ABRASIVE ARTICLE INCLUDING SHAPED ABRASIVE PARTICLES

• US 20150183089A1
• Filed: 12/22/2014
• Published: 07/02/2015
• Est. Priority Date: 12/31/2013
• Status: Active Grant

• Current Assignee: Saint-Gobain Abrasives Incorporated (Compagnie De Saint-Gobain), Saint-Gobain Abrasifs (Compagnie de Saint-Gobain SA)
• Original Assignee: Saint-Gobain Abrasives Incorporated (Compagnie De Saint-Gobain), Saint-Gobain Abrasifs (Compagnie de Saint-Gobain SA)
• Inventors: IYENGAR, Sujatha
• Granted Patent: US 9,566,689 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B24D 11/00 Constructional features of flexible abrasive materials; Special features in the manufacture of such materials
• CPC Class Codes: B24D 11/005 Making abrasive webs
• CPC Class Codes: C09K 3/1409 Abrasive particles per se preparation of diamond C01B32/25

Abstract

A fixed abrasive article including a blend of abrasive particles having a first type of shaped abrasive particle comprising a first height (h1), a second type of shaped abrasive particle comprising a second height (h2) less than the first height, where the blend of abrasive particles includes a first content of the first type of shaped abrasive particles and a second content of the second type of shaped abrasive particle, and the first content is different as compared to the second content.

Claims

1. A fixed abrasive article comprising:

a blend of abrasive particles comprising;

a first type of shaped abrasive particle comprising a first height (h1);

a second type of shaped abrasive particle comprising a second height (h2) less than the first height.

2. The fixed abrasive article of claim 1, further comprising a height ratio (h2/h1) of is at least about 0.05 and not greater than about 0.98.

3. The fixed abrasive article of claim 1, further comprising a height difference (h1−

h2) of at least about 1 micron and not greater than about 2 mm.

4. The fixed abrasive article of claim 1, wherein the first type of shaped abrasive particle comprises a first length (l1), and the second type of shaped abrasive particle comprises a second length (l2), and further comprising a length ratio (l1/l2) of at least about 0.05 and not greater than about 10.

5. The fixed abrasive article of claim 1, wherein the first content is less than the second content.

6. The fixed abrasive article of claim 1, wherein the first content is at least about 1% and not greater than about 90% of the total content of the blend, and wherein the second content at least about 1% and not greater than about 98% of the total content of the blend.

7. The fixed abrasive article of claim 1, wherein the blend of abrasive particles comprises a first content (C1) of the first type of shaped abrasive particle, and a second content (C2) of the second type of shaped abrasive particle, and further comprising a blend ratio (C1/C2) of not greater than about 10.

8. The fixed abrasive article of claim 7, wherein the blend ratio (C1/C2) is at least about 0.1.

9. The fixed abrasive article of claim 1, wherein the blend further comprises a third type of abrasive particle including a shaped abrasive particle.

10. The fixed abrasive article of claim 1, wherein the fixed abrasive article is selected from the group consisting of a bonded abrasive article, a coated abrasive article, and a combination thereof.

11. The fixed abrasive article of claim 1, wherein the blend of abrasive particles comprises a plurality of shaped abrasive particles, and wherein each shaped abrasive particle of the plurality of shaped abrasive particles is arranged in a controlled orientation relative to a backing, the controlled orientation including at least one of a predetermined rotational orientation, a predetermined lateral orientation, and a predetermined longitudinal orientation.

12. The fixed abrasive article of claim 11, wherein a majority of the first type of abrasive particles are coupled to the backing in a side orientation and wherein a majority of the second type of abrasive particles are coupled to the backing in a side orientation.

13. The fixed abrasive article of claim 1, wherein the first type of shaped abrasive particle comprises a body having a length (l), a width (w), and a height (hi), wherein the width≧

length, the length≧

height, and the width≧

height, and wherein the body comprises a two-dimensional polygonal shape as viewed in a plane defined by a length and width, wherein the body comprises a shape selected from the group consisting of triangular, quadrilateral, rectangular, trapezoidal, pentagonal, hexagonal, heptagonal, octagonal, and a combination thereof.

14. The fixed abrasive article of claim 13, wherein the body comprises a polycrystalline material selected from the group of materials consisting of nitrides, oxides, carbides, borides, oxynitrides, diamond, and a combination thereof.

15. The fixed abrasive article of claim 1, wherein the fixed abrasive article comprises a stainless steel lifespan of at least about 11 in³ and not greater than about 25 in³.

16. A method of removing material from a workpiece using an abrasive article including a blend of abrasive particles comprising:

a first type of shaped abrasive particle comprising a first height (h1);

a second type of shaped abrasive particle comprising a second height (h2) less than the first height.

17. The method of claim 16, wherein the workpiece comprises a metal alloy.

18. The method of claim 16, wherein the fixed abrasive article comprises a stainless steel lifespan of at least about 11 in³ and not greater than about 25 in³.

19. The method of claim 16, further comprising a height ratio (h2/h1) of at least about 0.05 and not greater than about 0.98 and a height difference (h1−

h2) of at least about 1 micron and not greater than about 2 mm.

20. The method of claim 16, wherein the blend of abrasive particles comprises a first content (C1) of the first type of shaped abrasive particle, and a second content (C2) of the second type of shaped abrasive particle, and further comprising a blend ratio (C1/C2) of not greater than about 10.