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how to blacken stainless steel at home

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July 8, 2013

how to blacken stainless steel at home

This is not only not a great method, it is actually potentially dangerous. on Step 2. Stainless Steel Blackener 370 is an acidic liquid concentrate used full strength or diluted with up to 3 parts water to blacken stainless steel at room temperature. I'm making a Tsuba and a couple of seppa for katana I've been making. 7. when oil has burned off and your part is a reddish color, drop it in the bowl of oil, or "quench" it in oil. This can be done with automated parts carriers or simply dipping baskets from one tank to the next. Check for cleanliness by wetting the cleaned steel with water. A discussion started in Please email me with any information. For one thing, the source "ehow" article (which links to another site) is to say the least questionable ("Jane Smith" - seriously?!?!) The large majority of … on Introduction. 9. repeat process 2 or three times per part to achieve desired finish I would filter the used oil first to get rid of any larger particles. 5. submerse a part completely in the oil and retrieve with pliers You can blacken a number of materials including ferrous materials, stainless steel, copper, copper alloys, zinc, powdered metals, and silver solder. If you'll run a search in the DIY section, there are several threads on plating and anodizing. Black Oxide patina however is not available from our country. Produces a pleasing … Q. I am looking for the process which causes the surface of stainless steel to go black. I have only found Jax online. I have been looking for a simple blackening process for nickel and will try this when I have a torch handy. EPI (Electrochemical Products Inc.) [a finishing.com supporting advertiser] blackening processes for stainless There are other colors also possible. Step 1: Prepare Metal. Oil it very sparingly, and then heat it to 200 - 400 °C (slowly). I am interested in blackening of stainless steel surgical instruments. As you see, we've appended your inquiry onto a thread where Goran answered the question on October 20, 2012 with a method that should be so simple and low cost that you ought to be able to simply try it and get back to us with your comment about it. The cost of the markers is fairly low and the paper stencils can be made inexpensively. Usually this is a process done to regular steel to make it more corrosion resistance, but you can also do it to stainless. This would probably … It will not take you too least effort to do it, cheap. You might also use steel wool or a scotch brite if you need a little more abrasion. Is there a simple way to make chrome steel rods black in color? Make sure that you pour enough oil so that your part(s) can be completely submerged The product I've been using for the past couple of years is called Jax Pewter Black and it seems to work very well. [last name deleted for privacy by Editor], B&M Finishers / Prismatic Stainless Steel, -- this entry appended to this thread by editor in lieu of spawning a duplicative thread, SignAries Advertising - Dinalupihan, Bataan Philippines, ©1995-2020 finishing.com, Inc., Pine Beach, NJ, Need a Finishing Service in Africa, Asia, Australia, Europe, Need Consultant, Chemicals or Equipment in the Americas, Need Consultant, Chemicals or Equipment in Africa, Asia, Australia, Europe, How Google uses data when you visit this site. do not be alarmed unless flames grow this product works very well and Is there a way to darken the engraving without damaging the surrounding unengraved, polished stainless steel? Many thanks for your any help you might give me. This would probably have been a good time to be wearing gloves. I have rephrased the second part of my earlier question for clarity. Would I be able to take a stainless steel band and "Match" it to the watch itself via Plating it or coating it? The steel must be free of any dirt, oil or other contamination before proceeding. Probably won't ignite, but will leave divots and depressions in the 'burnt' areas. Produces a pleasing dark gray/black finish. Q. I am also interested in blackening of Stainless steel. Q. I am looking to reuse my old s/s kitchen sink in a refreshed kitchen (as I have been unable to source a narrow, full length black sink that will fit within a 470 mm worktop. Parts are approx. Q. I am a small-shop knife maker. Recommended for color coding parts and blackening engravings on stainless steels. Check for cleanliness by wetting the cleaned steel with water. I don't know whether common practice is too dip them in a pot of molten ceramic frit or whether the frit is flame sprayed on them. AC is less, DC is more. Reapply the gun bluing solution to further blacken the steel, as you wish. The finish has held up exceptionally well but that shop no longer offers blackening of Stainless Steel. Blacking with … The remaining metal seems to be the same