, the graphite particles with several different contents (i.e., 5, 10, 15, and 20 wt%) were added to Cu-Sn-Ti alloy powders as the bonding materials. The influence of graphite addition on bonding properties of the abrasive layer was...

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Bibliographic Details
Published in:International journal of advanced manufacturing technology 2017-11, Vol.93 (5-8), p.2675-2684
Main Authors: Miao, Qing, Ding, Wenfeng, Fu, Dengkui, Chen, Zhenzhen, Fu, Yucan
Format: Article
Language:English
Subjects:
Abrasive wheels
Alloy powders
Bend strength
Bonding strength
CAE) and Design
Computer-Aided Engineering (CAD
Copper
Copper base alloys
Engineering
Finite element method
Graphite
Grinding wheels
Industrial and Production Engineering
Intergranular fracture
Mechanical Engineering
Media Management
Original Article
Performance enhancement
Porosity
Thermal stress
Tin
Titanium
Transgranular fracture
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Summary:In order to improve the performance of metal-bonded grinding wheels, the graphite particles with several different contents (i.e., 5, 10, 15, and 20 wt%) were added to Cu-Sn-Ti alloy powders as the bonding materials. The influence of graphite addition on bonding properties of the abrasive layer was investigated. Firstly, microstructural examination results show that the joining between graphite and Cu-Sn-Ti alloy was achieved and provided a weak bonding strength compared to the pure Cu-Sn-Ti matrix. Secondly, the transgranular fracture and intergranular fracture were determined as the main fracture patterns of abrasive layer in the current investigation. Then, an optimized graphite content of 10 wt% was decided, at which the porosity of abrasive layer can reach 25% as well as the bending strength reached 125 MPa and was favorable to meet the high-speed grinding requirements. Finally, the finite element simulation results suggested that the graphite addition had little effect on the residual thermal stresses of abrasive layer.
ISSN:0268-3768
1433-3015
DOI:10.1007/s00170-017-0714-2