An abrasive tool can include a bonded abrasive including a body and a barrier layer bonded to a major surface of the body. The body can include abrasive particles contained within a bond material. The barrier material can include a polymer including a biaxially-oriented material. In an embodiment, the barrier layer may include a polymer-containing film as an exterior surface of the abrasive tool. The abrasive tool may be formed such that the barrier layer is formed in-situ with the formation of the bonded abrasive.

An abrasive tool can include a bonded abrasive including a body and a barrier layer bonded to a major surface of the body. The body can include abrasive particles contained within a bond material. The barrier material can include a polymer including a biaxially-oriented material. In an embodiment, the barrier layer may include a polymer-containing film as an exterior surface of the abrasive tool. The abrasive tool may be formed such that the barrier layer is formed in-situ with the formation of the bonded abrasive.

A method of making a bonded abrasive article comprises urging crushed abrasive particles with agitation against the surface of a tool, thereby causing a first portion of crushed abrasive particles to become retained within horizontally-oriented precisely-shaped cavities at predetermined locations with respect to the surface of the tool, and causing a second portion of the crushed abrasive particles to remain as loose particles on the surface of the tool. The loose particles are separated from the tool. The tool is positioned within a mold containing a curable binder material precursor. The crushed abrasive particles retained in the precisely-shaped cavities into the mold are released, and the tool is removed from the mold. The crushed abrasive particles and the curable binder material precursor are shaped and cured to form the bonded abrasive article. A bonded abrasive article preparable by the method is also disclosed.

A grinding body including a substantially cylindrical outer member for receiving an abrasive material, an inner member for attaching the grinding body to a drive unit, and a connecting structure for mechanical force transmission between the outer member and the inner member. The outer member, the inner member, and/or the connecting structure may be made at least in part of a fiber-plastic composite.

A method of manufacturing an abrasive member, in particular having the general shape of a disc such as a cutting or grinding disc, comprises arranging a reinforcing insert or reinforcing member into a mold between a layer of curable abrasive resin compound, in particular a layer of curable abrasive granulate, a backing member such that at least a section of the reinforcing insert or reinforcing member is in direct physical contact with the curable abrasive resin compound, the reinforcing insert or reinforcing member is at least partially covered by the backing member and at least a section of the backing member is in direct physical contact with the curable abrasive resin compound; bonding the reinforcing insert or reinforcing member and the backing member by curing the curable abrasive resin compound, wherein the cured abrasive resin compound forms an abrasive layer of the abrasive member.

A method of manufacturing an abrasive member, in particular having the general shape of a disc such as a cutting or grinding disc, comprises arranging a reinforcing insert or reinforcing member into a mold between a layer of curable abrasive resin compound, in particular a layer of curable abrasive granulate, a backing member such that at least a section of the reinforcing insert or reinforcing member is in direct physical contact with the curable abrasive resin compound, the reinforcing insert or reinforcing member is at least partially covered by the backing member and at least a section of the backing member is in direct physical contact with the curable abrasive resin compound; bonding the reinforcing insert or reinforcing member and the backing member by curing the curable abrasive resin compound, wherein the cured abrasive resin compound forms an abrasive layer of the abrasive member.

An abrasive article with an abrasive body a reinforcing member disposed within the body and a bond material that includes a bulk molding compound material. The abrasive article can have an average burst speed of at least (Formula (I)) wherein c is the circumferences of the wheel in mm.

[00001]$\begin{array}{cc}26800\mathrm{RPM}-27\frac{\mathrm{RPM}}{mm}*C& \left(I\right)\end{array}$

A chemical mechanical planarization (CMP) pad conditioning assembly that includes one or more support structures positioned between one or more abrasive regions of the pad conditioning assembly is disclosed. The support structures and abrasive regions can be separated by one or more channels. A top surface of the one or more support structures is not co-planar with the top surface of the abrasive regions of the pad conditioning assembly, and the height of the top surface of the one or more support structures when measured to the pad facing surface of the pad conditioning assembly backing plate is less than the height of the top surfaces of the abrasive regions when measured to the pad facing surface of the pad conditioning assembly.

A problem solved is realizing a self-sharpening of a rotary grindstone in the most efficient manner and allowing sequential appearances of sharp cutting faces. To solve the problem, the invention provides a manufacturing method of a rotary grindstone 1 with one or more sheets of glass cloth 4 as a reinforcing material, wherein the glass cloth 4 is weaved by thirl plain weave/twill weave or leno weave composed of twist yarns having a diameter of 0.1 mm or less and formed in meshes with lengthwise and crosswise lengths of 2.0 mm or less, and attaching liquid resin to the glass cloth 4 to produce a prepreg 6, attaching resin-coat abrasive grains to both faces of the prepreg 6, and pressing the prepreg 6 in a press machine and further performing predetermined press working in a metal mold, performing baking.

A problem solved is realizing a self-sharpening of a rotary grindstone in the most efficient manner and allowing sequential appearances of sharp cutting faces. To solve the problem, the invention provides a manufacturing method of a rotary grindstone 1 with one or more sheets of glass cloth 4 as a reinforcing material, wherein the glass cloth 4 is weaved by thirl plain weave/twill weave or leno weave composed of twist yarns having a diameter of 0.1 mm or less and formed in meshes with lengthwise and crosswise lengths of 2.0 mm or less, and attaching liquid resin to the glass cloth 4 to produce a prepreg 6, attaching resin-coat abrasive grains to both faces of the prepreg 6, and pressing the prepreg 6 in a press machine and further performing predetermined press working in a metal mold, performing baking.