Metal bond and metal bonded abrasive articles

• US 5,385,591 A
• Filed: 09/29/1993
• Issued: 01/31/1995
• Est. Priority Date: 09/29/1993
• Status: Expired due to Term

• Current Assignee: Norton Company (Compagnie De Saint-Gobain)
• Original Assignee: Norton Company (Compagnie De Saint-Gobain)
• Inventors: Ramanath, Srinivasan, Williston, William H.
• Primary Examiner(s): Bell, Mark L.
• Assistant Examiner(s): JONES, DEBORAH D
• Application Number:
  US08/128,399
• Time in Patent Office: 489 Days
• Field of Search: 51/293, 51/295, 51/309, 428/546
• US Class Current: 51/309
• CPC Class Codes: B24D 3/06 metallic or mixture of metals with ceramic materials, e.g. hard metals, "cermets", cements
• CPC Class Codes: B24D 3/34 characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties
• CPC Class Codes: C22C 26/00 Alloys containing diamond or cubic or wurtzitic boron nitride, fullerenes or carbon nanotubes
• CPC Class Codes: Y10T 428/12014 having metal particles

Abstract

The present invention is a metal bond comprising a filler with a Vickers hardness from about 300 kg/mm² to about 800 kg/mm² wherein the Vickers hardness of the filler is maintained above 300 kg/mm² upon firing of the bond at a temperature above 700° C. for at least about 10 minutes. The present invention further is an abrasive tool comprising a metal core; an abrasive composition comprising diamond and the above metal bond, bonded to the metal core.

Claims

1. An abrasive tool comprising:

a metal core; and

an abrasive composition comprising diamond and a metal bond bonded to the metal core, the metal bond comprising a filler wherein the hardness of the filler is maintained above about 300 kg/mm² upon firing of the bond at a temperature of above 700°

C. for at least about 10 minutes.

2. The abrasive tool in claim 1, wherein the filler has a Vickers hardness from about 300 kg/mm² to about 800 kg/mm² before firing of the bond.

3. The abrasive tool in claim 1, wherein the metal core is steel.

4. The abrasive tool in claim 1, wherein the abrasive composition comprises from about 5 to about 50 volume % of the diamond and from about 50 to about 95 volume % of the metal bond.

5. The abrasive tool in claim 1, wherein the filler is steel.

6. The abrasive tool in claim 5, wherein the steel filler has a composition of about 5.1 wt % Co, 4.1 wt % Cr, 4.9 wt % V, 12.2 wt % W, 0.34 wt % Mn, 0.24 wt % Si, 1.43 wt % C, 0.02 wt % S, and a balance of Fe.

7. The abrasive tool in claim 1, wherein the hardness of the filler is maintained above about 300 kg/mm² upon firing of the bond at a temperature of above 750°

C. for at least about 10 minutes.

8. The abrasive tool in claim 7, wherein the hardness of the filler is maintained above about 300 kg/mm² upon firing of the bond at a temperature of above 800°

C. for at least about 10 minutes.

9. A bond comprising a filler wherein the filler is maintained above 300 kg/mm² upon firing of the bond at a temperature above 700°

C. for at least about 10 minutes.

10. The bond in claim 9, wherein the filler has a Vickers hardness of from about 300 kg/mm² to about 800 kg/mm² before firing of the bond.

11. The bond in claim 9, wherein the filler is steel.

12. The bond in claim 11, wherein the steel filler has a composition of about 5.1 wt % Co, 4.1 wt % Cr, 4.9 wt % V, 12.2 wt % W, 0.34 wt % Mn, 0.24 wt % Si, 1.43 wt % C, 0.02 wt % S, and a balance of Fe.

13. The bond in claim 9, wherein the hardness of the filler is maintained above about 300 kg/mm² upon firing of the bond at a temperature of above 750°

C. for at least about 10 minutes.

14. The bond in claim 13, wherein the hardness of the filler is maintained above about 300 kg/mm² upon firing of the bond at a temperature of above 800°

C. for at least about 10 minutes.