Blade ring for flow machine, particularly for gas turbine, has hardened reinforcement on inner shroud, where reinforcement is closed in circumferential direction

摘要

The blade ring (10) has a hardened reinforcement on an inner shroud (16), where the reinforcement is closed in circumferential direction. The reinforcement has a closed hollow profile. The reinforcement is formed as multi-part having multiple reinforcement portions. The inner shroud and the reinforcement portions are formed of different material and with different manufacturing method.