METHOD FOR PRODUCING A TURBINE ROTOR

摘要

A method of producing a turbine rotor, in particular a steam turbine rotor, is provided. A forged and machined existing steam turbine rotor having partially larger dimensions as dimensions of an intended rotor is provided. The form of the existing rotor is compared with the form of the intended rotor and a position of the intended rotor within the existing rotor is chosen. Material is applied by build-up welding on portions of the existing rotor where not enough material is present for machining the intended rotor at the chosen position. The intended rotor is produced at the chosen position by machining the existing rotor.

主权项

1. Method for producing a turbine rotor out of an existing forged and machined steam turbine rotor, comprising:
a) providing a form of the turbine rotor to be produced as an intended rotor, and providing a form of the existing rotor; b) positioning the intended rotor form with said existing rotor form such that portions of said existing rotor form are larger than dimensions of the intended rotor form, and comparing the intended rotor form with said existing rotor form to determine what portions of the existing rotor are not dimensioned larger than the intended rotor; c) applying material, via build-up welding, on portions of said existing rotor not dimensioned larger than the intended rotor such that no portions of the existing rotor not dimensioned larger than the intended rotor remains; and d) machining the existing rotor to the intended rotor form to produce the turbine rotor.