Технология анодирование алюминия: Анодирование алюминия. Технология и реактивы анодирования

Анодирование алюминия и другие виды гальванических покрытий

Анодирование (электрохимическое оксидирование) алюминия и его сплавов с использованием современного оборудования и технологий. Черное, зеленое, голубое, белое анодирование.

Подготовка деталей к гальванической обработке и последующая чистовая обработка. Для оформления заказа необходимо направить в наш адрес чертежи изделий и количество. Стоимость анодирования алюминия рассчитывается исходя из площади поверхности обрабатываемых деталей. Качество гальваники Вы можете оценить, заказав обработку пробной партии изделий.

• Обрабатываемые материалы: алюминий и его сплавы.
• Габаритные размеры изделий (ДхШхВ): 1000мм.х500мм.х500мм.
• Требования к поверхности металла: чистая без следов ржавчины и окалины.

Теория анодирования алюминия

Анодирование — это процесс электрохимического оксидирования алюминия. Анодирование один из самых распространенных методов гальванической обработки. Процесс анодирования позволяет в широких пределах изменять качество поверхности обрабатываемой детали таких как коррозионная стойкость, электропроводные свойства, твердость, износостойкость и т. д. При анодном оксидировании происходит образование оксидной пленки и ее растворение электролитом. Для получения качественных анодных пленок на алюминии подбирают электролиты и режимы электролиза при которых скорость формирования пленки выше скорости ее растворения. В качестве электролитов используются растворы серной, хромовой, щавелевой и других кислот и их смесей.

В основном используется сернокислый электролит. Защитные пленки, полученные при использовании данного электролита, обладают высокими защитными и декоративными свойствами, высокой прочностью и хорошо окрашиваются. Не целесообразно использование сернокислого электролита только для обработки деталей сложной конфигурации или мелких претензионных деталей. Такие детали, а также сопряженные (сваренные, склепанные) детали анодируют в хромоксидном электролите.

Анодирование в хромоксидном электролите более трудоемко и менее экономично по сравнению с сернокислым анодированием. Процесс требует более высокого напряжения и строгого соблюдения температурного режима.

Электрохимическое оксидирование в щавелевых электролитах позволяет получать на алюминии и его сплавах толстые пленки с повышенными электроизоляционными качествами, кроме того цвет покрытия – от светло-желтого до коричнево-желтого позволяет использовать такие электролиты для декоративной обработки изделий.

Твердое анодирование

При твердом или глубоком анодировании толщина оксидных пленок на алюминии или его сплавах составляет от 40 до 300 мкм. Такие пленки имеют повышенную твердость, износостойкость и жаропрочность. Электро- и термоизоляционные свойства обработанных материалов также значительно превышают характеристики исходного металла. Недостатком твердых анодных покрытий является хрупкость, возрастающая с ростом толщины покрытия – детали, подвергающиеся ударным нагрузкам обрабатывать таким образом нецелесообразно. Твердость пленок зависит от материала, на чистом алюминии она выше – до 15ГПа, на техническом алюминии до 5,2 ГПа, на АЛ9 – 4,8 ГПа. Твердое анодирование проводится в сернокислых электролитах (раствор 17-30%). На деталях, подвергающихся твердому (толстостенному) анодированию недопустимо наличие острых кромок, выступов, заусенцев и т. д.

 

 

 

