Abrasive tools and methods of forming the same

Patent metadata

Field	Value
Publication number	US-9242345-B2
Application number	US-201414303348-A
Country	US
Kind code	B2
Filing date	Jun 12, 2014
Priority date	Jun 15, 2013
Publication date	Jan 26, 2016
Grant date	Jan 26, 2016

Abstract

An abrasive tool is provided that may include a body, which may include abrasive particles contained within a bond material. The abrasive particles may be a super abrasive material. The body may further include at least one of a ratio of tungsten to cast iron (W/CI) of not greater than about 1, a ratio of copper-containing compositions to cast iron (CCC/CI) of not greater than about 1, a ratio of titanium-containing compositions to cast-iron (TiCC/CI) of not greater than about 1, a ratio of tungsten carbide to cast iron (WC/CI) of not greater than about 1, a ratio of tungsten carbide to copper-containing compositions (WC/CCC) of not greater than about 1, a ratio of copper-containing compositions and titanium-containing compositions to cast iron ((CCC+TiC)/CI) of not greater than about 1.5 or a combination thereof.

First claim

What is claimed is:

1. An abrasive tool comprising:
a body including:
abrasive particles comprising a superabrasive material contained within a bond material;
an active bonding agent comprising a titanium-containing composition contained within the bond material;
at least about 25 wt. % cast iron for a total weight of the bond material; and
at least one of:
a ratio of tungsten to cast iron [W/CI] of not greater than about 1;
a ratio of copper-containing compositions to cast iron [CCC/CI] of not greater than about 1;
a ratio of titanium-containing compositions to cast iron [TiCC/CI] of not greater than about 1;
a ratio of tungsten carbide to cast iron [WC/CI] of not greater than about 1;
a ratio of tungsten carbide to copper-containing compositions [WC/CCC] of not greater than about 1;
a ratio of copper-containing compositions and titanium-containing compositions to cast iron [(CCC+TiC)/CI] of not greater than about 1.5; and
a combination thereof.

2. The abrasive tool of claim 1 , wherein the body further comprises comprising a ratio of nickel to cast iron [Ni/CI] of not greater than about 1.

3. The abrasive tool of any one of claim 1 , wherein the body further comprises a ratio of chromium to cast iron [Cr/CI] of not greater than about 1.

4. The abrasive tool of any one of claim 1 , wherein the body further comprises a ratio of titanium-containing compositions to abrasive particles [TiCC/AP] of not greater than about 1.

5. The abrasive tool of claim 1 , wherein the body further comprises a ratio of cast iron to abrasive particles [CI/AP] of not greater than about 1.

6. The abrasive tool of any one of claim 1 , wherein the body comprises a first titanium-containing composition preferentially located adjacent to the cast iron and a second titanium-containing composition preferentially located adjacent to the abrasive particles.

7. The abrasive tool of claim 1 , wherein the body comprises not greater than about 10 wt. % titanium-containing compositions for a total weight of the bond material.

8. The abrasive tool of any one of claim 1 , wherein the body comprises not greater than about 10 wt. % tungsten for a total weight of the bond material.

9. The abrasive tool of claim 1 , wherein the body comprises not greater than about 50 wt. % copper-containing compound for a total weight of the bond material.

10. The abrasive tool of claim 1 , wherein the copper-containing compound comprises elemental copper.

11. The abrasive tool of claim 1 , wherein the body comprises not greater than about 50 wt. % elemental copper for a total weight of the bond material.

12. The abrasive tool of claim 1 , wherein the body comprises not greater than about 20 wt. % tin for a total weight of the bond material.

13. The abrasive tool of claim 1 , wherein the cast iron comprises not greater than about 5 wt. % chromium for a total weight of the cast iron.

14. The abrasive tool of claim 1 , wherein the body comprises not greater than about 10 wt. % chromium for the total weight of the bond material.

15. A method of forming an abrasive tool comprising:
providing a mixture comprising:
a bond material;
abrasive particles comprising a superabrasive material;
an active bonding agent comprising a titanium-containing compositions;
at least about 25 wt. % cast iron for a total weight of the bond material; and
at least one of:
a ratio of tungsten to cast iron [W/CI] of not greater than about 1;
a ratio of copper-containing compositions to cast iron [CCC/CI] of not greater than about 1;
a ratio of titanium-containing compositions to cast iron [TiCC/CI] of not greater than about 1;
a ratio of tungsten carbide to cast iron [WC/CI] of not greater than about 1;
a ratio of tungsten carbide to copper-containing compositions [WC/CCC] of not greater than about 1;
a ratio of copper-containing compositions and titanium-containing compositions to cast iron [(CCC+TiC)/CI] of not greater than about 1.5; and
a combination thereof; and

forming the mixture into the abrasive tool.

16. The method of forming an abrasive tool of claim 15 , wherein the body further comprises a ratio of titanium-containing compositions to abrasive particles [TiCC/AP] of not greater than about 1.

17. The method of forming an abrasive tool of claim 15 , wherein the body further comprises a ratio of cast iron to abrasive particles [CI/AP] of not greater than about 1.

18. The method of forming an abrasive tool of claim 15 , wherein the body comprises a first titanium-containing composition preferentially located adjacent to the cast iron and a second titanium-containing composition preferentially located adjacent to the abrasive particles.

19. The method of forming an abrasive tool of claim 15 , wherein the copper-containing compound comprises elemental copper.

20. The method of forming an abrasive tool of claim 15 , wherein the cast iron comprises not greater than about 5 wt. % chromium for a total weight of the cast iron.

Assignees

• Saint Gobain Abrasives Inc
• Saint Gobain Abrasifs Sa

Inventors

• Roy Debdutta
• Ramanath Srinivasan
• Tunstall John
• Upadhyay Rachana
• Khaund Arup K

Classifications

• B24D3/06 Primary

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