Cougar 5 vs cougar 20

[stuart s]

Could someone please tell me the difference between cougar 5 & 20 as our company has just switched to 20 and I am getting masses of spatter that never used to get and have only ever welded with cougar 5. Many thanks people

 

[rikrobson]

the number is the % of CO2 in the mix. thus coogar 5 is 5% and 20 is 20% these is 2% O2 and the rest Ar. The coogar 5 is for thin metals like the BOC Argoshield Light and the 20 is for thicker steel. This higher CO2 concentration is making the weld hotter

 

[gordon stephenson]

What thickness of steel is your usual work?

 

[pedrobedro]

Have you adjusted the welder for the new gas ? You'll probably need a bit less voltage.

 

[stuart s]

Yes I

the number is the % of CO2 in the mix. thus coogar 5 is 5% and 20 is 20% these is 2% O2 and the rest Ar. The coogar 5 is for thin metals like the BOC Argoshield Light and the 20 is for thicker steel. This higher CO2 concentration is making the weld hotter

the number is the % of CO2 in the mix. thus coogar 5 is 5% and 20 is 20% these is 2% O2 and the rest Ar. The coogar 5 is for thin metals like the BOC Argoshield Light and the 20 is for thicker steel. This higher CO2 concentration is making the weld hotter

yes I understand that it make the weld hotter so I turned settings and wire speed down to no avail.

 

[stuart s]

What thickness of steel is your usual work?

Varies usually between 5 and 20 mm steel columns and beams for structural work

 

[stuart s]

Have you adjusted the welder for the new gas ? You'll probably need a bit less voltage.

Tried turning settings down but seemed to make it worse so I'm actually welding hotter than I've ever done to try and reduce spatter but am on the edge of getting undercut

 

[500e]

Why the change of gas ? was there a problem

 

[stuart s]

Why the change of gas ? was there a problem

We are going for ce certification and have been told cougar 5 isn't enough for what we do!

 

[TechnicAl]

You need higher WFS (current) and Voltage. The arc needs to sizzle like bacon frying.
http://www.lincolnelectric.com/asse..._MIGGMAWWires-SuperArc-SuperArcL-50/c4200.pdf

What do you mean by Cougar 5 isnt enough...........are you getting lack of fusion

 

[stuart s]

You need higher WFS (current) and Voltage. The arc needs to sizzle like bacon frying.
http://www.lincolnelectric.com/asse..._MIGGMAWWires-SuperArc-SuperArcL-50/c4200.pdf

What do you mean by Cougar 5 isnt enough...........are you getting lack of fusion

All I know is we have been told that we need to use cougar 20 for what we weld. Never had any problems with fusion and was a lot neater weld too

 

[gordon stephenson]

BOC only seem to recommend Argoshield (5% Co2 etc) light up to around 5mm thickness.

 

[Welderpaul]

I think there is a bit of smoke and mirrors about the different gasses, we use BOC Universal/Heavy. Changing the gas does need a bit of fiddling with the settings to get the set welding properly.
We changed our gas to Universal and did our WPS's on that gas so stick to it. IIRC the +/- % of gas composition on the WPS's allows you to switch between them anyway.