90000 Aluminum Anodizing Companies | Aluminum Anodizing Services 90001 90002 Aluminum Anodizing Companies List 90003 90004 However, anodize finishing can also be applied to metals like titanium, where it would instead be called titanium anodizing. 90005 90002 90007 Products Finished 90008 90003 90004 In architecture, manufacturers use the process to increase the structural stability and strength of elements like roofs, exterior surface panels, and window frames. In the automotive industry, aluminum anodizing is used as protective housing for exposed aluminum parts in auto shops, and to put the finishing touches on vehicle components like trim.Next, aluminum anodizing increases the strength of the protective outer casings of electronics like satellites, mp3 players, cameras, and more. 90005 90004 Food and beverage applications, both commercial and domestic, benefit from the resilience of anodize finished pots, pans, and other cookware and utensils. Finally, in industrial manufacturing, manufacturers perform aluminum anodizing on plant equipment like conveyors, electrolytic capacitors, and scales. 90005 90002 90007 History 90008 90003 90004 Anodizing got its start in the 1920s.First, in 1923 British citizens Guy Dunstan Bengough and John Macarthur Stuart received a US patent for their anodizing method. The British government later documented this finishing method, called the Bengough-Stuart process, in their defense specifications. They used it to create corrosion resistant coating on seaplanes. 90005 90004 Also, in 1923 the Japanese patented oxalic acid anodizing. They, and later the Germans, used this finishing process in architecture. Four years later, Gower and O’Brien patented their sulfuric acid anodizing process.90005 90004 A few decades later, between the 1960s and 1970s, builders began heavily using anodized aluminum in their architectural applications. During those years, aluminum anodizing became very popular. Since then, anodized aluminum building materials have been replaced by powder coated and plastic ones. Nevertheless, aluminum anodizing is still popular, and we are excited to see where manufacturers will take it in the future. 90005 90002 90007 Materials 90008 90003 90004 There are many applications for which non-aluminum anodized materials are employed.Examples of these metals include titanium, tantalum, niobium, zinc, and magnesium. 90005 90004 90007 Titanium 90008 is frequently anodized for the improvement of jewelry and other decorative pieces. Anodized titanium is increasingly used with wedding bands, because it is hard and elicits a low allergic response. 90005 90004 90007 Tantalum 90008 is material that, when anodized, manufacturers use to make capacitors and for decorative purposes. Manufacturers can manipulate anodized tantalum to exhibit a wide range of colors.They can also control film thicknesses by changing the anodizing voltage and temperature. Typically, anodized tantalum film thickness ranges between 18 and 23 Angstroms per volt. 90005 90004 90007 Niobium 90008 is another material that manufacturers like to anodize for decorative purposes. Anodized niobium is a common element of commemorative coins and jewelry. Like tantalum, anodized niobium is available in a wide range of colors and film thicknesses. 90005 90004 90007 Zinc 90008 is another metal that servicers anodize with alternative methods.Though they do not often anodize it, when they do, manufacturers use a process introduced by the International Lead Zinc Organization. This process creates an olive-green, hard, and corrosion resistant zinc. 90005 90004 90007 Magnesium 90008 is a material that manufacturers anodize on a fairly regular basis. Manufacturers may seal it using oil, wax, and similar materials. Anodized magnesium is popular as a primer for paint. 90005 90002 90007 Process Details 90008 90003 90004 To perform aluminum anodization, manufacturers may employ a number of different methods.However, in general, the process goes something like this: 90005 90004 1. First, manufacturers set up an electrolytic solution bath. They may or may not enhance this with dyes. 90005 90004 2. Next, they take a metal like aluminum and immerse into the electrolytic solution. 90005 90004 3. Once the metal is immersed, manufacturers pass a direct current through the electrolytic solution, causing it to release oxygen and hydrogen. 90005 90004 4. When this happens, the oxygen reacts at the surface of the aluminum, acting as an anode (positive electron) while the hydrogen reacts on its surface as a cathode (negative electron).These reactions manifest as a build-up of aluminum oxide (or a different oxide, if the metal is not aluminum). 