5 replies to this topic

[carlburt78]

Hi guys after a disasterous first attempt at welding in my new A-post and stiffener im having to start again as my welding sucked and my plug welds didnt penetrate enough and were weak, so ive took the panels apart and i am going to start again,,, i have drilled bigger 8mm holes now but need some advice on plug welding techniques

 

i know this varies but what power setting approx on a 130 mig?

 

Do i start from the center of the drilled hole and work my way out?

 

or any other tips would be very helpfull thanks?

 

 

 

 

[sonikk4]

8 mm is large, i normally do them at 1/4". Power setting high with wire speed to match. I always try to start in the centre or slightly higher then puddle the metal until the hole is filled. You will need high power though to get decent penetration.

 

[Minidarren83]

How many power settings does your welder have? Mine has six and I use 3 for plug welds with a slightly faster wire speed than normal welding. I start in the centre and hold the weld there for a short time then work your way out

[carlburt78]

How many power settings does your welder have? Mine has six and I use 3 for plug welds with a slightly faster wire speed than normal welding. I start in the centre and hold the weld there for a short time then work your way out

mine has...........A 1  2  3  MIN OR MAX............... What is "A" setting on a welder?

[carlburt78]

8 mm is large, i normally do them at 1/4". Power setting high with wire speed to match. I always try to start in the centre or slightly higher then puddle the metal until the hole is filled. You will need high power though to get decent penetration.

 

will i need any torch movement?

[sonikk4]

A small amount, if you start at the top of the hole then gently bring the torch back. Or if in the centre just a small amount of up and down. You will see when you try it on a hole. Don't hold the torch on for too long or you will burn through so have a bit more practise until you are happy.

 

With the power on high and the wire speed turned up it will fill the hole very quickly.