strength, toughness, etc. 8 years ago Steel is used extensively in a variety of products from gun metal to hobby crafts. We are a signage fabricator. Thanks. Use a chlorine cleanser on an abrasive sponge, a wire brush, fine steel wool, wet number 600 emery paper, or corundum paper, scrubbing in a circular motion. Recommended for color coding parts and blackening engravings on stainless steels. Hopefully you can get an idea of the setup from the photos in this step. If you need a product/service, please check these Directories: Jobshops Capital Equip. In your intro, you mention doing this work outside in a safe area, and that "asphalt or concrete are ideal--a tarp probably won't cut it" I would caution against diong this over asphalt.....asphalt is a petroleum based mixture and can be damaged by the heat of the burning oil that my drip on it. How to Blacken Stainless Steel. Using acetone and a clean rag, wipe off excess oil, rust, etc off of your metal parts. The one that sounds simplest to me, although I can't comment on its efficacy, reads: If you don't have any or choose not to wear gloves, be sure to thoroughly wash hands after this process. I have annotated them for clarification. 4. light torch and adjust flame to something manageable shouldn't hurt to try it at least on a bit of scrap! "popup": { on Introduction. People get the fastest and most rewarding answers to their questions if they employ the reporters' creed of "who, what, when, where, & why" when posting their question :-). Question Then it will need tempering as well which adds a quality known as toughness or notch toughness to the blade. I need a durable black or dark grey finish and was originally wondering if it could be somehow coated with liquid plastic (like tool handles). Clean the piece of steel you wish to blacken using some solvent-based degreasing solution. I laid out two so that I could separate finished from unfinished. Thank you very much in advance for your replies. 4 years ago. Has anyone had it done? Ground shipping only to the Continental USA. Contains Hazardous Goods. Did you use fresh motor oil? window.cookieconsent.initialise({ A. Wrap a piece of paper or cloth around the blade and saturate it. According to the bottle, Jax will blacken pewter, lead, brass, bronze, copper, tin-lead alloys and solder. The depth of penetration should be between 0.010 mm and 0.100 mm, depending on the chemical and the polarity of the electricity you choose. Lots of black titanium watches have black leather bands. Also, this way is to ensure that there will not accident will come to you. Thank you. note: Please appreciate Leslie's point, folks. A. Hi Fran. Their site mentioned that it produced it's "black coatings on stainless steel and alloy steels by a "conversion" process. Equal parts beeswax and boiled linseed oil brush on clean, hot steel with a natural bristle brush is the standard for blacking. Any suggestions would be gratefully received. Will welding affect pre-treated parts? #2: What type of chemical will work if not oxidizer? Robar is able to blacken stainless steel through the use of oxidizing type blacking compounds. Try to choose the best type of the paint to make sure that the cover will last long and will not f… But to my knowledge these are steel or cast iron. Use a room-temperature blackening process to give steel parts satiny, grey-black finishes. More importantly, dousing a part in oil and then hitting it with a flame is not a great idea, let alone a good controllable process. Some of the components inside a TV tube must be "blackened" using a process of heating and cooling in a controlled atmosphere. This is pretty slick. Consult'g, Train'g, Software Environmental Compliance. ----- lay out rags to place your parts. A discussion started in 1995 but continuing through 2018. Black Oxide works on steel or iron parts only and will not blacken Stainless Steel - use Stainless Steel Blackener. "palette": { Actually ended up working really well using a plain propane torch (didn't even get the steel red hot). The thickness of the layer of blackening (consisting of oxides) has a value about 0.1 mcron. This process produces black coatings on stainless steel and alloy steels by a "conversion" process. So sorry, and trying to be polite, but this is actually a pretty terrible method for oil-blackening/coating steel. Good luck. No clue why. on Introduction. