Fan blades brazing

[ggrindle]

I have some stainless ID fan blades at a power plant.

We are considering having Conforma-Clad or a similar company braze tungston carbide onto the leading edge. To perform this process they bake the part at around 2000 degrees F. This is a twisted and tapered blade and the profile is critical.

Should I be concerned with this process?

Previously we used a spray process to deposit chrome carbide and it worked reasonably well.

Any thoughts?

 

[EdStainless]

I would stay with HVOF spray coating. Heating the entire blade will change its properties and shape. You may get unpleasant results.

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[tomwalz]

I'll second EdStainless - we braze around 1500 F and metal movement is always a concern even at these lower temperatures.

tom


Thomas J. Walz
Carbide Processors, Inc.

http://www.carbideprocessors.com