Method and device for machining by flame by oxygen-cutting torch to dispose of the cracks in the case of slabs in an installation the steel mill.

摘要

This device comprises a cutting torch (2) for scarfed a slab (3) having a longitudinal crack (4), the torch (2) being suitably inclined to the vertical, and on the vertical axial plane of the crack; the device is equipped with a nozzle (6) of the projection of a sheet of water (7) to high pressure, associated with the torch (2), inclined with respect to the vertical and on the vertical axial plane of the crack (4) of angles, such as the blade (7) passes to the - the top of the flame (1) of the torch (2) and strikes the slab (3) in the bath (8) of oxygen-cutting. The present invention makes it possible to prevent the formation of the burr usually generated on the edges of the trace of the flame (1) of the torch (2), and which, up to now, must be removed manually