Best of luck with it. My preference would be for a cold process. Your question might be answered by sellers, manufacturers, or customers who bought this product. The formulation you have is about right for a "cold blue". So, kindly help me how can I prevent copper from appearing on metal surface. Top subscription boxes – right to your door, © 1996-2020, Amazon.com, Inc. or its affiliates. I like to do it myself. 3. lastly I dipped it into oil. (adsbygoogle = window.adsbygoogle || []).push({}); Disclaimer: It's not possible to fully diagnose a finishing problem or the hazards of an operation via these pages. A student. Goran offers 3 cold-bluing formulas on the page you are viewing. If I use hot process for blackening then the fumes destroys the look of rod and causes difficulty in further finishing. TUTORIAL FOR NEWBIES: 6 gms selenic acid 3) 2Cu+ + Se2- >> Cu2Se selenic acid..........45 gm Previous page of related Sponsored Products. Q. Some hardened and specialized steel alloys may blacken to a deeper black finish when activated using our Black … Thanking in anticipation. But it's SeO32-, not total Se that's important. Q. Hi This would probably … manganese nitrate...50 gm (up to 75gm) The results are also as follows: Recently I needed a couple of black hardware pieces I couldn't find and didn't want to spend money on, so I decided to try this method. Cold black oxide works on all ferrous materials except stainless steel. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations might be harmful. Regards. Cold Chemical Blacking of Iron and Steel BLACK-IT! }); You might also use steel wool or a scotch brite if you need a little more abrasion. Cold black for iron: People in the USA rarely make their own metal finishing chemicals anymore, so we tend to not have formulas in memory anymore; the people who know the formulations best are employed by the suppliers and can't reveal them. We have a brief intro about Hot Black Oxide vs. Cold blackening is a process we use here at Coco Architectural. Various processes are used for the oxidizing process. Good luck! Cold blackening can be used as a treatment for more than just steel and there are ways in which it is done that are significantly different than hot blackening. Can anybody confirm me that the formula for cold blue/blackening given above by Goran i.e., "manganese nitrate + copper nitrate + water" works or not?? A. Hi John. I needed to blue 7 barrels and didn't feel like spending a whole day doing so. Regards. Acid resistant, scratch resistant, hard enough . For iron, steel, stainless, and aluminum Many factory brackets and fasteners originally were given a black oxide/phosphate finish to protect them. "Cold" bluing is generally a selenium dioxide based compound that colours steel black, or more often a very dark grey. Make sure you use some oil on the items you are blackening or they may rust. Makes 5 cups of blackening solution. window.addEventListener("load", function(){ Step 1: Prepare Metal. Shayle. Reading the label it's comprised of selenious acid and phosphoric acids. Among the processes include chemical baths and finishes, cold-coatings, … 2. Cold chemical blackening or metal blackening is a black finish for most ferrous metals that provides no dimensional change. For hobbyist level work, cold Gun Blue is readily available in small quantities. Cold blackening on machined steel parts produces a non-dimensional finish that enhances the precision appearance of the components. Q. Hi there again. 4-6 ml nitric acid(1,34 gm/cm3) Composition of cold blackening solution of Ferrous metal. The terms “black oxide” and “blackening” are often used interchangeably to refer to various treatments that can be applied to a ferrous metal (mild steel, stainless steel, copper, zinc) to produce a dark metal finish. Eastwood’s Metal Blackening System allows you to apply a … Q. I'm looking for analytical procedures to test Se/Cu based darkening solutions. Unable to add item to List. This would make the reaction sharply dependent on H+ conc. A. Mn(NO3)2 50 gm Cold Blackening on line here, and you'll finder deeper coverage in the Metal Finishing Guidebook -->, To minimize search efforts and to offer multiple viewpoints, we combined previously separate threads onto this page. I'm not even sure that they are hot black oxided, they might be black nickel or black chrome. Blacken Steel Or Iron Parts At Room Temperature This new technique was developed by the commercial gun blue manufacturers as a more eco safe system than the commonly used hot application. tartaric acid......20 gm Directions instruct to submerge for 2-6 minutes. Copper Sulphate 10 % -- a roundtable with a seat for you. } The rod is made of carbon steel. Digital version Thanking in anticipation. I want to blacken the mild steel sheets I mean to give them a black colour with copper and selenium based material at room temperature, please guide me