IMPROVED PROCESS FOR GROOVE MILLING AND STEP MILLING ON ROOT OF 250 MW, T4-25, BAR TYPE , STEAM TURBINE BLADE USING FIXTURE WITH NEW DEVELOPED CLAMP.

摘要

The invention relates to an improved process for groove milling and step milling on root of 250 mw, T4-25 bar type steam turbine blade by clamping with a newly developed clamp.The arrangement comprises holding and clamping the blade by the device,locating the blade from the root side by support location and performing the operation groove milling and step milling of root.