90005 90002 90007 Design 90008 90003 90004 When preparing to anodize a part or product, manufacturers think about a number of aspects of the application, such as desired film thickness, desired film hardness, desired film color, and desired changes to the metal. Based on these considerations, manufacturers can decide on process details, like solution / dye composition, electrolyte concentration, solution temperature, acidity, and current voltage.To create thicker or harder films, they will use weaker solutions coupled with lower temperatures and higher voltages. To produce thinner or softer films, they will do the opposite. 90005 90002 90007 Machinery Used 90008 90003 90004 Manufacturers use a number of different systems in order to anodize materials. While they offer customers anodize kits, they most often use themselves anodize equipment including anodizing rectifiers and anodizing rectifier controllers. 90005 90004 90007 Anodizing rectifiers 90008 convert alternating current (AC) into direct current (DC).Manufacturers use this direct current to anodize parts that are corrosion resistant. That is because, when passed onto a structure, direct current stops corrosion. 90005 90004 90007 Anodizing rectifier controllers 90008 are digital controls that allow manufacturers to carefully manipulate anodizing operations. They are often paired with CNC technology and computer programming. With them, manufacturers can create anodized parts and products with precise layering and colors. 90005 90002 90007 Variations and Similar Processes 90008 90003 90004 To perform aluminum anodizing, manufacturers employ one of three main processes: chromic acid anodization (Type I), sulfuric acid anodizing (Type II), and sulfuric acid hard coat (hardcoat) anodizing, or hard anodizing (Type III).90005 90004 90007 Type I 90008 is the oldest and most frequently utilized anodize process. To make it work, operators match a reactive metal with an electrolytic process that uses chromic acid. (Chromic acid is a corrosive, oxidizing acid that is compatible with most aluminum alloys.) They initiate anodizing by attaching an oxygen-producing anode to the metal being treated and then immersing the metal into an electrolytic solution through which a direct current passes. Throughout the process, manufacturers increase the voltage of this current.As the anode produces oxygen, it creates an oxide film. 90005 90004 Type I is a good option for anodizing, but it reduces the thickness of aluminum only by .02 to .4 mils, which is significantly less than the rates of reduction possible with the other two types. Also, because the EPA (Environmental Protection Agency) has marked the emissions of chromic acid as harmful to the environment, the possibility of its use is limited. 90005 90004 90007 Types II and III 90008 both use another corrosive solution, a sulfuric acid solution.This solution, an acid formed from sulfur dioxide, is dense and oily. Both processes are quite similar, but they differ in terms of performance temperature and current density. One notable subtype of type II anodizing is bright dip anodizing. 90005 90004 90007 Bright dip anodizing 90008 is an aluminum anodizing process during which manufacturers brighten aluminum to varying levels of luster. It works best on raw aluminum. The harder the aluminum oxide coating manufacturers allow to build up, the brighter it will be.90005 90004 90007 Type III 90008 aluminum anodizing is performed at lower temperatures and at a higher electrical current density, which yields increased anodic growth and much harder surfaces. 90005 90004 Anodizing Types I, II, and III are all processes that can only be applied to aluminum and aluminum alloys. For anodizing of non-aluminum metals, manufacturers may engage in a variety of similar processes. Examples include chromate conversion coating, clear anodizing, color anodizing, black anodizing, titanium anodizing, and a number of custom anodizing procedures.90005 90004 90007 Chromate conversion coating 90008 mainly differs from anodizing in that it allows the electrical conductivity of aluminum to remain intact, rather that neutralizing it. 90005 90004 Most often, chromate conversion coating uses either hexavalent chromium or non-hexavalent chromium. The chemical compound hexavalent chromium, which contains chromium in its + 6-oxidation state, is, unfortunately, categorized by the EPA as a human carcinogen. 