mig and flux core tips and techniques, equipment, filler metal
Hey guys, working on a job right now. Parts are a 1.25 chrome base. We are welding a 309ss butter layer and a Stellite 6 overlay. welding looks great on the outside but after machine we are finding small imperfections. Its not cracking but just small little holes, looks like porosity but on a very very small scale. Im running the wire on Pulsed Spray with a 600°F preheat. Ive tried using 2 different gases, 75%AR 25%CO2 and 92%Ar 8%CO2. Anyone have any experience with cobalt based alloys?
Welder chimp
- Welder chimp
-
New Member
-
Posts:
-
Joined:Sun Mar 18, 2018 1:11 pm
Is the 600 degree preheat a requirement as per the Welding procedure? The little bit of Stellite I’ve done, we were requied to keep it below 500 degrees.
- weldin mike 27
-
Weldmonger
-
Posts:
-
Joined:Fri Apr 01, 2011 10:59 pm
-
Location:Australia; Victoria
Be wary of oily residue on the wire. Those special alloys sometimes have machine gunk left on them. A scotch brite pad bulldog clipped over the wire as it goes into the drive rollers can help.
So we dont exactly have a proper welding procedure for this. The 600°preheat is coming from are metallurgist. But i agree with you on keeping it cool. Everything I have read has said to keep the part cool. Suggested 400° interpass temp max. And an update. I finished a part yesterday and kept the interpass temp under 500° and they machine the part today and it was perfectly clean. Thanks for the help guys!!
Return to “Mig and Flux Core - gas metal arc welding & flux cored arc welding”
Jump to
- Introductions & How to Use the Forum
- ↳ Welcome!
- ↳ Member Introductions
- ↳ How to Use the Forum
- ↳ Moderator Applications
- Welding Discussion
- ↳ Metal Cutting
- ↳ Tig Welding - Tig Welding Aluminum - Tig Welding Techniques - Aluminum Tig Welding
- ↳ Mig and Flux Core - gas metal arc welding & flux cored arc welding
- ↳ Stick Welding/Arc Welding - Shielded Metal Arc Welding
- ↳ Welding Forum General Shop Talk
- ↳ Welding Certification - Stick/Arc Welding, Tig Welding, Mig Welding Certification tests - Welding Tests of all kinds
- ↳ Welding Projects - Welding project Ideas - Welding project plans
- ↳ Product Reviews
- ↳ Fuel Gas Heating
- Welding Tips & Tricks
- ↳ Video Discussion
- ↳ Wish List
- Announcements & Feedback
- ↳ Forum News
- ↳ Suggestions, Feedback and Support
- Welding Marketplace
- ↳ Welding Jobs - Industrial Welding Jobs - Pipe Welding Jobs - Tig Welding Jobs
- ↳ Classifieds - Buy, Sell, Trade Used Welding Equipment
- Welding Resources
- ↳ Tradeshows, Seminars and Events
- ↳ The Welding Library
- ↳ Education Opportunities