A structured abrasive article comprises a plurality of shaped abrasive composites disposed on and secured to a major surface of a backing. The shaped abrasive composites comprise magnetizable abrasive particles retained in an organic binder. On a respective basis, each of the magnetizable abrasive particles has a ceramic body with a magnetizable layer disposed on at least a portion thereof. Methods of making and using the structured abrasive articles are also disclosed.

An abrasive flap disc having improved properties with respect to production and grinding behavior combines an abrasive grit having a special grit mixture having 25% to 75% (high-performance ceramic) zirconium dioxide and of 25% to 75% aluminum oxide and a number of abrasive lamellae per abrasive flap disc in the range between 30 and 46.

An abrasive flap disc having improved properties with respect to production and grinding behavior combines an abrasive grit having a special grit mixture having 25% to 75% (high-performance ceramic) zirconium dioxide and of 25% to 75% aluminum oxide and a number of abrasive lamellae per abrasive flap disc in the range between 30 and 46.

A method of processing a superabrasive element includes providing a superabrasive element including a polycrystalline diamond table that includes a metallic material disposed in interstitial spaces defined within the polycrystalline diamond table. The polycrystalline diamond table includes a superabrasive face and a superabrasive side surface extending around an outer periphery of the superabrasive face. The method also includes leaching the metallic material from at least a volume of the polycrystalline diamond table to produce a leached volume in the polycrystalline diamond table by (1) exposing at least a portion of the polycrystalline diamond table to a processing solution, (2) exposing an electrode to the processing solution, and (3) applying a charge to the electrode such that a voltage is generated between the polycrystalline diamond table and the electrode and the voltage is applied to the processing solution.

An exchangeable abrasive mechanism or disc for use on abrasive-mechanism carriers having suction holes includes a plurality of through openings that each have a centroid. The through openings are differentiated into three groups that differ in the radial disposition of the centroids. A first group comprises at least one, but not more than four, through openings of a first cross section. At least two of the through openings of the first group are disposed on a first circumcircle diameter that is substantially identical to one of the hole-circle diameters such that, when the abrasive mechanism is correctly disposed on an abrasive-mechanism carrier, they are in direct alignment with and can overlap, two corresponding suction holes. A second group of through openings of a second, preferably smaller, cross section, comprises at least four through openings that are disposed on a second circumcircle diameter that differs from the first circumcircle diameter.

An exchangeable abrasive mechanism or disc for use on abrasive-mechanism carriers having suction holes includes a plurality of through openings that each have a centroid. The through openings are differentiated into three groups that differ in the radial disposition of the centroids. A first group comprises at least one, but not more than four, through openings of a first cross section. At least two of the through openings of the first group are disposed on a first circumcircle diameter that is substantially identical to one of the hole-circle diameters such that, when the abrasive mechanism is correctly disposed on an abrasive-mechanism carrier, they are in direct alignment with and can overlap, two corresponding suction holes. A second group of through openings of a second, preferably smaller, cross section, comprises at least four through openings that are disposed on a second circumcircle diameter that differs from the first circumcircle diameter.

Provided are multilayered abrasive articles that include an abrasive composite having shaped features, a carrier film, and a nonwoven web, where the nonwoven web and the carrier film have respective patterns of discrete, three-dimensional protrusions that are aligned with each other. A compressible foam backing extending across a major surface of the nonwoven web opposite the carrier film. Further provided are multilayered abrasive articles that include an abrasive composite, a carrier film, and a non-woven web. The nonwoven web and the carrier film have respective patterns of discrete, three-dimensional protrusions that are aligned with each other and the shaped features and the three-dimensional protrusions of the nonwoven web have an average diameter:average diameter ratio ranging from 1:50 to 1:5.

Various embodiments disclosed relate to an abrasive article and method of forming abrasive articles using backfill to secure orientation of shaped abrasive particles. An example method includes aligning a plurality of shaped abrasive particles into a pattern, and transferring the pattern to a backing substrate containing a layer of adhesive. Prior to curing the adhesive, a plurality of backfill particles are transferred to the backing substrate, where at least some of the plurality of backfill particles are disposed between the plurality of shaped abrasive particles.

A low pressure, low speed concrete polishing apparatus and method of cleaning and polishing a floor a polishing pad and interchangeable polymer strips. The interchangeable polymer strips are slideably received within the housing of the pad. The polymer strips have an abrasive material embedded therein which collectively work to polish the floor while cleaning the floor during normal speed floor cleaning conditions.

A low pressure, low speed concrete polishing apparatus and method of cleaning and polishing a floor a polishing pad and interchangeable polymer strips. The interchangeable polymer strips are slideably received within the housing of the pad. The polymer strips have an abrasive material embedded therein which collectively work to polish the floor while cleaning the floor during normal speed floor cleaning conditions.