90005 90004 To avoid the issues attached to this categorization, many manufacturers use non-hexavalent chromium, an environmentally-friendly alternative coating material that meets the requirements of both the Restriction of Hazardous Substances and the European Union End-of-Life Vehicle recycling directives.90005 90004 90007 Clear anodizing 90008, the most common type of anodize coating, uses sulfuric acid and adds a hot water seal at the end. Manufacturers most often perform clear anodizing for automotive applications. 90005 90004 90007 Color anodizing 90008 is a process that manufacturers usually use for aesthetic applications. They usually perform this process after a piece’s initial anodization and sealing. To create colors like yellow, black, and white, manufacturers make use of either metallic salts or organic dyes.90005 90004 90007 Organic anodizing 90008 is an anodizing process during which manufacturers use organic acids, like malic acid, to anodize coatings. Manufacturers must be very careful and attentive when using this process. This is because these acids often cause the current to treat the aluminum with unusual aggression. Such treatment can lead to pitting or scarring. 90005 90002 90007 Benefits 90008 90003 90004 Aluminum anodizing and related anodizing processes offer product customers a wide range of advantages.First, the aluminum anodizing process leaves behind a strong coating that is longer lasting than something like paint or even plating. This is because paint is simply applied on top of the metal, whereas the anodized coating is made to become part of the product. Second, anodized coloring is unaffected by ultraviolet light; it will not fade. Next, aluminum anodizing is an environmentally friendly procedure. Anodized products are recyclable, and unlike organic coatings, anodized coatings do not pose a risk to the environment.Plus, the anodizing process itself is not harmful to humans. Another good thing about aluminum anodizing is the fact that it is cost-effective. Anodized products are inexpensive to make and prove to be a great investment. Finally, anodized products require very little maintenance, as they do not easily scratch and they do not show fingerprints. 90005 90002 90007 Things to Consider 90008 90003 90004 Get the best aluminum anodizing services available by connecting with a high-quality service provider.On this page you will find the names, profiles, and contact information of several aluminum anodizing suppliers we know and trust. Check them out by scrolling up; you will find them nestled in between these info paragraphs. 90005 90004 Before looking at them, we recommend you take the time to put together a list of your specifications, requirements, questions, and concerns. Do not forget to include things like your budget, your project deadline, and your delivery preferences. Also, before agreeing to work with anyone, make sure that they are familiar with and can meet the standard requirements of your products.If you are not sure what standards with which your anodized product (s) should comply, check with your industry leaders. They should be able to advise you. 90005 90004 Once you have got your list together, look over the manufacturers we have listed on this page. Based on which ones appear to offer services best matching your specifications, pick out three or four companies with which you would like to speak. Then, reach out to each of them to go over your application. After discussing your needs at length with each of them, compare and contrast your conversations.Consider which company not only offers the best prices, but also offers the best services for you. Finally, pick out which manufacturer is right for you, and get started on your project. Good luck! 90005 90004 90147 Aluminum Anodizing Informational Video 90148 90149 90150 90005.90000 90001 Aluminum Anodizing Process and Design Guide 90002 90003 90004 90005 What is Aluminum Anodizing? 90006 90007 Aluminum anodizing is an electrochemical process in which an oxide (anodic) layer is chemically built on the surface of the metal. This oxide layer acts as an insulator and can be dyed in a wide variety of colors. Anodizing provides surface corrosion protection along with an excellent substrate for decorative finishes. 90008 90009 90004 90011 Photo courtesy of Global Metal Finishing 90011 90009 90014 90003 90016 90005 What is Hardcoat? 90006 90007 Hardcoat is a highly abrasion resistant, non-conductive aluminum oxide (Al 90020 2 90021 O 90020 3 90021 -xH 90020 2 90021 O) coating that makes an aluminum surface harder than tool steel due to greater thickness and weight than conventional anodic coatings.Anodic coatings form an excellent base for dry film lubricants, Teflon, paint, and adhesives. 