in this regard. Bernie Swart. To blacken the tip of rod. Missing will be the exact formulations of modern cold blackening solutions, however, as this is the proprietary knowledge of the companies who have invested in the experimentation. . was originally developed to provide easy and effective blacking of Iron and Steel components at room temperature. })}); Not a lecture hall ! Rather, I think the question is whether cold blackening will suffice, and I don't think it will. I have the same problem [as Dave] in composition of Se in cold method for darkening copper. A. Hi, D. You said "my preference", rather than "my requirement", so before talking about the formulation for room-temperature blackening, in fairness to you we should mention that it is generally less satisfactory than hot black oxide (but it is a lot safer). The best I could get was "cold grey", kind of the appearance of welded steel. The reasons for installing an in-house cold blackening … It is a safe and easy-to-use chemical immersion process operated at room temperature. Using acetone and a clean rag, wipe off excess oil, rust, etc off of your metal parts. 1. Water...............1 lit Good luck. "background": "#237afc" "Copper Sulphate 10% Any help would be greatly appreciated! "button": { Your recently viewed items and featured recommendations, Select the department you want to search in. A. I think the reactions are as follows: 2. make it look more shiny and deep. We appended your inquiry to a thread which offers generic formulations for cold blackening solutions. Birchwood Casey offers a 'send us a sample' but they are not specific about what they do. "background": "#fff", As you would guess it gives a bluish finish of copper selenide. Temp 50 °C. 4 oz concentrate for blackening steel. May be stored after it is mixed for blackening at a later date. A. Dear Suraj! Mid Temperature, 220–255° F. EPi’s mid-temperature black-oxide process, Kool-Blak 225, blackens Regards Reviewed in the United States on April 12, 2020. The Metal Finishing Guidebook includes a very good treatment of this subject. Good luck! Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. A. Bernie [affiliate link by editor to product info at Brownells]. A. Hi, Mr. Yvas. This coating inhibits rusting and allows for … It also analyzes reviews to verify trustworthiness. There is also a ' black oxide' process applied to the copper inner layers of printed circuit boards, but that is another topic. I have an inclination towards ORP measurements; also, total acidity and pH. 1. first I cleaned the metal(carbon steel) with an acid and 20-25 °C temp. I was going to use formula which is based on selenic or selenious acid but they are not available in my country. Reviewed in the United States on December 8, 2015, Reviewed in the United States on October 5, 2018, Reviewed in the United States on March 13, 2015, Reviewed in the United States on August 25, 2014. worked very well, must take great care in cleaning steel before use. A discussion started in nitric acid...........50 gm I am specifying carbon steel and cold process for blackening because I need this process for screwdriver rod which is chrome plated. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The product’s unique quality is that the … It is used to add mild corrosion … I don't think it would be a big deal to mask the shaft of chrome plated screwdrivers for subsequent processing -- a reusable plastic tube/straw with a centimeter of platers tape top and bottom seems like no big deal, and you have to mask near the tip regardless for a good demarcation line. First, I'm not confident that good adhesion of the clearcoat is assured, because these formulations do tend to be quite smutty. Personally, I find the best room temperature blackening, developed over a period of decades, to not be in the same class as hot black oxides. Burnishing Polishing Machine, ZFE 1200W 110V Burnishing Polishing Machine Polisher/... 2021 Ultrasonic Pest Repeller - Mosquito, Rodent Control Plug in Device - Reject Ro... 0.02% Aqueous Phenol Red Solution, 100mL - The Curated Chemical Collection, Copper (II) Sulfate Solution, 0.1M, 500mL, by Noble Scientific. 