Method and arrangement for crack removal

An arrangement for removing a crack in a metallic material during a hot metal making process comprising:

• a crack detecting unit including a transmitter coil and at least one receiver coil,
• a crack removal unit arranged at a known distance from the crack detecting unit, the crack removal unit including at least one ejector configured to eject a carving means and to vary the intensity of the ejected carving means,
• a control unit configured to feed a current to the transmitter coil according to a known schema for generating a magnetic field in the metallic material, detect the magnetic field by means of the receiver coil to generate a signal, and process the generated signal to establish the presence of a crack and its crack depth, wherein upon detection of a crack during the metal making process, the control unit is configured to send a crack detection signal and crack depth to the crack removal unit for activating the ejector to remove the crack, and setting the intensity of the ejected carving means based on at least the crack depth.