Tuesday, November 9, 2010

[MW:8153] repair of erosion on steam turbine casing

Dear Friends,

We are requested to repair erosion on steam turbine casing. We will have to weld build up and machine back to specified dimension. The material of the casing is GS22Mo4. Client do not dictate any standard to be used.

I have a few fundamental questions:
1. Do we really need a WPS for this work since there is no joining (just weld build up)?
2. If we need a WPS, should we develop WPS using "groove" or "overlay"? We intent to use AWS B2.1.

Hope to get your feedback.

Thank you.

Azril Dahari

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