A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
SHAPED ABRASIVE PARTICLES WITH LOW ROUNDNESS FACTOR
Shaped abrasive particles (20) comprising alpha alumina; and a first face (24) and a second face (26) connected to each other by sidewalls (22), the first face (24) and the second face (26) being separated by a thickness (t); wherein the shaped abrasive particles have a cross-sectional shape along a longitudinal axis (50) of the shaped abrasive particles (20), the cross-sectional shape comprising a rectangular cross-sectional shape in a cut transverse at 90 degrees to the longitudinal axis (50) at a location between a first transverse line (56) drawn at 1/4 of an overall length of the shaped abrasive particles (20) along the longitudinal axis (50) and a second transverse line (58) drawn at 3/4 of the overall length of the shaped abrasive particles (20); wherein the shaped abrasive particles comprise an Average Roundness Factor of between about 15% to 0%, the Average Roundness Factor being determined by measuring a Roundness Factor of 10 individual shaped abrasive particles and averaging the 10 individual results, the Roundness factor being calculated as RoundnessFactor%=MissingArea68ActualArea66×100 wherein the Actual Area (66) is the actual area of the cross-sectional plane; wherein the Missing Area (68) is determined by bounding each of the sidewalls (22), the first face (24), and the second face (26) of the cross-sectional plane by a line (62) drawn tangent to the two highest points located anywhere along the respective sidewalls (22), first face (24), and second face (26), thereby enclosing a Maximum Area (64) having a polygonal shape, and subtracting the Actual Area (66) from said Maximum Area (64).
SHAPED ABRASIVE PARTICLES WITH LOW ROUNDNESS FACTOR
Shaped abrasive particles (20) comprising alpha alumina; and a first face (24) and a second face (26) connected to each other by sidewalls (22), the first face (24) and the second face (26) being separated by a thickness (t); wherein the shaped abrasive particles have a cross-sectional shape along a longitudinal axis (50) of the shaped abrasive particles (20), the cross-sectional shape comprising a rectangular cross-sectional shape in a cut transverse at 90 degrees to the longitudinal axis (50) at a location between a first transverse line (56) drawn at 1/4 of an overall length of the shaped abrasive particles (20) along the longitudinal axis (50) and a second transverse line (58) drawn at 3/4 of the overall length of the shaped abrasive particles (20); wherein the shaped abrasive particles comprise an Average Roundness Factor of between about 15% to 0%, the Average Roundness Factor being determined by measuring a Roundness Factor of 10 individual shaped abrasive particles and averaging the 10 individual results, the Roundness factor being calculated as RoundnessFactor%=MissingArea68ActualArea66×100 wherein the Actual Area (66) is the actual area of the cross-sectional plane; wherein the Missing Area (68) is determined by bounding each of the sidewalls (22), the first face (24), and the second face (26) of the cross-sectional plane by a line (62) drawn tangent to the two highest points located anywhere along the respective sidewalls (22), first face (24), and second face (26), thereby enclosing a Maximum Area (64) having a polygonal shape, and subtracting the Actual Area (66) from said Maximum Area (64).
SHAPED ABRASIVE PARTICLES WITH LOW ROUNDNESS FACTOR
GEFORMTE SCHLEIFPARTIKEL MIT GERINGEM RUNDUNGSFAKTOR
PARTICULES ABRASIVES FAÇONNÉES À FAIBLE FACTEUR D'ARRONDI
ERICKSON DWIGHT D (author)
2021-07-21
Patent
Electronic Resource
English
IPC:
C09K
Materialien für Anwendungen, soweit nicht anderweitig vorgesehen
,
MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR
/
B24D
TOOLS FOR GRINDING, BUFFING OR SHARPENING
,
Werkzeuge zum Schleifen, Polieren oder Schärfen
/
C01F
COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
,
Verbindungen der Metalle Beryllium, Magnesium, Aluminium, Calcium, Strontium, Barium, Radium, Thorium oder der Seltenen Erden
/
C04B
Kalk
,
LIME
/
C08J
Verarbeitung
,
WORKING-UP