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Supporting Body Material for Ceramic Diamond Grinding Tools

100%

Staniewicz-Brudnik B. , Figiel P. , Skrabalak G. , Karolus M.

Journal of Applied Materials Engineering

2020

tom Vol. 60, iss. 2-3

47--52

The characteristics of abrasive tools (the type of grinding wheel, granulation of the super hard grain, type of structure, hardness, and the type of binder) contain information on the type of supporting body materials used (e.g., dural, ceramic, steel). In this work, diamond wheels were obtained on ceramic supporting bodies, containing a sintered mixture of white alumina 99A granulation F320, green silicon carbide 99A granulation F320, and binder Ba23 bis, together with modifiers. The mechanical properties (hardness, bending strength) of ceramic supporting bodies were tested. The structure of the phase boundary of the ceramic supporting body–abrasive grinding tool was analyzed on a BEC (backscattered electron composition) image by using SEM (Scanning Electron Microscopy). It was found that the hardness of the supporting body was slightly lower (70–75 HRB) than the diamond wheels (76–81 HRB). The bending strength of the supporting bodies was high (85 2 MPa). The BEC image from the scanning microscope did not show a sharp transition between the ceramic supporting body and the grinding wheel. Preliminary operational tests showed significant improvement in grinding wheel efficiency in comparison to diamond tools with the same ceramic binder on a duralumin supporting body during machining of G30 sintered carbide bush.

Influence of conditions of grinding by diamond wheels on pyroceramics products defectiveness

58%

Kalafatova L.

Archiwum Technologii Maszyn i Automatyzacji

2004

tom Vol. 24, nr 2 sp

115-123

The influence of grinding conditions of engineering cetalls-made products on the formed surface defects presence are examined in the paper. The level of the defects presence is stated to depends on the cutting forces and is defined by such technological process input parameters as grinding mode, diamond tool state and characteristics, the performed operations order and technological environment features.

W artykule omówiono wpływ warunków szlifowania wyrobów ze szklanej ceramiki technicznej na wady kształtowanej powierzchni. Stwierdzono, że stopień wadliwości zależy od sił skrawania podczas obróbki i że charakteryzują go takie parametry wejściowe procesu technologicznego, jak parametry szlifowania, charakterystyka i stan narzędzia diamentowego, kolejność operacji, właściwości środowiska technologicznego.