Powder Coating

[meekers]

Hi all,
I am going to get a bracket powder coated that is a mount for our sprayer controls in the tractor cab. Will I need to pre drill the box section that I have capped off at either end? I know I would have to for galvanising but not sure about powder coating. Don't think the man doing it I very sure- he normally does car wheels! He did say that it heats to 200 degrees.

 

[Mursal]

No I don't think so ..........

 

[REStracTORATION]

I would put a tiny pilot hole underneath
Will be fine at a guess but safe than sorry on the unknown

 

[meekers]

Cheers folks

 

[335d]

No need for holes. Normally holes are blocked with rubber bungs to stop powder going inside. Seen this on a powder coating production line painting pumps.

 

[Pheasant Surprise]

It's the opposite of galvanising where you need the holes. Generally speaking you want the powder to stay on the outside of the object, so holes etc are covered.

Mind if something is going to be galvanised AND powder coated, then a good power coater should bake the item for several hours or longer to release any excess gases from the galvanising layer (especially if it's freshly galv'd) before it's powder coated. This reduces/stops bubbles coming up through the powder coat layer and ruining the final finish.

 

[the-mad-welder]

I was also told with powder coating to round off any sharp corners and edges as it is then less likely to flake and start to peel. For a proper job you should also make sure it is blasted first. Its also useful to ensure there is a hole somewhere so there is something to hang it from during the process.

 

[Ley253]

I would steer clear of powder coating.Its a one coat finish, with no primer, this being the case the slightest crack, and rust is away. The farm JD baler was powder coated on production, and its falling off in sheets! They are almost large enough to glue back on!

 

[REStracTORATION]

I would steer clear of powder coating.Its a one coat finish, with no primer, this being the case the slightest crack, and rust is away. The farm JD baler was powder coated on production, and its falling off in sheets! They are almost large enough to glue back on!

I must admit im not a fan of powder coating
Small chip and water works it way underneath looks fine outside but under the coating its rotting away nicely

But some applications its fine a internal cab bracket should be ok.

But marshall bonnets mudgaurds etc ford ap cabs just awful

 

[meekers]

It's only for this small bracket so should hopefully be ok and it will never be exposed to rain.

 

[the-mad-welder]

Where I used to go it was a £60 min charge. Has that been painted with primer or is it the camera angle/light? It'll need to be bare metal for powder coat. Personally, I'd spend a bit of my own time and a good aerosol paint if it were mine.

 

[meekers]

They quoted me £30. I sprayed it with primer after I made it, didn't realise it had to be bare metal for powder coating!

 

[Mursal]

That'll test the cab suspension, is it still level?
No fear of that breaking ..............


The powder coating will leave it looking very neat .........

 

[Steevo]

I would steer clear of powder coating.Its a one coat finish, with no primer, this being the case the slightest crack, and rust is away. The farm JD baler was powder coated on production, and its falling off in sheets! They are almost large enough to glue back on!

I must admit im not a fan of powder coating
Small chip and water works it way underneath looks fine outside but under the coating its rotting away nicely

But some applications its fine a internal cab bracket should be ok.

But marshall bonnets mudgaurds etc ford ap cabs just awful

Sounds like galv before powder coat would be the best option then.

 

[Ley253]

They quoted me £30. I sprayed it with primer after I made it, didn't realise it had to be bare metal for powder coating!

Clean the welds up a bit more, you dont want those raised edges, they can, and do catch skin! Then a few coats of normal aerosol to finish the job, much better than powder.

 

[RobFZS]

They quoted me £30. I sprayed it with primer after I made it, didn't realise it had to be bare metal for powder coating!

they usually outgass it first to burn all the oil and shite out of the metal so the powder sticks better and you don't get left with any imperfections

 

[meekers]

Haha, kind of thought my welding might get scrutinised after I posted that picture. It's not perfect I'll admit that but I'm a dairy farmer not a welder! I'll give it a clean up with the grinder, it was made at 10 o'clock the night before I needed to start spraying!

 

[Mursal]

Ah, the old 10 O'clock at night, before spraying excuse ..................

 

[REStracTORATION]

Ah, the old 10 O'clock at night, before spraying excuse ..................

Better late than never...

 

[Shovelhands]

I am not a fan of PPC, for all of the reasons previously stated, one chip and it's game over.

But I am told you can prime under it, unfortunately most things don't get primed first, as it's obviously cheaper and doesn't affect the immediate finish, and that's why we all hate it, because all of that flaking PPC has not been primed first.
I have not had any personal experience of this primed PPC process. Just what I've been told.

With regards to the op, I'd just spray it with an aerosol.......