JUST DONT. The differing rate of cooling for each area produced a different color creating that rainbow effect. When the liquid stops bubbling, remove the metal from the container and wipe off any excess liquid. After three coats, washing and drying, the finish was not too bad, considering I was (and am) a rank amateur. By using this service, some information may be shared with YouTube. Heat the area you'd like to drill just until it starts to glow red, then allow it to cool slowly. Its a good process, but it isnt a 1:1 replacement for blueing. Brownells has a product that will strip blueing and rust (Fe3O4 and Fe3O2, respectively) and not corrode the underlying steel.Remove the barrel & action from the stock. Have proper ventilation and use proper modern safety gear! It is slightly caustic, so be careful you dont leave it on the gun for long. Dont mess with hot salts. Not only does it give you an alchemical feeling of satisfactionbut it also gives the metal a finish to stop corrosion. Todos los derechos reservados. If wikiHow has helped you, please consider a small contribution to support us in helping more readers like you. 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. ], }, The tank of distilled water you heat with a camp stove, the kitchen stove (Im not responsible for marital discord and disruptions of conjugal relations) or some other much larger heat source to a boil. The wire is extremely small in diameter, so you have to take that into consideration. While the rod may heat some by conduction, it wouldn't get hot enough to start the color-forming process. fascinated with blacksmithing, but have not had an income to even get it started. Also remember, by adjusting the heat you can get whatever color you want. 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. I am simply trying to learn anything and everything that there is to know about it. This crucible was heated to 730C (1,350F) for up to 6hours (the longer the heat was applied the thicker the case hardening). No one can even tell you what the heat treat is on a 1895 Mauser for instance yet we do not wet ourselves before we shoot one! 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 The parts are then oiled and allowed to stand overnight. You want 0000 steel wool for carding between coats. For the color change to be uniform you have to remove the grease, oil, paint etc or it looks blotchy. Central Texas. If you have a wood or phenolic handle, use a propane torch to heat the blade only for about two minutes. 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. I have done a cold blue on a very rusted .22 for a friend. The part you want to place in the receiving part is cold often just placed in a freezer for a few hours. Add in the 250F+ temperatures of the salts when they hit your skin, and youre both burned thermally and chemically in seconds. WebBluing is a passivation process in which steel is partially protected against rust using a black oxide coating. Why do you bother with all this crap?. I wore latex gloves, as Brownells recommended, but used a pot holder to handle the hot barrel, and that may have been the source. Holy crap, did that reaction hurt like hell. Keep heating the steel until you notice a blue color form on the metal. 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' Rinse them in a cold water tank after. Its durable and wears well. Usually, you can find the manufacturers recommended ratio in the product manual. (meaning oxygen atoms are able to attach themselves to the outer layer of the steel)We did this with an electromagnet! Bluing is a passivation process in which steel is partially protected against rust using a black oxide coating. -A heat source. Use your torch to bring up It is caused by a layer of oxide that forms when the steel is heated. When heat treating a forged blade you get the whole knife glowing, then submerge just the blade in the oil for 8 seconds. Then you sight down the barrel and you see dips and waves in the barrel profile. Thank you, DG! It is not nice stuff. Black iron wire You will need black iron wire to tie around any object you Dang it all. You risk a big fire that is self sustaining by the reaction itself. Youre just using stump remover to do it. For the chemical, the bluing solution should be either Oxynate No. I thought there was something that could help improve the colors but wasnt sure until I came across this. The easier of the two methods, hot bluing only requires some degreasing agent, a heating apparatus (a blow torch is perfect for this), and any kind of oil. 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. Cold blues will react with steel at room temperature, but you get more aggressive reactions when you heat the gun to, oh, 150 to 200F. You will get it. You heat the outside member only when you do a shrink fit.). 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. Another good test for determining when the steel is ready is seeing if a magnet sticks to its surface. 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. I can keep a Krylon can always handy for touch-ups. An iron wire, stainless dipper, and part basket are required to handle the guns components and adjust the bluing solution as well. I can't stress how important the degreasing step is! I just had my first experience rust browning a barrel. My first time wasnt a stunning success. Brand: Logix. 