about Cobalt-base alloy overlay

Date 11-17-2004 03:43

We have some welding overlay works to do.Who could give me some imformation about Cobalt-base alloy overlay(Stellite 6),or where i can get such document,such as website.Many thanks.

By GRoberts (***)

Date 11-17-2004 15:23

Try Deloro-Stellite, or Weartech

By PhilThomas (**)

Date 11-17-2004 18:40

Stoody has plenty of information at:

http://www.thermadyne.com/stdy/literature/nickel-electrodes.asp?div=stdy

From there you can choose the product form (coated, wire, bare) and read more.

hth,

By jiweiming (**)

Date 11-18-2004 05:42

Thank u.But how can i avoid caracking which appears immediately after welding? We use SMAW and MIG with TPS-5000 digital power sourse manufactured by Fronius in Austria.

By PhilThomas (**)

Date 11-18-2004 13:51

Sounds like you'll need some preheat, and slow cooling after welding, to prevent the cracking. St. 6 is a fairly high hardness material. If it is feasible, you could also consider switching to St. 21 which is much less crack sensitive....but also has a slightly lower hardness/wear resistance.