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Do all the prep you would for express or rust blueing, especially degreasing. By the time I was done it looked like it was a beat up 5 year old gun rather than a 1930s bolt .22 that came from a scrap yard. Never know when it will come in handy. The parts are then boiled in distilled water, blown dry, then carded, as with rust bluing. Fill the tank with a suitable amount of water then add in the bluing salt using the correct ratio. This method was adopted by larger firearm companies for large scale, more economical bluing. Hunter holds a BFA in Entertainment Design from the University of Wisconsin - Stout and a Minor in English Writing. Your 700F temp is too high, IMO. Todos los derechos reservados. What is your opinion of the 2 to 1 lye and potassium nitrate bluing solution? I'm trying to be positive and constructive, and think this is: for an amateur to stick a very hot torch-heated metal object into a plastic container filled with oil is simply dumb (ok, more polite: "irresponsible") at best, highly dangerous at worst. That surface rust on the barrel could be polished off easily. They should send you a stipend for your time. Use a steel tool to stir (remember the fumes). Could I use stainless steel earrings that I have got? Participated in the Explore Science Contest. Dont leave cold blue solutions around anywhere pets or kids could get at them. If the magnet doesnt stick, its ready to be pulled away from the heat. "Bluing" is the process of oxidizing steel to create a durable, corrosion-resistant layer. "publisher": { Use ice cubes. How to Blue/Re-Blue a Gun - The Truth About Guns The practice of bluing steel takes time and an exquisite eye for detail. Approved. "name": "Shooting Mystery", kitty litter (I would recommend the unused variety). Red rust is Fe2O3, and is incomplete rust it will continue allowing the surface to corrode over time hence the oil or wax. Bluing is also used in seasoning cast-iron cookware, to render it relatively rust-proof and non-stick. "datePublished": "2022-03-27", Browning a gun gives you a nice, even brown patina finish of red rust on a gun. That would be a hot salt blueing mix. The process isnt intended for bronze. Heating will make the metal better in absorbing the bluing liquid. Hot. 4 years ago The difference is immersion in boiling water for bluing. Use a coffee can or similarly shaped container as your quenching chamber. 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. Probably the main one is the content of so-called "carbon, "I was looking at making a set of plate armor and I wanted to see how to harden the breastplate. I dont have that much blueing to do in my shop, so I dont use hot salts. They should start gassing up approximately 2 to 3 minutes after exposure. If you have a wood or phenolic handle, use a propane torch to heat the blade only for about two minutes. If you want to blue something fast I have a cheap hot blue method: Lowes stump remover: The book claims they used wait for it "boiling gasoline" not making this up to clean them. Then the crucibles would be removed from the furnace and placed over boiling hot water and air would be bubbled through the water and the parts would be dropped into the water. "https://www.pinterest.com/theshootingmystery/", Stand on end over some paper towels to drain. Thank you all who had a part in the production of this important information! There are 10 references cited in this article, which can be found at the bottom of the page. That doesnt happen easily or by accident. The cross section and size of parts affect the outcome of the finish and time it takes to achieve. 2. For the process your metal should be nicely polished for the best results.The more shinier the polish the more your end result will glow. I can' Hardened steel prevents knife blades from dulling and tools from bending and breaking. Heat the area you'd like to drill just until it starts to glow red, then allow it to cool slowly. Fe3O4 requires chemicals and/or heat to push the iron to full oxidation. Any gun. Once you strip the blue & rust, then you can see what youre dealing with. "headline": "How to Blue Stainless Steel in 5 Easy Steps: Complete Guide", Rust bluing is also used on shotgun barrels that are soldered to the rib between the barrels, as hot bluing solutions melt the solder during the bluing process. Water is great for rapidly quenching the hot metal, but it could cause thin steel to distort or crack. Accidental exposure to the chemicals could result in serious injuries. "logo": { References 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). Best Gun Bluing You need to constantly be adding in a bit of water to bring the boiling point back down into the range you need. COPYRIGHT 2021, THETRUTHABOUTGUNS.COM. Holy crap, did that reaction hurt like hell. }, Fill a heat-safe container with water or oil deep enough to submerge your steel. LOGIX 20910 Butane Torch, Cooking Torch, Torch for Creme Brulee, Refillable, 9.6 oz, Blue Steel . Degrease and heat the items to be blued in a steel pan to about 700F. Blued Pivot Steel There are many simple ways to achieve good bluing. You have to apply the bluing fluid. - Ballachy", "Bluing of Steel by Heat Treatment: Why and How it Happens? If youre interested, just ask and I can provide more details. Even a fingerprint will affect the consistency of the colour. It is usually sold in a 1lb bottle for $3, you'll need 3 or 4 pounds probably. 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. Blue Bluing Steel Fume bluing is another process similar to rust bluing. We use cookies to make wikiHow great. It repeats the process adn by the time the head moves on to the next station all the parts are seated presumably for the life of the head. Either that or the steel wool. Hot blueing salts attack soft solders on guns, so it isnt to be done on old shotguns and some older rifles. This is one of the reasons rust and fume bluing are generally more rust-resistant than other methods. In fact most guides no matter their material cast iron to bronze and often bearing races are installed the same way. Blacksmith products to this day may occasionally be found made from blued steel by traditional craftsmen in cultures and segments of society who use that technology either by necessity or choice.[5]. It can soften up some paints and plastics. Also, the results you indicate are typical of still having some oil on the gun. 