It's easy to get it too hot, too quickly - especially with an O/A or oxy-propane torch. If everything appears good, then you can transfer the components into a hot water tank. Could I use stainless steel earrings that I have got? For hazzalandy: carbon content has nothing to do with the color process, it is only the temperature you heat to, and to a lesser extent, the time spent hot. The tempering reduces the amount of martensite and thus makes the steel softer. 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. Go on and start bluing! 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. Hot NaOH is so alkaline it is great as dissolving organic materials. Ive dealt with strong acids and strong bases in lab work, and I fear the strong bases more. Heres instructions from Mark Lee Supplies on using their Express Blue #1. 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. When the liquid stops bubbling, remove the metal from the container and wipe off any excess liquid. This process was repeated until the desired depth of color was achieved or the metal simply did not color further. How to Blue/Re-Blue a Gun - The Truth About Guns Heating up a tank on the kitchen stove. The salts will be a gooey caustic mess while theyre cold, and you MUST have covers on the tank when youre not using them, or the salts will climb over the edges of the tank and make a mess on the floor. Oil and grease really are the enemy because youre trying to (literally) corrode the metal. The ideal setup is a pair of long sleeve gloves along with splash goggles and a face mask. Can a softly tempered piece be re-tempered harder without going through the hardening procedure again? Black iron wire You will need black iron wire to tie around any object you Work on a metal or steel surface, such as an anvil, to avoid any fire hazards. 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. Best Gun Bluing ", not only fun, but also profitable. As mentioned, cold bluing can be done at room temperature with decent results. you may benefit from the use of a gas lense as well. Central Texas. Mess. Steel It would be a good idea to get some gloves on. Blued Pivot Steel The salts here will be slightly less corrosive (ie, just the pure KNO3, no lye), but at 600F, you have a big physical risk right in front of you. Dont want to get any of the liquid on you its 700F. By using this service, some information may be shared with YouTube. 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. How to Blue (Bluing) Steel Using Oven Or Torch and Oil Blow torches only heat a small concentrated area. The use of stainless steel alloy varies a lot from one manufacturer to the other and thats why the bluing effect wont always be consistent. That means 50-60 revolutions to make a foot. A non-linear resistance property of the blued steel of razor blades, foreshadowing the same property later discovered in semiconductor diode junctions, along with the ready availability of blued steel razor blades, led to the use of razor blades as a detector in crystal set AM radios that were built by servicemen (as foxhole radios) or by prisoners of war during World War II.[8]. Fume bluing is another process similar to rust bluing. There are many methods you can use to blue the steel. Did you ever find out what oil they were using? Most cold blueing agents contain some selenium dioxide in them to enable to them to react at room temps. This will keep the bluing from adhering to the sharpened edge. That doesnt happen easily or by accident. By signing up you are agreeing to receive emails according to our privacy policy. It, too, must be oiled to provide any significant rust resistance. Dang it all. Next you hold it in front of your heat source until a blue oxide layer covers the whole blade edge. Fe3O4 requires chemicals and/or heat to push the iron to full oxidation. For the color change to be uniform you have to remove the grease, oil, paint etc or it looks blotchy. Premium fencing blades are often offered with a blued finish. Be patient in the first few minutes as the metal needs to reach the temperatures where it changes colour! Very true. Life is good. 1. Higher carbon contents will take longer to heat. COPYRIGHT 2021, THETRUTHABOUTGUNS.COM. Add 5 lbs of regular table salt to the water. 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. Get it Feb 25 - 27. On another thread, we can go into nitre blueing, which is basically heating pins/screws/bits/bobs to 600F in a molten salt bath. of the steel than do not even try this on something that is anything other than artistic in nature! Heat the Steel. Thank you so much for sharing such a great article. Reply Different colors can be achieved through variations of this method including quenching in oil instead of water. Further, I probably would have used a coarser wet-dry to prep the raw steel (this was a kit Kentucky long rifle) rather than the 1500 grit I used. I've never done anything like this but want to try. Ive learned a LOT. This crucible was heated to 730C (1,350F) for up to 6hours (the longer the heat was applied the thicker the case hardening). Next comes the main part. | 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. WebBluing is a passivation process in which steel is partially protected against rust using a black oxide coating. Once you get the colour you want, go outside to your oil container and fully quench your object into the oil! WD-40, as mentioned earlier, is a water-displacing oil compound not a penetrating lube, and for preventing rust, WD-40 actually works pretty well, but it doesnt last like cosmoline or waxy oils used for long-term rust prevention. Keep a grade B fire extinguisher nearby in case of a fire. When youre done, attach the thermometer to the tank and fire up the burner. Thanks a lot for sharing. The loose oxide was then carded (scrubbed) off, using a carding brush - a wire brush with soft, thin (usually about 0.002in (0.051mm) thick) wires - or wheel. Hardened steel prevents knife blades from dulling and tools from bending and breaking. journeyman. Heating white, degreased steel to 550 to 600F results in brilliant colors. Help 'blueing' with OA torch The use of stainless steel alloy varies a lot from one manufacturer to the other and thats why the bluing effect wont always be consistent. To shrink, I assumed you heated the steel plate only, to expand the hole in it. (You say the rod was heated, but it couldn't have been, as it was on the inside. A Pocket Sundial From a Broken Pocket Watch! I'm a professional knifemaker and use many very high-temp methods including quenching 1,600F steel in pre-heated oil - I know what I'm talking about, 'cause I still have 10 fingers and my eyesight. First, let us go through a couple of bluing concepts that you have to know in order to achieve the desired result. it would appear these sights are drifted into dovetails. Use a steel tool to stir (remember the fumes). Once the steel is clean, you can begin heating it up. 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 might be able to start at 320 grit. Although the steel parts, such as anOrdains watch hands, are near enough miniscule, each 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? It greatly helped me to learn how to blue a gun perfectly at home. As I'm bluing round pieces I slowly and evenly rotate the piece over the flame to equally disburse the heat. Frequent TTAG commenter Dyspeptic Gunsmith saw the gun above in our postA Garden Gun Cultivates a Newfound Fascinationand answered reader questions about blueing/reblueing a gun thusly: If the rust is very fine and there is still substantial blueing left on the gun, you might want to strip the blueing. To heat this, I use a Coleman camp stove and a 15# jug of LPG gas. [4], Bluing can also be done in a furnace, for example for a sword or other item traditionally made by a blacksmith or specialist such as a weapon-smith. One of the reasons I hand-polish up to 600 and buff only above that is that when you see one of my barrels (by holding it up to a light source, and sighting down the barrel from the muzzle at your eye to the breech out at arms length), you see no dips, waves, ripples, etc.
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