B - Operations – Transporting – 23 – K
Patent
B - Operations, Transporting
23
K
164/3, 327/1.1
B23K 7/06 (2006.01)
Patent
CA 1071525
ABSTRACT OF THE DISCLOSURE This invention relates to a method and a device for causing ignition in a gas planing process, for removing work- piece defects in a steel rolling mill. The method is based on applying heat to a workpiece by means of a movable heat source, which has a point effect so that the heated or molten portion of the workpiece forms a strip which extends perpendicularly to the flow direction of the planing oxygen. The device for carrying out the method comprises one or more planing burners and one or more movable ignition means so connected to the burner that the ignition means can move relative to the planing burner both in parallel with and perpendicularly to the planing direction and at the same time carry out the function of a heat source of point shape, which preheats a strip-shaped zone on the surface of the workpiece and/or in addition to said preheating adds molten metal to said zone.
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