Gordon England Surface Engineering Forum



Thermal spray coating on Turbine blades


Posted by sudhanshu gupta on February 12, 2003 at 13:20:58:

We are an IPP and run our plant through 3GTs in combined cycle operation. TIT is 1060 to 1090 Deg. C.
MCrAlY is applied on 1st and 2nd stage stationary vanes and rotating blades of the Gas Turbines.

Lot of debate goes on, on which coating process to be applied ie whether LPPS/VPS or HVOF as widely varying experiences and practices are available thorugh out the Industry (Refurbishers and OEM including).

1) Could through detailed light on which proces is technically better over the other?

2) Some quantifiable details about commecial aspects of the these coatings?

3)Whether there is any difference between LPPS and VPS?

Would await for your response.

Regards

Sudhanshu Gupta
Engineering Services
Gujarat Paguthan Energy Corporation Ltd.
Bharuch Palej Road
Village Paguthan
Dist. : Bharuch, Gujarat, India
PIN - 392015

Tel . : +91 2642 288501; ext. : 1110
Fax : +91 2642 288512


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