Global Patent Index - EP 1033414 A2

EP 1033414 A2 2000-09-06 - Corrosion resistant polycrystalline abrasive compacts

Title (en)

Corrosion resistant polycrystalline abrasive compacts

Title (de)

Korrosionsbeständige polykristalline Schleifpresskörper

Title (fr)

Korrosionsbeständige polykristalline Schleifpresskörpern

Publication

EP 1033414 A2 (EN)

Application

EP 00301474 A

Priority

US 25895499 A

Abstract (en)

A supported abrasive particle compact is composed of a cobalt-cemented carbide support integrally bonded to an abrasive particle layer of self-bonded diamond particles or CBN particles. The cobalt content in said supported compact is provided in form of a nickel-cobalt alloy wherein the amount of nickel is such that the cobalt is present in the face center cubic (FCC) or e phase. The inventive cutters can be made by infiltration of Ni metal into cemented WC substrate and/or the polycrystalline layer bonded thereto. Bonding includes high pressure/high temperature (HP/HT) formation of the supported polycrystalline compact and the brazing of the polycrystalline compact to the support. <IMAGE>

IPC 1-7 (main, further and additional classification)

C22C 29/06; B22F 7/06

IPC 8 full level (invention and additional information)

B24D 3/00 (2006.01); B22F 7/06 (2006.01); B24D 3/34 (2006.01)

CPC (invention and additional information)

B22F 7/06 (2013.01); B24D 3/34 (2013.01); B24D 3/342 (2013.01); B22F 2005/001 (2013.01)

Designated contracting state (EPC)

BE DE FR GB IE IT

EPO simple patent family

EP 1033414 A2 20000906; EP 1033414 A3 20020918; JP 2000246645 A 20000912; ZA 200000781 B 20000913

INPADOC legal status


2004-03-31 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20030924

2003-06-25 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20030513

2003-06-04 [AKX] PAYMENT OF DESIGNATION FEES

- Designated State(s): BE DE FR GB IE IT

2003-05-14 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20030318

2002-09-18 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A3

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2002-09-18 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL;LT;LV;MK;RO;SI

2002-09-11 [RIC1] CLASSIFICATION (CORRECTION)

- Free text: 7C 22C 29/06 A, 7C 22C 29/08 B, 7C 22C 29/10 B, 7B 22F 7/06 B

2000-09-06 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2000-09-06 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL;LT;LV;MK;RO;SI