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cleaning steel before welding
chrsgrain - 11/4/08 at 04:15 PM

Hi all,

Got some ERW tube to weld together, and its coated in some anti rust stuff - how clean does it need to be to weld, and how is best to clean it?? Also, same questions but for painting...

Thanks

Chris

zilspeed - 11/4/08 at 04:18 PM

The answer as always.....

Grinder with wire brush.

Rust / coating / paint gone in 60 nanoseconds.

Next ?

Stuart_B - 11/4/08 at 04:52 PM

quote:
Originally posted by zilspeed
The answer as always.....

Grinder with wire brush.

Rust / coating / paint gone in 60 nanoseconds.

Next ?


Seconded

stuart

caber - 11/4/08 at 05:17 PM

Flap wheel on angry grinder equally good!

Caber

tks - 11/4/08 at 06:17 PM

quote:
Originally posted by caber
Flap wheel on angry grinder equally good!

Caber


yupsz..

anychit that will be there will be burned anyway...

Tks

MikeR - 11/4/08 at 06:22 PM

and if thats too noisy then file / wire brush / emery (sp?) paper combinations till the steel goes bright.

907 - 11/4/08 at 07:02 PM

quote:
Originally posted by chrsgrain
Hi all,

Got some ERW tube to weld together, and its coated in some anti rust stuff



If the anti rust stuff is a type of grease then wipe this off first with a paraffin or panel wipe soaked rag,
then a flap disc on the weld area only.

You will have to degrease prior to painting so you might as well do this sooner than later.
At least you will then be working with clean material.

Paul G