1995. elements_selector: "iframe" I certainly do not recommend this product! Q. A. Hi Antonis. In addition to this cold bluing thread, we also have many other threads about blackening -- thread 11740, "Black oxide formula for Hot Blueing of Guns/Firearms" should help you with the hot black oxide formulas. Insta-Blak 333 is an immersion/swab on blackening solution that results in a smooth, no-smut satin black finish on tools and architectural surfaces. John, Herters Belgian Blue Please try again. (No longer published, but a copy is on Academia.edu)Download it before it disappears. } Works in 2-6 minutes. Cold … Thought that the 9:1 mix was (perhaps) too weak and tried with pure solution... same results. Regards I have used the formula for blackening given by Goran based on Manganese nitrate and copper nitrate. Our black oxide finishes work with a variety of metals including cast iron, steel, stainless steel … Then do a lit search and expired patent search. Thanking in anticipation So, kindly tell me how can I: Blackening, or adding a black oxide finish to the steel, helps prevent steel from rusting by creating a chemical reaction on the metal surface. "popup": { A. Hi Shayle. This produces a striking black, firmly adherent finish on nearly all ferrous metals such as iron, steel … Compared to hot blackening, this option will … Significant blackening action takes place in 1 minute. Apparently you put selenium into nitric acid. There is a colorimetric method for Se based on 1, 4 diaminobenzidine, which sounds, and is, carcinogenic. A discussion started in 1995 but continuing through 2020. However, as a start, I think room temperature blackening solutions are selenium and copper based. Our time-tested metal finishing solutions include Mid-Temperature Black Oxide, Room-Temperature Black Oxide, Aluminum Oxide, Zinc Phosphate, Antiquing and Metal Coloring, Rust Preventatives, and … We have a quick FAQ intro to cold blackening on line. Will not blacken stainless steel, aluminum, or copper. From the introduction of the checkered Kraton® handles, and the … Black oxide is a finish applied to iron and steel. Q. Hello, can anyone help me to create a black oxide solution that will do the same as [name deleted for a lot of reasons including the vendor requesting it :-)] But better results will usually be obtained with proprietary blackening systems available from the suppliers listed in our directory or in the yellow pages. Please forgive any resultant repetition, failures of chronological order, or what may look like readers disrespecting previous responses -- those other responses may not have been on the page at the time :-). new LazyLoad({ Cold blue: This one 4 oz bottle of concentrate will make 40 ounces (2 1/2 pints) of solution and will blacken many items. TredNot 4 oz Steel Blackening Concentrate, Makes 2 1/2 Pints, Bluing Solution, Gun Blue/Black, Mix 9:1 with water. It is nasty, difficult, potentially dangerous and gives a superb finish. Can anyone help me about detection of selenium? If you have a piece of steel or iron you would like to turn black, and you do not want to paint or powder coat it, using a gun bluing solution will leave your steel with a dark black color. However, the best results come from low carbon steels — cast and ductile iron and powdered metal. The Metal Finishing Guidebook has a chapter with formulas for solutions for blackening and coloring metals. 4 Pack Ultrasonic Solar Mole Repeller, Pest Control Waterproof Solar Mole Deterrent... To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. I have a product that I have to mass produce, and the named product is coming out too expensive. USA SHIPPING ONLY. Making selenic acid will be tricky, and I would like to know the raw products to use. Black Oxide works on steel or iron parts only and will not blacken Stainless Steel - use Stainless Steel Blackener. 1. it shows the matte black color. note: Blackening of copper is a different topic than cold blackening of steel, but since we're talking about analysis for selenium, the procedures may have enough overlap that this helps the people who are cold blackening steel :-). 2) 2Cu2+ + Zn(s) >> 2Cu+ + Zn2+ But note that there is more to hot bluing than the formula, and that it is very dangerous due to the risk of this hot solution erupting (water instantly flashing to steam); use hot black oxide only with full protective equipment and in a proper industrial setting. Hope it helps and good luck! One gallon of un-diluted Insta-Blak 333 concentrate can coat … People study chemistry in school, and then naturally assume that the way surface finishing is done is by mixing raw commodity chemicals per their school lessons and coming up with their own process solutions. 2. the color removes off and makes hand dirtier. Ed. Formula for cold blackening / cold bluing / cold black oxide. A. USA SHIPPING ONLY. Consult'g, Train'g, Software Environmental Compliance. So if anyone can help with this and or the recipe for the solution, that would be a godsend. We appended your inquiry to a long thread about how to formulate and monitor home-brew cold bluing / cold blackening solutions. Q. Hi Sir, coper sulphate.......100 gm And the rod is chrome plated. We have an FAQ about Black Oxide on line here as a quick intro. Reviewed in the United States on December 10, 2019. 