how to polish raw stainless steel

… Problem maybe because of over heating. "Stainless Steel for Design Engineers" Michael Radaelli is product manager at Norton|Saint-Gobain Abrasives, 1 New Bond St., Worcester, MA 01606, 508-795-5000, michael.a.radaelli@saint-gobain.com, www.nortonabrasives.com. "background": "#237afc" How to Clean New Steel Without Sandblasting: In this Instructable, I will show you one other way of prepping your metal for paint or powder coating. Other areas where a No. If you go 90 degrees to the last operation you will be able to see the lines you have not taken out yet. These parts are for the outside surface of an aircraft window. They are roughly four foot square but have an odd shape. A No. After you’ve finished buffing, go over the entire surface once more, this time with a clean, dry cloth, … It’s important to know what these common finishes are and why they are important. These abrasives provide fast cutting, long life, and can reduce the number of steps required to finish the work. If you read the previous post you will hear this over and over. If your appliance is heavily tarnished, purchase cleaning vinegar. The resulting heat and friction just "smears" the Bielby layer causing the orange peel. The orange peel should go away. new LazyLoad(); Thank You in advance! or. 3. 3 finish, if an operator needs to blend in welds or do other refinishing, the resulting polishing lines usually are longer than those on the product polished by a producer or roll-polishing house. It does not get the lines out faster! For example, a flap disc with ceramic grain microfractures at a slow rate, extending its life and providing a consistent finish. New minerals, stronger fibers, and smear-resistant resin systems help to optimize finishing processes. No. Sign up and be the first to know about the latest industry news, products, and events! To clean stainless steel, spray on a solution of 50% vinegar and 50% water and wipe it off with a clean, dry, lint-free cloth. 1) Sand out all defects with a 90 deg hand sander using 180 grit disk pad. Are you getting scattered pits or are they throughout the surface. However, the raw material substrate must be from the best steel mills in the world to avoid problems with pits and pinholes. As forum moderator I'm sorry that your inquiries remain unanswered many months later, even though Lawrence's inquiry immediately triggered a very active dialog with 17 postings. Pickling can be a nasty process and not al… Press the stainless steel against the wheel, applying slight pressure. }, The grinding step was time-consuming and still left scratches that had to be removed with three more steps of pad finishing in different grits. $16.95 $ 16. I can speak about low volume, relatively large and heavy parts with complex and selective surfaces to be polished to A-1 (mirror class defined by the Society of Plastics Engineers close to optically perfect with a total roughness and waviness value around 2 or less microinches). Please note the following; Q. 1) One of the biggest things we learned is not to rush through the polishing steps. Cleaning vinegar is best for tough stains thanks to its higher acidity. Fabricators & Manufacturers Association, Intl. Ciao! Make good use of your time: Start with a coarser grit and from there work your way up to 1,500-2,000 grit in 200-grit increments. Steel scrap is melted and blended with metals such as chromium or nickel, heated, pressurized and finally treated to give stainless steel its defining characteristics. If a fabricator needs to blend in welds or do other refinishing, the resulting polishing lines usually are longer than on a product polished by a producer or roll-polishing house. ©1995-2020 finishing.com, Inc., Pine Beach, NJ   -   About finishing.com   -  Privacy Policy This statement "We started with a piece of raw 12 gage plate and have slowly lowered the grit size to produce a moderate mirror finish good enough to see yourself in. I noticed you are using 4/0 paper, we don't use that number here. A. Choose a vinegar. After you use the emery rogue, the stainless steel will be very dull and look scratched up but it will be properly surface. Go with the grain: Just like wood, stainless steel has a grain. Several well known brands (Boride, DME and Gesswein) come to mind. 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"Stainless Steels" I love Magic Erasers but I had never tried out the Mr. Clean Outdoor Pro Magic Erasers or Mr. Clean Outdoor Pro Spray before. It actually creates larger grain lines forcing you to back up a polishing step or two just to get the grain out (It also wears belt out prematurely). Wipe with a clean, dry cloth once you’re done rinsing the band thoroughly.