Comment my welds

[T_Eclipse]

Hello everyone!

I am new on this forum and i am from Slovenia and my english is not very good, so I apologize in advance.

Well, recently i have bought http://www.varstroj.si/index.php/varmig-1805.202.html and now i want to make buggy from 40x40x2 RHS and fi33,7x3,2mm tubes. I have welded now for about 2hours but only on 2mm thick scrap metal and the sound is exactly like frying bacon

This are my today welds. According to welding calculator I chose setings number 2 for 2mm thick steel, I am guessing that is about 90amps. CO2 flow is 8l/min.
Amperage range is 75 - 180A, 6 setings.





Brown stain is there because i didn't held torch right.


Would you drive offroad buggy with this welds?

Is my torch movement speed right? If I travel slower i get burn trough (I can see my weld sagging in) , if faster I can not get good penetration.

This is a poor image of penetration


Any comment apreciated!

Thanks in advance!

 

[weldingscotty803]

the welds look fine. penetration loks ok. still a way to go though. keep practising. try and do a bit of side to side movement when welding a seam or overlapping U's.
keep posting pictures mate and you will get there

 

[Hitch]

A good start.
I appears you have the settings about right.
Movement speed, your not far off.
Try pointing your wire more towards the rounded edge of the box section, and letting the weld run onto the edges of the joining piece. You might need to move slightly slower for this method.


I wouldn't worry about a side to side movement on that material.

 

[chevyman_de]

You should also try setting "3" as welding box section will need more amps than butt welding sheet of the same thickness.

 

[Rusty]

Using some scrap turn the power up gradually until you start blowing holes then back the power off gradually until the holes stop that should give you maximum penetration.

 

[T_Eclipse]

Thanks for replies everyone!

So I need to put more heat on rounded piece because more heat sinks into the larger piece, and on T - joints I need more power because there is much more metal to be heated.

I will practice some more on scrap metal and then my first major project, the welding table!

Thanks again!