Patterned abrasive material and method
AssigneeUltimate Abrasive Systems, L.L.C.
InventorNaum N. Tselesin
Life of this patent
Estimating the term…
Abstract
An abrasive material is formed by coating a substrate with an adhesive, contacting he substrate with a quantity of hard, abrasive particles, then removing all particles not held by the adhesive. The remaining particles are surrounded with a sinterable or fusible material while the particles are temporarily held. The substrate can have the adhesive applied in a pattern, or covering uniformly and masked, to cause particles to adhere in certain areas to achieve a desired pattern. While the particles are held on the substrate, physical force can be applied to orient the particles uniformly; then, a powder can be applied, or the substrate can be applied to a preform. Subsequent treatment with heat and/or pressure will complete the abrasive material.
Claims18
A method for making an abrasive material comprising the steps of coating a substrate with an adhesive, contacting said substrate with a first plurality of hard particles and then removing a second plurality of hard particles consisting of particles that are not adhered to said substrate by said adhesive so that a third plurality of hard particles remains on said substrate adhered to said substrate by said adhesive, and at least partially surrounding most of the particles of said third plurality of hard particles with a sinterable matrix material, and heating said material to cause said sinterable matrix material to permanently hold said third plurality of hard particles, wherein the said step of at least partially surrounding most of the hard particles with a sinterable matrix material includes the steps of sealing one side of a porous quantity of fusible powder into said porous preform, and placing together said porous preform and said substrate having said hard particles adhered to it prior to the said step of heating the material.
A method for making an abrasive material, said abrasive material comprising a plurality of hard particles for providing the abrasive quality, and a sinterable matrix material having the hard particles distributed therein for holding said hard particles, said method comprising the steps of placing a pressure sensitive adhesive tape against one side of a mask so that said pressure sensitive adhesive tape is adhered to said mask, said mask defining a plurality of openings distributed in a predetermined pattern, said openings extending completely through said mask so that said pressure sensitive adhesive tape closes said openings, then placing a quantity of hard particles against the opposite side of said mask so that some of said hard particles are received within said openings and at least some of said hard particles that are received within said openings are adhered to said pressure sensitive adhesive tape, removing hard particles that are not adhered to said pressure sensitive adhesive tape and subsequently at least partially surrounding said particles that are adhered to said pressure sensitive adhesive tape with a sinterable matrix material and heating said material to cause said material to hold said particles that adhere to said tape.
Dependencies are inferred from the claim text.