Phosphating metal parts

[mjb0015]

has anyone tried their hand at phosphating metal parts? Is it difficult and what is involved in the process? Looking at maybe giving it a go.


Mark

[hybrid]

http://www.mustangandfords.com/how-to/p ... l-coating/

[mjb0015]

Thanks hybrid

[ozbilt]

Keep in mind that the coating does not last long in weather. Suitable for the "concourse" tragic only ......

I get mine done at BossKraft as Sean has a very big phosphate bath .....

[chopmgw]

Are u doing nuts and bolts ?

[mjb0015]

Michael Im wanting to do a heap of nuts and bolts and my bonnet mounts

[mjb0015]

Kerry my car is as far from concourse that a car can be, and Im not that anal

[ozbilt]

Kerry my car is as far from concourse that a car can be, and Im not that anal

Then get them zinc plated. Clear is the colour you want (bright silver finish to most people) & the corrosion resistance is a lot better.

DD289's 65 hardtop with clear zinc bolts added to the engine bay freshen up ......

[mjb0015]

That looks very nice!! is it cheaper to zinc plate opposed to phosphate?





Mark

[ozbilt]

That looks very nice!! is it cheaper to zinc plate opposed to phosphate?

Mark

Last time I got it done it was less than $100 for a 20ltr bucket full of bolts, nuts & small brackets. They plate them in a perforated barrel, not hanging.

The cost of setting up the phosphate treatment & the time you take stuffing around with it is just not worth it.

Even if it was double the above price (which is possibly is now) it is still great value.

[nassi]

Phosphate and oil is cheap but as noted it will not last.
In the past I soaked the bits in citric acid for a day or so to remove the rust, then soak in phosphoric acid until black. Heat the oven as high as you can get it and cook the bits in sump oil. Remove and drain the bits.

[chopmgw]

I had my nuts and bolts treated and cadmium coated by a guy at Salisbury.
Cost me about $40 for a bucket full if IRC.
PM me if u want the details.
Only down side was all that all the previous labelling of bolts went out the window and I had to remember what they came off for reassembling.

[nassi]

That looks like zinc coating. I thought cad plating was outlawed these days?

[ozbilt]

That looks like zinc coating. I thought cad plating was outlawed these days?

It is still done as the aircraft industry uses it. Cadmium plated steel rivets can be used to bind aluminium sheet with no galvanic reaction.

However it is more common for zinc plating & I agree, the above looks like zinc plating.

[nassi]

is the cad done here in Aust?