Process for producing turbine bucket with water droplet erosion protection

摘要

A process of manufacturing a steam turbine bucket having water droplet erosion resistance including the steps of: a) forming a bucket (10) of a first steel alloy having a blade portion (12), the blade portion having a leading edge (14) and a trailing edge (16); b) welding an insert (18) of a second steel alloy to the leading edge (14) of the bucket; c) heat treating the bucket (10) and insert (18); d) finish machining the bucket (10) and insert (18); and d) hardening the insert (18) to impart water droplet erosion resistance to the insert.