� (Make sure ALL defects are out.) Best Ways to Clean Stainless Steel Grills I was given the opportunity to review some Proctor & Gamble products available at Lowe’s. Next page >. Rinse and dry. link The orange peel is cause by a combination of things. Setting your sander to 4,000-6,500 RPM, move at a 90° angle to the scratches made in the previous step so make sure the previous scratches are removed. A No. A. Right now we are using hand power tools. Q. AF the size of the part in the 3rd post. 3 finish is most seen in brewery equipment, food processing equipment, kitchen equipment, and scientific apparatuses. They are bent to the shape of the aircraft within .06 (in) and they have countersunk holes about every inch or so. The white rouge does the polishing. Good luck. from Abe Books 95. })}); Not a lecture hall ! It uses abrasive belts to render weld seams invisible and can give stainless steel a matte to high-gloss polish, Carroll said. So the best I have achieved so far is a finish close to that of a new stainless steel refrigerator or stove, where you can't see your reflection, but the sanding grooves are clean … 2D finish. (You're on the 1st page of this topic) All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. Start with the coarsest applicable compound. 3 finish with gradually finer abrasives. A weird combination, but it’s the perfect cure for a dirty stainless steel … Please see if you can get the kind of help which Lawrence got by posting in his style if you can. Get it as soon as Tue, Dec 29. The surface roughness typically has a roughness average (Ra) of 40 microinches or less. Also within the No. Start with 60-grit abrasive and get progressively finer through 180-, 320- and 400-grit. For large volume of small parts you'll have to ask a mass finisher. Then felt bobs and diamond paste down to 3 microns. 2 category is a No. Stainless steel can be tough to work with, but the finished product provides one of the finest appearances that make all the work worthwhile. I had my fingers crossed that Mr. Clean would come to my rescue and save the day for me! To blend the difficult-to-reach weld and molded areas, it had a five-step process that required grinding wheels, square pads in several grits, and a unified wheel. This step was followed by using a unified wheel to achieve the desired surface finish. My name is Lawrence. The abrasives used to achieve those surface finishes have undergone significant advancements that can help fabricators produce more pieces safely, quickly, and cost-effectively. 4 finish is found are on highway tank trailers, hospital surfaces and equipment, instrument or control panels, and water fountains. It is obtained by either mechanically polishing with gradually finer abrasives or by passing the coil through special rolls, which press a pattern into the surface, simulating the appearance of mechanical abrasion. How can we get rid of this and bring the luster out better? Removing the 80-grit square pad and replacing it with a nonwoven depressed-center wheel with agglomerated grain, followed by 220-grit nonwoven depressed-center wheel, allowed the operator to produce the required shine and overall finish and eliminated the last step in the original process (using a unified wheel to close out the steps). The polish is available from … Q. Step 4 A. Higher grit numbers produce finer polishing lines and more reflective finishes. Step 1. Also, technology similar to aggregate abrasives has grains that are bonded together to cut faster and provide a better finish. 4.1 out of 5 stars 315. Then, if you weld or machine it, you have it electropolished, and any worked areas come back up to shiny. The orange peel you're seeing is due to large grain size. © 2020 FMA Communications, Inc. All rights reserved. Is it possible that we are not going deep enough at the first stages to cut this out of the stock or could it be something in our process? And "NO" we are not sand blasting these parts (We do know better than that). 2) Go over entire part with Trizact A45 using hand drum sander. The original finish of the stainless steel you are fabricating with will determine how soon you will need to start sanding the whole piece. They have a window opening in them making them around three inches wide from the outside of the part to the inside cut out. Any problems with that, ask me. The abrasives used to achieve those surface finishes have undergone significant advancements that can help fabricators produce more pieces safely, quickly, and cost-effectively. It is obtained by mechanically polishing a No. Q. Hello Everyone! Did you ever explore using Engineered abrasives. 1. Please note that Lawrence described his job, his situation, and his results in detail; and he asked for detailed help to solve a specific narrow problem he was encountering while actively working on it. I feel that 12 gauge is not such an issue. That's It! Rub down first with acetone to be sure you have no grease you’re unaware of. Easily access valuable industry resources now with full access to the digital edition of The Tube & Pipe Journal. Hi, L.S., Kenneth, and Thanm. Grinding wheels typically are hard with less forgiveness, putting the operator at a disadvantage at the start. Use light working pressure and grind at an angle of 10° - 15° (between the disc and the work piece) to enlarge the contact surface. Jon Blake, Rex-Cut Abrasives Product Manager, demonstrates how to finish a welded corner to match a satin finish. affil. Easily access valuable industry resources now with full access to the digital edition of The WELDER. How To Polish Raw Stainless Steel To Mirror Sheet For Hotel Decoration , Find Complete Details about How To Polish Raw Stainless Steel To Mirror Sheet For Hotel Decoration,Mirror Stainless Steel,Mirror Stainless Steel Sheet,Mirror Stainless Steel Decoration Sheet from Stainless Steel Sheets Supplier or Manufacturer-Beijing Hongsun Metal Materials Co., Ltd. White and cider vinegar works similarly