A lapping material having a knitted fabric constituted by warp knitting or weft knitting, and a resin with which the knitted fabric is impregnated.

A bonded abrasive article includes elongate shaped abrasive particles. The elongate shaped abrasive particles comprise an elongate shaped ceramic body having opposed first and second ends joined to each other by at least two longitudinal sidewalls. At least one of the at least two longitudinal sidewalls is concave along its length. At least one of the first and second ends is a fractured surface.

Methods of making polymer bond abrasive articles and their precursors using powder bed jetting are disclosed. Polymer bond abrasive articles prepared by the method include abrasive articles having arcuate or tortuous cooling channels, unitary structured abrasive discs, abrasive segments, shaped abrasive particles, and abrasive wheels.

Dressing tool which has profiled elements arranged coaxially with one another and which are each provided with a profile form, which is tapered or the like in its axial cross-section and has working surfaces provided with hard-material particles. The profiled elements are delimited at their outer circumference by at least one generated surface. The dressing tool preferably includes six profiled elements arranged coaxially with one another, and a one-part or two-part metallic main body for the entire dressing tool or for a particular generated surface. The profile forms with the hard-material particles of the profiled elements may be produced by a negative process with a casting compound applied to the particular main body. This dressing tool can thus be used for a profiling of grinding worms extremely productively and precisely and also such that they can be corrected.

Dressing tool which has profiled elements arranged coaxially with one another and which are each provided with a profile form, which is tapered or the like in its axial cross-section and has working surfaces provided with hard-material particles. The profiled elements are delimited at their outer circumference by at least one generated surface. The dressing tool preferably includes six profiled elements arranged coaxially with one another, and a one-part or two-part metallic main body for the entire dressing tool or for a particular generated surface. The profile forms with the hard-material particles of the profiled elements may be produced by a negative process with a casting compound applied to the particular main body. This dressing tool can thus be used for a profiling of grinding worms extremely productively and precisely and also such that they can be corrected.

An abrasive article includes a first plurality of abrasive particles and a second plurality of abrasive particles. The first plurality of abrasive particles differ in at least one of a size, an average weight and a shape from the second plurality of abrasive particles. The first plurality of abrasive particles are spaced from the second plurality of abrasive particles by at least a minimum distance in the x-axis direction, and both the first plurality of abrasive particles and the second plurality of abrasive particles extend in similar paths to one another with respect to the y-axis.

A fixed abrasive article having a body including abrasive particles contained within a bond material, the abrasive particles including shaped abrasive particles or elongated abrasive particles having an aspect ratio of length:width of at least 1.1:1, each of the shaped abrasive particles or elongated abrasive particles having a predetermined position or a predetermined three-axis orientation.

Embodiments relate to a porous polyurethane polishing pad for use in a chemical mechanical planarization and a process for preparing the same. It is possible to control the size and distribution of pores in the porous polyurethane polishing pad by using thermally expanded microcapsules and an inert gas as a gas phase foaming agent, whereby the polishing performance thereof can be adjusted.

A coated abrasive article comprising a backing, an adhesive layer disposed in a discontinuous distribution on at least a portion of the backing, wherein the discontinuous distribution comprises a plurality of adhesive contact regions and at least one shaped abrasive particle is disposed on a majority of each of the discrete adhesive contact regions, wherein at least 50% of the shaped abrasive particles comprise a predetermined side orientation and have a tilt angle of at least 45 degrees, wherein the shaped abrasive particles comprise a polycrystalline material and are free of binder, wherein the first plurality of discrete adhesive contact regions comprise a predetermined two-dimensional shape as viewed from above, and wherein each of the discrete contact regions comprises a length, a width, or a combination thereof that substantially corresponds to a dimension of the at least one abrasive particle.

A bonded abrasive article includes elongate shaped abrasive particles. The elongate shaped abrasive particles comprise an elongate shaped ceramic body having opposed first and second ends joined to each other by at least two longitudinal sidewalls. At least one of the at least two longitudinal sidewalls is concave along its length. At least one of the first and second ends is a fractured surface.