PROBLEMS trying to get PENETRATION

[cream2cream]

hello, avin some problems with my new welder, just welded up a few rust patches ready 4 mot and the welds just dont seem to penetrate the metal, first i was weldin and there was bird sh7t type bits all over and the plates just dropped off with abit of force, now the plates feel solid and the welder aint penetrated











im totally baffled as ive followed guidelines


any advice would b very much appreciated



thanks

p.s. check the pictures

[bluecorsab]

did you have a bit of practice on some scrap metal before you started,it looks as if your amperage is a bit too low and wire speed not set right .i have similar problems changing between my welder and the one at work the answer is always practice on a bit of steel first and mess about with your settings before you start on what you want to weld

[cream2cream]

wire speed was 5 everythin else on max

is a sealey 150 welder

welds fine on the metal i tried b4 hand, do u think it'll pass mot like this? my mate said grind them down and slap seam sealer to cover the crap welds

[Nemesis]

I saw the thread title and my first thought was "try some lube"

[bluecorsab]

thats what i would do as the tester can only tap the repair area

[astra16vcdti]

I saw the thread title and my first thought was "try some lube"

Haha Same here

[alistairolsen]

First thing that strikes me in the pics is that you need to clean up the metal around the weld a lot further away from it.

Having just done mine in a similar place and guessing, I used 2 max on the switch settings and 5.5 wire speed with 0.6mm wire.

Also, I suspect your travel speed is too high, try moving the tip in small circles (4-5mm diameter) to build more heat in the area without burning through.

[carnegstar]

use figure of 8 paterns round the plate

[dewismotorsport]

your prep is causing you the problems get the area as clean as possible as it looks like your not getting a good earth, also if possible get the earth a lot closer, worst case just tack a small bolt to the plate and attach the earth to that and when finished just snap it off or grinnd it off

[TINTIN]

I saw the thread title and my first thought was "try some lube"

Haha Same here

And there was me concerned that it was just my twisted mind lmao

[8valve-craig]

your steel aint galvanised is it?

[mikesmith181]

i doubt it will pass the mot like that as its right next to the strut mounting point.

[Frisco]

What sort of gas are you using?

[cream2cream]

I saw the thread title and my first thought was "try some lube"

i tried to change the heading but it dont allow it, can anyone else add the word weld b4 penetrationlmaolmao

[cream2cream]

First thing that strikes me in the pics is that you need to clean up the metal around the weld a lot further away from it.

Having just done mine in a similar place and guessing, I used 2 max on the switch settings and 5.5 wire speed with 0.6mm wire.

Also, I suspect your travel speed is too high, try moving the tip in small circles (4-5mm diameter) to build more heat in the area without burning through.

i have the hole was only abit larger than a 50p the plate welded is 5 times the size, im using .8 wire do think this is too thick?

will try the different gun movement method

[cream2cream]

i doubt it will pass the mot like that as its right next to the strut mounting point.

well thats where the hole was, so how big a match r u meant to weld a whole new inner wing just to cover up a hole the size of 50p?

[cream2cream]

What sort of gas are you using?

pub gas

[cream2cream]

your prep is causing you the problems get the area as clean as possible as it looks like your not getting a good earth, also if possible get the earth a lot closer, worst case just tack a small bolt to the plate and attach the earth to that and when finished just snap it off or grinnd it off

this is a excellent idea, never thought of this

[alistairolsen]

i have the hole was only abit larger than a 50p the plate welded is 5 times the size, im using .8 wire do think this is too thick?

will try the different gun movement method

0.8mm wire should be fine, I only mentioned it as obviously your wire speed will need to be a little lower than mine.

Pub gas is **** too btw!

[Novasportowner]

Dito about the pub gas! and the area surrounding the patch needs to much cleaner than it is (as somebody has already said)
The wire speed looks to be far too high therefore you cannot weld in the same spot for long resulting in poor penetration.

Where are you located? maybe there is somebody on here who may be able to give you a hand?

[Novasportowner]

And there was me concerned that it was just my twisted mind lmao

Not just you, I saw the thread title then noticed the username too.
Sorry cream2cream, just pure class!!!

[cream2cream]

Dito about the pub gas! and the area surrounding the patch needs to much cleaner than it is (as somebody has already said)
The wire speed looks to be far too high therefore you cannot weld in the same spot for long resulting in poor penetration.

Where are you located? maybe there is somebody on here who may be able to give you a hand?

yeah ive reduced wire speed mate im in north cambs mate advice would b much appreciated

[cream2cream]

Not just you, I saw the thread title then noticed the username too.
Sorry cream2cream, just pure class!!!

ive just asked the mods if title can b changed


the cream name is from a club my friend used to run many yrs ago

[COO]

some very good advice and some vids here:

MIG Welding Tutorial, Techniques and Practical

[bucky]

as said already, clean your metals up more, make sure the earth is solid. also are you pushing or pulling? try changing the angle your doing it and make sure theres no draught in your work area.