Teach Hybrid To Weld Over Tinternet Fred

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HybridGirl

HybridGirl

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Today is the day I'm gonna be doin me first bit of welding. I int got a clue what i'm doing. Any useful tips and handy hints would be greatly appreciated.. now is the time to tell me yer secrets.. please! If yer don't know what i'm welding, see http://www.landyzone.co.uk/lz/f37/buggery-bollix-43742-14.html Here's a picture of me welder and the nut and pulley to be welded. I know how to plug it in and I kind of understand the principle of how it works. Thass about it!! So anything I shud know? BEFORE I go and bollix up me pulley??
 

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That's a tricky job for a first try!

Go find some old bits of steel and PRACTICE!

Get the side-grinder out and CLEAN all the bits you need to weld right down to shining clean steel. NEVER try to weld over rust, paint and crap.

Most of welding is common sense, touch, and practice.

It can't be that difficult because even I can do a handy job with both stick and oxy-acetylene welding.

Enjoy the magic of fixing things that other people would give up on!

CharlesY
 
CharlesY said:
That's a tricky job for a first try!

Go find some old bits of steel and PRACTICE!

Get the side-grinder out and CLEAN all the bits you need to weld right down to shining clean steel. NEVER try to weld over rust, paint and crap.

Most of welding is common sense, touch, and practice.

It can't be that difficult because even I can do a handy job with both stick and oxy-acetylene welding.

Enjoy the magic of fixing things that other people would give up on!

CharlesY
Click to expand...

Thank you charles. If I put a grinder on that nut, there int gonna be one left tho! I'm too heavy handed.. if I file it back by hand it'll do won't it? Won't get a grinder in the centre of the pulley either. So guess I need a round file or summat. Got some o them fer me chainsaw.;)
 
I offered to give a lesson but you decided to go to the pub.
O'well
Here is a list of tips

Clean shiny metal = good
****ty, rusty , painted = bad

Practice practice practice (Go skip diving for scrap to use.)

Try and get the same thickness steel to practice on and use this to set up the mig (Wire speed, current and gas flow)

The sound of a clean weld should be constant and like dropping ball bearings on a steel plate.

Start practicing on thick metal as this is easy and thin is a nightmare (try welding a coke can? the only person i have seen do this was my teacher in collage and he didn't to to well at it)

Basingstoke tec collage run a 10 week course one evening a week on welding (Very good for the beginner say hi to Brian for me.)

Watch out for things catching fire, them sparks can go a long way.
Do not weld on bricks, even slightly wet one can explode.

You want a full thickness penetration of the weld (Ooo er).

Don't use your best cloths them sparks go through jeans like a hot knife through butter.

and finely
You will get burned and Never look at the spark even at a distance.
 
HybridGirl said:
Thank you charles. If I put a grinder on that nut, there int gonna be one left tho! I'm too heavy handed.. if I file it back by hand it'll do won't it? Won't get a grinder in the centre of the pulley either. So guess I need a round file or summat. Got some o them fer me chainsaw.;)
Click to expand...

YUP ... sounds like you've got quite enough of the common sense part!

Next trick after it's a clean as possible .... try to jig the workpiece so that it is always UNDER the tip of the welding rod as you weld round it. You may need to rotate it as you go ... see below.

On a round thing like that, pop on a couple of SMALL tack-welds first. then spin the thing to make sure it's central unless if can't be fitted off-centre.

Trick ... you can TAP the small piece down snug AFTER tacking if the tack-weld is small!

Now you need a friend .... with welding mask and gloves .... and this friend (who is not the sort of "I have a friend who did something incredibly stupid" friend) helps by rotating the work piece very slowly as you weld. If the pair of you get this right, and take time to add eneough weld material, you'll do a good job first time.

Remember to bias the rod tip onto the BIGGEST side of the joint else there's a risk of blowing holes in the smaller side, and you must see the surfaces of both workpieces melting under the arc else it won't be a strong weld.

Further advice needs to come from a pro!

CharlesY
 
To add to the other bits of advice, this is how I learned.

Find a largish plate (about 6" square at least 5mm thick) and practice laying down straight lines of weld bead from top to bottom. Keep the torch angled about 30 degrees from vertical and make a slight rotation motion with your hand as you move down the plate.

The first few attempts will be crap, but keep practicing. You need the heat to get the penetration through the metal, and hence have a strong joint.

Next, butt two pieces of plate to give you an internal corner to weld. Again keep the torch inclined about 30 degrees from vertical in the direction you are travelling. The tricky bit with this is now moving the torch to get the heat into 2 plates simultaneously.

Once you've mastered this, turn the wire feed down and practice on thinner plate. MMA is the trickiest welding to do, but with practice you can weld 1.6mm plate with MMA, but MIG is a walk in the park compared with MMA and just requires practice.
 
ball bearings droppin on a plate???? no! no! no! a mig welder should sound like bacon frying

and yer pulley and nut are probelly clean enuff fer welding ..after you've pratised on some scrap..i.e that slitty you got must need some welding
 
Mmmmmmmmmmmm... bacon..... thank you guys. I knew yer was all wise and talented. One more question.. the cable comin out the welder wiff the clampy bit on the end, whaddo I attatch it to? the bit i'm workin on? Or what? Is it an earth?
 
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spot on Grunt.

Dont risk it HB - it might work out VERY expensive and if, as i suspect, they are different metals - it wont work - you will just bugger it up completely.

I dunno about welding Alternators - but I reckon theres a high chance of blowin all the electronics on it - so if yu DO weld it - it might not work at all after.
 
nah she's gonna weld the nut onto the pulley and then screw the whole lot onto the alt, so she int weldin on the alt.. and as its only a temp. bodge till another alt arrives why the fook not, its gotta be better than running about in a slitty
 
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