Effects of grinding parameters on surface quality in silicon nitride grinding

The experimental results for silicon carbide (SiC) wheel with fine grit size grinding of silicon carbide (Si3N4) revealed that the grinding parameters affect not only the ground silicon nitride surface roughness, but also the degree of surface damage. There exists complex non-linear relationship between the grinding parameters and surface quality. Better surface roughness doesn’t surely mean less surface damage. A method of prediction of grinding quality based on support vector regression is then presented according to the condition of small samples. The result shows the prediction accuracy based on this method is obviously higher than neural network, which provides an effective way for optimizing the grinding parameters to ensure the grinding quality as well as grinding efficiency while grinding of silicon carbide using conventional abrasive.

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Effect of grinding parameters on surface quality in internal grinding of silicon nitride ceramics

Journal of the Brazilian Society of Mechanical Sciences and Engineering ◽

10.1007/s40430-021-03076-4 ◽

2021 ◽

Vol 43 (7) ◽

Author(s):

Haipeng Yan ◽

Fei Deng ◽

Huli Niu ◽

Jinda Zhu ◽

Beibei Hu

Keyword(s):

Silicon Nitride ◽

Surface Quality ◽

Internal Grinding ◽

Grinding Parameters ◽

Nitride Ceramics

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Study on Effect of Ultrasonic Vibration on Grinding Force and Surface Quality in Ultrasonic Assisted Micro End Grinding of Silica Glass

Shock and Vibration ◽

10.1155/2014/418059 ◽

2014 ◽

Vol 2014 ◽

pp. 1-10 ◽

Cited By ~ 8

Author(s):

Zhang Jianhua ◽

Zhao Yan ◽

Zhang Shuo ◽

Tian Fuqiang ◽

Guo Lanshen ◽

...

Keyword(s):

Surface Quality ◽

Ultrasonic Vibration ◽

Silica Glass ◽

Removal Rate ◽

Surface Characteristics ◽

Diamond Wheel ◽

Grinding Force ◽

Grinding Forces ◽

Grinding Parameters ◽

Ductile Machining

Ultrasonic vibration assisted micro end grinding (UAMEG) is a promising processing method for micro parts made of hard and brittle materials. First, the influence of ultrasonic assistance on the mechanism of this processing technology is theoretically analyzed. Then, in order to reveal the effects of ultrasonic vibration and grinding parameters on grinding forces and surface quality, contrast grinding tests of silica glass with and without ultrasonic assistance using micro radial electroplated diamond wheel are conducted. The grinding forces are measured using a three-component dynamometer. The surface characteristics are detected using the scanning electron microscope. The experiment results demonstrate that grinding forces are significantly reduced by introducing ultrasonic vibration into conventional micro end grinding (CMEG) of silica glass; ultrasonic assistance causes inhibiting effect on variation percentages of tangential grinding force with grinding parameters; ductile machining is easier to be achieved and surface quality is obviously improved due to ultrasonic assistance in UAMEG. Therefore, larger grinding depth and feed rate adopted in UAMEG can lead to the improvement of removal rate and machining efficiency compared with CMEG.

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