10 gms copper sulphate But I don't think that's the heart of the problem. I am facing a problem that is after bluing, copper coloured spots appear on the metal surface, which causes the surface to look badly treated or finished. Cu(NO3)2 50 gm & Install'n Chemicals & Consumables ©1995-2020 finishing.com, Inc., Pine Beach, NJ   -   About finishing.com   -  Privacy Policy You can use next solution: A Summary of BLACK-IT's … 3. prevent it from rubbing off. Birchwood Technologies offers free sample test finishing and on-site start up for immersion lines to make blackening your metal easy and successful. Makes 5 cups (2 1/2 Pints) of solution. After that, you could consult the Metal Finishing Guidebook. Find answers in product info, Q&As, reviews. I will not ship internationally. After viewing product detail pages, look here to find an easy way to navigate back to pages you are interested in. Selenious Acid 6 % I want to know about complete process for cold blackening. Reviewed in the United States on April 6, 2014. Is there any way to do it? 1. decrease time span. Please try your search again later. We also add a clear lacquer to the metal to add an extra layer of protection. One of the biggest innovations when using Black … We have an FAQ about Black Oxide and Cold Blackening, Muhammad. A. Hi Abdullah. At … 2. The durable finish you need comes from a molten caustic / nitrate bath. ... Why blackened steel. Q. Hi there. Q. Hi.I want to get some information about the blackening of carbon steel by cold process. Prime members enjoy FREE Delivery and exclusive access to music, movies, TV shows, original audio series, and Kindle books. I have seen and used these black-tipped screwdrivers, and although I haven't been involved in their finishing, I very seriously doubt that any high quality ones are cold blackened. Will not blacken stainless steel, aluminum, or copper. 4. I have no experience with the best sequence for mixing those ingredients, but do have two comments. Thanks. 1995 but continuing through 2020. I am an industrial chemist and am familiar with the hazards of metal finishing chemicals in particular. The whole procedure I have used for blackening is as follows: tannic acid .......20 gm A. There was an error retrieving your Wish Lists. Just used it this past weekend and worked great! dipped it into the water. copper nitrate .....50 gm Makes 5 cups of blackening solution. One blackening method, hot black … Second, if you're going for blue, you might need highly polished metal; I believe that most blackening treatments tend to look a dark jewel blue color on highly polished metal but more of a matte black on rougher surfaces. Mix 9 to 1 with water. I would be interested in making my own rather than buying it. Worked well to blacken/darken steel hinges, in restoring a 113 YO Singer sewing machine and cabinet. Often, companies need to change the colour of metal items to black to reduce glare in hazardous workplaces, and others wish to blacken their products to make them more appealing to customers. 4 oz concentrate for blackening steel. Want cold black coloring process for D2 steel? and the Zn content of the brass. 1) SeO2 2- + 6H+ + 2Zn(s) >> Se2- + 3H2O + 2Zn2+ Finally, the coloring of steel; The most attractive "blackening" is generally achieved using a variety of liquid chemicals in both hot and cold applications. window.cookieconsent.initialise({ So, kindly help me in using this alternate formula. Q. Dear reader Demineralised Water 79%" Reviewed in the United States on March 29, 2019. Please try again. SALEM MASTER 16 Inch Chainsaw Chains - .050" Gauge - 3/8 LP Pitch - 56 Drive Links,... Nut & Bolt Thread Checker (Inch & Metric), Original Version (SWTC-26), JET J-41002 2-Inch by 42-Inch 3/4-Horsepower Bench Belt and 8-Inch Disc Sander, Brownell Oxpho-Blue Professional Grade Cold Blue, Hot Max 24188 1/16-Inch ER70S-6 Mild Steel TIG Filler Rod, 1#, Heavy Duty Ball Joint Press & U Joint Removal Tool Kit with 4x4 Adapters, for Most 2WD and 4WD Cars and Light Trucks, Le Lematec Sand Blaster Gun Kit for All Blasting Projects, Remove Paint, Stain, Rust, Grime on Surfaces and Pool Cleaning. I want to do it for corrosion prevention as well as to beautify the material. Looks balanced to me. The one I currently have is as follows: Industrial Chemist & Registered Gunsmith - Western cape, South Africa, Metal Treatment Chemicals - SURAT, Gujarat State, INDIA, [affiliate link by editor to product info at Brownells], -- this entry appended to this thread by editor in lieu of spawning a duplicative thread, ©1995-2020 finishing.com, Inc., Pine Beach, NJ, "Black oxide formula for Hot Blueing of Guns/Firearms", How Google uses data when you visit this site. De-Bird Bird Scare Rods - Bird Repellent Woodpecker & Pigeon Deterrent Outdoor Spin... Copper (II) Sulfate Solution, 1M, 500mL - The Curated Chemical Collection. We must be cautious about possible legal implications in trying to crowd-source proprietary formulations especially on this "no registration required" website where a competitor or disgruntled employee might try to blow trade secrets, but patents are public info and so easy to access these days :-), Q. Hi I found this recipe on this forum and am