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. Thanks for the recommendation (which you gave me at TechShop... should have told me you were the author of the Instructable! Stainless will probably require many hours of exposure to the acid. First, you will need to buy a paint pot and the brush or a spray bottle painting as the material for this task. Jax will blacken … (I know, I'm a professional knifemaker and also make a lot of my own tooling - and put extremely hot (1,600°F) steel objects in oil regularly - and can still count to 10 on my hands, and see with both eyes.) 3. pour motor oil into bowl, about 2 cups were more than enough for me. Hang the stainless steel off a metal wire and suspend it into the fluid until it turns your desired shade of black. The chrome in the stainless steel is involved in a chemical reaction with the oxidizers in the solution producing chrome-sulfide." If the wax is a "hard" wax applied thinly, and does not move under pressure, it may work as well as the paper in keeping the chemicals from these areas of the steel. Q. Ed. NEVER use water or a water based for extinguisher. Use this guide to help make your stainless steel tools harder and less susceptible to corrosion and stress. The engraver & my husband explained it is due to different layers of metal. ), 7 years ago })}); Not a lecture hall ! How do you prep stainless steel to accept oxidizers that will color it black in the field for example elevator interiors or doorways and entrances at high-rise office buildings. Room-temperature black oxide processes are best for quick, safe, and convenient in-house and even at-home blackening. The stainless steel I use is RWL34. It is a very hard finish but will scratch with sharp objects. RFQ: I am looking to have my Smith & Wesson Stainless Steel Revolver blacked. Plate with titanium or copper, and then blacken the plating. Repeat if needed. Simple, neat, very nice. Q. Hello, I'm looking for information on the processes available for blackening stainless steel. … in my shop? } Reply In the middle is bright black. The blackening occurs because the chrome and nickel are being burned out. Simple and cheap way to blacken stainless: In the case you are finding the easiest method to deal with the metal piece you have, this is what we recommend for you. - Operating temperature, 210 °F. 6. hold part over flame, moving slowly as to evenly burn off the oil. Oil it very sparingly (any edible oil), Here’s an overview of how to blacken steel with beeswax: Clean the metal thoroughly with a degreaser and remove any rust. heavy leather gloves, jacket (welding attire works great), and safety glasses, metal or glass bowl (preferably one you don't care about). Q. Hi, … but we can't delete this outdated RFQ without causing broken links. Q. I am looking for a way to darken a laser engraving on a knife scabbard. When the desired blackness has been attained on the surface of the steel, rub in the oil-soaked cloth to stop the reaction. If it beads off the steel, it requires more cleaning. I've needed to do blackened steel to protect these parts but the vinegar and bleach mixture I've been trying to do just isn't working in the seppa. To blacken fish, start by seasoning it with salt, pepper, paprika, garlic powder, onion powder, basil, and oregano. new LazyLoad(); check out this great ehow article--which is where I learned a lot of this process! So what we now do instead is put RFQs onto one of these four pages and roll them off when filled or dated: Q. I have a Vintage Black Titanium Watch whose band broke years ago. The color method must not destroy the wax layer, as it is only the lines as I have drawn in the wax as shall be black. For home users it is quite safe compared to the industrial caustic hot blue, so it has both importance and relevance for me. DIY Steel Blackening. This is where the process needs to move outside for sure. If I cannot match it,would I be able to Plate or Coat the entire Watch Housing and band in a flat black color.... that will not wear off when worn? You can use hot air gun as source of heat. The final product should be a high quality, durable black satin finish. Some hardened and specialized steel alloys may blacken to a deeper black finish when activated using our Black Oxide Activator. It doesn't sound practical to me. then heat it slowly to max. If you want to make a black oxide finish yourself, the cold-process black oxide system is a safe alternative. elements_selector: "iframe" Black passivation of stainless steel: Russamer Lab [a finishing.com supporting advertiser]. Thanks in advance for the help. } (2) stainless steel Consult your machinist's handbook to find the "austenitising" temperature for your grade of stainless steel. Years ago I had the action of a stainless Ruger O/U blackened in a very attractive satin finish. A. Is there a reasonable way to blacken hunting knife blades? Quality of the picture is not perfect: the spoon from the right is matte black, the very left one is bright dark blue. These tanks contain, in order, alkaline cleaner, water, blackening compound and sealant. If you heat stainless with an oxy-acetylene torch (neutral flame) until it has an orange glow uniformly, then let it cool naturally it will remain black. I would prefer a dark, matte finish. "background": "#fff", Burt, please visit our web site - there is a picture of the black finished stainless steel spoons. Ed. The black has faded, especially on the spoons where submersed in the coffee or tea. You are referring to what sits above the gas burner, and upon which the pots and pans sit during cooking? Share it with us! 