pin holes on the surface of PTA overlay

Thread Modes

pin holes on the surface of PTA overlay

06-21-2014, 04:04 PM,

raviswanadha Offline

Active Member

Posts: 39
Threads: 21
Joined: Mar 2007
Reputation: 2

pin holes on the surface of PTA overlay

Dear all
we are PTA welding outer diameter of a cylinder with Spherical Tungsten carbide in Nickel Matrix. We preheat the part to 400 Dec centigrade and then start the PTA overlay . Then we furnace cool the part. As such we have no cracking problem. But when we cylindrical grind the part we are getting pin holes of the surface, Can anyone please help us rectify the defect.
regards

Email Website Find

« Next Oldest | Next Newest »

Possibly Related Threads…
Thread		Author	Replies	Views	Last Post
	opening blocked cooling holes in Stage 1 gas turbine blades	Gustavo Woltmann	1	2,800	03-07-2017, 08:27 AM Last Post: loriolo
	opening blocked cooling holes in Stage 1 gas turbine blades	demionkrishan	1	3,038	03-04-2017, 07:44 AM Last Post: loriolo
	not re-drilling holes	TurbineRepair	3	5,955	10-10-2008, 07:08 PM Last Post: Gordon
	Porous Machined Surface on Part Lower Inner Diameter on Inco 718 Coating Surface	Alexangel1226	4	9,014	03-19-2008, 02:05 PM Last Post: Gordon
	Masking of Cooling Holes	gshejale	4	8,317	01-20-2008, 10:09 PM Last Post: plasmajet1990

Users browsing this thread: 1 Guest(s)

Login
Username:
Password:	Lost Password?
	Remember me