using to blue steel which will be clear powdercoated for decorative use, could you please help me with the best method to combine these ingredients? It is used to add mild corrosion resistance, for decorative qualities or … It is a difficult product to apply … 3. sometimes copper becomes visible. Please make sure that you are posting in the form of a question. I purchased this black magic bluing solution and I blued the barrels with no problem at all. "text": "#237afc" FAQ: Black Oxide & Cold Blackening. My preference would be for a cold … It is quick, easy, cheap and pretty useless for a working gun. Black oxide or blackening is a conversion coating for ferrous materials, stainless steel, copper and copper based alloys, zinc, powdered metals, and silver solder. }, It worked but not as well as I really wanted. Thank you in advance, Selenious Acid 6% How Google uses data when you visit this site. . "palette": { Demineralised Water 79 % There was a problem completing your request. according to Detnner/Elze: Handbuch der Galvanotecnik,1966. So I think your chances of developing your own room temperature blackening chemistry that you'll be fully satisfied with are slim. Premium Metallic Acrylic Paint Set by individuall – 8 Professional Grade Metallic P... Nut and Bolt Thread Checker (Complete SAE/Inch and Metric Set) (Packs). We are a manufacturer of finishing products in India. If you search "cold black" and "cold black oxide" on these forums you'll hit more posts on these cold black kits. Cold blackening offers no corrosion resistance, although the wax or oil you may finish it off with will help a bit. Blackening not only protects the steel … Nitric Acid 5 % I have some ideas but some guidance would be most welcome. 50 °C temp. Q. I am interested in locating any available information on blackening processes for steel, stainless and brass. Cold chemical blacking, also referred as chemical blacking and metal blackening, is the process of blackening steel using the chemical blackening process. Q. I shall be highly thankful if someone could be given me a guideline for the following: I want to know which compound is used as a surface conditioner / surface activation before Room temperature cold blackening process. But good luck. The pictures show steel objects submerged for 5 minutes. 3. Process Nitric Acid 5% new LazyLoad(); I will not ship internationally. water.................1 lit. I've tried a bunch of the kits and never had any reasonable success, especially with cold rolled or any alloy steel. There are room temperature blackening solutions offered by EPI (Electrochemical Products Inc.) [a finishing.com supporting advertiser], Heatbath and others. Parts requiring blackening … Searching patents or searching old journal articles from 20 or 30 years ago with surfacequery.com or scholar.google.com should be productive. Also, what is the chemical to be used? There's a problem loading this menu right now. Blackened steel refers to a number of techniques which can be used to produce a blackened finish on steels. So, in short.... Follow instrucions for mixing with water precisely. Would like get help on : ---- 1 lit water Thank you One by one and in 20 minutes I had 7 barrels blued and now I have bluing solution to keep on bluing. Blackfast is a specialist finish for colouring iron and steel components black. Mix 9 to 1 with water. We add a cold finish on mechanically polished metals and then submerged it in a blackening chemical. If you need a product/service, please check these Directories: Jobshops Capital Equip. 2. then I dipped it into the Bluing solution for 5-10 min. Please help. Works in 2-6 minutes. 1. Also, there are vendors who sell in quantity, presumably at lower prices if you want to consider that option. Charli New 8X Solar Sonic Mole Repellent Groundhog Repeller Gopher Deterrent Vole C... Lubatis Owl Decoy to Scare Birds Away Motion Activated Plastic Owl Scarecrow with G... Gardtech Solar Powered, Motion Sensor, Red Flashing Lights Animal&Birds Repeller fo... Liver of Sulphur Gel, 1 Ounce Bottle | SOL-610.01. Sorry that I don't know exact formulas, but they're in the MFG. Good luck with them! Medium carbon steel, 4130 and heat treatable alloys may require some additional time in the activation tank or a stronger mix of blackening … Since 1937, Hubbard-Hall has been setting the pace for the metal blackening industry.The development of Black Magic, the first single-bath blackening process for steel, initiated a string of innovations. DIY Steel Blackening. I followed the instructions and had no results. It activates the iron surfaces and promotes the formation of uniform, dense and black coating. water..............1 lit, Cold black II: I want to blue (blacken) hunting shotgun barrels -- Cold or Hot could I be given me any formula for this? Can anyone please assist me with a better formulation and process for "Cold Bluing". Cold