galvanised steel

[the pict]

Whats best to get a good earth grind it off and re-paint or bolt to the surface, is galvy a good conductor ? trying to weld it would suggest it aint
\pict

 

[telectrix]

zinc is actually a better conductor than the steel.

 

[Robotstar5]

Grind off and repaint with cold galve spray, don't try and weld it, the fumes are very bad for you - metal fume fever

 

[Guest111]

the fumes given off by galv when welding are poisonous, so dont breathe them in.The best way is to grind off the surface coating then after making the connection cover the area with cold galvanising spray to protect it from corrosion.

 

[the pict]

Cheers Guys, not goning to weld it just from experience welding is a pain in the ar££e just drill it out it was more a question of do I need to gring off an area surrounding the bolt head
P

 

[Guest111]

Cheers Guys, not goning to weld it just from experience welding is a pain in the ar££e just drill it out it was more a question of do I need to gring off an area surrounding the bolt head
P

yes that would help

 

[telectrix]

No need to grind coating as regards conductivity. On a scale where copper =100%, steel is up to 15%, zinc 27%.

 

[Engineer54]

Why would you need to grind off a hot dip Zinc coating (galvanised coating)?? Non conductive paint, powder finishes and clear coat finishes Yes, but a highly conductive hot dip Zinc coating NOooooo!!

 

[the pict]

to grind or not to grind,one for the tester I think, might rig it up today and see what impedance readings I get on the coated surface, got my annuall NICEIC visit today I will run it past him, although I think I know what the answer will be, guesses anyone.

 

[telectrix]

Why would you need to grind off a hot dip Zinc coating (galvanised coating)?? Non conductive paint, powder finishes and clear coat finishes Yes, but a highly conductive hot dip Zinc coating NOooooo!!

exactly.

 

[Guest111]

Just one of those things, the place I was at they had you grind everything and I just got used to doing it, If they wanted to spend vast amounts on galv spray who was I to argue? Plus it came in handy at home.

 

[wade88]

My limited understanding always led to me believe in many instances, zinc dips were actually done to improve the conductivity of the surface...surely, as mentioned previously numerous times, the need to grind and re-coat is somewhat redundant. time could be better spent drinking a cup of tea?

 

[Guest111]

My limited understanding always led to me believe in many instances, zinc dips were actually done to improve the conductivity of the surface...surely, as mentioned previously numerous times, the need to grind and re-coat is somewhat redundant. time could be better spent drinking a cup of tea?

couldn't agree more mate but if that's what the bosses want that's what you give em,ours is not to reason why.

 

[wade88]

Bosses.... who'd ave em

 

[Guest111]

Bosses.... who'd ave em

fortunately not me anymore.