90008 90007 90028 Note: 90029 You can not hardcoat over hardcoat, anodize over anodize, build up hardcoat over anodize, chromic over hardcoat, or just add another 0.0005 «to the surface 90008 90009 90004 90005 Properties of Hardcoat 90006 90035 90003 90004 Hardness 90009 90004 65 to 70 Rockwell C, 850 to 900 DPH, harder than hard chrome plate 90009 90014 90003 90004 Color 90009 90004 Dark Gray to Black 90009 90014 90003 90004 Coating Thickness 90009 90004 0.002 «average, 0.015» for salvage purposes on selected alloys 90009 90014 90003 90004 Dielectric 90009 90004 Hardcoat is non-conductive and will withstand 800 volts per 0.001 «thickness. 90009 90014 90003 90004 Machining 90009 90004 Hardcoat can be ground, lapped, honed or polished. 90009 90014 90003 90004 Dyeing 90009 90004 Hardcoat may be dyed most colors but tends to come out dark. 90009 90014 90003 90004 Sealing 90009 90004 Hardcoat may be Dichromate, Ni-Acetate, hot water, or Teflon sealed.90009 90014 90003 90004 Resistivity 90009 90004 between 10 90082 6 90083 to 10 90082 12 90083 Ohm-cm 90009 90014 90088 90009 90014 90003 90016 90005 Design Considerations 90006 90007 Avoid the following when designing for an anodized finish: 90008 90097 90098 blind holes 90099 90098 hollow weldments 90099 90098 steel inserts 90099 90098 sharp corners 90099 90098 heavy to thin cross sections 90099 90108 90009 90016 90005 Coating Thickness vs.Corner Radius 90006 90113 90003 90004 Nominal Coating Thickness, inch 90009 90004 Radius on edge & inside corner 90009 90014 90003 90004 0.001 90009 90004 ~ 1/32 inch 90009 90014 90003 90004 0.002 90009 90004 ~ 1/16 inch 90009 90014 90003 90004 0.003 90009 90004 ~ 3/32 inch 90009 90014 90003 90004 0.004 90009 90004 ~ 1/8 inch 90009 90014 90088 90009 90014 90003 90016 90005 What is Chemical Conversion? 90006 90007 also known as: Chem Film, Irridite, Alodine, ChemTreat 90008 90007 Chemical conversion coatings are intended to prevent corrosion, improve adhesion of paint finish or other coatings, and for improved electrical and electronic applications where low resistance contacts are required. The primary difference between a Class 1A and Class 3 coating is thickness, since current passes more readily through a thinner current resistant barrier (coating).Class 3 is thinner. 90008 90009 90004 90009 90014 90003 90016 90005 Weldments and Welded aluminum parts 90006 90007 When two or more parts are welded together, acid is entrapped in the weld and the area around the weld. Color variations exist when a welding rod alloy is vastly different from the alloy used to make the part. Halos appear around welds because of the high temperature used in the welding process. The area around the weldment will be slightly lighter in color, causing the welded area to appear larger than it is.90008 90009 90016 90005 Masking 90006 90007 Masking is required where no build up is desired or when a part needs both anodizing & chemical conversion. All threaded holes, 1/4 «or smaller, are typically masked when hardcoating unless otherwise specified. Holes with heli-coils must be masked. Any dissimilar metal (steel, brass, bronze) or any form of plating will burn off in the anodizing tank unless masked. 90008 90007 90008 90009 90014 90003 90016 90005 Hardcoat and Thread Coating 90006 90007 Hardcoat thickness is typically 0.002 «(0.0508 mm). Half the coating thickness is build-up and half is penetration into the base metal. For the threaded rod on the right, the diameter increased by 0.002 «since half of the coating thickness (0.001») built up the diameter on each side of the rod. 90008 90009 90004 90009 90014 90003 90016 90005 Hardcoat Blind Holes or Through Holes 90006 90007 Through holes (TH on drawing at right) will hardcoat evenly up to twice the length of the diameter (X).90011 Blind holes (BH on drawing at right) will only hardcoat to a depth equal to the diameter of the hole (X = Y). 90011 90008 90009 90004 90009 90014 90003 90016 90005 Coating Thickness, Color and Alloys 90006 90007 See chart at right. Example: Alloy 2024 may have a max. coating thickness of 0.005 «and will be gray in color. 