The color is oxide, but I believe you can scrape it off. Use hemostats to hold a cleaning patch wetted with the solution and apply in nice, long, even strokes. However, if the bluing effect isnt satisfactory, then you can try giving the components an acid bath (using Hydrochloric Acid). Bluing involves an electrochemical conversion coating resulting from an oxidizing chemical reaction with iron on the surface selectively forming magnetite (Fe3O4), the black oxide of iron. An iron wire, stainless dipper, and part basket are required to handle the guns components and adjust the bluing solution as well. Make sure the piece is chemically clean, sandblasting followed by power wire brushing is good then stop heating when you hit purple because the heat will travel. Its a pretty straightforward process. However, rust bluing small areas often match, blend, and wear better than any cold bluing process. There can be different layers you have to apply. That surface rust on the barrel could be polished off easily. Try it on some unimportant pieces first. So you will get a shinier finish. { To remove them, you put the action/barrel into a sturdy vise (padded with soft jaws) and you use a piece of brass rod to drift the sights out. If everything appears good, then you can transfer the components into a hot water tank. After spending most of his career as a firearms expert and enthusiast, he retreated to the great outdoors to raise his family in peace and quiet. Dont just leave them on a surface that could corrode or burn), get a new patch into the hemostats, soak, wring out, and keep going. It's easy to get it too hot, too quickly - especially with an O/A or oxy-propane torch. Because so many people are trying to do this sort of thing on the cheap, thats when I start thundering in my warnings about safety. The reason why blued guns rust is that something was allowed to attack the surface blueing and get through it to new steel or the blueing job wasnt deep enough to complete passivate the surface from red rust. I thought there was something that could help improve the colors but wasnt sure until I came across this. The steel is also used for producing great police flashlights with awesome durability. And I work alone in my shop, and lack the required (IMO) safety facilities that are needed. Hi SteelJunkee Method is as follows: Fit rod into drill and set at constant speed Clean rods with acetone on clean rag Use butane and propane mix blow torch to achieve colour range Quench in water Dry The weird thing is that they look great for around 4-5 days then deteriorate. All tip submissions are carefully reviewed before being published. All About Bluing Steel Stainless Steel Necessary Gears and Tools Procedure Step 1: Ready the bluing tank Step 2: Process the components of the gun Step 3: Suspend You can experiment ultimately what oils to use. This works well for me. It was left in a flannel gun case in the back of a moist closet for 25+ years. : Make sure it is made from Mild Steel or Titanium. Should something happen, seek medical help right away. Its essential to keep stirring the tank to prevent the forming of hot and cold areas. In literally 10 seconds on a buffing wheel incorrectly applied, I could screw that up to a point where it might take be eight+ hours of hand polishing to recover my prior results. The blueing salt bath will be at about 286 to 292F, and as it is bubbling away, it is losing water, and the boiling point of the solution keeps climbing. The practice of bluing steel takes time and an exquisite eye for detail. It is also used by machinists, to protect and beautify tools made for their own use. This item: Special Blue Full Metal Butane Torch (Gold) - Refillable Flame Lighter- Culinary Torch - Welding Torch - Adjustable Dual Flame for Desserts, Creme Brulee, BBQ and Baking. Degrease and heat the items to be blued in a steel pan to about 700F. Excellent info. Bluing is also used in seasoning cast-iron cookware, to render it relatively rust-proof and non-stick. The plate turned blue just like you ible and I was told this was an effect of compression fitting.the rod didn't change colour even though it had the heat applied to it so was it actually the compression fit that changed the plates colour. "I have very limited knowledge as to how metal can be manipulated for different applications. ", https://mgs.edu/making-chisels-skips-newsletter/, http://www.technologystudent.com/equip1/heat1.htm. There wasnt a whole lot of pain just yet until my buddy took the safety bottle of vinegar solution used to neutralize the alkaline NaOH salts, and then the pain was there. Thanks for always being so willing to share, Sir. WebHeat the blade for 15 to 20 minutes in an oven set on 325 Fahrenheit if the handle is metal. {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/8\/81\/Harden-Steel-Step-1-Version-3.jpg\/v4-460px-Harden-Steel-Step-1-Version-3.jpg","bigUrl":"\/images\/thumb\/8\/81\/Harden-Steel-Step-1-Version-3.jpg\/aid1214287-v4-728px-Harden-Steel-Step-1-Version-3.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"