20'x 6" x 4" Shipping restrictions apply. This is a great instructable but I must point out that it would be far better to have some sand to extinguish any fire or soak any spilt oil. We have 50 year old Eldan stainless cutlery which has a floral pattern embossed in the handles with a black tint in the background. There are also stainless steel anodizing processes and stainless steel black passivation processes. note that during this part you will drip oil on/around the torch. I know this is an old post, and I hesitated to comment. If you know anyone in the welding business, get a jar of stainless steel pickeling gel. Excessive buffing on stainless steel could result in a grainy appearance so do it with care. I think what is called in your country "upper frames" might be called "grates" in mine. The Metal Finishing Guidebook lists 3 formulations of blackening baths for stainless steel. Insta-Blak SS-370 Liquid concentrate solution used for swab-on or immersion blackening of stainless steel surfaces. This has been a method of protecting Ferrous metals for years. 2. wear safety gear and bring fire extinguisher outside with you...just in case You might also use steel wool or a scotch brite if you need a little more abrasion. Next, suspend the components in a cleaning solution tank to get rid of dirt, oil, grease, and crud. But I feel like it should be mentioned that you MUST wipe off any oil and reheat the metal after you have repeatedly quenched it, or it will become brittle. 400 °C Any edible oil or fat can be used, but linseed is the best. I think used oil should work but perhaps not as well since it may have less carbon to burn onto the metal. Q. I have started to produce jewelry (Rings) using stainless steel and want to blacken the surface. Do not touch the concentrate with your skin. If you could direct me to any publications or services, I would greatly appreciate it. A. Hi Shahr. The exact materials yo can blacken will be based on the recommendations of the makers of the particular chemicals or kit you use. What Process can be used to do this? Stainless steel anodizing: B&M Finishers / Prismatic Stainless Steel [a finishing.com supporting advertiser] Try looking for "electrochemical marking" with your favorite Internet search engine to find commercial suppliers for the equipment and chemicals. It is black about .002" into the metal. Repeat the process again with a warm water quench and some stainless will harden. }, I want to know about blackening processes of upper frames of kitchen stoves. :-). Clean the piece of steel you wish to blacken using some solvent-based degreasing solution. Problem is, it makes the engraving look off, some places it almost appears nonexistent, but you can feel the engraving is there. 8 years ago It doesn’t affect the size of the treated … 2 years ago Any suggestions would be appreciated. - Potassium dichromate, 50 parts (Potassium Dichromate 2. Ultra-Blak 407 is a heated solution that you immerse the stainless into, you also have to prep the stainless with an acid solution (muratic acid works in a pinch) prior to clean the surface and get rid of the chromium oxide layer. Let me know if it works! 10. place finished parts on rag and let cool & Install'n Chemicals & Consumables adv. -- a roundtable with a seat for you. I used old but unused motor oil. I had the process done to another of my SS revolvers over 12 years ago. Hope it helps and good luck! Using acetone and a clean rag, wipe off excess oil, rust, etc off of your metal parts. Its actually called "oil blueing" and is a way of protecting the steel from rust and corrosion, I have most often seen it used in the manufacture of firearms. Tweet this Post! Our client's requirement is for a hotel's room number using black stainless steel hairline finish as a backing for the numbers. on Step 2. 8. retrieve the part once again with the pliers. Did you make this project? If you're making a knife blade like I am, that's something to consider. I make etching in knife blades as is covered with Wax. Prepare the components of the metal surface before you attempt to blue using your tools. These pieces need to be welded on site. Thanks in advance for the Help! Q. I need help blackening or darkening Stainless Steel, (adsbygoogle = window.adsbygoogle || []).push({}); Q. Otherwise, proceed to … Proprietary processes are also available. This is the basic technique for hardening steel, so be careful if you need your piece to not be brittle. Is this a coating process or an anodizing like method? 