Welding

NewcastleFalcon · Unread post by **NewcastleFalcon** » 24 May 2011, 21:05

My mot tester has used his "corrosion assessment tool" to good effect and poked a hole in the sill just under the front end of the driver's door.

Hopefully I will not have to do anything too drastic, and manufacture a patch for Les along the street to weld on with his MIG.

In the interests of finding out a bit about the process I found this site which looks a good resource for all things to do with welding and a good forum.

mig-welding.co.uk

I unfortunately read the health and safety info and the prospect of "welding arc eye", "metal vapour", "welding shivers", "toxic fumes" and "UV light and molten metal" means that I'll probably just let Les get on with it from a safe distance

Neil

Unread post by **Peter.N.** » 24 May 2011, 22:17

Its 'elf and safety' again, I have been using a welder for 30 or 40 years years with nothing other than a uv filter for protection and as far as I know its done me no harm.

Peter

Unread post by **citroenxm** » 24 May 2011, 22:25

If you have a sense of COMMON Sense and know a little theres no problem what so ever... Id never Mig welded before, then when BOTH my XM V6's needed welding on the ends f the cills I bought a 150amp GAS Mig welder.. and done them both to no effect to me.. apart from pleasure!

I now need to do my 2.1 SED's cills, both in bad ways... to be done

Paul

citronut · Unread post by **citronut** » 25 May 2011, 07:48

well the Scotish complaint ark eye the noooo

is avoided mostly if you purchase a reactalight hood,

also wear full length leather gauntlets and a leather apron, lead lined of course

and no mig welding has had no advers afect on me either honest gov.

regards malcolm

xmexclusive · Unread post by **xmexclusive** » 25 May 2011, 08:41

What is the correct proceedure when the car catches fire from the welding?
I guess you beat it out with the whip as it would be a waste to throw the beer on it.

John

Unread post by **Peter.N.** » 25 May 2011, 09:49

Hi John

As I usually soak the underside with oil the event seems quite likely - but I never never needed any welding yet, probably because I soak the underside with oil

Peter

davetherave · Unread post by **davetherave** » 25 May 2011, 10:00

I have had the car catch fire a couple of times due to this!
Luckily i had some compressed air on hand to blow out the flames!

Unread post by **citroenxm** » 25 May 2011, 10:00

If your sensible and take your time and DO NOT do too much at once, then it doesn't get too hot...

Paul

citronut · Unread post by **citronut** » 25 May 2011, 12:58

citroenxm wrote:If your sensible and take your time and DO NOT do too much at once, then it doesn't get too hot...

Paul

nahhh no fun in that

but i do usualy thoughraly check whats on the other side of what im welding,

you know the usual make sure the petrol tank is close enough

its also that skin of sound deadening citroen stick all across the underside, as that goes up quite well,

regards malcolm

NewcastleFalcon · Unread post by **NewcastleFalcon** » 25 May 2011, 19:47

Heres the preparation so far for my welding job. The original cill was spot welded along its length at the bottom.

Look like I have used a banana to mark out the top edge-I will have to straighten that out

.

Neil

citronut · Unread post by **citronut** » 26 May 2011, 08:08

thats fine as it is and just needs a piece cut to fit, very easy job,

regards malcolm

atr · Unread post by **atr** » 27 May 2011, 04:55

As far as I know, that is a common procedure to mig weld on a car but what my question is- you dont have to disconnect the ECU in order to prevent it from getting a surge or spike of voltage? I know, for example, that it is not allowed to weld on a forklift that is equipped with electronic control.

citronut · Unread post by **citronut** » 27 May 2011, 07:54

you either disconect the negative battery terminal, or as i do conect a surge protector across the battery,

regards malcolm

lexi · Unread post by **lexi** » 27 May 2011, 09:05

Look at the rust in there even with hot sprayed zinc coating

They will all be like that inside lest they have been waxed.

It is the crimp at the bottom of sill that forms a double skin.........always deadly as a moisture trap.

NewcastleFalcon · Unread post by **NewcastleFalcon** » 31 May 2011, 11:03

This is the plan

Here is a piece of 1.0mm or thereabouts mild steel covered in a reasonable quantity of surface rust but whch does brighten up nicely. At £0 from my local agricultural engineers to me its perfect for the job

At the front end of the hole that needs filling up with new metal is the bolted on wing. My thoughts are to cut out two end-pieces as per the yellow card out of the steel so that the new outer sill patch can weld up to this new metal and avoid welding it to the bottom end of the wing.

I take it that trying to mimic the folded over bit of the original at the bottom edge is unnecessary and the bottom edge should just be butted up against the inner sill and seam welded.

The tne outer sill shaped bit is probably going to challenge my fabrication skills and ingenuity as my metalworking tools consist of a hammer, a couple of meaty cold chisels, and angle grinder, some ancient tinsnips and a hacksaw. A bench vice is lacking but probably would be useful.
Maybe all thats need when I get started is a strong pair of hands and form it over the edge of the kitchen table

regards

Neil