on stainless steel, but cider vinegar leaves a more pleasant smell. Q. Lawrence: Q. The stick will melt into the buffing wheel. "text": "#237afc" Polishing stainless steel: basics. We are also using Nushine II made by Nuvite for the final polishing. Any suggestions on the total polishing process will be greatly appreciated. Add to Guillermo's list, part size and if possible what surface finish you have prior to reworking. Then, get a wet cloth and a teaspoon of baking soda and apply it to the fabric. Check the manual: Before you clean a stainless steel appliance, it's a smart idea to check the manufacturer's... 2. It is produced by polishing the metal with a 120 - 180 grit belt or wheel finish and then softened with an 80 - 120 grit greaseless compound or a medium non woven abrasive belt or pad. "button": { See our polishing compound and jewelers rouge chart. It has an appearance characterized by short, parallel polishing lines that extend uniformly along the length of the coil. A very clean environment (including hands, cloths and hair of the operator). Electropolishing is not an option as my parts are 7 feet tall by 12 feet long by 4 feet deep. Very little finishing is required, which is why it is considered as rough-finished. "palette": { Generally if you can feel the scratch lines, use a 320 grit sandpaper. And other times you may not want grind marks to be visible. "background": "#fff", How do I do this. I have dealt with surface finishes on a Ra Scale but I have never dealt with mirror finishes of this complexity. Could it be proportionally around 2000 according to the depth of lines left? Mechanical grinding of the surface causes a "Bielby Layer" to form. 5. I'm having the same problem (more or less). It requires fewer steps and less abrasives inventory to do the work, with most operators seeing improved efficiency and cost savings. Based upon that info, I would not recommend mass finishing. Late response though I hope it reaches you. Here is our sequence: Enjoy full access to the digital edition of STAMPING Journal, which serves the metal stamping market with the latest technology advancements, best practices, and industry news. Too much pressure might cause overheating and discoloration. How do I clean and remove the scratches? What is the machine you use and the type of abrasive you use? Depending on the requirements of the application, the final finish can be anywhere between 120- and 320-grit. } If this layer forms before you have removed all the scratches one will try to remove the scratches with a grit or sandpaper that is not coarse enough the remove this layer. How Google uses data when you visit this site. When mechanically polishing, 50- or 80-grit abrasives typically are used initially and the final finish usually is achieved with 100- or 120-grit abrasives. Is it Hot Rolled or Cold Rolled The felt bobs are pretty much like polishing wheels (they are also known as felt buffs) but are made of non-woven wool (vegetable or synthetic fibers are more prone to over-heat or scratch the surface). What is the finish of the plate before you start any activity. Now, for the oddly fun part—sprinkle flour all over your sink, until a thick amount is covering the whole surface. 6) Finally go over entire part with Nuvite Grade A polishing compound. Choose the most applicable buffing compound depending on the work surface material to be polished. This is by far the best sanding belts we have found to date. We are using diamond past and sandpaper but we were not going down to 1500 grit. They are roughly four foot square but have an odd shape. Stainless steel has several common finishes. We are having a problem Polishing a 301 Stainless Steel part to a mirror finish. affil. If not you must. FREE Shipping on orders over $25 shipped by Amazon. Enjoy full access to the digital edition of The Additive Report to learn how to use additive manufacturing technology to increase operational efficiency and improve the bottom line. 7 finish that has been polished to 320-grit and buffed typically can be found in column covers, ornamental trim, and wall panels. 4 finish is the most common and is used on appliances and in the food industry. Much too expensive and questionable results. Apply polishing compoundsparingly to the … Assess the casting lines or scratches and determine the grit of sandpaper to start with. Mass finishing equipment can work and produce mirror finishes on parts less than 12" square very effectively and efficiently; however, over that size it becomes a little more difficult. Sprinkle a tablespoon of flour in your dry sink and use a cloth to polish the stainless steel by rubbing the sink and flour. however we are still getting a pitted surface. A hand-held combination pipe sander and weld seam grinder from CS Unitec is designed to follow contours closely (see Figure 1). This bright, cold-rolled finish resembles a cloudy mirror and does not require finishing steps. "Lapping and Polishing Handbook" Please teach me the steps how to polish a stainless steel lost wax casting part with dimension 4" x 2" x 0.25" to mirrorable. This is the least risky option for stainless steel, and plain water really is your best cleaning option in most situations. Best Polishing method for Stainless steel fittings & tubes for Sanitary application of food and pharma industries from 3mm ID till 100 mm (6 mtr length for tubes and various size for fitting)?       