Bit leg and cone hardfacing for earth-boring bit

Details Bit leg and cone hardfacing for earth-boring bit Bit leg and cone hardfacing for earth-boring bit

E - Fixed Constructions

21

B

E21B 10/16 (2006.01) B22F 7/06 (2006.01) B23K 35/32 (2006.01) C23C 30/00 (2006.01) E21B 10/50 (2006.01) E21B 10/52 (2006.01)

Patent

CA 2601196

An earth-boring bit has a bit body, and a bit leg depending from the bit body with a circumferentially extending outer surface, a leading side and a trailing side. A cone is rotatably mounted on a cantilevered bearing shaft depending inwardly from the bit leg. A first layer of a hardfacing composition of carbide particles dispersed in a nickel-based matrix is formed on the bit leg. A second layer of a hardfacing composition of carbide particles dispersed in an iron-based matrix that is formed on the cone. The first layer of hardfacing is applied by conveying carbide particles in a nickel-based matrix through a pulsed plasma transferred arc process. The second layer of hardfacing is applied with a torch and a hardfacing tube comprising carbide particles held within an iron-based tube.

L'invention concerne un outil de forage du sol comprenant un corps de forage, et une jambe de l'outil, dépendant du corps de l'outil et comprenant une surface extérieure s'étendant de manière circulaire, un côté avant et un côté arrière. Un cône est monté rotatif sur une tige support faisant saillie, à l'intérieur de la jambe de l'outil. Une première couche d'une composition de rechargement des particules de carbure dispersées dans une matrice à base de nickel est formée sur la jambe de l'outil. Une seconde couche d'une composition de rechargement de particules de carbure dispersées dans une matrice à base de fer est formée sur le cône. La première couche de rechargement est appliquée grâce au transport des particules de carbure dans une matrice à base de nickel à travers un processus à arc pulsé à transfert de plasma. La seconde couche de rechargement est appliquée au moyen d'une torche et d'un tube de rechargement comprenant des particules de carbure maintenues à l'intérieur d'un tube à base de fer.

Affiliated with

Also associated with

Rating

Bit leg and cone hardfacing for earth-boring bit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Bit leg and cone hardfacing for earth-boring bit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bit leg and cone hardfacing for earth-boring bit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1599440