2. It turns out I have. $36.73. Dont scrub the solution onto the gun, just run a patch that is not dripping wet down one complete run on the barrel/action in one smooth stroke. Degrease a pad of 0000 steel wool with acetone. Go on and start bluing! Depending on what solution you use, the tank temperature must be maintained somewhere between 240 and 310 degrees Fahrenheit. Heating will make the metal better in absorbing the bluing liquid. It is usually inadvisable to use cold bluing as a touch-up where friction is present. ", not only fun, but also profitable. Excellent info. Also Dont get the 275-300F bath on you. Even at room temperature, the salts are highly caustic and will eat into your eyes or skin in seconds not minutes. Submerge in water and scrape edge. How to Colour Steel With HEAT : 5 Steps (with Pictures) High temperatures and dangerous chemicals mean that a moment of carelessness can make you pay a heavy price. 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. However, the chemicals from the bluing process can accomplish uneven staining on aluminium and polymer parts. Wear thick gloves so you dont burn yourself. Contemporary heat-treatable steels did not exist or were in their infancy. Above you can see some example pictures of the colour shades that can be achieved with this techniques. It's easy to get it too hot, too quickly - especially with an O/A or oxy-propane torch. [ There are 10 references cited in this article, which can be found at the bottom of the page. Modern home hobbyist versions of this process typically use a hydrogen peroxide and salt solution, sometimes with vinegar, for the rusting step to avoid the need for more dangerous acids.[7]. very easy way to get a blue finish on steel - Fit and Finish With. 6 years ago. Dont want to get any of the liquid on you its 700F. 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. You can blue heat-treated parts with no ill effects. Im talking like 90+ minutes to heat the salt bath to 285F. Whats the difference between Brown Express and Blue Express? The downsides are: the safety issue, which I laid out above, and which youve made clear. You MUST plug your barrels, gas cylinders, remove your pistons, etc. I saw you reference a coleman stove and propane tank for heating solution. There are also methods of cold bluing, which do not require heat. A couple bottles of aged bourbon minimum. The rod was heated and the plate 2" square was inserted and the rod shrunk onto it. You might be able to start at 320 grit. Hes claiming that method is more durable than Blue alone. I guess Ill have to just be happy drying toilet paper. Take them out after a couple of minutes and then wipe them clean to remove excess oil. You have entered an incorrect email address! for 6-8 hours. By using our site, you agree to our. The parts are then boiled in distilled water, blown dry, then carded, as with rust bluing. Quenched steel is harder, but it becomes more brittle. Dont. After that, slowly and steadily stir the solution in the tank to dissolve the salt. }. Friction, as from holster wear, quickly removes cold bluing, and also removes hot bluing, rust, or fume bluing over long periods of use. In the nitre bluing process, polished and cleaned steel parts are immersed in a bath of molten saltstypically potassium nitrate and sodium nitrate (sometimes with 9.4 grams (0.33oz) of manganese dioxide per pound of total nitrate). Although the steel parts, such as anOrdains watch hands, are near enough miniscule, each Bluing (steel) - Wikipedia You should note that the blue layer is rather delicate so dont treat it roughly. http://cdn.spectrumbrands.com/~/media/Spectracide/Files/MSDS/SpectracideStumpRemoverGranulesSDSApr15.ashx. Note: I know a plastic container is pictured but always use a metal one! wikiHow marks an article as reader-approved once it receives enough positive feedback. Colour case hardening occurs when soft steels were packed in a reasonably airtight crucible in a mixture of charred leather, bone charcoal and wood charcoal. An iron wire, stainless dipper, and part basket are required to handle the guns components and adjust the bluing solution as well. Note that it has to be a different tank from the one you used for Step 2. Most knives, rifle receivers and barrels are heated to at least 1200F and cooled and drawn at 490F-700F. For the color change to be uniform you have to remove the grease, oil, paint etc or it looks blotchy. Use a backing block of wood or even a Pink Pearl rubber eraser. Blued Pivot Steel 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. 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. : Make sure it is made from Mild Steel or Titanium. 2. I like 1.5 wide shop cloth myself). Blue The potassium nitrate will liquefy at around this temperature and blue your items at a relatively quick speed. You can experiment ultimately what oils to use. - Ballachy", "Bluing of Steel by Heat Treatment: Why and How it Happens? Glad that there are folks like you around. "@type": "Organization", 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?). This crucible was heated to 730C (1,350F) for up to 6hours (the longer the heat was applied the thicker the case hardening). $3.59. 8 years ago There is something really rewarding about this technique. 3. Now you can start.Apply heat to your object and heat up gently and equally. As I'm bluing round pieces I slowly and evenly rotate the piece over Its much cheaper anyways. Could I use stainless steel earrings that I have got? 