Abrasive article and method of forming

Patent metadata

Field	Value
Publication number	US-9533397-B2
Application number	US-201313930223-A
Country	US
Kind code	B2
Filing date	Jun 28, 2013
Priority date	Jun 29, 2012
Publication date	Jan 3, 2017
Grant date	Jan 3, 2017

Abstract

An abrasive article including a substrate having an elongated body, a tacking layer overlying the substrate, a first type of abrasive particle overlying the tacking layer, a second type of abrasive particle different than the first type of abrasive particles overlying the tacking layer, and a bonding layer overlying at least a portion of one of the first type of abrasive particle and the second type of abrasive particle and the tacking layer.

First claim

What is claimed is:

1. An abrasive article comprising:
a substrate comprising an elongated body having an aspect ratio of length:width of at least about 10:1;
a tacking layer overlying the substrate, wherein the tacking layer has a melting point of not greater than about 450° C.;
a first type of abrasive particle comprising an agglomerated particle overlying and in contact with the tacking layer, wherein the tacking layer comprises an average thickness of at least about 11% of an average particle size of the first type of abrasive particle;
a second type of abrasive particle different than the first type of abrasive particle and comprising an unagglomerated particle overlying and in contact with the tacking layer; and
a bonding layer overlying at least a portion of one of the first type of abrasive particle and the second type of abrasive particle and the tacking layer, wherein the tacking layer is bonded to the surface of the substrate at a bonding region defined by an interdiffusion of elements between the tacking layer and the substrate.

2. The abrasive article of claim 1 , further comprising a barrier layer in direct contact with a peripheral surface of the substrate and wherein the barrier layer is disposed between the peripheral surface of the substrate and the tacking layer.

3. The abrasive article of claim 2 , wherein the barrier layer comprises a material different from the tacking layer.

4. The abrasive article of claim 2 , wherein the barrier layer comprises a non-alloyed material.

5. The abrasive article of claim 2 , wherein the barrier layer comprises an average thickness of not greater than about 10 microns.

6. The abrasive article of claim 2 , wherein the barrier layer is a dip-coating layer.

7. The abrasive article of claim 2 , wherein the barrier layer is applied at a temperature not greater than about 400° C.

8. An abrasive article comprising:
a substrate comprising an elongated body having an aspect ratio of length:width of at least about 10:1;
a tacking layer overlying the substrate, wherein the tacking layer has a melting point of not greater than about 450° C.;
a first type of abrasive particle comprising an agglomerated particle overlying and in contact with the tacking layer, wherein the tacking layer comprises an average thickness of at least about 11% of an average particle size of the first type of abrasive particle;
a second type of abrasive particle different than the first type of abrasive particle and comprising an unagglomerated particle overlying and in contact with the tacking layer; and
a bonding layer overlying at least a portion of one of the first type of abrasive particle and the second type of abrasive particle and the tacking layer, wherein the first type of abrasive particle defines a first layer of abrasive particles, and wherein the first layer of abrasive particles define a pattern.

9. The abrasive article of claim 8 , wherein the pattern is defined by a repeating radial component.

10. The abrasive article of claim 8 , wherein the pattern is defined by a repeating axial component.

11. The abrasive article of claim 8 , wherein the pattern is defined by a combination of a repeating radial component, axial component, and circumferential component.

12. The abrasive article of claim 8 , wherein the first layer of abrasive particles define a first helical pattern defined by a plurality of turns, wherein the turns are axially spaced apart from each other.

13. The abrasive article of claim 8 , wherein the tacking layer comprises an average thickness of not greater than about 80% of an average particle size of the first type of abrasive particle, the second type of abrasive particle, the total average particle size of the first type and second type of abrasive particle.

14. The abrasive article of claim 8 , wherein the first type of abrasive particle is different than the second type of abrasive particle based on at least one particle characteristics selected from the group consisting of hardness, friability, toughness, particle shape, crystalline structure, average particle size, composition, particle coating, grit size distribution, and a combination thereof.

15. The abrasive article of claim 8 , wherein the first type of abrasive particle comprises an average particle size of not greater than about 500 microns and at least about 0.1 microns.

16. The abrasive article of claim 15 , wherein the second type of abrasive particle comprises an average particle size of not greater than about 500 microns and at least about 0.1 microns.

17. The abrasive article of claim 8 , wherein the first type of abrasive particle comprises a first average particle size (P1) and the second type of abrasive particle comprises a second average particle size (P2), and wherein the first average particle size is at least about 5% different than the second average particle size based on the equation ((P1-P2)/P1)×100%.

18. The abrasive article of claim 8 , wherein the first type of abrasive particle comprises a first average hardness (H 1 ) and the second type of abrasive particle comprises a second average hardness (H 2 ), and wherein the first average hardness is at least about 5% different than the second average hardness based on the equation ((H 1 -H 2 )/H 1 )×100%.

19. The abrasive article of claim 8 , wherein the first type of abrasive particle is present in a first content (particle count) and the second type of abrasive particle is present in a second content (particle count) and wherein the abrasive article further comprises a particle count ratio (FC:SC) of first content (FC) to second content (SC) of not greater than about 100:1.

Assignees

• Rehrig Paul W
• Tian Yinggang
• Che Wei
• Khaund Arup K
• Puthanangady Thomas
• Arcona Christopher
• Ramanath Srinivasan
• Saint Gobain Abrasives Inc
• Saint Gobain Abrasifs Sa

Inventors

• Rehrig Paul W
• Tian Yinggang
• Che Wei
• Khaund Arup K
• Puthanangady Thomas
• Arcona Christopher
• Ramanath Srinivasan

Classifications

• B23D65/00

  Making tools for sawing machines or sawing devices for use in cutting any kind of material · CPC title

• B28D5/045

  by cutting with wires or closed-loop blades (B28D5/042 takes precedence) · CPC title

• B24D11/00 Primary

  Constructional features of flexible abrasive materials; Special features in the manufacture of such materials · CPC title

• B23D61/185 Primary

  Saw wires; Saw cables; Twisted saw strips · CPC title

• B28D5/042

  by cutting with blades or wires mounted in a reciprocating frame · CPC title