90008 90007 ++ Note: Coatings over 0.0035 «tend to chip and become milky in color and should only be used in the salvage of parts.90008 90009 90004 90009 90014 90007 Annodizing design guide provided by Anodic, Inc. 90008 90088.90000 Aluminum Anodizing | Industrial Metal Finishing 90001 90002 90003 90002 Anodizing is an electrochemical conversion process that forms an oxide film, usually on aluminum, in an electrolyte (chemical solution). The aluminum parts are the anode (thus the term «anodizing») and current is passed between them and a cathode, usually flat aluminum bars, through the above mentioned electrolyte (sulfuric acid is most commonly used). There are different types of anodize, most commonly referred to as Type I-Chromic Acid Anodize, Type II-Sulfuric Acid Anodize, and Type III Hard Anodize or Hardcoat from the Mil-A-8625 designation.Other less common types are phosphoric acid and titanium anodize. The anodize is a porous structure that grows out of the base aluminum and absorbs colored dye very well. This is done through a secondary operation with either an organic or inorganic coloring. Anoplate processes black, blue, red, gold, as well as small lots of green and gray using standard organic dyes. We also do electrolytic coloring (Anoplate’s AnoBlack EC & EC7) which produces a gray-black color using inorganic metallic salts.Any colored anodize is required to be sealed following processing in order to preserve the color. 90003 90002 Chromic Acid Anodize: 90003 90002 Chromic acid anodizing or type I anodize results in the thinnest anodic coat of the principal three types; typically on the order of .00002 «-. 0001» (20 to 100 microinches) per surface. While thin, when properly sealed chromic anodize affords the aluminum equal corrosion protection to the thicker sulfuric and hardcoat type anodize. Chromic anodize appears much grayer in color and being thinner absorbs less color when dyed.This limits chromic acid anodize as a decorative finish, however, it can be dyed black for use as a non-reflective, protective coating on housings for optical components. Even black dyed chromic anodize is lighter in appearance (grayer), than conventional sulfuric black anodize. In order to get chromic anodize to accept black dye, the temperature of the chromic acid must be raised, therefore, it is not done every day and must be scheduled accordingly. 90003 90002 90011 Chromic Acid Anodize Features: 90012 90003 90014 90015 Good for tight tolerance parts: will not change dimensions 90016 90015 Can be black dyed — other colors not practical 90016 90015 Good for Bonding 90016 90015 Non-Conductive 90016 90015 Good for welded parts and assemblies 90016 90025 90002 90011 Chromic Acid Anodize Applications: 90012 90003 90014 90015 Precision Machined Components 90016 90015 Aerospace Components 90016 90015 Welded components and assemblies 90016 90015 As a paint / prime base 90016 90025 90002 Boric-Sulfuric Acid Anodize (BSAA): 90003 90002 Boric -Sulfuric Acid anodize (BSAA) is an alternative to chromic acid anodize (CAA) due to the environmental, worker safety and health concerns and the related costs associated with continued use of hexavalent chromium-bearing processes such as CAA.Primary applications include aircraft and aerospace components. It is covered by MIL-A-8625, Type Ic and aerospace specifications including Boeing’s BAC 5632. It is used for corrosion protection and paint adhesion. Paint adhesion is equal or superior to chromic acid, and the process is more energy-efficient than chrome-based processes. 90003 90002 90011 Boric-Sulfuric Acid Anodize Features: 90012 90003 90014 90015 Good for tight tolerance parts: will not change dimensions 90016 90015 Corrosion protection 90016 90015 Good for Bonding 90016 90015 Non-Conductive 90016 90025 90002 90011 Boric-Sulfuric Acid Anodize Applications: 90012 90003 90014 90015 Precision Machined Components 90016 90015 Aerospace / Aircraft Components 90016 90015 As a paint / prime base 90016 90025 90002 Sulfuric Acid Anodize: 90003 90002 The sulfuric acid process is the most common method for anodizing.The sulfuric acid anodize process films range from .0001 «-. 001» thick. The overall thickness of the coating formed is 67 percent penetration in the substrate and 33 percent growth over the original dimension of the part. It is particularly suited for applications where hardness and resistance to abrasion is required. However, where parts are subjected to considerable stress, (such as aircraft parts), the possible presence of the corrosive acid residue is undesirable. The porous nature of sulfuric acid films prior to sealing is used to particular advantage in the production of colored surface finishes on aluminum and its alloys.The porous aluminum oxide absorbs dyes well, and subsequent sealing helps to prevent color loss in service. Although dyed anodized films are reasonably colorfast, they have a tendency to bleach under prolonged direct sunlight. Some of the colors are: Black, Red, Blue, Green, Urban Grey, Coyote Brown, and Gold. Parts can be treated chemically or mechanically prior to anodizing to achieve a matte (non-reflective) finish. 