Anodized aluminum has undergone an electrolytic process in order to gain increased corrosion and wear-resistance, amongst many other benefits, due to the high susceptibility of untreated aluminum alloys to corrosion. Anodized aluminum products are important throughout industry and commerce.
Aluminum alloys are especially weak in terms of corrosion resistance because the introduction of certain alloying elements, such as copper, iron and silicone, to natural aluminum weakens the overall resistance of the metal to eroding external forces. This weakening can also happen if the aluminum already contains any impurities. Of the various series of aluminum alloys, the two-thousand, four-thousand and six-thousand series are the most prone to corrosion. Also spelled anodised, anodized aluminum is protected from corrosion through the thickening of the outer surface layer through the process of oxidization. Although this process actually weakens the structure of many other metals, such as iron that corrodes into rust, aluminum is actually strengthened by the formation of aluminum oxide. Thus, anodized aluminum is utilized in a wide range of industries including: electronics, for protective casings of mp3 players, cameras and computer systems; construction, for door and window trim, siding and roofing; commercial, for items such as cookware, appliances and furniture frames; and industrial manufacturing, for equipment and parts such as actuators, electrolytic capacitors and scales.
As the most commonly anodized metal, anodized aluminum can be formed using a variety of anodizing processes. The three main processes used are: Type I anodizing, or chromic acid anodizing, Type II anodizing, or sulfuric acid anodizing, and Type III anodizing, or sulfuric acid hardcoat anodizing (also known as simply hard anodizing). However, these are not the only anodizing processes used, just the most common. Other types include boric/sulfuric acid anodizing, thin film sulfuric acid anodizing, organic acid anodizing and phosphoric acid anodizing. For mass production of anodized aluminum, a method referred to as bath anodizing is commonly used. In bath anodizing, a tub is filled with the anodizing acid and the aluminum is immersed, with anodes, or electrochemical cells, attached to the surface layer. Next, a power supply is turned on, introducing an electrical current that moves through the acidic solution and reacts to the anodes, thus producing oxygen. A cathode is also attached to the tub’s side, producing hydrogen as oxygen is produced. The oxygen reacts to the surface layer of the aluminum and changes it into a thin film of aluminum oxide, the thickness of which depends upon the voltage of the electrical current.
Dajcor Aluminum Ltd. is the leading Canadian supplier of extruded, fabricated, machined, and anodized aluminum components. We are an ISO 9001:2008 certified company, located in Ontario, Canada, we are committed to providing the highest quality extruded aluminum components and outstanding customer service. We are known as the “one stop extrusion supplier” and look forward to taking on the most difficult projects. Our company boasts a world class production facility, skilled staff, experienced engineers and design team, variety of extrusion processes, and customized tooling. As a single source supplier, we are able to save our customers time and money and can offer competitive prices and quick turnaround times.
As a leading supplier, we serve a diverse range of industries including automotive, renewable energy, medical equipment, military, recreation, consumer products, and more. We are able to meet a diverse range of profiles demanded by our customers. Our 190,000 square foot facility has many value-adding services including cutting, drilling, deburring, milling, punching, taping, countersinking, polishing, bending, tumbling, bright dip, satin and electrolytic anodizing, wet and powder coating, and painting. Anodizing is available in multiple finishes including bright and satin clear, gold, bronze, brown, black, nickel, stainless steel, titanium, brushed nickel, and electrolytic color.
Our team at Dajcor Aluminum Ltd. has over 200 years of combined experience in aluminum extrusions and has produced over 30,000 custom aluminum profiles. We can handle both large and small orders and offer free, no obligation quotes and friendly service. We are committed to being customer driven, quality driven, and convenience driven in all we do. Our company is committed to providing the highest quality extruded aluminum components and flexibility of the services we offer to meet the unique needs of all of their customers. For more information call Dajcor Aluminum!