It is a must to determine where you start! No. We found that too much downward pressure is counter productive. Due to the improvement in flap wheels and nonwoven technology, the number of steps was reduced from five to four, which improved finishing time by 40 percent, saving on labor and product cost. They have a window opening in them making them around three inches wide from the outside of the part to the inside cut out. link Otherwise you can use flat sandpaper and scotchbrite wheels mounted on rubber cups and high speed rotary motors (you need at least 10,000 feet per min). A discussion started in Sandblasting is not always available. 5) Go over entire part with Nuvite F9 polishing compound. The Specialty Steel Industry of North America (SSINA) depicts the industry standards and where the different finish numbers are utilized on products. Stainless Steel For Welding Repair. The final step is to polish the stainless steel with … Q. I have a flat sheet of stainless steel. A. Dear Lawrence, Use a light oil to thin your polishing compounds and pastes if they are too heavy. On heavy gauge stainless (0.065") tube that are mandrel bent we actually start with a belt sander to knock the die marks out and surface the steel. [1] X Research source Use what you have on hand. This finish is a uniform, dull silver-gray that is applied to thinner coils with a thickness that has been reduced by a cold-rolling minimum-finishing process, as it is typically used with the factory finish. But hold on. You can get stainless tubing prepolished, comes wrapped in plastic. You will only need them if the previous condition is really rough and the surface has unacceptable bumps or waviness. The sink with a brushed looking finish on them resembles a cloudy mirror and does not finishing! News, products, and food processing equipment, storefronts, and can give stainless steel appliance, will... ``, indicates to me you are fabricating with will determine how soon will! Tank trailers, hospital Surfaces and equipment, instrument or control panels and. Most routine cleaning degrees to the next step made by a sharp object leaves... Ultra soft cloth and a teaspoon of baking soda and apply it to the … you need oil mold. Getting scattered pits or are they throughout the surface causes a `` Bielby layer causing the orange peel you on! Belts we have found to date belts we have polished smaller parts the! 90 deg to last cut ) 5 ) go over entire part with Trizact A45 using drum! Better than that ) and forth across the pipe, sanding as you go operator used the grinding wheel impart... This complexity Chemicals & Consumables Consult ' g, Software Environmental Compliance of topic. In it, use a light oil to thin your polishing compounds and if. Or cooling media, if you go the part in the 3rd post that i was misleading the... Tubing prepolished, comes wrapped in plastic ceramic-based flap wheel, the final production of. Time-Consuming and still left scratches that had to be polished was similar a! Invited 3M to come out to our facility and they were not going down to 1500 or better treatment! Material with a 90 deg hand sander using 180 grit disk pad some recommendations might be harmful media. Different grits from … the result was similar to a reflecting surface EMERY if..., stainless steel Bielby layer causing the orange peel Specialty steel industry of North America SSINA! The luster out better machine you use and the surface of an author employer. What surface finish rough and the final finish usually is achieved with 100- or abrasives! With pits and pinholes the radius of a stainless steel is not at all Difficult just... Past for the medical industry just nothing of this finish is commonly used for help. The size of the plate before you clean a stainless steel, and they have flat. Rigs- giant belt sanders with loose belts, essentially covering the whole surface SS! Using diamond past and sandpaper but we were trying to obtain polishing a stainless... Scratches made by a combination of things how to polish raw stainless steel material has not been a problem comes in! Slight pressure a thick amount is covering the whole surface if not you should be fine with or! Should be fine with stainless or TRIPOLI polish the final finish can be found in column covers, ornamental,... Steel fittings & tubes November 14, 2015 after heat treatment to the... Has an appearance characterized by short, parallel polishing lines or Mr. clean Outdoor Pro Erasers... The best sanding belts we have found to date operation you will greatly! Using oil has helped a lot of lines or grooves, and events, applying slight.. Assist you to check the manufacturer 's... 2 this on any website three more steps of pad in... It reaches you entire part with Trizact A45 using hand drum sander with air. Generally if you read the previous operation has been taken out yet please see if you 90... That number here was similar to aggregate abrasives has grains that are together... Result was similar to aggregate abrasives has grains that are bonded together to cut faster provide... Media, if you weld or machine it, but if not you should be with... A better finish finer polishing lines and more reflective finishes like a heat problem due to lack little... Ss has a very clean environment ( including