90003 90002 More on Sulfuric Acid Anodizing here. 90003 90002 90011 Sulfuric Acid Anodize Benefits: 90012 90003 90014 90015 Less expensive than other types of Anodize with respect to chemicals used, heating, power consumption, and length of time to obtain required thickness.90016 90015 More alloys can be finished. 90016 90015 Harder than chromic anodize. 90016 90015 Clearer finish permits dying with a greater variety of colors. 90016 90015 Waste Treatment is easier than chromic anodize, which also helps to reduce cost. 90016 90025 90002 90011 Sulfuric Acid Anodize Applications: 90012 90003 90014 90015 Optical components 90016 90015 Hydraulic valve bodies 90016 90015 Military weapons 90016 90015 Computer and electronic enclosures 90016 90015 Mechanical hardware 90016 90025 90002 Hard Anodize (Hardcoat): 90003 90002 Hardcoat anodize, while usually done in a sulfuric acid based electrolyte, is much thicker and denser than the more conventional sulfuric anodize.Hardcoat is specified for aluminum components subject to extreme wear applications where superior abrasion resistance is needed, or corrosive environments where a thicker, harder, more durable coating is necessary. It can also be valuable where enhanced electrical insulation is required. Since hardcoat anodize can be built up to several thousandths in some cases, it makes this type of anodize a candidate for salvaging worn or mis-machined components. 90003 90002 90011 Hard Anodize Features: 90012 90003 90014 90015 Improved wear resistance 90016 90015 Non-conductive 90016 90015 Can repair worn surfaces on aluminum 90016 90015 Improve parts surface for slide applications 90016 90015 Can be black dyed; other colors less decorative 90016 90015 Finish is harder than tool steel 90016 90015 Can be ground or lapped 90016 90025 90002 90011 Hard Anodize Applications: 90012 90003 90014 90015 Valves 90016 90015 Pistons 90016 90015 Sliding Parts 90016 90015 Hinge Mechanisms 90016 90015 Cams 90016 90015 Gears 90016 90015 Swivel Joints 90016 90015 Insulation Plates 90016 90015 Blast Shields 90016 90025 90002 Titanium Anodize: 90003 90002 Titanium Anodize refers to the controlled creation of an oxide film on the surface of titanium parts.Titanium anodize is used for many reasons, from part identification in the medical device community, to corrosion control and bonding in the aerospace community. Depending on the grade of titanium alloy, it can be anodized many different colors, however Anoplate only offers this finish in a blue-gray finish. 90003 90002 Anoplate has been relied upon to offer this finish to AMS 2488 Type II and a variety of unique customer specifications. 90003 90002 90011 Titanium Anodize Features: 90012 90003 90014 90015 Used for coloring of titanium 90016 90015 Used to aid in looking for stress cracks in base material 90016 90015 Improved corrosion resistance 90016 90015 Improve adhesion of dry film lubricant or paint application 90016 90025 90002 90011 Titanium Anodize Applications: 90012 90003 90014 90015 Aircraft parts 90016 90015 Medical devices 90016 90015 Spacecraft components 90016 90025 90002 90011 Electrolytic 2-Step Anodizing — AnoBlack EC 90012 90003 90002 The purpose of anodizing is to form a layer of aluminum oxide that will protect the aluminum beneath it.The aluminum oxide layer has much higher corrosion and abrasion resistance than aluminum. The anodizing step takes place in a tank that contains a solution of sulfuric acid and water. After anodizing is complete, the parts can be immersed in an optional coloring tank, to achieve a deep black tone instead of the standard clear or silver finish. 90003 90002 90011 Applications: 90012 90003 90014 90015 Medical devices & instruments 90016 90015 Aerospace components (space vehicles) 90016 90015 Optics 90016 90025 90206 90002 For questions or more information on any of our finishes and custom coatings, or to get started on selecting the right finishes for your project 90011 Contact Us Today 90012.90003 90002 Contact Us Online 90212 90011 (315) 471-6143 90012 90003.90000 Design and Application Guide for Anodizing Aluminum 90001 90002 Anodizing is one of the most common surface treatment options available for aluminum. We’ve probably all seen anodized pieces used in a variety of applications, ranging from some of Apple’s iPhones and iPods to sprockets on motorcycles and karts. This article will walk you through the design considerations, as well as the applications, for anodizing. 