IP Library › Granted Patent US 12,305,108
Granted Patent B2
US 12,305,108 · App. 16/751,774 · Granted May 20, 2025

Shaped abrasive particles and methods of forming same

Inventors: Adam J. Stevenson (Le Thor, FR); Amin M'Barki (Cavaillon, FR); David F. Louapre (Paris, FR); Doruk O. Yener (Bedford, MA); Jennifer H. Czerepinski (Framingham, MA); Nabil Nahas (Mougins, FR)
Assignee: SAINT-GOBAIN CERAMICS & PLASTICS, INC.
C09K3/1409
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Quick Facts
Patent No.
US 12,305,108
App. No.
16/751,774
Granted
May 20, 2025
Kind
B2
Abstract

A method of forming a shaped abrasive particle includes having a body formed by an additive manufacturing process.

Claims (23)

1. A method of forming a fixed abrasive comprising:

forming a plurality of shaped abrasive particles on a substrate, wherein each of the shaped abrasive particles of the plurality of shaped abrasive particles have a body formed by an additive manufacturing process and the body consists essentially of alumina,

wherein each of the shaped abrasive particles is formed with a controlled orientation with respect to a vertical orientation, a rotational orientation, a flat orientation, or a side orientation,

wherein at least about 55% of the plurality of shaped abrasive particles are oriented in a side orientation.

2. The method of claim 1 , wherein forming is conducted directly overlying the substrate.

3. The method of claim 1 , wherein forming is conducted directly on at least a portion of a bonding layer overlying the substrate, wherein the bonding layer comprises a material selected from the group consisting of an inorganic material, a vitreous material, a crystalline material, an organic material, a resin material, a metal material, a metal alloy, and a combination thereof.

4. The method of claim 1 , wherein the substrate is translated through a forming zone, wherein in the forming zone at least one shaped abrasive particle of the plurality of shaped abrasive particles is formed overlying the substrate.

5. The method of claim 1 , wherein the additive manufacturing process comprises: depositing a first print material as a first portion of the body of each of the shaped abrasive particles of the plurality of shaped abrasive particles at a first time; and depositing a second print material as a second portion of the body of each of the shaped abrasive particles of the plurality of shaped abrasive particles at a second time different than the first time.

6. The method of claim 5 , further comprising modifying one of the first portion and second portion to join the first portion and second portion and form a subsection of the body of the shaped abrasive particle.

7. The method of claim 1 , wherein the plurality of shaped abrasive particles are formed at a predetermined location on the substrate.

8. The method of claim 1 , further comprising placing each of the shaped abrasive particles of the plurality of shaped abrasive particles on the substrate, wherein the placing is conducted simultaneously with forming the body of each of the shaped abrasive particles of the plurality of shaped abrasive particles.

9. The method of claim 1 , further comprising orienting each of the shaped abrasive particles of the plurality of shaped abrasive particles relative to the substrate.

10. The method of claim 9 , wherein orienting and forming are conducted simultaneously.

11. The method of claim 1 , wherein the plurality of shaped abrasive particles define an open coat.

12. The method of claim 11 , wherein the open coat comprises a coating density of not greater than about 70 particles/cm 2 .

13. The method of claim 1 , wherein the substrate comprises a material selected from the group consisting of cloth, paper, film, fabric, fleeced fabric, vulcanized fiber, woven material, non-woven material, webbing, polymer, resin, phenolic resin, phenolic-latex resin, epoxy resin, polyester resin, urea formaldehyde resin, polyester, polyurethane, polypropylene, polyimides, and a combination thereof.

14. The method of claim 1 , wherein the body comprises a polycrystalline material.

15. The method of claim 1 , further comprising placing each of the shaped abrasive particles of the plurality of shaped abrasive particles on the substrate, wherein the placing is conducted simultaneously with forming the body of each of the shaped abrasive particles of the plurality of shaped abrasive particles.

16. The method of claim 4 , wherein translation includes a stepped translation process.

17. The method of claim 1 , wherein orienting and forming are conducted simultaneously.

18. The method of claim 16 , wherein the stepped translation process comprises translating the substrate a particular distance and stopping the substrate to facilitate the formation of a shaped abrasive particle on the substrate.

19. The method of claim 18 , further comprising translating the substrate in a second direction by a particular distance and stopping the substrate to facilitate the formation of a second shaped abrasive particle at a particular location on the substrate.

20. The method of claim 1 , wherein the plurality of shaped abrasive particles have a body comprising a corner roundness of not greater than about 250 microns.

Continuity (4)
Continuation 15679427 · Aug 17, 2017
Continuation 14502562 · Sep 30, 2014
Provisional Application 61884474 · Sep 30, 2013
Related Publication 20200157397A1 · May 21, 2020
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