Just take them from the comments he posts. Vegetable oil has a higher boiling point, so the hot steel will take longer to cool and reduce the chance of it cracking. Fortunately, this is easily had at any hardware store: WD-40 is a water displacing product, not a lubricant (contrary to widespread advertising). Interesting and informative as always. I believe the change of color is due to a growing thickness of an oxide layer. I used Express Blue #1 on lots of guns, where I want something less labor intensive than slow rust blueing (which I wont describe here): most steel wool isnt oil-free. I use kerosene to wet my paper from 500 on up. Try it on some unimportant pieces first. Most waters in the Rockies clear out to the west coast will have high(er) dissolved solids in them. for 6-8 hours. -something to hold your object with i.e. "dateModified": "2022-03-27", Prepare the components of the metal surface before you attempt to blue using your tools. High temperatures and dangerous chemicals mean that a moment of carelessness can make you pay a heavy price. Heat the area you'd like to drill just until it starts to glow red, then allow it to cool slowly. It turns out I have. Degrease and heat the items to be blued in a steel pan to about 700F. That surface rust on the barrel could be polished off easily. This article has been viewed 914,567 times. Alternatively, You could store them in a hard case (like a pelican with a purge) and throw some desiccant packs in there as well. Shooting Mystery is reader-supported. This is a great time to point out that leaving guns in gun cases, especially the woolen/fleece cases, in the back of a closet, is one of the most sure-fire ways to rust the value completely out of a gun. "author": "Christopher Graham", Next you hold it in front of your heat source until a blue oxide layer covers the whole blade edge. Ill wait for and look forward to your article! Very helpful! Ive gotten hot blue salts on me splashed into my hair. Also thanks DG! How to Blue (Bluing) Steel Using Oven Or Torch and Oil Method OOMAN 2.28K subscribers Subscribe 872 112K views 4 years ago My apologies for the background Is the torch used to heat metal ..ONLY.with Cold bluing? This article was co-authored by wikiHow staff writer, Hunter Rising. Thank you so much for sharing such a great article. That seems wasteful. Then, use a pair of tongs to carry the steel to a container filled with water or vegetable, and submerge the hot metal in the liquid. Just remove the blue/rust, degrease, dry, then blue/card/boil-out/oil/drain. This is often achieved without chemicals by simply heating the steel until a blue oxide film appears. Once you strip the blue & rust, then you can see what youre dealing with. Oil and grease really are the enemy because youre trying to (literally) corrode the metal. For more information on using a blowtorch and protecting the steel, scroll down! We have all kinds of rifles and shotguns with recievers made from non-Fe alloys again we do not give it a second though or break out the hardness tester. "@type": "ImageObject", Thanks for always being so willing to share, Sir. How to Blue/Re-Blue a Gun - The Truth About Guns ", informative and did not use technical language and concepts that would have left me floundering and none the wiser. It is always essential to remove all oils from metals you want to blue, even if the cold blueing solution claims you dont need to do so. If wikiHow has helped you, please consider a small contribution to support us in helping more readers like you. "publisher": { I have always wondered about storage in gun soft cases or the foamed Hard cases, and humid or dry, heat and cold. There can be different layers you have to apply. Ill be buying the stainless tubs and chemicals to do it and go for as close to black as I can get. Polish to at least 400 grit. The book claims they used wait for it "boiling gasoline" not making this up to clean them. the cost of all the tanks you need for rinse & boil-out Color case hardening is the predecessor of all metal coloring typically employed in the firearms industry. Find many great new & used options and get the best deals for 13 in 1 Metal Shell Welding Torch Nozzle Tip Cleaner For Welder Soldering at the best online prices at eBay! The difference is immersion in boiling water for bluing. I agree used oil works better and adding some copper and graphite seems to deepen the color and add more purple or plum to it. Add the two together and you have what is akin to rocket fuel in your face a way of oxidizing almost any organic material with insufficient water for cooling into a furious flame. This is an alternative method for creating the black oxide coating. Metal Finishing Guru. OK, now with the sights out and the trigger group off, you can put on the rust/blue remover on the barrel/action. "https://www.facebook.com/Shooting-Mystery-110244180901951", I have cut and polished 4 pieces of mild steel to demonstrate different colour stages. This process was repeated until the desired depth of color was achieved or the metal simply did not color further. . They have their place, but doing a whole gun with them isnt that place. 