Abrasive articles and methods for forming same

Patent metadata

Field	Value
Publication number	US-12559657-B2
Application number	US-202218148043-A
Country	US
Kind code	B2
Filing date	Dec 29, 2022
Priority date	Dec 29, 2021
Publication date	Feb 24, 2026
Grant date	Feb 24, 2026

Abstract

An abrasive article can include a core and an abrasive component attached to the core. The abrasive component may include a body including a leading end and a trailing end, wherein the leading end has a width greater than a width of the trailing end. In an embodiment, the abrasive component may include a body including a first abrasive portion and a second abrasive portion, wherein a radial width of the first abrasive portion is greater than a radial width of the second abrasive portion.

First claim

What is claimed is:

1 . An abrasive article, comprising a core and at least one abrasive component attached to the core, wherein the at least one abrasive component comprises a body including:
a first abrasive portion including a leading end; a second abrasive portion connected to the first abrasive portion including a trailing end and a second circumferential length of at least 30% of a total circumferential length of the body; and an inner circumferential surface and an outer circumferential surface extending between the leading end and the trailing end, wherein the leading end and the trailing end extend between the inner circumferential surface and the outer circumferential surface, wherein: each of the leading end and trailing end has a width measured between the inner and outer circumferential surfaces, wherein the width of the trailing end is different than the width of the leading end; and the first abrasive portion comprises a first radial width measured between the inner circumferential surface and the outer circumferential surface, and the second abrasive portion comprises a second radial width measured between the inner circumferential surface and the outer circumferential surface, wherein the first radial width is greater than the second radial width.

2 . The abrasive article of claim 1 , wherein the width of the leading end is greater than the width of the trailing end.

3 . The abrasive article of claim 1 , wherein the first circumferential length is at least 25% of a total circumferential length of the body.

4 . The abrasive article of claim 1 , wherein the first radial width is constant along a first circumferential length of the first abrasive portion.

5 . The abrasive article of claim 1 , wherein the first radial width decreases along a first circumferential length of the first abrasive portion toward the trailing end.

6 . The abrasive article of claim 1 , wherein the body comprises a bond material and abrasive particles contained in the bond material, wherein the bond material comprises metal.

7 . The abrasive article of claim 1 , wherein the body comprises:
a bond material in a content of 10 vol % to 70 vol % for a total volume of the body; abrasive particles in a content of 5 vol % to 50 vol % for the total volume of the body; and porosity of at most 10 vol % for the total volume of the body.

8 . The abrasive article of claim 1 , comprising a plurality of abrasive components attached to the core, wherein the plurality of abrasive components are spaced apart from one another along a circumference of the core.

9 . The abrasive article of claim 1 , wherein the body comprises a tapered shape.

10 . The abrasive article of claim 9 , wherein a radial distance between the outer circumferential surface and the inner circumferential surface reduces toward the trailing end.

11 . The abrasive article of claim 1 , wherein the body comprises a cross section in a shape of a trapezoid when cut in a radial direction of the abrasive article.

12 . The abrasive article of claim 1 , wherein:
the body comprises a top surface and a bottom surface extending between the inner and outer circumferential surfaces and between the leading and trailing ends, wherein the bottom surface is attached to the core; and the first abrasive portion comprises
a radial width, W T , measure along the top surface between the inner and outer circumferential surfaces; and
a radial width, W B , measured along the bottom surface between the inner and outer circumferential surfaces,
wherein W T >W B .

13 . An abrasive article, comprising a core and at least one abrasive component attached to the core, wherein the at least one abrasive component comprises a body including:
a first abrasive portion including a leading end; a second abrasive portion connected to the first abrasive portion including a trailing end; and an inner circumferential surface and an outer circumferential surface extending between the leading end and the trailing end, wherein the leading end and the trailing end extend between the inner circumferential surface and the outer circumferential surface; and wherein each of the leading end and trailing end has a width measured between the inner and outer circumferential surfaces, wherein the width of the trailing end is different than the width of the leading end, and wherein the body comprises a transitional edge between the first abrasive portion and the second abrasive portion.

14 . The abrasive article of claim 13 , wherein the first abrasive portion comprises a first radial width measured between the inner circumferential surface and the outer circumferential surface; and wherein the second abrasive portion comprises a second radial width measured between the inner circumferential surface and the outer circumferential surface, wherein the first radial width is greater than the second radial width.

15 . The abrasive article of claim 13 , wherein the transitional edge comprises a chamfer.

16 . The abrasive article of claim 13 , wherein the second abrasive portion comprises a second circumferential length, wherein the second circumferential length is at least 30% of a total circumferential length of the body of the at least one abrasive component.

17 . An abrasive article, comprising a core and at least one abrasive component attached to the core, wherein the at least one abrasive component comprises a body including:
a first abrasive portion including a leading end; a second abrasive portion connected to the first abrasive portion including the trailing end; a third abrasive portion connected to the first and second abrasive portions; an inner circumferential surface and an outer circumferential surface extending between the leading end and the trailing end, wherein the leading end and the trailing end extend between the inner circumferential surface and the outer circumferential surface, and the leading end and trailing end have a different width measured between the inner and outer circumferential surfaces, wherein the third abrasive portion comprises a third radial width measured between the inner circumferential surface and the outer circumferential surface, wherein the third radial width is different from a first radial width of the first abrasive portion or a second radial width of the second abrasive portion or both.

18 . The abrasive article of claim 17 , wherein the body comprises a chamfer between the first abrasive portion and the third abrasive portion and between the third abrasive portion and the second abrasive portion.

19 . The abrasive article of claim 17 , wherein the third abrasive portion comprises a third circumferential length of at least 10% of a total circumferential length of the body.

20 . The abrasive article of claim 17 , wherein the body comprises a beveled edge connecting the leading end or the trailing end to the inner and outer circumferential surfaces.

Assignees

• Saint Gobain Abrasives Inc
• Saint Gobain Surface Solutions France

Inventors

• Ringenbach Gwenaëlle
• Gosamo Ignazio

Classifications

• B28D1/041

  with cylinder saws, e.g. trepanning; saw cylinders, e.g. having their cutting rim equipped with abrasive particles · CPC title

• B23B51/04

  {Drills} for trepanning · CPC title

• B24D3/06

  metallic {or mixture of metals with ceramic materials, e.g. hard metals, "cermets", cements} · CPC title

• E21B10/16

  characterised by tooth form or arrangement · CPC title

• C09K3/1409 Primary

  Abrasive particles per se (preparation of diamond C01B32/25) · CPC title