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. The cabinet is then sealed. NaOH will quickly and completely dissolve aluminum. The rod was heated and the plate 2" square was inserted and the rod shrunk onto it. Take them out after a couple of minutes and then wipe them clean to remove excess 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? Trust me, I'm speaking from experience :) ). Answer This process leaves a deep blue-black finish. The cotton gloves insulate your fingers from the heated barrel, and they prevent oils from your skin from getting on the raw steel. Theres a reason I didnt pursue a career in chemistry. Examples of this finish are common on older pocket watches whose hands exhibit what is called 'peacock blue', a rich iridescent blue. So I buffed down the barrel with steel wool and started over heating the barrel in the oven before taking it outside to add the solution (which is nitric acid). Once you strip the blue & rust, then you can see what youre dealing with. Oh mas oui.Express blueing, slow rust blueing, hot salt blueing, nitre blueing, carbona blueing all are better than cold blueing. Notify me of follow-up comments by email. That means 50-60 revolutions to make a foot. Thats one way to get dyspeptic to write articles! Always back your paper when youre polishing over edges and up against features. "image": { 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. If there is any finish left on the metal, it will interfere with the bluing pr Also, the results you indicate are typical of still having some oil on the gun. In the hot salt process, you will need, oh, four to six tanks, only one of which will be the heated blueing salts. If a bank transfer is made but no receipt is uploaded within this period, your order will be cancelled. Technically speaking, bluing is more or less a conversion of red iron oxide (Fe2O3) to black iron oxide (Fe3O4). As a small thank you, wed like to offer you a $30 gift card (valid at GoNift.com). Though it may seem tricky at first, youll be glad to have figured it out because knowing how to blue stainless steel will come in handy from time to time. just fyi, the old school method of case hardening steel is to get the piece so hot that a magnet will no longet stick to it and quickly quench it in used motor oil. Life is good. This step should be done before heating the steel, as the steel should be quenched immediately after removing from heat. Thanks for the lesson, DG. Next comes the main part. Youll get a dark spot right there. You should put the brass drift (which you can make out of a piece of brass rod about 1/4 in diameter) on the sight base, and then start tapping the end of the drift with a small hammer. gas coverage is another big one. Make sure to check every nook and cranny of the components so that you can find any discoloration or blemishes. 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 . How to colour steel with heat (hot oil finish) is a simple but effective way of achieving a desired colour of choice.The colours are fantastic and often come out in a beautiful two-tone shine. No. "datePublished": "2022-03-27", 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. Some people might not have a tank long enough to contain a barreled action to boil out. Every true outdoorsmans dream! Let them cool down as you take a closer look at the bluing effect. 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. Fume bluing is another process similar to rust bluing. Different colors can be achieved through variations of this method including quenching in oil instead of water. 1. You will need:-2x containers (one of them preferably being metal for the oil)-oil -unleaded petrol/Acetone/Terpentine/Rubbing alcohol or any goo "https://www.reddit.com/user/theshootingmystery" Approved. 4 years ago Soft, low-carbon steel was used, but strong materials were needed for the receivers of firearms. Glad that there are folks like you around. Battery acid is childs play compared to blueing salts. There can be different layers you have to apply. Your 700F temp is too high, IMO. If you want it smoother/shinier, you can polish up to 600 grit, with wet-or-dry paper. Drill bits and gun barrels are common examples. Black oxide provides minimal protection against corrosion, unless also treated with a water-displacing oil to reduce wetting and galvanic action. On another thread, we can go into nitre blueing, which is basically heating pins/screws/bits/bobs to 600F in a molten salt bath. Before you start, it might do you well to mark the sight base on each side of the dovetail with a Sharpie marker, so you can see when the sight begins to move. You have a degreased gun, and now you need to get the metal hot enough that the reaction will oxidize the steel as much as possible. To harden steel, start by heating the metal directly with a blow torch until it turns a cherry red color. Itll evaporate rather rapidly, but still, dont whip it at cars or house finishes. A Garden Gun Cultivates a Newfound Fascination, AZ Judge Dan Slayton Refuses to Reduce $2m Bail in Flagstaff Campus Self Defense Case, State Judge Issues Order Blocking Enforcement of Illinois Firearms Ban Act Statewide, Protecting and Serving: Springfield, IL Police Seized Homeowners Gun After Investigating Her Report of a Prowler UPDATED, Chicagos Failed Mayor Lori Lightfoot Loses in Reelection EffortBadly, http://www.lowes.com/pd_188198-316-HG-66420_0__?productId=4764059, http://cdn.spectrumbrands.com/~/media/Spectracide/Files/MSDS/SpectracideStumpRemoverGranulesSDSApr15.ashx. Cold bluing is not particularly resistant to holster wear, nor does it provide a large degree of rust resistance. "sameAs": } 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. -something to hold your object with i.e. 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. Pour in some acetone, and while wearing rubber gloves (dishwashing gloves are OK), put in a pad of 0000 steel wool, swish it around and pull it out. You turn up your nose at crap guns? This signifies that the steel is tempered. Bluing, being a chemical conversion coating, is not as robust against wear and corrosion resistance as plated coatings, and is typically no thicker than 2.5 micrometres (0.0001 inches). Aluminium (Al) and polymer parts cannot be blued, and no corrosion protection is provided. Once the solution reaches its boiling point, turn down the burner to about one-third of the boiling temperature and let it stay there. You can then u. se a soft brush to gently remove all the residue of the cleaning solution on the components. "height": "800", wikiHow is where trusted research and expert knowledge come together. Fortunately, this is easily had at any hardware store: WD-40 is a water displacing product, not a lubricant (contrary to widespread advertising). It also looks good on AK type weapons of which I have three to park. 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! Hot NaOH is so alkaline it is great as dissolving organic materials. You dont want to affect the hardness of your steel in critical areas like actions, bolts, bolt lugs, barrels, chambers, etc. 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. 