公开(公告)号：US20190076856A1

公开(公告)日：2019-03-14

申请号：US16067084

申请日：2015-12-29

Applicant: ArcelorMittal

Inventor： Sheila DIAZ VAQUERO ,  Juan José FERNANDEZ LOPEZ

IPC: B05B1/20 ,  B05B1/00

Abstract: An air nozzle for guiding a cut steel strip at the exit from a shearing device for a moving steel sheet is provided. The nozzle is made in one piece and extends along a main plane perpendicular to the direction of movement of the steel strip. The air nozzle includes an air inlet channel with a free end connected to a compressed air generator and an opposite end divided at a deflection junction into a first and a second air discharge channel facing each other on either side of the main plane. The free end of the first air discharge channel is located close to the exit and includes a plurality of first air discharge orifices orientated towards the second air discharge channel. The free end of the second air discharge channel includes a plurality of second air discharge orifices orientated either in the opposite direction to the first air discharge channel or parallel to the main plane so none of the first and second air discharge orifices are orientated in the opposite direction to the direction of movement of the steel sheet.

公开(公告)号：US20190024978A1

公开(公告)日：2019-01-24

申请号：US16067240

申请日：2016-12-27

Applicant: ArcelorMittal

Inventor： Sheila DIAZ VAQUERO ,  Juan Jose FERNANDEZ LOPEZ

IPC: F27D3/15 ,  C21B7/12 ,  B22F3/105

Abstract: A drill bit for improving performance of a drilling machine is provided. The drill bit includes a drill bit body with a rear end adapted to be connected to a drilling machine, and a leading end with a flat face perpendicular to a longitudinal axis (X-X) of the drill bit body. The drill bit body includes a first tapered portion with diameters increasing from the flat face of the leading end to a maximum diameter (Dmax), a second tapered portion with diameters decreasing from the maximum diameter (Dmax) to the rear end of the drill body, at least three partly-circular recesses formed in the drill bit body thus delimitating as many tapered drilling faces, each of them extending from the flat face of the leading end to the maximum diameter (Dmax). The flat face and the tapered drilling faces have a plurality of protruding teeth and the teeth are cylindrical and have a longitudinal axis (Y-Y) forming an angle with the face supporting the teeth which is less than or equal to 90°.