公开(公告)号：CA2693265C

公开(公告)日：2012-03-20

申请号：CA2693265

申请日：2000-06-08

Applicant: SMITH INTERNATIONAL

Inventor： TRAUX DAVID K ,  OLDHAM THOMAS WALTER ,  VAN WAES DUANE R ,  PENUEL CARL EDWARD

IPC: E21B10/567 ,  B22F7/06 ,  B23P15/28 ,  E21B10/42 ,  E21B10/43 ,  E21B10/46

Abstract: An earth-boring bit comprises a bit body bit body in which are mounted a plurality of cutting structures inserts, wherein at least a portion of the cutting structures comprise diamond--impregnated inserts having a total thermal exposure of less than 25 minutes above 1500°F. The diamonds can be natural or synthetic diamond. The bit body itself may be diamond-impregnated, in which case it is preferred that the diamonds in the inserts make up at least 40% of the total diamond in the bit.

公开(公告)号：CA2311020A1

公开(公告)日：2000-12-30

申请号：CA2311020

申请日：2000-06-08

Applicant: SMITH INTERNATIONAL

Inventor： VAN WAES DUANE R ,  PENUEL CARL EDWARD ,  TRUAX DAVID K ,  OLDHAM THOMAS WALTER

IPC: B22F7/06 ,  E21B10/42 ,  E21B10/43 ,  E21B10/46

Abstract: An earth-boring bit comprises a bit body bit body in which are mounted a plurality of cutting structures inserts, wherein at least a portion of the cutting structures comprise diamond-impregnated inserts having a total thermal exposure of less than 25 minutes above 1500.degree.F. The diamonds can be natural or synthetic diamond. The bit body itself may be diamond-impregnated, in which case it is preferred that the diamonds in the inserts make up at least 40% of the total diamond in the bit.

公开(公告)号：CA2311020C

公开(公告)日：2007-11-06

申请号：CA2311020

申请日：2000-06-08

Applicant: SMITH INTERNATIONAL

Inventor： VAN WAES DUANE R ,  OLDHAM THOMAS WALTER ,  TRUAX DAVID K ,  PENUEL CARL EDWARD

IPC: E21B10/46 ,  B22F7/06 ,  E21B10/42 ,  E21B10/43

Abstract: An earth-boring bit comprises a bit body bit body in which are mounted a plurality of cutting structures inserts, wherein at least a portion of the cutting structures comprise diamond--impregnated inserts having a total thermal exposure of less than 25 minutes above 1500.degree.F. The diamonds can be natural or synthetic diamond. The bit body itself may be diamond-impregnated, in which case it is preferred that the diamonds in the inserts make up at least 40% of the total diamond in the bit.

公开(公告)号：SG72294G

公开(公告)日：1994-10-28

申请号：SG72294

申请日：1994-06-03

Applicant: SMITH INTERNATIONAL

Inventor： KESHAVAN MADAPUSI KANDE ,  UNDERWOOD LANCE DOUGLAS ,  KAR NARESH JITENDRA ,  OLDHAM THOMAS WALTER ,  ROTH CARY ALLEN ,  ARMSTRONG BRIAN JOHN

IPC: B23K35/32 ,  C22C29/08 ,  E21B10/50

公开(公告)号：NO885775A

公开(公告)日：1989-06-30

申请号：NO885775

申请日：1988-12-27

Applicant: SMITH INTERNATIONAL

Inventor： KESHAVAN MADAPUSI KANDE ,  UNDERWOOD LANCE DOUGLAS ,  KAR NARESH JITENDRA ,  OLDHAM THOMAS WALTER ,  ROTH CARY ALLEN ,  ARMSTRONG BRIAN JOHN

IPC: B23K35/12 ,  B23K35/32 ,  C22C29/08 ,  E21B10/50 ,  E21B10/52 ,  B23K31/04 ,  C01B31/34 ,  C23C30/00

CPC classification number: E21B10/50 ,  B23K35/327 ,  C22C29/08 ,  Y10T428/1209

公开(公告)号：CA2584928C

公开(公告)日：2010-08-10

申请号：CA2584928

申请日：2000-06-08

Applicant: SMITH INTERNATIONAL

Inventor： TRUAX DAVID K ,  OLDHAM THOMAS WALTER ,  VAN WAES DUANE R ,  PENUEL CARL EDWARD

IPC: E21B10/46 ,  B22F7/06

Abstract: An earth-boring bit comprises a bit body bit body in which are mounted a plurality of cutting structures inserts, wherein at least a portion of the cutting structures comprise diamond--impregnated inserts having a total thermal exposure of less than 25 minutes above 1500°F. The diamonds can be natural or synthetic diamond. The bit body itself may be diamond-impregnated, in which case it is preferred that the diamonds in the inserts make up at least 40% of the total diamond in the bit.