84 or Du-Lite 3-0. Steps to Hot Blue Steel with a Torch Get it Feb 25 - 27. I have also had good results with 5w/30 motor oil, I've also used two-stroke oil with good results. As I'm bluing round pieces I slowly and evenly rotate the piece over the flame to equally disburse the heat. -An old container filled with your chosen degreaser (unleaded petrol), -Your desired polished metal object/s (very important! After that, slowly and steadily stir the solution in, Step 2: Process the components of the gun, Wait for 10 15 minutes and then take out the components. The torch comes in when you first apply the Express Blue. Hopefully these concepts suggest caution and diligence for what you are doing. Do this outside, so you can do this next part: Just whip the steel wool at arms length to extract the excess acetone. Now securely hold your piece with whatever you have chosen. Cold blues will react with steel at room temperature, but you get more aggressive reactions when you heat the gun to, oh, 150 to 200F. To obtain oil-free steel wool, get some acetone in a container (say, an old, clean yogurt container you were going to throw away anyway). YouTube - Nitre bluing a few gun parts. Picture Information. You then oil or wax over the finish when youre done. *Potassium Nitrate is an oxidizer. This works well for me. Reply 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). $36.73. It is generally employed on smaller parts such as pins, screws, sights, etc. "@type": "Organization", 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. Then you can express blue it with a propane torch and a tank of boiling water. "name": "Shooting Mystery", { The cross section and size of parts affect the outcome of the finish and time it takes to achieve. I have at least three cold blue solutions in my shop including Oxpho-blue, 44-40 and others. ", informative and did not use technical language and concepts that would have left me floundering and none the wiser. 3D Printed Futuristic Space Age Wall Clock. Hot blueing is a good process, especially if you have a lot of iron to shove through the blueing process quickly. I use a pickling paste. If the solution is still boiling vigorously, then you can expect the bluing to happen naturally. You are a fantastic resource for all of us here. Heating it again to a lower temperature will not introduce additional martensite. If you need to use a blow torch, focus the flame tip on the area you want hardened. Bluing is most commonly used by gun manufacturers, gunsmiths, and gun owners to improve the cosmetic appearance of and provide a measure of corrosion resistance to their firearms. I saw you reference a coleman stove and propane tank for heating solution. Dont want to get any of the liquid on you its 700F. For more information on using a blowtorch and protecting the steel, scroll down! }. This article was very, "I've been working with steel since I was a child, and reviewing these proper methods and skills makes my projects, "It surely educated me on several points. Following the treatment in the bluing tank, relocate the components to a cold water tank. In colloquial use, thin coatings of black oxide are often termed 'gun bluing', while heavier coatings are termed 'black oxide'. Follow the instructions. High temperatures and dangerous chemicals mean that a moment of carelessness can make you pay a heavy price. I hope to someday have good knowledge to pass on to people, heh. Are you sure you want to heat the steel to 700F in that early step? References I now want to reverse the process so I can drill and tap the metal tip. Safety notes: Dont use an aluminum pan. Cold blues will ", the wrong quality steel. Bluing is often a hobbyist endeavor, and there are many methods of bluing, and continuing debates about the relative efficacy of each method. If you want to blue something fast I have a cheap hot blue method: Lowes stump remover: It's easy to get it too hot, too quickly - especially with an O/A or oxy-propane torch. Blue or Black rust is complete passivation of the steel surface Fe3O4. List Price: $18.64 $18.64. So, you start with a clean gun, in the white, you play a propane torch over the gun to get it to the point where the blueing solution just will readily steam, but barely sizzle, and then you brush on the blueing compound. 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. Participated in the Explore Science Contest. Ventilation is important. Hes claiming that method is more durable than Blue alone. I think DGs method is a lot safer than mine. Degrease a pad of 0000 steel wool with acetone. Thank you so much for sharing such a great article. "https://www.pinterest.com/theshootingmystery/", If you are new to the subject and are in need of detailed instructions, then youve come to the right place. The potassium nitrate will liquefy at around this temperature and blue your items at a relatively quick speed. Ill be saving this for the future. Heat the Steel. Heating will make the metal better in absorbing the bluing liquid. Thoroughly degrease the area to be reblued with acetone. My dad keeps his in a big safe with large desiccant packs that he threw in there. You might need two applications to clean up more deeply rusted spots. Alternatively, You could store them in a hard case (like a pelican with a purge) and throw some desiccant packs in there as well. 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. "mainEntityOfPage": "https://shootingmystery.com/blue-stainless-steel-beginners/", Buffing wheels have their purpose, but they take real skill to use without making a mess of guns, starting with the selection of the wheel (theres, oh, at least six types of buffing wheel), choice of type of compound, choice of grit of compound, choice of wheel speed (many buffers have only one speed, and there are some jobs where you really want a 3-phase motor on your buffer with a VFD to adjust the speed down from 1800 or 3600 RPM) and so on. Acetone is also useful for de-greasing the barreled action. A Pocket Sundial From a Broken Pocket Watch! -2x containers (one of them preferably being metal for the oil), -unleaded petrol/Acetone/Terpentine/Rubbing alcohol or any good degreaser, -metal object/s (I used mild steel, Please note this method should NOT be used on tempered/hardened steel as you will effect the properties of the metal).
How To Cook Ring Bologna In Air Fryer, Articles B