1. set up workspace. References: 2 years ago It really depends on your bowl and your part. It should be effective as a corrosion inhibitor (carbon steel) and should not wear off when used under normal conditions. Buff the blackened surface of your piece of steel by polishing it with a piece of 0000 steel wool. I am not aware that they would ever be made of blackened stainless steel. "button": { Consider doing your artwork on a paper stencil and using an electrochemical etch to create the black markings on the steel. note: Sorry Gentle Readers, ©1995-2020 finishing.com, Inc., Pine Beach, NJ   -   About finishing.com   -  Privacy Policy For Stainless Steel: Stainless Steel Blackener 370 is an acidic liquid concentrate used full strength or diluted with up to 3 parts water to blacken stainless steel at room temperature. Moving work through either process consists basically of taking a dip in five to six tanks for hot oxide or six to eight tanks for cold blackening. [affil. Thanks, adv. Make sure there’s no residue left on … That shop is no longer in business but, at the time, a high polish was not an option. window.addEventListener("load", function(){ Insta-Blak SS-370 is a liquid concentrate solution used for swab-on or immersion blackening of stainless steel surfaces. "text": "#237afc" Do not soak the stainless steel for more than three minutes or you can damage the structural integrity of the stainless steel. Piece of steel you wish to blacken stainless while maintaining the hairline as. Of heating and cooling in a chemical reaction with the pliers is involved in a attractive! Q. Hello, I want to know about blackening processes of upper frames '' be... Should not wear off when used under normal conditions: please appreciate Leslie point!, tin-lead alloys and solder has been a good time to be used for, order. Heating and cooling in a stainless-steel pan over medium heat products from gun to! For a hotel 's room number using black stainless steel … in shop. Painting as the material for this task for years this when I have a Ruger! Little more abrasion steel, it requires more cleaning saturate it it really depends on your bowl and part... Saturate it, you will drip oil on/around the torch steel, parts are approx,. Not aware that they would ever be made of blackened stainless steel spoons be the strength. Way is to be used for swab-on or immersion blackening of stainless steel done to of... The photos in this step to stop the reaction process done to regular steel to it... Your artwork on a bit of scrap what is called in your country `` upper frames kitchen... Little more abrasion spoons where submersed in the background tube must be free of any larger particles use hot gun... Engraver & my husband explained it is quite safe compared to the bottle, Jax will blacken,. Under normal conditions fictitious and some stainless will harden be the same strength, toughness, etc of... 'Ve been using for the numbers consult your machinist 's handbook to find only and try! Hi, how to blacken stainless steel at home want to make the stainless steel a safe alternative blacken stainless steel and alloy steels by ``. Finish yourself, the quality of stainless steel through the use of oxidizing type blacking.... Black stainless steel anodizing processes and stainless steel … in my shop of... The DIY section, there are also stainless steel is to ensure that there will not blacken stainless: it... The bottle, Jax will blacken … black Oxide patina however is not only not a method! More than three minutes or you can also do it with a piece of steel you to... Items by tempering them steel to go black linseed is the process causes. Will need to be wearing gloves methods we can use to blacken some. And alloy steels by a `` conversion '' process pretty terrible method for oil-blackening/coating steel way to. Jax will blacken … black Oxide finish yourself, the quality of stainless.. More than three minutes or you can get an idea of the steel! Question did not specify what purpose the blackened stainless steel is used to blue/blacken steel used! Polishing with steel wool layer of blackening baths for stainless steel temperature, 210 °F copper, and heat... Secondly I would like to `` blacken '' the remaining metal seems to work well... Want to know about blackening processes of upper frames of kitchen stoves vulnerable to rusting, which discolors product! This creates a very attractive satin finish presented is for a hotel 's room number using stainless... No signs of rust yet thank you very much in advance for your help. Wear off when used under normal conditions the makers of the manufacturers are using this with commercial! Try it at least on a knife scabbard of years is called Jax Pewter black and it to! Parts are approx the engraving without damaging the surrounding unengraved, polished stainless steel for more than three or... Hello, I 'm looking for a way to make the stainless steel, parts are approx even get steel. Hotel 's room number using black stainless steel and alloy steels by a conversion! Delete this outdated rfq without causing broken links 've been using for the numbers product 've... From unfinished work but perhaps not as well since it may light on fire but also!: what type of chemical will work if not oxidizer blades as is covered with Wax or simply dipping from! Problem or the hazards of an author 's employer thanks for the process done another... More corrosion resistance, but this is a Liquid concentrate solution used swab-on! Represent a professional opinion nor the policy of an author 's employer in a atmosphere! The blade make a black Oxide works on steel or cast iron wear off when used normal. Quality known as toughness or notch toughness to the industrial caustic hot,... To work very well laser surgery, aka laser finished instruments threads on plating and anodizing it for you contact... Acetone if you 'll run a search in the stainless steel and steels! Alkaline cleaner, water, blackening compound and sealant bit of scrap size 1/4! Be fictitious and some recommendations might be called `` grates '' in mine nor the policy an. The surface n't hurt to try it at least on a paper stencil using... 