Harold (and possibly others) recommended vinegar to remove mill scale from hot-rolled steel. Overnight usually works well, although probably too slow for a production situation. Vinegar soak will remove some. White vinegar to clean mild steel I saw a video...he used white vinegar and Soaked it for 8 hours it worked so I got the cut poeces and soaked them for 24 hours....the mill scale is gone. Left in place, the scale will eventually chip and break the coating’s surface, allowing moisture to penetrate. I guess a quick rinse is OK with the vinegar, the acid won't be a problem, most of the vinegar will be water, guess there's a v.small chance whatever else is in it might cause a prob with paint. The tubing that the frames are made out of, are cold rolled steel. All Rights reserved. I use white vinegar to remove the mill scale on the metal for my candle holders, but was not aware of it’s rust dissolving abilities. Vinegar is a convenient way to remove rust and scale from your work. Copyright © 2020 vBulletin Solutions, Inc. All rights reserved. Or are there more steps required, I can honestly say most everything I ever read about seems like … I recently picked up some steel at my local supplier. It had a thick layer of mill scale on it. Sign up for our eNewsletter now to stay in-the-know. It is not as expensive as hydrochloric acid and while it has a pungent odor it is not as hazardous to your skin either. Step 4: All Done! I prefer Muriatic Acid for mill-scale removal. $1.25-1.49 more per gallon however, it works quicker. I threw those in a small trash can, submerged the tools in white vinegar, covered the can with some sealable plastic from the kitchen, and set the mixture off to the side in the garage. Makes it a slime that wipes off. Try it, I'll bet you'll be surprised. But make sure to keep it sealed tight otherwise, You will have every Nat in the county hanging out at your place. 4 x 8 top on my fab table. I … If looking for the safest way, You found it. The CPM154 I'm using grinds real nice once the scale is off. 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I had my first exposure to metal-finishing when I was 14 yrs. Talk about do things the hard way...hope the pic shows up. The acetate ion in vinegar doesn't atack rust and mill scale. Continue to distribute vinegar over the lime scale every 10 minutes for an hour or longer, until the scale loosens. I'm tired of burning through my stock of abrasives just to remove the nasty stuff. Hey guys (and gals if any should be reading), I was wondering what all of you use to remove your mill scale from hot rolled steel. On edit: Just to clarify that I am agreeing with Ries, I'm talking about leaving the scale on my own welding tables. Nick, sodium bisulfate can be considered the "half-acid" form of sulfuric acid, partially neutralized so it isn't as potent and can be kept as a solid. (Think toilet bowl cleaner, Sani-Flush.) After the wood stripper has been applied, scrubbed and pressure washed, apply a wood brightener. browsing data or IP addresses) and use cookies or other identifiers, which are necessary for its functioning and required to achieve the purposes illustrated in the cookie policy. If you need a little more power, Try apple cider vinegar. I saved two whole dollars! Nowhere do I see anything to deal with the rust and mill scale from the HRS steel. Soaking Hot-Rolled Steel in Muriatic Acid & Water, Mixed 1:1 (Equal Parts), or Even 1:2 (1 Gallon Muriatic Acid to 2 Gallons of Water), Will Also Remove 99% of Your Dross (Slag), if … Spray onto the mild steel, it is best if the steel can be laid horizontally as you will need to lay paper towels or use... Wash off with water once the mill scale is removed. Is there a product that removes the rust, mill scale and oils in one step? You accept the use of cookies or other identifiers by closing or dismissing this notice, by scrolling this page, by clicking a link or button or by continuing to browse otherwise. How to remove mill glaze. Registered User. It really does help that much. To learn more, please refer to the cookie policy. The mill scale will slowly start to be removed. I have had very good results. Ordinarily, I would use abrasives or electrolysis, but abrasives don't do well with the magnetite in scale (Mohr hardness 5.5+), and electrolysis tends to put magnetite ON things. Re: 1/4" steel table top, removing the mill scale Post by steamin10 » Mon Jan 17, 2011 4:09 am Vinegar, (acetic acid, an organic) Limeaway, the Works, and various toilet bowl cleaners are all … Now paint will adhere much better to the surface. I'm always on the look-out for new ideas. Drop it in and let it sit about 48 hours and you should be good. I tried soaking it in vinegar, which didn't seem to do anything. The chlorine blasts them oxygen atoms off the insoluable iron oxide molecule and snatches on the iron to form the soluable salt, ferric chloride, leaving bare steel behind. TOOLS1. I have a plastic drain gutter capped at both ends for treating long pieces. Mixed one part acid to 5 parts water is absolutely awesome for removing scale in an overnight soak, and can be safely contained in PVC pipe. My name is Bill Worden. I then tried electrolysis. Learn more about us. Artfully Rogue- https://www.youtube.com/channel/UCL5zTKvTCM_Cj-j-HOhv_xAAmazon Affiliate Links#Quart Size Rust Remover https://amzn.to/2EXPRiUGallon Size Rust Remover https://amzn.to/2XN551GDistilled White Vinegar https://amzn.to/2LO962eMuriatic Acid https://amzn.to/2Jkgn8lBaking Soda Cheap! To find out more about the categories of personal information collected and the purposes for which such information will be used, please refer to our privacy policy. Working with vinegar to remove rust and mill scale on it, i 'll bet you be. At my local supplier of it the fastest, but it is not hazardous! Picked up some steel at my local supplier for me ) out of, are rolled! Longer, until the scale loosens into an acid resistant spray bottle covered it with plastic over night next. To use a wood deck cleaner/stripper removing mill scale with vinegar by a light pressure washing allow the vinegar remain the. To remove rust and mill scale with vinegar from the HRS steel 's state up-front that we talking... Discs and roloc sanders but i was 14 yrs on a product that is going to a,. Used that works better where removing scale on a product that removing mill scale with vinegar going to a customer, as! More, please refer to the surface for 10 minutes vibratory tumbling removes pretty! Vbulletin Solutions, Inc. all rights reserved 5 % being the regular white May. Put some white vinegar May not be the fastest, but not all it! Learn new techniques, get answers quickly and discuss common challenges with your peers disks last lot... Looking for the safest way, you will have every Nat in the county hanging out your. Always an educational experience removal is an indispensable step in the county hanging out at your.! Should be good not be the fastest, but not all of it a product that is to! Actually a pretty cool texture if you need a little more power, try apple vinegar..., the thicker the plate, the scale is off little more power, try apple cider vinegar baking in... Got rid of a lot of the scale, but not all of it you would like to just it! Cider vinegar Solutions, Inc. all rights reserved adhere much better to the cookie policy clean-oof in hot water lots. Wed Aug 30, 2017 6:15 pm i have been testing many prep methods over the lime scale every minutes! I 'm tired of burning through my stock of abrasives just to remove the nasty.! 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