Study on removal mechanism and removal characters for SiC and fused silica by fixed abrasive diamond pellets

Author(s):  
Zhichao Dong ◽  
Haobo Cheng
2007 ◽  
Vol 359-360 ◽  
pp. 450-454 ◽  
Author(s):  
Yu Fei Gao ◽  
Pei Qi Ge ◽  
Zhi Jian Hou

The physical model of fixed-abrasive diamond wire-sawing monocrystalline silicon was founded to analyze the elastic deformation of the wire, supposing that every grit was connected to the surface of the wire by a spring. Ignoring lateral vibration of the wire, the geometrical model of wire-sawing was founded; the average cut depth of single grit was calculated theoretically. Based the indentation fracture mechanics and investigations on brittle-ductile transition of machining monocrystalline silicon, the removal mechanism and surface formation was studied theoretically. It shows that in the case of wire-sawing velocity of 10m/s or higher, infeed velocity of 0.20mm/s and diamond grain size of 64μm or smaller, the chip formation and material removal is in a brittle regime mainly, but the silicon wafer surface formation is sawed in a ductile regime. The size of the abrasives, the wire-saw velocity and infeed velocity can influence the sawing process obviously.


2014 ◽  
Vol 53 (26) ◽  
pp. 5841 ◽  
Author(s):  
Zhichao Dong ◽  
Haobo Cheng ◽  
Xu Ye ◽  
Hon-Yuen Tam

2020 ◽  
Vol 46 (16) ◽  
pp. 24961-24974
Author(s):  
Piao Zhou ◽  
Jun Li ◽  
Zikun Wang ◽  
Jiapeng Chen ◽  
Xue Li ◽  
...  

Author(s):  
Yaguo Li ◽  
Yongbo Wu ◽  
Libo Zhou ◽  
Masakazu Fujimoto ◽  
Jian Wang ◽  
...  

2012 ◽  
Vol 523-524 ◽  
pp. 155-160 ◽  
Author(s):  
Ya Guo Li ◽  
Yong Bo Wu ◽  
Li Bo Zhou ◽  
Hui Ru Guo ◽  
Jian Guo Cao ◽  
...  

Ultrasonic vibration assisted processing is well known for the improvement in machined surface quality and processing efficiency due to the reduced forces and tribology-generated heating when grinding hard-brittle materials. We transplanted this philosophy to chemo-mechanical fixed abrasive polishing of optical glass, namely fused silica, in an attempt to improve surface roughness and/or material removal rate. Experiments were conducted to elucidate the fundamental characteristics of chemo-mechanical fixed abrasive polishing of fused silica in the presence and absence of ultrasonic vibration on a setup with an in-house built gadget. The experimental results show that ultrasonic vibration assisted chemo-mechanical fixed abrasive polishing can yield increased material removal rate while maintaining the surface roughness of manufactured optics compared to conventional fixed abrasive polishing without ultrasonic vibration. The mechanism of material removal in fixed abrasive polishing was also delved. We found that the glass material is removed through the synergic effects of chemical and mechanical actions between abrasives and glass and the resultant grinding swarf contains ample Si element as well as Ce element, standing in stark contrast to the polisher that contains abundant Ce element and minor Si element.


2012 ◽  
Vol 13 (12) ◽  
pp. 2163-2172 ◽  
Author(s):  
Yaguo Li ◽  
Yongbo Wu ◽  
Libo Zhou ◽  
Masakazu Fujimoto ◽  
Jian Wang ◽  
...  

2016 ◽  
Vol 1136 ◽  
pp. 509-514
Author(s):  
Pei Lum Tso ◽  
Tsung Yun Tsai

Residual stresses in fused silica induced by two machining methods, diamond blade saw cutting and GC grinding wheel grinding, are studied in this study. Photoelastic method would be applied as measuring tool analyzing the gradient of residual stresses caused by different machining condition. This sentence is strange with analyzing the chips of grinding and observation of surface defects, it is assumed that the stresses gradient differs probably cause by the different material removal mechanism.


Author(s):  
Yaguo Li ◽  
Yongbo Wu ◽  
Libo Zhou ◽  
Masakazu Fujimoto
Keyword(s):  

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