Black Oxide repair for dammaged tools

[arkangel06]

Hi all

At my work we have a black oxide coating stsyem called Blackfast its a very easy process to coat somthing

Today I black oxide coated a gray 1/2'' combo wrench

First step was to clean the rust off the wrench

I used a sand blaster with a very fine aluminum oxide sand or very fine glass beads for lightly rusted parts or just a touch up

The coating is applyed in a 4 chemical bath system with 3 water rinses

1st a degreaser (leave for 1-20 min) no real time limit
2nd a water rinse (leave for 1-5 min)
3ed the conditioner (leave for 15sec no longer!)
4th a water rinse (1min)
5th the black oxide coating (dip for 10sec check for even distribution then set it back in for 1min)
6th water rinse (1min)
7th De watering oil (1-30min) no real time limit

When you take it out of the de watering oil you blow it off with an airgun and it turns lilly white because of the calcium comming out of the coating.

After a quick whipe with WD40 its good to go

The finnish is very durable and can be re applied any time

Heres the end resulte sorry for no pictures of the process I dont want to bring my camera to work.





sorry for the blurry pictures

[Busted_Knuckles]

Can you check on that name, I just googled it and find nothing, but a link coming back to this post. I was searching GJ for info on doing just this, Ive got at least a hundred tools that have compromised Black Oxide finish, that Id like to re-finish, this is exactly what Im looking to do, would like more info you if you have it, as to who and where the chemicals are coming from ?

Thanks, Bill

[Eds_tls]

Looks good

[Mickey O]

I worked at a place that had the black oxide treatment too, I think our was heated but I'm not 100% sure (we also a had hot wax machine to put wax on sharpened tooling), does your process use heat?

I did the shears with the red painted handles below about 15 years ago and they've held up pretty well:

[Busted_Knuckles]

Stuff holds up pretty good it not submerged in water for a period, or repeatedly exposed to sitting moisture, and if it gets oiled once a year,,, its a good thing. Ive got lots of specialty tools that where stored on a wall under a leaky roof, and look like "butt", and need to be refinished. Sad part is they are mostly new and unused but I just cant stand to look at them...

[rsanter]

very nice
I wish I had access to that, I could go crazy with it.....

I use a home type gun bluing kit when I have to do stuff like that

bob

[Diesel_Crawler]

Another good thread,

http://www.garagejournal.com/forum/s...ad.php?t=25678

[Busted_Knuckles]

Originally Posted by Diesel_Crawler

Another good thread,

http://www.garagejournal.com/forum/s...ad.php?t=25678

Got it, thanks!!!

[ron350]

Are there any black oxide coatings that do not leave a bad smell?

I have used Bearchwood Perma Blue and the part will smells like rotten eggs mixed with battery acid even after soaking in Pbblaster for a week.

[arkangel06]

you get used to it.

[ZRX61]

Another alternative is a blowtorch & old motor oil. Heat the part, dip it in the oil, heat the part, dip it in the oil, heat the part, dip it in the oil... repeat repeat repeat..
Very shortly you'l have a shiny, jet black coating on the part.

Also happens to be a method of case hardening.......

[arkangel06]

Originally Posted by ZRX61

Another alternative is a blowtorch & old motor oil. Heat the part, dip it in the oil, heat the part, dip it in the oil, heat the part, dip it in the oil... repeat repeat repeat..
Very shortly you'l have a shiny, jet black coating on the part.

Also happens to be a method of case hardening.......

I wouldn't try that on my tools though.

[nate379]

$0.99 can of flat black from Walmart is all I use.

[arkangel06]

Originally Posted by nate379

$0.99 can of flat black from Walmart is all I use.

how many times will you have to repaint yours before i have to redip mine...

[nate379]

Dunno, I don't buy black oxide tools. We have some at work and I just spray everything about once a year to make them little pretty. I do the same for all the prybars, shovels, etc as well.

[ZRX61]

Originally Posted by arkangel06

I wouldn't try that on my tools though.

I did this yesterday:

$2 got me this:


Beadblasted:


Deburred etc:


Back in the blaster:


In process:


Done:


Cooling down:


Finished:

[arkangel06]

Nice.

How hot do you have to get the part though hot enough it will effect the steel?

[mkdive]

That's nice! I have a few wrenches I would love to do that to!

[ZRX61]

Originally Posted by arkangel06

Nice.

How hot do you have to get the part though hot enough it will effect the steel?

Not very, just hot enough to burn the oil basically. The oil bubbles a bit when you dip the tool & then the oil on the tool ights off when you hit it with the torch.
Metal wasn't even glowing dull red, just too dang hot to touch.

Did this one last week:

[arkangel06]

looks good!