zinc spray (galve spray)

hiya

has anyone used this type of spray on chassis, im stripping my chassis
back to bare metal and the plan is,,,,,

to spray/paint it with this zinc spray/paint then paint over it in
some sort of gloss,

ive been told by a farmer that the paint is exceptionaly good,

thoughts....


andy

Andy wrote:
> hiya
>
> has anyone used this type of spray on chassis, im stripping my chassis
> back to bare metal and the plan is,,,,,
>
> to spray/paint it with this zinc spray/paint then paint over it in
> some sort of gloss,
>
> ive been told by a farmer that the paint is exceptionaly good,
>
> thoughts....

It works quite well - not as good as galvanised but a close second.
It's a bit more prone to being scraped off. Brush it on (if you thin it
enough to spray it's useless). It's expensive, but I haven't found a
better product for corossion protection of steel (we use it for touching
up welds on galvanised steelwork) - lifespan in the open near the sea is
at least 10 years if it's applied well. It overcoats with most single
pack epoxy enamels quite well (my wrought iron gates are finished in 2
coats of cold galv followed by 2 sprayed coats of dark green epoxy
enamel and still look like new after 4 years). As always this is IME
and YMMV.

--
EMB
change two to number to reply

if you take it back to bare metal then apply some etch primer first .

the best galv paint i have used is called GALVAFROID , it needs to be mixed
well .

there is however no substitute for hot dip galvanising but for this youd need
the chassis sandblasting .

M0bcg wrote:
> if you take it back to bare metal then apply some etch primer first .
>

Do *NOT* etch prime first. Unless the zinc is in direct (electrical)
contact with the steel it won't work properly - it isn't a coating, it's
a sacrificial anode that is eaten away rather than the steel.


--
EMB
change two to number to reply

On Tue, 27 Jul 2004 07:33:01 +1200, EMB <[email protected]> wrote:

>M0bcg wrote:
>> if you take it back to bare metal then apply some etch primer first .
>>
>
>Do *NOT* etch prime first. Unless the zinc is in direct (electrical)
>contact with the steel it won't work properly - it isn't a coating, it's
>a sacrificial anode that is eaten away rather than the steel.


so ,,,,,,where do i find a supplier of GOOD gav paint, and HOW
expensive is it.

ive got a fully galved chassis that took a dent in the rear x-member.
so ive got myself a heavy duty x-member got it galved and will be
cleaning the galv edges back to bare steel to weld it on, thus
requiring the paint over galv paint. i know the inside wont be
protected but im gunna squirt about 2.5 litres of wax oil around the
weld on both sides. should give it some great protection.

then the chassis will be up on here for sale, fully galved (barring
the welded bits) 12 month old. got to be a bargain for someone.

andy

Andy wrote:


>
> so ,,,,,,where do i find a supplier of GOOD gav paint, and HOW
> expensive is it.

I'm half a world away and 2 secs with google finds me a supplier in the
UK - I don't mind offering advice based on my experience but answering
(oreven having to read) questions from those too lazy to have a quick
look for themselves is starting to **** me off.

Anyway UK online shop & pricing at http://tinyurl.com/5t8fn


--
EMB
change two to number to reply

"Andy" <[email protected]> wrote in message
news:[email protected]...
> On Tue, 27 Jul 2004 07:33:01 +1200, EMB <[email protected]> wrote:
>
> >M0bcg wrote:
> >> if you take it back to bare metal then apply some etch primer first .
> >>
> >
> >Do *NOT* etch prime first. Unless the zinc is in direct (electrical)
> >contact with the steel it won't work properly - it isn't a coating, it's
> >a sacrificial anode that is eaten away rather than the steel.
>
>
> so ,,,,,,where do i find a supplier of GOOD gav paint, and HOW
> expensive is it.
>
> ive got a fully galved chassis that took a dent in the rear x-member.
> so ive got myself a heavy duty x-member got it galved and will be
> cleaning the galv edges back to bare steel to weld it on, thus
> requiring the paint over galv paint. i know the inside wont be
> protected but im gunna squirt about 2.5 litres of wax oil around the
> weld on both sides. should give it some great protection.
>
> then the chassis will be up on here for sale, fully galved (barring
> the welded bits) 12 month old. got to be a bargain for someone.
>
> andy

Andy,

Having taken the trouble to have the replacement part galvanised, why not go
the whole hog, and have the weld zinc sprayed. There are two processes that
I'm aware of to do it. One uses a special oxy-acetylene torch that has an
air powered turbine to pull a zinc wire into the flame co-axially thus
spraying fine globules of zinc onto the part and physically bonding (Metco
is one brand of gun). The other process introduces the metal into the flame
as a fine powder from a hopper under gravity and is perhaps more suited to
smaller parts. I have both sets of equipment but no portable facility to
sandblast your weld area, which is needed (and must be fresh) for the zinc
to bond.

Andrew Mawson
Bromley, Kent, UK

"Andy" <[email protected]> wrote in message
news:[email protected]...
> On Tue, 27 Jul 2004 07:33:01 +1200, EMB <[email protected]> wrote:
>
> >M0bcg wrote:
> >> if you take it back to bare metal then apply some etch primer first .
> >>
> >
> >Do *NOT* etch prime first. Unless the zinc is in direct (electrical)
> >contact with the steel it won't work properly - it isn't a coating, it's
> >a sacrificial anode that is eaten away rather than the steel.
>
>
> so ,,,,,,where do i find a supplier of GOOD gav paint, and HOW
> expensive is it.
>
> ive got a fully galved chassis that took a dent in the rear x-member.
> so ive got myself a heavy duty x-member got it galved and will be
> cleaning the galv edges back to bare steel to weld it on, thus
> requiring the paint over galv paint. i know the inside wont be
> protected but im gunna squirt about 2.5 litres of wax oil around the
> weld on both sides. should give it some great protection.
>
> then the chassis will be up on here for sale, fully galved (barring
> the welded bits) 12 month old. got to be a bargain for someone.
>
> andy

Andy,

Having taken the trouble to have the replacement part galvanised, why not go
the whole hog, and have the weld zinc sprayed. There are two processes that
I'm aware of to do it. One uses a special oxy-acetylene torch that has an
air powered turbine to pull a zinc wire into the flame co-axially thus
spraying fine globules of zinc onto the part and physically bonding (Metco
is one brand of gun). The other process introduces the metal into the flame
as a fine powder from a hopper under gravity and is perhaps more suited to
smaller parts. I have both sets of equipment but no portable facility to
sandblast your weld area, which is needed (and must be fresh) for the zinc
to bond.

Andrew Mawson
Bromley, Kent, UK