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. Itll evaporate rather rapidly, but still, dont whip it at cars or house finishes. The process isnt intended for bronze. Also: Do not allow the solution to run, drip or sag. Make sure to check every nook and cranny of the components so that you can find any discoloration or blemishes. When youre done, attach the thermometer to the tank and fire up the burner. This article was co-authored by wikiHow staff writer. Itll take perhaps 20 minutes to really dry down. Torch The robot gives the steel valve seat a quick blast with liquid nitrogen and drops the seat right in place. Save my name, email, and website in this browser for the next time I comment. Cold blues will Youre just using stump remover to do it. Bluing may be applied by immersing steel parts in a solution of potassium nitrate, sodium hydroxide, and water heated to the boiling point, 275310F (135154C) depending on the recipe. Once you strip the blue & rust, then you can see what youre dealing with. Ive gotten hot blue salts on me splashed into my hair. I use a pickling paste. You can reassemble the gun after. Bluing is also used for providing coloring for steel parts of fine clocks and other fine metalwork. My current rifle builds are going to be parkerzied. The only way to do that is to heat it until the metal de-magnetises, quench it again, and then temper to the desired hardness. Is the torch used to heat metal ..ONLY.with Cold bluing? Often it does provide an adequate cosmetic touch-up of a gun's finish when applied and additionally oiled on a regular basis. 'Browning' is controlled red rust Fe2O3, and is also known as 'pluming' or 'plum brown'. Various processes are used for the oxidizing process. Then remove it from the degreaser, don't be tempted to wipe it off with anything. Thermometers and stirring tools are also needed, as well as something to heat up the tanks. Can a softly tempered piece be re-tempered harder without going through the hardening procedure again? Hopefully these concepts suggest caution and diligence for what you are doing. Drift the sights back in from the right side of the barrel. Many double-barreled shotguns are soft soldered (lead) or silver brazed together and many of the parts are attached by that method also. Blue Bluing Steel Remove the bolt & trigger group this might require a pin punch on some guns to pull the trigger group.From what little I can see in the picture here . My dad keeps his in a big safe with large desiccant packs that he threw in there. You can use a heat gun, a blow dryer, or a torch for this. You need to constantly be adding in a bit of water to bring the boiling point back down into the range you need. Then you have to heat the metal. Wear thick gloves and a face mask before you quench your steel so the water or oil doesnt splash onto your hands. Add 5 lbs of regular table salt to the water. } That would be a hot salt blueing mix. Even a fingerprint will affect the consistency of the colour. Heat source You will require at least one burner for bluing salts and two hot water burners. Bluing is a process usually used by gun owners and firearms manufacturers to improve the aesthetic value of their weapons. If you want to blue something fast I have a cheap hot blue method: Lowes stump remover: Another good test for determining when the steel is ready is seeing if a magnet sticks to its surface. Aluminium (Al) and polymer parts cannot be blued, and no corrosion protection is provided. An ideal temperature is 180 degrees Fahrenheit but it also depends on the manual. Think big scars. I've never done anything like this but want to try. pliers, mole grips, -An old metal container (I know, a plastic container is pictured but always use a metal one) filled high enough with oil to completely submerge your steel object would be ideal. List Price: $18.64 $18.64. "https://www.facebook.com/Shooting-Mystery-110244180901951", It will first turn gold, then orange, then red, purple, blue and then dark grey! Oil-free steel wool is also sold by woodworking shops. Answer 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. 1. You'll probably be fine following these instructions - you'll probably be OK driving home a little drunk, too. } I rarely use them. 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. Any gun. Spilling salts at this temperature will instantly result in fire, because the KNO3 is a powerful oxidizer all on its own, and the added thermal energy will light anything on fire all alone. Thank you, DG! ", informative and did not use technical language and concepts that would have left me floundering and none the wiser. . All those materials the leather and bone the coal where sources of carbon and other trace elements. Keep a grade B fire extinguisher nearby in case of a fire. It is named after the blue-black appearance of the resulting protective finish. Life is good. this produces better, less turbulant gas flow, which will reduce heat traces. Depending on the manufacturers manual, youll have to prepare roughly 6 to 8 tanks to perform the bluing effectively and efficiently. Free shipping. The ideal setup is a pair of long sleeve gloves along with splash goggles and a face mask. Once the steel is clean, you can begin heating it up. Central Texas. RF: Expect a write-up from me on Rust blueing and parkerizing in the next couple of weeks. Thanks to all authors for creating a page that has been read 914,567 times. My first time wasnt a stunning success. If you look at the temps that Tenifur(SP) and Melonite(sp) and early Pakerizing processes used this is nothing. It will instantly vaporize into steam and splash all over you. All blued parts still require oiling to prevent rust. Share it with us! You are nitre blueing here. I plan on doing this on a couple of older beaters first. I want to add rainbow color to safety razor blades that would be used again, how can I do this? This is how Colt made their rifles and pistols prior to Civil War you can read all about the process. I can't stress how important the degreasing step is! Always back your paper when youre polishing over edges and up against features. The blue appearance of the oxide film is also used as an indication of temperature when tempering carbon steel after hardening, indicating a state of temper suitable for springs.

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