anyone can share the way of opening blocked cooling holes
in turbine blades? usually, I am using air grinder with small filler wire
to remove blocked cooling holes ,which has blocked by mud or while grit blasting.
please let me know is there any machine or special method
Hi! to all genius,
need all your valuable experience to sort out my issue.
I am having over spray coating below airfoil area of Stage 1 Blades during HVOF process and I have spend about 10hrs time to clean all the blades (Set). Do anyone coating Stage 1 blades over here and how you avoid over spray? is there any special mask or any liquid to stop permanently?
I need an opinion about HVOF or HVAF used for replacing of the hardened chrome layer on a cylinder used for cold rolling. Cylinder size: 600mm diameter and 3300mm long, weight 5.5 tons.
I will be grateful if someone that has made this coating with HVOF or HVAF on that kind of cylinder will share the experience.
It is suitable the coating with HVOF or HVAF given the high mechanical pressure and effort involved in cold rolling process?
Hi all. I work for our small family engineering firm, specialising in the repair of hydraulic piston rods. As our roots are in chrome plating, I'm having problems convincing others that we must invest in an alternative, as I am sure chrome plating will become problematic in the future.
I have been looking into HVAF tungsten carbide coatings, and feel this is the way the industry is going as a replacement.
As I have no experience in this area, could anyone help explain what I would need for a basic setup, and how to keep costs low (buying used or making own parts) as I'm going to struggle getting financial input.
my customer needs to spray the part called : Hot cut dies plastic compound as per drawing attached.
please let me know if any of you have ever done this kind of spraying job.
your early reply is highly appreciated.
Kermetico Inc., USA started delivery of the Convertible HVAF and HVOF system.
33+ kg/hour (73+lbs./hour) tungsten carbide spray rate, up to 50 microns per pass resulting in gas-impermeable, ductile coatings both for HVAF (5-25, 10-30) and HVOF (15-45, 20-53) cut powders.
The first system is at work in the company design shop in Benicia, California, the second one is just shipped to the first customer.