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\n<\/p><\/div>"}. "Bluing" is the process of oxidizing steel to create a durable, corrosion-resistant layer. Treating with an oiled coating enhances the protection offered by the bluing. very easy way to get a blue finish on steel - Fit and Finish When youre done, attach the thermometer to the tank and fire up the burner. Bluing - Finishes for Metal - I Forge Iron At the end of this heating process the crucible is removed from the oven and positioned over a bath of water with air forced through a perforated coil in the bottom of the bath. I pulled the temp off the top of my head. Although the steel parts, such as anOrdains watch hands, are near enough miniscule, each I want to add rainbow color to safety razor blades that would be used again, how can I do this? The tempering reduces the amount of martensite and thus makes the steel softer. A few safety items: highfour, case hardening is a bit different from what you describe.. Usually, the steel needs some time in a medium that will allow carbon to penetrate the surface, and we are talking 15 minutes to several hours. Nowadays, even mild steel does have a certain amount of carbon in the alloy, which can explain your observations, if you google "super quench," you should find a waterbased quench that is rumoured to do the same, but in my humble opinion, water can do just that as well. Ok you gotta help me out herewhen I was studying mechanical engineering a good few years back a project I done involved using a compression fit of 1/4" thick plate steel into 1" thick steel rod, both mild steel. Help 'blueing' with OA torch Once you get the colour you want, go outside to your oil container and fully quench your object into the oil! "Rust bluing" and "fume bluing" provide the best rust and corrosion resistance as the process continually converts any metal that is capable of rusting into magnetite (Fe3O4). Blow torches only heat a small concentrated area. You might also want to read our article on how to easily darken stainless steel or blacken stainless steel for more ways to personalize your gear. Then you pull it out and scrape off the oil along the blade edge. How to Blue/Re-Blue a Gun - The Truth About Guns Thank you so much for sharing such a great article. Gun companies dont/wont do it because they want to make quick money, and today its all phosphates and bake-on appliance paint (you didnt think a guy who calls Glocks cheez-whiz was going to sing the praises of Duracote or Cerakote, did you?). (Its Crystalline Potassium Nitrate 100%) $6.18 I have always wondered about storage in gun soft cases or the foamed Hard cases, and humid or dry, heat and cold. Heating will make the metal better in absorbing the bluing liquid. Itll evaporate rather rapidly, but still, dont whip it at cars or house finishes. When everything is set up, put on your protective gear and then get down to business. A Pocket Sundial From a Broken Pocket Watch! Use a smaller toaster oven if your piece of steel fits inside. Quenched steel is harder, but it becomes more brittle. I've never done anything like this but want to try. Heat the area with a torch until it stops sweating. "image": { Once the solution reaches its boiling point, turn down the burner to about one-third of the boiling temperature and let it stay there. Commercial products are widely sold in small bottles for cold bluing firearms, and these products are primarily used by individual gun owners for implementing small touch-ups to a gun's finish, to prevent a small scratch from becoming a major source of rust on a gun over time. Mea culpa. For the color change to be uniform you have to remove the grease, oil, paint etc or it looks blotchy. % of people told us that this article helped them. It had been thoroughly degreased before my first attempt, but in trying to repair a poor result, I apparently contaminated it a bit. The colours range through straw, gold, brown, purple, blue, teal, then black. "https://www.youtube.com/channel/UC6dwEQfHK1tk_ZeaA4PniOA/", Keep them in that state while you heat them but be sure to not boil up the tank. Alternatively, you can press the pad of steel wool between your hands over the container of acetone, and then put it on some paper towels to dry. The process was to coat the gun parts in an acid solution, let the parts rust uniformly, then immerse the parts in boiling water to convert the red oxide Fe2O3 to black oxide Fe3O4, which forms a more protective, stable coating than the red oxide; the boiling water also removes any remaining residue from the applied acid solution (often nitric acid and hydrochloric acid diluted in water). The wire is extremely small in diameter, so you have to take that into consideration. Any more advice is welcome SteelJunkee Joined May 6, 2018 Messages 891 I like parkerization on some of my milsurps.