Method and device for machining the internal surface of a tubular part and in particular an adapter fixed to the cover of the vessel of a pressurized water nuclear reactor.

摘要

A jet of abrasive liquid is directed at high speed towards the surface of the workpiece (13) with an angle of incidence between 30 and 90 degrees. The jet is moved so as to sweep the internal surface of the part (13). At least two successive machining passes are made. The scanning speed increases from one machining pass to the next. The device (30) mounted movable in translation and in rotation inside the adapter (13) consists of a tubular assembly supplied with pressurized liquid to which a nozzle (33) is fixed.