I saw you reference a coleman stove and propane tank for heating solution. If you are referring to torch bluing, the If you are new to the subject and are in need of detailed instructions, then youve come to the right place. Brownells has steel tanks, and there are some steel/stainless long/thin tanks available from other sources. Right now I'm working on excavator replacement pins! It cannot rust any further. Next you hold it in front of your heat source until a blue oxide layer covers the whole blade edge. After the Civil War they switched to another process. Step 3: Suspend the components in the bluing solution tank, However, if the bluing effect isnt satisfactory, then you can try giving the components an acid bath (using, Step 4: Rinse the components in a cold water tank then transfer them to a hot one, Step 5: Submerge the components in a tank filled with water displacing oil, Address: 4455 Camp Bowie Blvd, Ste 114 #852, Fort Worth, TX 76107. Just dont. Turn the heat on and give a good regular stirring until it gets very hot and starts to steam. kitty litter (I would recommend the unused variety). highfour, case hardening is a bit different from what you describe.. Usually, the steel needs some time in a medium that will allow carbon to penetrate the surface, and we are talking 15 minutes to several hours. Nowadays, even mild steel does have a certain amount of carbon in the alloy, which can explain your observations, if you google "super quench," you should find a waterbased quench that is rumoured to do the same, but in my humble opinion, water can do just that as well. Ok you gotta help me out herewhen I was studying mechanical engineering a good few years back a project I done involved using a compression fit of 1/4" thick plate steel into 1" thick steel rod, both mild steel. There can be different layers you have to apply. Then you sight down the barrel and you see dips and waves in the barrel profile. How to Blue Bluing Steel Using Oven Or Torch and Oil Method. 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. Why do you bother with all this crap?. Theres a reason why I buy up clapped-out guns and stuff where people look at me with a WTF?! Once it's cooled down, take the object out of the oil and place it on a piece of paper/cloth and let it set for about 20 minutes. "@type": "ImageObject", Hot NaOH is so alkaline it is great as dissolving organic materials. on Introduction. Cold bluing is not particularly resistant to holster wear, nor does it provide a large degree of rust resistance. OK, now with the sights out and the trigger group off, you can put on the rust/blue remover on the barrel/action. 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? THANKS DG. Its for mild steel, which must be greased, oiled or otherwise coated with something to stop it from rusting almost immediately. Wear disposable nitrile gloves, work in adequate ventilation, bag and dispose of all rags/towels used in the process in their own bags, and quickly. Keep them in that state while you heat them but be sure to not boil up the tank. Were committed to providing the world with free how-to resources, and even $1 helps us in our mission. You need to constantly be adding in a bit of water to bring the boiling point back down into the range you need. There's also blued hardware available, like nuts, bolts, screws, and hinges. Mark the sharpened edge with a crayon. Go on and start bluing! Just remove the blue/rust, degrease, dry, then blue/card/boil-out/oil/drain. Fume bluing is another process similar to rust bluing. Work on a metal or steel surface, such as an anvil, to avoid any fire hazards. "url": "https://shootingmystery.com/wp-content/uploads/2021/01/How-to-Blue-Stainless-Steel-in-5-Easy-Steps.jpg" The inside barrel was saved by the fact it was so full of lead fouling. To remove pitting and keep the barrel profile intact requires skill with a file, and that requires hands-on training. Make sure the piece is chemically clean, sandblasting followed by power wire brushing is good then stop heating when you hit purple because the heat will travel. There are also methods of cold bluing, which do not require heat. Once you see it turn golden, the process has started and colours will change fairly quickly! tighter your arc, the less the heat input will be. This crucible was heated to 730C (1,350F) for up to 6hours (the longer the heat was applied the thicker the case hardening). ], Technically speaking, bluing is more or less a conversion of red iron oxide (Fe2O3) to black iron oxide (Fe3O4). Gas burners can usually do the job for this. These include hot bluing, cold bluing, niter bluing, and so on. Large scale industrial hot bluing is often performed using a bluing furnace. You want to be in the range of 600 to 650F. A couple bottles of aged bourbon minimum. Here is a simple way to get a blued finish on steel. Now, using the information above, you should have little problem bluing your firearms on your own. Whats the difference between Brown Express and Blue Express? This article received 28 testimonials and 92% of readers who voted found it helpful, earning it our reader-approved status. Wait for 10 15 minutes and then take out the components. At 700, you start losing your blues and the steel starts becoming a wispy silvery-blue, not a dark brilliant blue. My dad keeps his in a big safe with large desiccant packs that he threw in there. The cotton gloves insulate your fingers from the heated barrel, and they prevent oils from your skin from getting on the raw steel. Stainless steel can only tolerate hot bluing and a limited amount of chemicals. When the liquid stops bubbling, remove the metal from the container and wipe off any excess liquid. Wear thick gloves and a face mask before you quench your steel so the water or oil doesnt splash onto your hands. That can be a pen torch (pictured), a blow torch, a heat gun, a gas hob (which I am going use) or anything that will provide you with enough heat. When youre using polishing paper, you think that 600 grit is very fine, and it is taking you hours to polish out something to 600. This process was repeated until the desired depth of color was achieved or the metal simply did not color further. If you havent done it before, wait until I mention some items about it. The ideal setup is a pair of long sleeve gloves along with splash goggles and a face mask. Stand on end over some paper towels to drain. Black oxide provides minimal protection against corrosion, unless also treated with a water-displacing oil to reduce wetting and galvanic action. 500F-600F is often all that is needed and the parts can be done over and over again you just have to clean between each attempt. Another good test for determining when the steel is ready is seeing if a magnet sticks to its surface. In the hot salt process, you will need, oh, four to six tanks, only one of which will be the heated blueing salts. I wish this article had come out sooner, since I did not know that 0000 steel wool may have oil in it. 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. }. Shooting Mystery is reader-supported. Can a softly tempered piece be re-tempered harder without going through the hardening procedure again? If I remember right they then heated them up a bit and applied fish oil orignal and I think latter switching to linseed oil to protect the finish and give it that wet look. If you have very light, fine pitting, you can polish this out. 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. 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. Besides those, you must also have water displacing oil and cleaning solution (Dicro-Clean 909). That would be a hot salt blueing mix. Last Updated: May 13, 2022 This article has been viewed 914,567 times. We use cookies to make wikiHow great. Please note: As you are working with heat, please be smart, use your common sense, do the bluing process in a well ventilated area and keep a wet towel to hand. Note: I know a plastic container is pictured but always use a metal one! Reply You'll probably be fine following these instructions - you'll probably be OK driving home a little drunk, too. Notify me of follow-up comments by email. Heating white, degreased steel to 550 to 600F results in brilliant colors. (You say the rod was heated, but it couldn't have been, as it was on the inside. It is not nice stuff. So unless you have sufficient equipment and skill, its advised to let a professional perform the bluing for you. Degrease and heat the items to be blued in a steel pan to about 700F. It does provide good rust resistance, which is improved with oil. 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 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. You can reassemble the gun after. Ive learned a LOT. Heating it again to a lower temperature will not introduce additional martensite. 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]. -A heat source. What I forgot to mention in all of this is a detail that seems mundane, but it critically important: Wear cotton gloves. Brilliant blues. When youre done and have neutralized & washed off the Express Blue #1 solution, you then should spray down the barrel with water-displacing oil. As a small thank you, wed like to offer you a $30 gift card (valid at GoNift.com). That surface rust on the barrel could be polished off easily. Alternatively. At least one of the cold bluing solutions contains selenium dioxide. It is generally employed on smaller parts such as pins, screws, sights, etc. Use a steel tool to stir (remember the fumes).
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