Overhead Welding with 307 - Is it Possible?

Date 06-27-2018 13:54

GMAW-P
0.45"
Carbon Steel

Trying different gasses, can't lay down a good bead.

No wire manufacturer list recommended parameters for overhead. Anyone successfully done this?

Tyrone

By TimGary (****)

Date 06-27-2018 15:10

I have a WPS qualified for .045 GMAW-P for an 8mm single pass overhead fillet.
Done with Miller Axcess equipment and Accu-Pulse waveform.
Achieving acceptable Bead profile is tricky, settings, technique, travel speed variables are pretty narrow, so it takes an Operator who knows what they're doing. Otherwise, re-work will be an issue.
Using 90/10 gas and ER70S-6 (Lincoln L56).

Tim

By welderbrent (*****)

Date 06-27-2018 20:25

Wait a minute Tim,

In the title he says 307?? Isn't that a stainless electrode? Not sure why they are welding with 307 overhead on carbon steel.

Need a full classification of the electrode and more info. This would really be even more difficult with SS electrode.

Brent

By Tyrone

Date 06-28-2018 14:05

Tim,
I used the Axcess with Accu-pulse.

I agree with 70S it was tricky, but with 307 it's not looking good.

Tyrone

By TimGary (****)

Date 06-28-2018 16:37

Sorry, I don't have 307 use data...

By Tyrone

Date 06-28-2018 12:31

Thanks Al,
It doesn't quite hit the mark.
No pulse settings on the chart, but did use the short circuit and spray parameters.
Next will be trying a tri-mix.

307 is a bear.

Tyrone

By 803056

Date 06-28-2018 16:45

Austenitic stainless has a depressed melting point, so the total heat input can be slightly lower than would be used for carbon steel.

A lot of manufacturers use SG-HeAC-7.5/2.5 with reasonable success.

Al

By Tyrone

Date 07-03-2018 13:00

Thanks Al,
I have that tri-mix in storage. Time to see what it can do.
Tyrone