90003 90002 While we can anodize other materials, we will focus on aluminum in this article, as it’s very widely used and holds a large percentage of the market share for anodized parts.The process is well-suited for aluminum parts made from a variety of different manufacturing processes, such as CNC machining, casting, and sheet forming. 90003 90002 Throughout this article, we will reference military specification MIL-A-8625 for many technical details. This is a common specification used in multiple industries, but it’s good to check for other requirements that may drive another specification. 90003 90008 Introduction to Anodizing 90009 90002 Anodizing is a process that converts the surface of a metal into an oxide layer through means of an electrolytic process.This natural oxide layer thickness is increased through this process to increase part durability, paint adhesion, component appearance, and corrosion resistance. The image below shows a few parts that have been anodized and then dyed different colors. 90003 90012 90002 The process uses an acid bath and an electrical current to create this anodic layer on the base metal. In simple terms, we’re creating a controlled and durable oxide layer on our component, instead of relying on the thin oxide layer that will create itself.It’s similar to bluing, Parkerizing, passivating, and other surface treatments for steels that are used for corrosion resistance and surface hardening. 90003 90002 You may have caught onto the fact that rust is also an oxide, so why are we intentionally «rusting» metal parts? Well, oxide is not always bad as long as it is the controlled and, in the case of steels, correct composition. 90003 90008 Types of Anodize 90009 90002 As I mentioned before, this article will reference MIL-A-8625 throughout to correlate with an industry specification.In this specification, there are three types and two classes of anodizing. The three types are as follows: 90003 90021 Type I 90022 90002 Type I and IB — Chromic Acid Anodizing 90003 90002 Type IC — Non-Chromic Acid Anodizing as a replacement to type I and IB 90003 90021 Type II 90028 90022 90002 Type II — Conventional coating from a sulfuric acid bath 90003 90002 Type IIB — Non-chromate alternative for type I and IB coatings 90003 90021 Type III 90022 90002 Type III — Hard anodize 90003 90002 Each type of anodize is used for a specific reason.Some of those reasons are: 90003 90040 90041 Type I, IB, and II are used for corrosion resistance and some degree of abrasion resistance. For applications that are fatigue critical, type I and IB are used because they are a thinner coating. One example of this is highly fatigued structural components on aircraft. 90042 90041 Type IC and IIB are used when a non-chromate alternative is desired for I and IB. This is often the result of environmental regulations or requirements. When developing systems in the defense industry, new contracts often required environmentally friendly options (type IC and IIB) because of the presence of hexavalent chromium in type I and IB.However, it is possible to get waivers where required by geometry complexities and extensive re-qualification efforts. 90042 90041 Type III is used primarily increased for abrasion and wear resistance. It’s a much thicker coating, so it will outperform the other types with respect to abrasion and wear. This coating may reduce fatigue life, however. Type III anodize is frequently used on firearm components, gears, valves, and many other components that will slide relative to each other. 90042 90047 90002 All types may help the adhesion of paints and some other bonding agents compared with bare aluminum.In addition to the anodizing process, some parts may be dyed, sealed, or treated with other materials, such as dry film lubricant. If a part is to be dyed, it’s considered Class 2, whereas an undyed part is Class 1. 90003 90002 These factors, as well as others, will be touched on in more detail below. 90003 90008 5 Design Considerations 90009 90002 By now, you have probably gotten the hint that there are some key elements to consider when designing parts to be anodized. These are easy to overlook (and often are) in the design world.However, knowing and sharing this information will give you a leg up when working with anodized parts. 90003 90021 1. Dimensions 90022 90002 The first factor we need to consider is the dimensional change associated with anodizing components. On a 90003.