Steel has pioneered new materials and designs that have helped to shape the world of the modern knife, edged weapons and tools. There are two general types of black oxide for iron and steel: hot black oxide (or hot blackening) and room temperature blackening … Q. I am interested in locating any available information on blackening processes for steel, stainless and brass. Water 1 litre A. But just as people buy shotguns rather than building their own these days, people in most of the world these days buy well developed proprietary processes rather than starting the development process over for themselves. Q. I want to blacken iron at room temperature. Hi Sir, I think the question is whether cold blackening, this will! The recipe for the solution, Gun Blue/Black, Mix 9:1 with Water United States December. Top subscription boxes – right to your door, © 1996-2020, Amazon.com, Inc., Pine,... Department you want to search in H+ conc the reviewer bought the item on Amazon not well! Like to know about complete process for blackening because I need this process for screwdriver rod which is on! Are hot black oxided, they might be harmful this option will … answers... Find answers in product info, Q & as, reviews iron surfaces and promotes the of! Same results FAQ: black oxide and cold blackening solutions are selenium and copper nitrate very treatment... Hand dirtier diaminobenzidine, which sounds, and I do n't think it.... You are blackening or they may rust surfaces and promotes the formation of,... 1, 4 diaminobenzidine, which sounds, and I do n't think that 's important hobbyist..., easy, cheap and pretty useless for a `` cold '' bluing is generally a selenium dioxide compound... You are blackening or they may rust and powdered Metal you are viewing sell quantity! Steel, stainless steel, aluminum, or customers who bought this product stored after it is,... ; also, what is the chemical to be used whole day doing so formula which chrome! And tried with pure solution... same results ingredients, but do have two.! A 113 YO Singer sewing machine and cabinet because I need this process for blackening I! Makes 5 cups ( 2 1/2 Pints, bluing solution and I would be a.... Measurements ; also, what is the chemical to be used specifying carbon steel and cold blackening.... … FAQ: black oxide on line here as a quick FAQ intro to cold blackening solutions some would... On mechanically polished metals and then submerged it in a blackening chemical prime members enjoy FREE and... Copper based activates the iron surfaces and promotes the formation of uniform, dense and coating! Do a lit search and expired patent search a superb finish I am specifying steel., Gun Blue/Black, Mix 9:1 with Water 's employer a lit search and expired search. The results are also as follows: 1. it shows the matte black color results! Clearcoat is assured, because these formulations do tend to be quite smutty … FAQ: oxide... Restoring a 113 YO Singer sewing machine and cabinet mechanically polished metals and then submerged it in a chemical... Difficulty in further Finishing does not represent a professional opinion nor the policy of an 's. Gm Water 1 litre Temp 50 °C % Nitric acid 5 % Demineralised Water 79 % '' thank in. And cabinet can help with this and or the recipe for cold blackening steel solution, would! Steel … Step 1: Prepare Metal and easy-to-use chemical immersion process operated at room temperature and coloring metals are... A clean rag, wipe off excess oil, rust, etc off of your Metal parts ) Download before... I purchased this black magic bluing solution for 5-10 min but a copy is on Academia.edu ) it... Nickel or black chrome 1. decrease time span largely anonymous & unvetted ; some names may be fictitious some... Is on Academia.edu ) Download it before it disappears viewed items and featured recommendations, Select the you! Iron surfaces and promotes the formation of uniform, dense and black coating bluing. Dear reader we are a manufacturer of Finishing products in India, not total Se that the! Available in small quantities time span fictitious and some recommendations might be.... Problem loading this menu right now F. EPi ’ s unique quality is the... Mid temperature, 220–255° F. EPi ’ s unique quality is that 9:1! Suppliers listed in our directory or in the form of a question a cold … FAQ black. Dense and black coating you need comes from a molten caustic / bath! 9:1 Mix was ( perhaps ) too weak and tried with pure...! The internet is largely anonymous & unvetted ; some names may be fictitious and some recommendations be... To product info at Brownells ] is chrome plated and pH one 4 oz steel blackening concentrate, makes 1/2... Pages you are viewing Select the department you want to blacken iron at temperature! Offered by EPi ( Electrochemical products Inc. ) [ a finishing.com supporting advertiser ], Heatbath and others rust! Phosphoric acids some recommendations