A review on properties of abrasive grits and grit selection

Abstract

Abstract:Although abrasive machining is among the oldest manufacturing principles, it is still essential for today's industry. Abrasive tool quality is significantly affected by the quality of the contained abrasive grits. This paper gives an overview on the most important grit properties for grinding tools with regard to tool performance and manufacture. These properties include grit size, shape, and toughness. Relevant techniques for grit sorting and analysis (sieving, sedimentation, shape sorting, friability testing, etc.) are presented and compared with regard to the controlled grit properties. Grit quality remains an important criterion for tool performance. More transparency in grit sorting techniques and quality indicators for abrasive grits can help many stakeholders: grit producers, tool manufacturers, and tool users. Moreover, recycling of used grinding tools might become a future market.

Evaluation and systematic selection of significant multi-scale surface roughness parameters (SRPs) as process monitoring index

“…(Kiyak and Çakır, 2007) found that different abrasive grain sizes (given as mesh numbers) and grain size distributions change surface roughness and affect functionality. (Linke, 2015) has discussed the importance of proper selection and implementation of abrasive tools for machining. has shown how the abrasive grit numbers and process parameters are used to achieve the desired surface quality and can be used for process optimization.…”

Quantitative impacts of regenerative vibration and abrasive wheel eccentricity on surface grinding dynamic performance

“…Here n is active grit numbers with specific instantaneous undeformed chip thickness in the interaction zone. (13) 3. Quantitative assessment of grinding system stability…”

“…The chip formation mechanism is inferred from a large amount of experimental and simulation data analyses. Because of stochastic nature of wheel topography, the grit distribution and material characteristics under specific test conditions cannot be controlled and monitored easily, the dynamic grinding performance and its control mechanism are typically judged qualitatively [11,12,13].…”

“…So far, geometries of abrasive grits are always assumed to be either pyramid cones with designated angles or simple sphere or ellipsoid [4,9,13]. While they are not same as aforementioned ideal standard geometries in actual grinding process, effective grits penetrating-in material can be measured with the development of test technology and be dimensioned accurately as geometries of pyramid or truncated tetrahedron with defined angle in different interaction interfaces between abrasive grits and workpiece, including depicted top opening angle, apex angle in feed direction, negative rake angle, wedge angle etc [17,18,19].…”

Preparação e caracterização de compósitos abrasivos resinoides reforçados com alumina reciclada

“…Os compósitos abrasivos sofreram ensaio de flexão em virtude de os rebolos e discos de corte, em serviço, também sofrerem esforços flexionais, precisando, pois, avaliar a capacidade deles de suportá-los (KLOCKE, 2009 2015;BRUCKSCHEN et al, 2005).…”