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. That means 50-60 revolutions to make a foot. Great column, and thanks for all the responses to various questions and comments. . All those materials the leather and bone the coal where sources of carbon and other trace elements. Ive hot salt blued guns in a shop with the proper equipment and you can shove a river of iron through a single hot salt tank in an afternoon. Just dont. It cannot rust any further. Any more advice is welcome SteelJunkee Joined May 6, 2018 Messages 891 These processes were later abandoned by major firearm manufacturers as it often took parts days to finish completely, and was very labor-intensive. If youre using acetone to de-oil, dont be afraid to do it more than once. Why do you bother with all this crap?. If a bank transfer is made but no receipt is uploaded within this period, your order will be cancelled. If you want it smoother/shinier, you can polish up to 600 grit, with wet-or-dry paper. After ", informative and did not use technical language and concepts that would have left me floundering and none the wiser. Have proper ventilation and use proper modern safety gear! Cold blueing solutions usually just dont wear well. Keep them in that state while you heat them but be sure to not boil up the tank. The potassium nitrate will liquefy at around this temperature and blue your items at a relatively quick speed. First, let us go through a couple of bluing concepts that you have to know in order to achieve the desired result. wikiHow is where trusted research and expert knowledge come together. Similarly, stainless steel parts may be immersed in a mixture of nitrates and chromates, similarly heated. The part that is to race the other is heated normally up to about 220 especially if it is an aluminum casting like a cylinder head. Besides those, you must also have water displacing oil and cleaning solution (Dicro-Clean 909). 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. Copyright 2023 Flixsterz. WebThe gun bluing process Start with 1 gallon of water and add it to a deep fryer that has been thoroughly cleaned. Life is good. Use Hot Bluing And Cold Bluing To Give Your Steel That This will remove all the traces of the bluing solution and other chemicals. Think big scars. 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. So basically, youll want the rifle in the vise with the muzzle pointed to your left. Heat the gun parts. Once the solution reaches its boiling point, turn down the burner to about one-third of the boiling temperature and let it stay there. | 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. it takes a long time to heat up a long (ie barreled action length) tank that is, oh, three barrels wide. WebHeat the blade for 15 to 20 minutes in an oven set on 325 Fahrenheit if the handle is metal. How to Hot Blue Steel with a Torch- A Step-by-Step Guide http://www.lowes.com/pd_188198-316-HG-66420_0__?productId=4764059 Interesting and informative as always. The steel is also used for producing great police flashlights with awesome durability. on Introduction. Now, using the information above, you should have little problem bluing your firearms on your own. 4 Ways to Blue Steel - wikiHow Gas burners can usually do the job for this. Hot bluing should never be attempted on aluminium, as it reacts it usually dissolves in the caustic salt bath. Do NOT wipe/touch your metal with anything after degreasing as the whole purpose of cleaning was then for nothing. I am simply trying to learn anything and everything that there is to know about it. Before operating your torch, read all instructions so you know how to handle it safely. Use a backing block of wood or even a Pink Pearl rubber eraser. occasionally I'll buff it afterwards. It, too, must be oiled to provide any significant rust resistance. In order to confirm the bank transfer, you will need to upload a receipt or take a screenshot of your transfer within 1 day from your payment date. 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. Its easy enough to color metal with a torch, but it has always been a hit-or-miss process for me, and when it was a big hit, I was rarely able to re-create how it got that way. You heat the outside member only when you do a shrink fit.). They melt at, oh, somewhere about 280F. Trust me, I'm speaking from experience :) ). Also thanks DG! 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. Haha. 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. Oxides come after its been heated to a red heat and cooled. Free shipping for many products! The robot gives the steel valve seat a quick blast with liquid nitrogen and drops the seat right in place. The downsides are: the safety issue, which I laid out above, and which youve made clear. 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 Degrease a pad of 0000 steel wool with acetone. Steps to Hot Blue Steel with a Torch It was left in a flannel gun case in the back of a moist closet for 25+ years. 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 . I wish I had known more about the process, heating (I was working outside on a 60 degree day) I may have to check with my friend to see if it needs reblued again, Im sure he never shot it. There are many methods you can use to blue the steel. Always wear goggles and gloves when operating a propane blow torch. This finish allows them to be stored in high-moisture conditions, like sports bags, without rusting. Hot NaOH is so alkaline it is great as dissolving organic materials. Heat the gun parts. 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. 3 years ago. For this reason, it is considered not to add any appreciable thickness to precisely-machined gun parts. 35% Potassium nitrate (aka saltpeter), http://castboolits.gunloads.com/archive/index.php/t-36054.html. I've never done anything like this but want to try. The wire is extremely small in diameter, so you have to take that into consideration. Referring to the post that started all of this; Dyspeptic Gunsmith says: Just remove the blue/rust, degrease, dry, then blue/card/boil-out/oil/drain. fascinated with blacksmithing, but have not had an income to even get it started. I use it, oh so cautiously in making my biodiesel. 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. Contemporary heat-treatable steels did not exist or were in their infancy. on Introduction, looks nice but you are using what is known as heat treatment which will darken steel, not using bluing salts as in gun bluing of rifle barrels all in all very nice instructable, Reply Bluing is a process usually used by gun owners and firearms manufacturers to improve the aesthetic value of their weapons. Blue or Black rust is complete passivation of the steel surface Fe3O4. This heating forms the blue on the plate. I think DGs method is a lot safer than mine. Youll need some shop rolls, ranging from 180 to 400 grit (typical 4-packs are 180, 240, 320 and 400 grit, in 1, 1.5 or 2. Bluing (steel) - Wikipedia High temperatures and dangerous chemicals mean that a moment of carelessness can make you pay a heavy price. New guns are typically available in blued finish options offered as the least-expensive finish, and this finish is also the least effective at providing rust resistance, relative to other finishes such as Parkerizing or hard chrome plating or nitriding processes like Tenifer.