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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 10597744 B1

PDFFull Text
Date of Patent:
Mar. 24, 2020

Filed:

May. 18, 2016

Method for treating toughness and hardness of drill bit buttons

Applicant:

Atlas Copco Secoroc Ab, Fagersta, SE;

Inventors:

Tomas Rostvall, Stockholm, SE;

Pär Sundqvist, Fagersta, SE;

Thomas Andersson, Stockholm, SE;

Assignee:

EPIROC DRILLING TOOLS AKTIEBOLAG, Fagersta, SE;

Attorneys:

Venable LLP

Jeffri A. Kaminski

Primary Examiner:

Timothy V Eley

Int. Cl.
CPC ...
C21D 9/22 (2006.01); B24B 31/108 (2006.01); B24C 1/08 (2006.01); B24B 31/02 (2006.01); B08B 3/04 (2006.01); B08B 7/02 (2006.01); B24B 31/03 (2006.01); B24B 31/023 (2006.01); C22C 1/10 (2006.01); C22C 29/08 (2006.01); C22C 29/14 (2006.01); C22F 1/10 (2006.01); C22C 26/00 (2006.01); C21D 7/04 (2006.01);
U.S. Cl.
CPC ...
C21D 9/22 (2013.01); B08B 3/044 (2013.01); B08B 7/02 (2013.01); B24B 31/02 (2013.01); B24B 31/023 (2013.01); B24B 31/03 (2013.01); B24B 31/108 (2013.01); B24C 1/08 (2013.01); C22C 1/1094 (2013.01); C22C 29/08 (2013.01); C22C 29/14 (2013.01); B22F 2998/10 (2013.01); C21D 7/04 (2013.01); C22C 26/00 (2013.01); C22F 1/10 (2013.01);
Abstract

A method, performed by a centrifuge, for treating toughness and hardness of drill bit buttons is provided. The centrifuge comprises a chamber formed by a stationary side wall and a bottom which is rotatable around a rotation axis, the bottom comprising one or more protrusions which at least partly extends between the rotation axis and the side wall, the side wall comprising at least six pushing elements arranged around a periphery of the side wall. The method comprises rotating, by rotation of the bottom with the protrusions, the drill bit buttons around the rotation axis, pushing, by the pushing elements, the drill bit buttons from the side wall during the rotation of the bottom, collectively forming the drill bit buttons into a torus shape at the bottom of the chamber for inducing collisions between the drill bit buttons, thereby treating the toughness and hardness of the drill bit.

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