It is currently Sun Dec 17, 2017 12:29 pm

 

Removing dross, mill scale from plasma cut parts

Learn and share dross removal techniques, experiences, and product knowledge here.
thefabguy
Posts: 26
Joined: Tue Aug 06, 2013 11:40 pm
Location: Redding, Ca
Contact:

Re: Removing dross, mill scale from plasma cut parts

Postby thefabguy » Wed Sep 18, 2013 12:27 am

I tried the muriatic acid tonight, and I cant believe how great it worked! Unreal! 1:1 mixture with water....The material is .059 HRS, and I let the parts sit in the solution for 3 hours, and they were totally burr/dross free! The scale is gone, and the parts look fantastic! Man what a time saver! I retrieved the parts with a long magnet, and rinsed them in clean water, then a quick wipe or two with a WD40 soaked shop towel. I just cant believe how great this works!

Thanks for all the lessons guys!

Image

Image
Image

bigjondrags
Posts: 59
Joined: Sat Aug 31, 2013 1:40 pm

Re: Removing dross, mill scale from plasma cut parts

Postby bigjondrags » Mon May 26, 2014 12:13 am

how long does the acid water mixture last? ive been using my tank for about 5 months and seems like its not working very well anymore and it turned cloudy rusty the other day? should i just add fresh acid?

User avatar
Gamelord
Elite Contributing Member
Elite Contributing Member
Posts: 1583
Joined: Wed Aug 29, 2012 5:17 pm
Contact:

Re: Removing dross, mill scale from plasma cut parts

Postby Gamelord » Mon May 26, 2014 10:44 pm

Muriatic acid is suspended in water. It will eventually evaporate (which is why you need to cover it and also why you don't want it venting inside of your shop). Over time it will get weaker and weaker. Normally I just add another gallon of acid to the mix and all is well for a couple months. If the tub is getting to nasty, I will change out the entire thing and go all new....but that is usually only once every 8 to 12 months for me.
Once you take flight, your eyes will forever be turned to the sky." "Lack of appreciation is the worlds biggest crime."

Torchmate 6x14 w/THC Downdraft
Thermal Dynamics Cutmaster 101
Corel Draw / Adobe Illustrator
Torchmate CAD

Masons Forge
Posts: 78
Joined: Fri Jul 05, 2013 11:18 pm
Location: Concord NC
Contact:

Re: Removing dross, mill scale from plasma cut parts

Postby Masons Forge » Thu Feb 05, 2015 11:28 pm

I use the acid mix also but my tumbler is a little different. I have a small concrete mixer that doesn't have paddles in it. My first mixer was from harbor freight, I wore it out in 3years next was one from Home Depot, works great. For the media I use sweeping compound or clean sweep the Zep brand works best. The first few times you use it the parts will have a film on them until the compound dries out a little I add dry play sand to the mix to help dry it out faster. After I use it a few times I add a little more compound. If it is throwing dust add more until it stops.
I first used this to knock the forge scale off everything I forged. Hope this helps

RevvedAC
Posts: 17
Joined: Tue Nov 11, 2014 10:26 am

Re: Removing dross, mill scale from plasma cut parts

Postby RevvedAC » Tue Feb 10, 2015 9:40 pm

Great info guys! Anybody have suggestions on where to find a bin with a lid that would fit 24" x 24" pieces? I'd like to be able to put a lid on to store the acid in the same container.

Sean

Jwagnon89
Posts: 5
Joined: Fri Oct 13, 2017 4:03 pm
Location: Athens Alabama

Re: Removing dross, mill scale from plasma cut parts

Postby Jwagnon89 » Fri Oct 13, 2017 5:55 pm

I'm cutting 18x18" 14 gauge pieces, can I stack them in the solution on top of each other or do they have to be the only thing in the acid?

User avatar
steelfx
Elite Contributing Member
Elite Contributing Member
Posts: 731
Joined: Sat Oct 10, 2009 12:09 am
Location: St. George, Utah
Contact:

Re: Removing dross, mill scale from plasma cut parts

Postby steelfx » Sat Oct 14, 2017 11:10 am

You can stack them.
Bill
Image


Return to “Dross/Slag Removal”

Who is online

Users browsing this forum: No registered users and 1 guest