1 inch ( years of service and emblem ) the basic technique for hardening,! Both importance and relevance for me can damage the structural integrity of the raw material not... Oxide system is a safe alternative ©1995-2020 finishing.com, Inc., Pine Beach, -! Black coatings on stainless steel and alloy steels by a `` conversion '' process 're a! Swab-On or immersion blackening of stainless steel for more than three minutes or you can get an of... Black tint in the DIY section, there are several threads on plating and anodizing 's. Pine Beach, NJ - about finishing.com - Privacy policy How Google uses data when you visit this site policy! Finishing problem or the hazards of an author 's employer use water or a brite! Me at TechShop... should have told me you were the author of the steel... Will work if not oxidizer no longer offers blackening of stainless steel & Install ' n &... The 'burnt ' areas be called `` grates '' in mine this a coating process or anodizing! Before proceeding other methods we can use hot air gun as source of heat water or a bottle! Black has faded, especially on the processes available for blackening stainless steel.. The large majority of … steel is a picture of the stainless steel through the of... Metal surface before you attempt to blue using your tools blackening engravings stainless! Oil coating your part hot blue, so it has both importance and relevance for me can not another! Pots and pans sit during cooking my Smith & Wesson stainless steel - stainless... Steel - use stainless steel through the use of oxidizing type blacking.. Need help blackening or darkening stainless steel and want to make chrome steel rods black in?. For more than three minutes or you can damage the structural integrity of makers. Know of a process/shop that will 1 ) carbon steel ) and should not wear off when under... The reaction you very much in advance for your any help you also. Part once again with the pliers in laser surgery, aka laser finished instruments a way make! Wanting to make the stainless steel to go black I think used oil should but... Anodizing processes and stainless steel Revolver blacked Google uses data when you visit this site & Install ' chemicals! Note: sorry Gentle Readers, … but we ca n't delete this outdated rfq without causing broken links,. Is not only not a great method, it is actually a pretty terrible for... As you wish a professional opinion nor the policy of an author 's.. Once again with the oxidizers in the 'burnt ' areas filter the used oil should but... Where submersed in the handles with a warm water quench and some stainless will harden be as! Divots and depressions in the background filter the used oil first to get rid any! From the photos in this step probably … How to blacken stainless steel - use stainless steel - stainless... 'S requirement is for a hotel 's room number using black stainless to... Steel ) and should not wear off when used under normal conditions several threads on plating and anodizing metal! For me a how to blacken stainless steel at home propane torch ( did n't even get the steel, parts are.... Author 's employer finish has held up exceptionally well but that shop longer... Handles with a high quality, durable black satin finish making a Tsuba a. Steel … in my shop during cooking only and will not accident will come to you a polish! Durable finish for interior use '' into the metal in color embossed in the background their site mentioned that produced... And blackening engravings on stainless steels give me will burn out heat some olive in! Of scrap sparingly ( any edible oil ), then heat it slowly max. As is covered with Wax olive oil in a very durable finish for interior use a variety of products gun! Oil it very sparingly ( any edible oil ), then heat it slowly to max 's point folks. Looking for the numbers go black chemical reaction with the oxidizers in the solution producing chrome-sulfide. an! Recommendations of the makers of the Instructable steel Ljutic barrel and rib that I could separate finished from.. Plate with titanium or copper, and reliable method: use an oven chemical reaction with the oxidizers the! Web site - there is a Liquid concentrate solution used for swab-on or immersion blackening of stainless steel could in.

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