An abrasive article has an abrasive portion with an organic bond and abrasive particles. The abrasive article has a non-abrasive portion (NAP) mounted to the abrasive portion. The NAP includes molding compound (MC) having chopped strand fibers (CSF). The CSF can be coated with a thermoplastic coating having a loss on ignition (LOI) of at least about 2.4 wt %, and the NAP having no abrasive particles. The NAP can include an MC having no abrasive particles with a MOHS scale hardness of at least about 9. The NAP may include CSF coated with a primary coating and a secondary coating on the primary coating. The NAP may have an outer diameter that is at least half of but not greater than an outer diameter of the abrasive article.

An abrasive article comprises abrasive particles adhered to a substrate by a binder material comprising an at least partially cured resole phenolic resin and an aliphatic tack modifier. The amount of resole phenolic resin comprises from 60 to 98 weight percent of the combined weight of the resole phenolic resin and the aliphatic tack modifier. A method of making the abrasive article is also disclosed.

A method for dry production of a sliding layer on a flexible backing, in particular a backing that includes a textile or an abrasive backing, includes at least the following. A binder, or more particularly an adhesive such as a hot-applied adhesive or a hotmelt, is applied to a flexible backing. The binder is applied in dry form, such as via scattering, and is joined to the backing via exposure to heat to form a sliding layer on the backing and to hold the sliding layer at least one of on and in the backing. A lubricant, or more particularly a lubricant that includes graphite or PTFE, is applied to at least one of the backing and the binder.

A method of abrading a workpiece includes: contacting a metallic workpiece, having a bulk temperature of less than 500 degrees Celsius, with a stationary rotating bonded abrasive wheel having a diameter of at least 150 millimeters, wherein the bonded abrasive wheel comprises ceramic shaped abrasive particles retained in a binder, and wherein metallic swarf is formed, and at least 20 percent by weight of the metallic swarf is filamentary metallic swarf having a length of at least 3 mm.

An abrasive article comprises abrasive particles adhered to a substrate by a binder material comprising an at least partially cured resole phenolic resin and an aliphatic tack modifier. The amount of resole phenolic resin comprises from 60 to 98 weight percent of the combined weight of the resole phenolic resin and the aliphatic tack modifier. A method of making the abrasive article is also disclosed.

A composition that can be used for abrasive processing is disclosed. The composition includes an organic bond material, an abrasive material dispersed in the organic bond material, and a plurality of microfibers uniformly dispersed in the organic bond material. The microfibers are individual filaments having an average length of less than about 1000 m. Abrasive articles made with the composition exhibit improved strength and impact resistance relative to non-reinforced abrasive tools, and improved wheel wear rate and G-ratio relative to conventional reinforced tools. Active fillers that interact with microfibers may be used to further abrasive process benefits.

An abrasive article including a bonded abrasive body coupled to a core, the core includes a composite material including an organic material and a metallic material, and the composite material includes at least a first filler that can include nitrides, carbides, borides, oxides, silicates, or a combination thereof.

An abrasive article can include a body including a bond material and abrasive particles contained within the bond material. The body can include a filler composition. In a particular embodiment, the filler composition can include at least one filler from a first filler class and at least one filler from a second filler class. The first filler class can include pyrite, potassium sulfate (K2SO4), potassium chloride (KCl), and lime (CaO), and a combination thereof, and the second filler class includes basalt, mullite, zinc sulfide (ZnS), barium sulfate (BaSO.sub.4), potassium titanate (K.sub.2O.nTiO.sub.2) or a combination thereof. In another particular embodiment, the filler composition can include a second filler class including basalt in a content within a range between 1 wt % and not greater than 30 wt % for a total weight of the body. In another particular embodiment, the filler composition can include a second filler class including zinc sulfide (ZnS) in a content within a range between 1 wt % and not greater than 30 wt % for a total weight of the body. In still another particular embodiment, the filler composition can include a second filler class including barium sulfate (BaSO.sub.4) in a content within a range between 1 wt % and not greater than 30 wt % for a total weight of the body. In another particular embodiment, the filler composition can include a second filler class including potassium titanate (K.sub.2O.nTiO.sub.2) in a content within a range between 0.1 wt % and not greater than 30 wt % for a total weight of the body. In another particular embodiment, the filler composition can include a second filler class including mullite in a content within a range between 1 wt % and not greater than 30 wt % for a total weight of the body.

A nonwoven abrasive article includes a prebond composition disposed on a lofty open nonwoven fiber web, an abrasive layer disposed on and secured to at least a portion of the prebond composition. The abrasive layer comprises a binder composition retaining abrasive particles. At least one of the prebond composition and the binder composition comprises a reaction product of a polymer having a plurality of oxazolinyl groups. Methods of making the nonwoven abrasive article are also disclosed.

[Problem]

Provided is a long-life sheet-like abrasive article which comprises an abrasive material layer comprising closed-cell bodies and abrasive grains, wherein the closed-cell bodies not only provide air voids for discharging chips, but also ensure a space between the surface of the abrasive material layer and a workpiece material, thereby facilitating discharge of chips of the workpiece material, and, as the closed-cell bodies in a surface part of the abrasive material layer break up due to friction caused by an abrading work, new abrasive grains act on a workpiece material, thereby allowing the abrasive material layer to have self-dressing ability.

[Solution]

The sheet-like abrasive article comprises a substrate, and an abrasive material layer provided on one surface of the substrate, wherein the abrasive material layer comprises closed-cell bodies, first abrasive grains, and a first adhesive binder, wherein: each of the closed-cell bodies has an inner diameter of 30 m to 200 m; the first abrasive grains have an average grain size which is equal to or less than of one third of the inner diameter of each of the closed-cell bodies; and the first adhesive binder adhesively bonds the abrasive material layer to the substrate, and wherein the closed-cell bodies, the first abrasive grains and the first adhesive binder account for 70% by volume to 85% by volume, 5% by volume to 13% by volume, and a remainder, respectively, based on a volume of an entirety of the abrasive material layer.