公开(公告)号：DE60002795T9

公开(公告)日：2004-09-09

申请号：DE60002795

申请日：2000-08-11

Applicant: SMITH INTERNATIONAL

Inventor： KEMBAIYAN KUTTARIPALAYAM T ,  OLDHAM THOMAS WALTER

IPC: B22F7/06 ,  C22C29/06 ,  E21B10/00 ,  C22C29/08

Abstract: A composite structural metal use, for example, in drill bit bodies is disclosed. The metal includes powdered tungsten carbide, and binder metal consisting of a composition by weight of manganese in a range of about zero to 25 percent, nickel in a range of about zero to 15 percent, zinc in a range of about 3 to 20 percent, tin in a range of more than 1 percent to about 10 percent, and copper making up about 24 to 96 percent by weight of the composition. In one embodiment, the composition includes about 6 to 7 percent tin therein. In another embodiment, the composition includes about 0-6 percent by weight of cobalt.

公开(公告)号：DE60002795D1

公开(公告)日：2003-06-26

申请号：DE60002795

申请日：2000-08-11

Applicant: SMITH INTERNATIONAL

Inventor： KEMBAIYAN KUTTARIPALAYAM T ,  OLDHAM THOMAS WALTER

IPC: B22F7/06 ,  C22C29/06 ,  E21B10/00 ,  C22C29/08

Abstract: A composite structural metal use, for example, in drill bit bodies is disclosed. The metal includes powdered tungsten carbide, and binder metal consisting of a composition by weight of manganese in a range of about zero to 25 percent, nickel in a range of about zero to 15 percent, zinc in a range of about 3 to 20 percent, tin in a range of more than 1 percent to about 10 percent, and copper making up about 24 to 96 percent by weight of the composition. In one embodiment, the composition includes about 6 to 7 percent tin therein. In another embodiment, the composition includes about 0-6 percent by weight of cobalt.

公开(公告)号：NO885775D0

公开(公告)日：1988-12-27

申请号：NO885775

申请日：1988-12-27

Applicant: SMITH INTERNATIONAL

Inventor： KESHAVAN MADAPUSI KANDE ,  UNDERWOOD LANCE DOUGLAS ,  KAR NARESH JITENDRA ,  OLDHAM THOMAS WALTER ,  ROTH CARY ALLEN ,  ARMSTRONG BRIAN JOHN

IPC: B23K35/12 ,  B23K35/32 ,  C22C29/08 ,  E21B10/50 ,  E21B

Abstract: A hard facing for teeth on a milled tooth rock bit comprises at least 65% by weight of a mixture of tungsten carbide particles and a balance of steel bonding the carbide particles together and to the cutter cone of the rock bit. The tungsten carbide particle mixture comprises from 35% to 80%, and preferably from 65% to 80%, by weight 20 to 30 mesh cemented tungsten carbide, and from 20% to 65%, and preferably from 20% to 35% by weight 40 to 80 mesh single crystal monotungsten carbide.

公开(公告)号：CA2693265A1

公开(公告)日：2000-12-30

申请号：CA2693265

申请日：2000-06-08

Applicant: SMITH INTERNATIONAL

Inventor： TRAUX DAVID K ,  OLDHAM THOMAS WALTER ,  VAN WAES DUANE R ,  PENUEL CARL EDWARD

IPC: E21B10/567 ,  B22F7/06 ,  B23P15/28 ,  E21B10/42 ,  E21B10/43 ,  E21B10/46

Abstract: An earth-boring bit comprises a bit body bit body in which are mounted a plurality of cutting structures inserts, wherein at least a portion of the cutting structures comprise diamond--impregnated inserts having a total thermal exposure of less than 25 minutes above 1500°F. The diamonds can be natural or synthetic diamond. The bit body itself may be diamond-impregnated, in which case it is preferred that the diamonds in the inserts make up at least 40% of the total diamond in the bit.