Grinding roller and method for the reconditioning thereof

Method for reconditioning a used milling roller of a high-pressure material bed roller mill, containing a plurality of profile-members which are embedded with a portion of the length thereof in holes of the roller body and, with the remainder of the length thereof, protrude above the surface of the roller body, with the holes (12, 13, 14) in differently loaded part-regions of the width of the roller body (1) having different depths and the profile-members (2, 3, 4) having different lengths when the milling roller is new, and the protruding portion of the profile-members and the surface of the roller body being at least partially worn when the milling roller is in the used state,

• characterised by the following method steps:
• a) at least in a part-region of the width of the roller body, the worn surface (1′a) of the roller body is turned, after the worn profile-members (2′, 3′) which are located in that part-region have been removed, to such an extent that the desired shape of the surface (1′b) is produced again;
• b) subsequently, the holes (12′, 13′) in the turned part-region of the roller body are made deeper to such an extent that they can again receive profile-members (2″, 3″);
• c) subsequently, at least some of the partially worn profile-members of another part-region of the roller body that is involved in the reconditioning operation and/or new profile-members are introduced into those deepened holes.

Method for reconditioning a used milling roller of a high-pressure material bed roller mill, containing a plurality of profile-members which are embedded with a portion of the length thereof in holes of the roller body and, with the remainder of the length thereof, protrude above the surface of the roller body, with

• the holes (12, 13, 14) in differently loaded part-regions of the width of the roller body (1) having different depths when the milling roller is new, the holes (12, 13) in the peripheral regions of the width of the roller body (1) having a depth which is also still sufficient to receive profile-members (2″, 3″) when those peripheral regions are worn, and the profile-members (2, 3, 4) having different lengths,
• and the protruding portion of the profile-members and the surface of the roller body being at least partially worn when the milling roller is in the used state,
• characterised by the following method steps:
• a) the worn surface (1′a) of the roller body is turned, at least in the peripheral regions of the width of the roller body after the worn profile-members (2′, 3′) which are in those regions have been removed, to such an extent that the desired shape of the surface (1′b) is produced again;
• b) subsequently, profile-members (2″, 3″) whose length is smaller than the length of the profile-members (2, 3) which are provided in the new state are introduced into the holes of those peripheral regions.