The plane of the base of the propeller (Wartsila, Azipod, etc.) requires high machining accuracy, complex process, and large welding deformation on the site after the flange surface is processed in the workshop, which makes the on-site precision machining very necessary. The processing technology includes plane milling, inner hole milling, sealing ring groove processing, etc., so the equipment accuracy and personnel technical requirements are quite high.

On-site processing process                          Finished processing