Peening equipment for turbine blades
November 1st 2007

A Guyson Multiblast RXS 900 glass bead peening system has been installed in a centre for refurbishing turbine compressor blades for aero engine makers.

The equipment is used to re-harden the turbine blade surface after it has been used for a period of time. Peening takes place in the RXS900 blast cabinet with an indexing rotating turntable fitted with six revolving work spindles, which index through the process area presenting components accurately and for a strictly measured time in front of the blast guns.

Blasting takes place at two of the six spindles.

These are positively driven by a toothed belt, with proximity sensors closely monitoring spindle rotation to ensure very accurate blast coverage.

Twin vertical pneumatic sliding doors open and close automatically to allow components to enter and exit. This is interfaced with the indexing mechanism.The doors create a seal during blasting to prevent media escaping.

Blast pressures, traversing gun travel, blast time, component rotation, media flow rates and other process variables can be adjusted and monitored via an hmi.

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