ABRASIVE ARTICLE HAVING A CORE OF AN ORGANIC MATERIAL AND A BONDED ABRASIVE BODY COMPRISING A BOND MATERIAL

• US 20140187129A1
• Filed: 12/30/2013
• Published: 07/03/2014
• Est. Priority Date: 12/31/2012
• Status: Abandoned Application

• 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: Sivasubramanian, Shivshankar, Ramanath, Srinivasan, Upadhyay, Rachana, Gillespie, John E., Dumas, Steven W., Smith, Robert N., Pytel, Rachel Z.
• Application Number:
  US14/144,028
• Publication Number:
  US 20140187129A1
• Time in Patent Office: Days
• US Class Current: 451/541
• CPC Class Codes: B24D 3/001 the constituent being used as supporting member
• CPC Class Codes: B24D 3/04 and being essentially inorganic
• CPC Class Codes: B24D 3/20 and being essentially organic
• CPC Class Codes: B24D 5/00 Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
• CPC Class Codes: B24D 5/066 with segments mounted axially one against the other
• CPC Class Codes: B24D 5/16 Bushings; Mountings

Abstract

An abrasive article includes a core comprising an organic material and a first bonded abrasive body integrally bonded directly to the core, wherein the bonded abrasive body includes a bond material, and abrasive particles contained within the bond material.

Claims

1. An abrasive article comprising:

a core comprising an organic material; and

a first bonded abrasive body integrally bonded directly to the core, the bonded abrasive body comprising;

a bond material comprising a hybrid material including an inorganic portion and an organic portion; and

abrasive particles contained within the bond material.

2. The abrasive article of claim 1, wherein the first bonded abrasive body is integrally bonded to a peripheral surface of the core.

3. The abrasive article of claim 1, wherein the core comprises a volume of at least about 75 in³ (1229 cm³).

4. The abrasive article of claim 1, wherein the core has a monolithic body, wherein the core has a cylindrical shape defined by a diameter (d), a circumference (C), and a height (h), wherein the height is at least about 3 inches (7.6 cm).

5. The abrasive article of claim 4, wherein the diameter is at least about 6 inches (15.2 cm).

6. The abrasive article of claim 1, wherein the core comprises an opening defining an arbor hole, wherein the opening is configured to engage a spindle for a grinding operation, wherein the opening extends through a volume of the monolithic body, wherein the opening extends along a direction of the height, wherein the opening extends between a first major surface and a second major surface of the core.

7. The abrasive article of claim 6, wherein the core comprises a liner overlying at least a portion of the surface defining the opening.

8. The abrasive article of claim 1, wherein the core consists essentially of the organic material.

9. The abrasive article of claim 1, wherein the organic portion and the inorganic portion are substantially uniformly distributed throughout the volume of the bond material of the first bonded abrasive body.

10. The abrasive article of claim 1, wherein the inorganic portion of the bond material comprises a metal material.

11. The abrasive article of claim 10, wherein the metal material of the bond material comprises a combination of copper and tin.

12. The abrasive article of claim 1, wherein the organic portion of the bond material comprises a polymer.

13. A method of forming an abrasive article, the method comprising:

preparing a preform comprising an abrasive article;

forming a mixture comprising a thermoset;

pouring the mixture into the preform; and

curing the mixture to form the core on the abrasive article, wherein the curing comprises a phase change of a liquid phase to a solid phase, the core having a cylindrical shape defined by a diameter (d), a circumference (C), and a height (h), wherein the height is at least about 3 inches (7.6 cm).

14. The method of claim 13, wherein the mixture includes a curing agent.

15. The method of claim 14, wherein the curing agent is selected from the group consisting of an oligoamine, a diol, a dithiol, an amino alcohol, an amino thiol, a thioalcohol, and any combination thereof.

16. The method of claim 15, wherein the oligoamine is selected from the group consisting of an aliphatic oligoamine, a cycloaliphatic oligoamine, and an aromatic oligoamine, and a combination thereof.

17. The method of claim 16, wherein the aliphatic oligoamine is selected from the group consisting of ethylene diamine, 2-methyl-1,5-pentamethylenediamine, 1,6-hexamethylenediamine, 1,3-pentanediamine, (2-aminoethyl)-1,2-ethanediamine (DETA), N,N′

-bis-(2-aminoethyl)-1,2-ethanediamine) (TETA), tris-(2-aminoethyl)amine) (TAEA), bis-(aminoethyl)ether, a polyether diamine, tetraethylenepentamine (TEPA), and a combination thereof.

18. The method of claim 13, wherein the mixture includes an epoxy resin and the curing agent includes an oligoamine.

19. The method of claim 18, wherein the epoxy resin includes a bisphenol-A diglycidyl ether and the curing agent includes a isophorone diamine.

20. An abrasive article, comprising:

a first bonded abrasive body comprising;

a bond material comprising a hybrid material including an inorganic portion and an organic portion; and

abrasive particles contained within the bond material; and

a core comprising an organic material and bonded to the first bonded abrasive body, the core having a monolithic body including a cylindrical shaped defined by a diameter (d), a circumference (C), and a height (h), wherein the height is at least about 3 inches (7.6 cm);

wherein the core comprises at least one filler selected from the group consisting of oxides, carbides, borides, silicides, nitrides, fluorides, oxynitrides, oxycarbides, silicates, metal-hydrate compounds, hydrated oxide compounds, carbonates, phosphates, minerals, feldspar, nepheline syenite, chromites, magnesites, dolomites, pyrites, sulfides, carbon-based materials, graphite, sulfides, silicon, metal, metal alloys, inter-metallics, ceramics, hollow-ceramics, fused silica, glass, glass-ceramics, hollow glass spheres, glass fibers, polymers, polyimides, polyamides, resins, aramids, epoxies, polyesters, polyurethanes, acetates, celluloses, ethers, ethanol, wood flour, clay, talc, and a combination thereof.