公开(公告)号：US20180216451A1

公开(公告)日：2018-08-02

申请号：US15527787

申请日：2015-11-19

Applicant: SANDVIK MINING AND CONSTRUCTION OY

Inventor： Miika HUIKKOLA ,  Tuomo PIRINEN ,  Jussi PUURA ,  Vesa UITTO

IPC: E21B44/08 ,  E21B1/00

CPC classification number: E21B44/08 ,  E21B1/00 ,  E21B7/02 ,  E21B44/00 ,  G05B2219/45129

Abstract: A control system for a percussive drilling apparatus, the control system including a control unit for controlling machine control level operations of the percussive drilling apparatus, one or more machine control nodes connected to the control unit via a control bus, the machine control nodes providing at least one output from one or more sensors of the percussive drilling apparatus, and a measurement-while-drilling analysis functionality arranged to operate at the machine control level. The measurement-while-drilling analysis functionality being arranged to obtain measurement data of the one or more sensors from the one or more machine control nodes via the control bus and to carry out a measurement-while-drilling analysis of a drilling process.

公开(公告)号：US20180010439A1

公开(公告)日：2018-01-11

申请号：US15643098

申请日：2017-07-06

Applicant: SANDVIK MINING AND CONSTRUCTION OY

Inventor： Noora KALEVO ,  Vesa UITTO ,  Tuomo PIRINEN ,  Antti KOSKIMAKI

IPC: E21B47/00 ,  E21B1/00 ,  E21B7/02 ,  E21B6/02

Abstract: A component for a rock breaking system is magnetized into a state of remanent magnetization. The remanent magnetization of the component has a predetermined varying magnetization profile relative to geometry of the component, the varying magnetization profile describing varying magnetization intensity in the component relative to the geometry of the component.