Mig Welder Gas Pressure

[horseman1]

I turn off the valve on the tank when I'm not welding. I think my Hobart leaks a little gas when not in use based on my experience. If I'm not welding, the valve is closed. Hope this helps,

Kurt

 

[JJPWAus]

Vin,
Does more gas pressure give greater weld penetration?

 

[daedong]

<font color="blue">Does more gas pressure give greater weld penetration? </font>
John, no i don't beleive so, But different gases and gas mixes do. an example of this is straight argon gives little penetration but you get a very clean weld (little spatter) is great for very thin plate 2 mm or less. but not suitable at all for heaver plate.
where CO2 is cheap for say welding heavy plate good heat good penertration but very dirty lots of spatter.

 

[TOMDUALLY]

around here they will take your old tank in on trade for a larger tank and give you dollar for dollar for what you paid for it. so shouldn't be any money lost. /forums/images/graemlins/laugh.gif /forums/images/graemlins/laugh.gif