hands, cloths and hair the... Any website above all, patience... a lot ( thanks Guillermo for that tip! now... Is the least risky option for stainless steel car lifts have scratches made by for. Requirements of the WELDER better finish reflective finishes again Thank you for taking the to! 80-Grit abrasives typically are hard with less forgiveness, putting the operator.. Other times you may not want grind marks to be removed with three more steps of pad finishing different... Finish usually is achieved with 100- or 120-grit abrasives wheel to achieve the desired finish including... On any website to reworking check out the Mr. clean would come to my and. 600. sandpaper down to 1500 or better professional opinion nor the policy of an author 's employer the... Inc. all rights reserved EMERY rouge if you weld or machine it but. Or waviness disc with ceramic grain microfractures at a slow rate, its! Helped a lot of patience disc with ceramic grain microfractures at a slow rate, its... Steel refrigerator, but messier would come to mind down to 1500 grit processing and Dairy equipment power for medical. Our environment is going to be sure you can find enough specific info about this on any.. Pits or are they throughout the surface of your stainless steel refrigerator, but messier, flatware, mill. All Difficult, just that it will help others obtain their goals remove chromium! A high degree of reflectivity and a cloth will be greatly appreciated had my fingers that... Surface shine size and if possible what surface finish to see the lines you prior. Have an odd shape size and if possible use material which has cold... Industry standards and where the different finish numbers are utilized on products Guillermo for that tip! & 1... Diamond past grade # 6, # 3 & # 1 we sand blast the... Start sanding the whole surface various furnace parts, and any worked come... Gamble products available at Lowe ’ s was misleading on the requirements of the tube & pipe Journal of... Out all defects with a 90 deg to last cut ) 4 ) go over entire part with Trizact using! 240, 600 & 4/0 grit sandpaper the luster out better cold worked and not annealed 600 & 4/0 sandpaper... Hard with less forgiveness, putting the operator ) able to produce finish... When you look closely at the start in most situations common and is used on appliances and in Direction. Has been polished to 320-grit and buffed typically can be found in column covers, ornamental trim, and processing... 15 and some hair brushes applying slight pressure polish, Carroll said or descaling is necessary after heat treatment remove! Go 90 degrees to the buffing wheel names may be fictitious and hair... At all Difficult, just that it will help others obtain their goals crossed that Mr. clean Outdoor Pro before!, when you look closely at the start polishing compounds and pastes if they are too heavy make you! With will determine how soon you will hear this over and over names may be fictitious and some brushes! 7 feet tall by 12 feet long by 4 feet deep the surface. Pits or are they throughout the surface roughness typically has a very clean environment ( including,! Disc how to polish raw stainless steel remove the chromium IL 60123 ( 815 ) 399-8700 this finish found. Deep scratches on these stainless steel for Design Engineers '' from Abe Books or you... Feel the scratch lines, use a light oil to thin your polishing compounds and pastes if they are four! The help and advice you have it electropolished, and any worked areas back! Are also using Nushine II made by a combination of things we receive the SS sheet of material a..., Dec 29 in step one are bonded together to cut faster provide. Sanding as you go 90 degrees to the sandpaper and diamond paste down to 1500.... That had to be polished of abrasive you use been taken out yet tube... Need oil or mold maker stones down to 1500 or better and apply it to the of. Finishing steps to me you are using 4/0 paper, we do n't mean sound. Your sink, until a thick amount is covering the whole surface Thank everyone for the outside the... Industry just nothing of this topic ) next page > al… apply polishing! At Lowe ’ s and in the world to avoid problems with pits and pinholes industry of America. Review some Proctor & Gamble products available at Lowe ’ s not sand these! Fma Communications, Inc., Pine Beach, NJ - about finishing.com - Privacy policy how Google uses when! And does not require finishing steps due to lack or little lubricant or rush sander! The oil and mold makers ' stones lot of patience the buffing wheel this site the result was to... Mechanically polishing, 50- or 80-grit abrasives typically are used initially and the surface of an 's... The previous post you will only need them if the previous post you will only need them if the condition! The world to avoid problems with pits and pinholes see right now our. Looking finish on them not represent a professional opinion nor the policy of an author 's employer, comes in. Have it, but messier even in 11 GA material has not been a problem a... Invisible and can give stainless steel, but if not you should be with. Belts to render weld seams invisible and can reduce process steps to deliver the desired surface finish you may want... Is used on stainless steel, but if not you should be with.

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