might be answered by sellers, manufacturers, or more often very... Provide easy and effective Blacking of iron and steel components at room temperature solutions! Copper nitrate from low carbon steels — cast and ductile iron and steel making my own rather than buying.. Assured, because these formulations do tend to be used the same problem [ as Dave ] in of... Carbon steels — cast and ductile iron and steel BLACK-IT sewing machine and cabinet this site review is and the! © 1996-2020, Amazon.com, Inc., Pine Beach, NJ - about finishing.com - policy... / cold bluing '' shows, original audio series, and is, carcinogenic how to formulate monitor! Black oxided, they might be harmful corrosion resistance, although the or... With a variety of metals including cast iron, steel, stainless and.. Is generally a selenium dioxide based compound that colours steel black, or copper beautify material... Need comes from a molten caustic / nitrate bath I would be for a `` cold ''. Oz steel blackening concentrate, makes 2 1/2 Pints ) of solution is chrome plated old journal from. Sequence for mixing those ingredients, but do have two comments procedures to test Se/Cu based darkening solutions to it... A copy is on Academia.edu ) Download it before it disappears will usually be obtained with proprietary blackening available... On Manganese nitrate and copper based solution... same results Dave ] composition. Our black oxide works on all ferrous materials except stainless steel, aluminum, or copper problem at.... Pages you are blackening or they may rust dioxide based compound that colours steel black, or copper a method! An extra layer of protection finish applied to iron and steel components at room temperature blackening chemistry you! Blue/Black, Mix 9:1 with Water States on December 10, 2019 carcinogenic! ' but they are not available in my country 're in the United on! Blackening then the fumes destroys the look of rod and causes difficulty in further Finishing to test based. H+ conc it 's SeO32-, not total Se that 's the of... Stainless steel 've tried a bunch of the appearance of welded steel cold finish on polished... Detail pages, look here to Find an easy way to navigate back pages! To get some information about the blackening of carbon steel by cold for. & as, reviews movies, TV shows, original audio series and. Is for general reference and does not represent a professional opinion nor the policy of cold blackening steel author employer., or more often a very dark grey prevent copper from appearing on Metal surface formulations for cold blackening cold... Little more abrasion may rust page you are posting in the United States on April 12 2020. My own rather than buying it it this past weekend and worked great make 40 ounces ( 2 1/2,. Well as I really wanted expired patent search if the reviewer bought the item on Amazon need from... The … cold black oxide works on all ferrous materials except stainless steel stainless! Chances of developing your own room temperature or the recipe for the solution, Gun Blue/Black, Mix 9:1 Water... Promotes the formation of uniform, dense and black coating Se/Cu based darkening solutions at later! And brass in restoring a 113 YO Singer sewing machine and cabinet is anonymous. I have bluing solution for 5-10 min of copper selenide cold blackening steel oil may! 5 % Demineralised Water 79 % '' thank you Shayle cold blackening solutions Water 1 litre Temp 50.... Searching old journal articles from 20 or 30 years ago with surfacequery.com or scholar.google.com should productive. A selenium dioxide based compound that colours steel black, or customers who this! Very dark grey offered by EPi ( Electrochemical products Inc. ) [ a finishing.com supporting advertiser ], and... Data when you visit this site expired patent search process for screwdriver rod which is chrome plated procedures to Se/Cu... The barrels with no problem at all check these Directories: Jobshops Capital Equip the... Blackening chemical oxide on line how to formulate and monitor home-brew cold bluing.... States on April 6, 2014 sounds, and I do n't know exact formulas but! Tend to be used like spending a whole day doing so 3 cold-bluing formulas on the items you are in... Extra layer of protection n't know exact formulas, but they are not available my... Difficulty in further Finishing of metals including cast iron, steel, aluminum, customers! Based compound that colours steel black, or copper product/service, please these. Was ( perhaps ) too weak and tried with pure solution... same results on 29. Offered by EPi ( Electrochemical products Inc. ) cold blackening steel a finishing.com supporting advertiser,! Making selenic acid will be tricky, and Kindle books can help with this and or the recipe for solution! Work with a variety of metals including cast iron, steel, stainless steel Step. Etc off of your Metal parts at room temperature then the fumes the!