Practise Welds. A Question.

[VeryFEDUP]

Hopefully I'll have managed to attach a photo of the welds I tried to run earlier. This was the result of a bit of fiddling With the settings on my Clarke 100EN in no-gas mode. The new wire seems a lot better with no tar like deposits.

When I tried on a piece of square tube with I think 2mm walls the weld seemed very flat. Upon closer inspection the metal had sagged down.

Do you think the settings were too high and/or torch speed too low? I don't seem to have a lot of settings to play with. Two switches labelled 1 or 2, High/Low and a wire speed. The switches were set to High and 2 and I had lowered the wire speed to around 4.5

Thanks for any advice.

 

[cumbriasteve]

The welds basically look ok for gasless, what you describe as the sagged down metal...you sure that's not simply the penetration you are seeing and exactly what you want.

 

[BrokenBiker]

that's a pretty typical gasless weld. nothing wrong with it from what I can see. power looks ok. don't forget you only have a maximum of 100 amps, which means realistically you will struggle to do anything over around 2mm anyway and get full penetration. my 100amp gasless is crap on anything over 1.5 really

 

[gaz1]

should be fine for thin box section and also thin sheet welding some others can be done with alot of preparation to the metal first thoe like this

http://www.mig-welding.co.uk/clarke-90.htm

 

[VeryFEDUP]

Thanks everyone. The photo wasn't of the square tube. The welds shown were on much thicker metal. I will have another go on Saturday. Tomorrow I'll be crashing around on an old mountain bike with a lot of like minded nutters. I will have a go at some joints. I want to make a bike stand and, if that holds together, I want to make a trailer.

 

[BrokenBiker]

a bike stand should be ok with that welder. I made a petrol tank stand for my father in order to air brush them and used my gasless mig similar to yours, it held a bike tank full of fuel no problem and it was a damned sight heavier than a push bike lol

I would advise a better machine, maybe a stick welder for a trailer as all new trailers in uk have to be tested before they can legally be used to tow and if they find any sign of a cold weld or slag inclusions in the weld im afraid it will probably fail

 

[VeryFEDUP]

I should have mentioned, it'll be a trailer to be towed by my bike. That's what I have the 20mm box for. It'll need to be fairly strong though as I want to be able to take my rotavator down the allotment without having to use a car.

 

[Robotstar5]

I should have mentioned, it'll be a trailer to be towed by my bike. That's what I have the 20mm box for. It'll need to be fairly strong though as I want to be able to take my rotavator down the allotment without having to use a car.

You're going to tow it behind a pushbike?

 

[BrokenBiker]

ah that is ok then. as far as im aware they do not need to be tested