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. Safety is the number one priority so protect your body as much as possible. Picture Information. Your tanks better be tight, your stands for the tanks better be rigid, youd better have top-of-the-line fire extinguishers (NB the plural) available to you. | Alpha Detroit", "NRA Family | Gun Manufacturing: Browning vs. Bluing", http://mypeculiarnature.blogspot.com/2014/08/quick-rust-bluing-back-in-black.html, "Radio Kits and Designs for Old and New Styles", "Coating, Oxide, Black, for Ferrous Metals (MIL-DTL-13924D)", "Phosphate and black oxide coating of ferrous metals (MIL-HDBK-205A)", https://en.wikipedia.org/w/index.php?title=Bluing_(steel)&oldid=1142351288, Short description is different from Wikidata, Articles that may contain original research from October 2020, All articles that may contain original research, Articles needing additional references from October 2020, All articles needing additional references, Articles lacking in-text citations from September 2014, Articles with multiple maintenance issues, Articles with dead external links from July 2017, Articles with permanently dead external links, Creative Commons Attribution-ShareAlike License 3.0, This page was last edited on 1 March 2023, at 22:58. Drop a piece of hot charcoal in it and it will burn in the absence of any atmosphere as the nitrate provides the oxygen for the reaction. The parts are then oiled and allowed to stand overnight. By using this service, some information may be shared with YouTube. The higher temperatures of the other processes as well as their caustic nature could weaken the soldered joints and make the gun hazardous to use. Now you slide the cold rod in, and the plate cools, gripping the rod. You need to adjust the boiling point of the salts for your altitude. I wore latex gloves, as Brownells recommended, but used a pot holder to handle the hot barrel, and that may have been the source. Last Updated: May 13, 2022 I wish this article had come out sooner, since I did not know that 0000 steel wool may have oil in it. Hes claiming that method is more durable than Blue alone. 99. How to Blue Bluing Steel Using Oven Or Torch and Oil Method You might be able to start at 320 grit. Add in the 250F+ temperatures of the salts when they hit your skin, and youre both burned thermally and chemically in seconds. I don't understand why you are submerging it in oil? To temper the steel so it isn't brittle, place it in an oven heated to 375 F for 3 hours, and then it let it cool overnight. This process leaves a deep blue-black finish. In place of using a hot bath (although at a lower temperature) chemically induced method, it is possible through controlling the temperature to heat steel precisely such as to cause the formation of black oxide selectively over the red oxide. "logo": { 5 years ago, I found that heating will turn steel silver ~> gold ~> violet ~> blue. Oxides come after its been heated to a red heat and cooled. Note: I know a plastic container is pictured but always use a metal one! Mea maxima culpa - and I left my comment up rather than delete the thread (for now) just so I could reply and admit the My Dumb, rather than skulk away cleanly >;-), Question Stand on end over some paper towels to drain. 5. Above you can see some example pictures of the colour shades that can be achieved with this techniques.Have fun doing it! Salts. Various processes are used for the oxidizing process. It takes practice. For this Instructable I'm using thread cutting oil. For modern uses of black oxide, see, Learn how and when to remove these template messages, Learn how and when to remove this template message, "How To Remove Rust From A Gun Without Damaging Bluing? Process that partially protects steel against rust, This article is about the historical uses of black oxide. It is usually inadvisable to use cold bluing as a touch-up where friction is present. Next wash your piece in your chosen degreaser for a minute or so to get rid of all grease/fingerprints that was on the metal. Quenched steel is harder, but it becomes more brittle. It is not nice stuff. Craig, torch bluing is a real thing that has been use a lot in the custom gun world, mostly for screw heads but even for complete muzzle loader creations ( the vendor will be quite proud of his work it seems as cost increases considerably to a finished item). 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. Once the solution reaches its boiling point, turn down the burner to about one-third of the boiling temperature and let it stay there. Initially case hardening was used but did not offer any aesthetics. Glad that there are folks like you around. Red rust is Fe2O3, and is incomplete rust it will continue allowing the surface to corrode over time hence the oil or wax. ")You're ABSOLUTELY right. Again, dont mess around with these chemicals and only handle them with extreme attention. You will get it. 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 ALL RIGHTS RESERVED. Besides those, you must also have water displacing oil and cleaning solution (Dicro-Clean 909). In the automotive world this is a common practice. Large scale industrial hot bluing is often performed using a bluing furnace. Instead of applying the acid solution directly to the metal parts, the parts are placed in a sealed cabinet with a moisture source, a container of nitric acid and a container of hydrochloric acid.
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