How does aluminum become anodized?

LinetecAnodize_web-300dpiAnodizing is the most durable and long-lasting option for finishing architectural aluminum building products. An electrochemical process, anodizing produces a finish that resists the ravages of time and environment. However, there are important things to note about color selection for anodized aluminum.

Linetec’s two-step electrolytic anodizing process , where the anodizing and coloring of the aluminum occur in two separate steps, involves:

  • first placing the aluminum in a solution of sulfuric acid and water, then charging it with electrical current to form aluminum oxide on the surface.
  • then after anodizing is complete, parts can be immersed in a bath containing an inorganic metal such as tin, cobalt or nickel, which is deposited in the anodic pores to achieve color.

anodize-ring2-webAs a result, anodized finishes’ color choices range from clear to champagne to a variety of bronze tones to black. Linetec also offers a copper anodize, which involves an additional color tank, using actual copper to color the aluminum while isolating the copper in the coating. This process makes the copper color very stable and consistent.

Anodic oxide is not affected by ultraviolet light and is resistant to scratches, which help ensure color stability.

Due to the chemical process used to create an anodized finish, the possibility of color variation can be a concern during its application. Here are some factors to keep in mind to minimize the variation from your desired color:

  • Single source it. While the aluminum is anodized during the process, other metals (silicon, zinc, magnesium, etc.) present in the aluminum alloy can respond differently, resulting in unwanted variation of color. Reduce this risk by having all metal used for a project come from a single source/extruder, and from one lot of material. Also, avoid using aluminum with different alloys, as it will not yield uniform results.
  • Request a range sample. Because it is impossible to know the effect non-aluminum metals in the material will have on the final product’s color, be sure to ask your anodizer for a range sample before sending them your product for finishing. An anodize range sample is two anodize color chips for the same color, with one showing the lightest extreme of appearance to be expected on the finished parts and one showing the darkest. Be aware that the lighter the anodize finish, the more noticeable the range. Be sure to speak with any potential anodizer to see what range of variation they can guarantee. AAMA’s industry-leading standards specify that the range should not differ by more than 5 Delta E. A quality anodizer may be able to keep the range of a color even lower.
  • Bend then finish.  Anodic films are very hard, and as a result, most post-production bending causes a series of small cracks in the finish that give it a spider-web appearance. To avoid this, have as much bending and forming of the material completed before it is sent to receive its finish.
  • Weld with care.  If your metal has any welds on it, the anodization process can cause a halo effect of localized discoloration around them. Welding with the proper 5356 alloy welding wire and the lowest heat possible helps minimize this.

Select an aluminum finisher that utilizes automation in its anodize process to reduce inconsistencies. An automated system controls and monitors the process, including tank sequencing, chemical add, voltage, current, time and temperature, which ensures the most consistent anodize finish possible.

Learn more about anodizing by clicking here. For personalized assistance in choosing an anodize color for your aluminum building products, please contact Linetec’s regional sales managers, email sales@linetec.com or call 888-717-1472.

5 Things to Know About On-Site Finishing Repair and Restoration

Regardless of its durability, no architectural finish is completely maintenance-free. Periodic cleaning is needed and, in such cases, on-site repair and restoration may be necessary. Here are five things to keep in mind when looking into on-site finishing services:

  1. Start at the source   Whether it is graffiti removal, premature paint chalking and fading, or an anodized surface needing to be refinished, begin by talking to the original finisher to see if they can correct the issue with their on-site team. If this isn’t a practical option or they don’t offer field repairs, please contact us to discuss a plan for restoring your finish to its intended appearance
  2. USCourthouse-RightNewlyPainted-webGo with the pros  For any large refinishing project, consult a professional service. On-site restoration and repair of sizeable architectural projects require specialized equipment and knowledgeable professionals. As projects like these typically are performed on occupied buildings, an experienced partner also can help minimize disruptions with appropriate scheduling and communication.
  3. MadisonCourthouse-fieldrepaint3-webPerformance counts  Ask if the coatings being applied during restoration and repair meet the American Architectural Manufacturers Association (AAMA) specifications of the original finish application. One solution may be a PVDF resin-based air-dry coating that is field-applied by a qualified, professional finisher. Developed to meet green building criteria, these tough properties of these coatings resist marring and abrasion, and require little maintenance.
  4. Take care with touch-up  For minor scratches and blemishes, some applicators may supply a limited amount of touch-up paint. These are fairly easy to apply, but remember that they are only intended to cover a small area. It does not have the adhesion or durability of factory-applied coating, and will deteriorate at a faster rate. For best results, follow all instructions that come with touch-up paint and use it very sparingly. Also, when applying touch-up, use extreme caution as excessive use may void the original finisher’s warranty.
  5. Know your warranty  On-site project warranties vary greatly depending on the project and situation. If the issue being repaired is an applicator or manufacturer issue, the warranty most often will parallel the manufacturer’s factory warranty. For field repair and restoration work unrelated to a factory-applied issue, warranty options may be applicable depending on the base metal condition, base finish condition, site location or type of damage. Read carefully to understand the terms and timeline.

Learn more about Linetec’s on-site repair and restoration services by clicking here. For personalized assistance or to request a site visit, please contact Linetec’s field service manager, Dale Robinson, by emailing fieldservice@linetec.com or calling 888-717-1472.

Thermal improvement matters for energy efficiency in both warm and cold climates

SHORE MEM INT NJModel Energy Codes adopted across the U.S. are directing buildings to achieve more efficient performance. Whether trying to keep the warmth inside in cold climates or trying to keep the heat outside in warm climates – Linetec helps optimize aluminum architectural manufacturers’ systems to meet thermal requirements in all climate zones.

Thermal Barriers

Linetec enhances the thermal performance of architectural metal products, such as window, skylight, curtainwall, storefront and entrance systems.

Using a thermal barrier system improves performance by separating the aluminum profile into two parts, while maintaining the structural and long-term durability of the unit. The two methods for doing this are:

While both methods achieve high thermal performance, thermal strut also simplifies dual finishing, where the interior and exterior surfaces may be finished in different colors and formulations.

Curves and Corners

SONY DSCThere’s no need to sacrifice creative design for thermal performance or condensation resistance. Beyond linear extrusions, thermal improvement services are available for

Installing the thermal barrier in the metal after it has been formed helps minimize stress on the thermal barrier and ensures performance as specified.

Linetec performs all these services in the proper order, to industry-leading quality assurance standards, and in the same location to retain the full warranty.

Learn More

Learn more about thermal improvement and finishing services by clicking here. For personalized assistance in selecting the optimal performance for your aluminum building products, please contact Linetec’s regional sales managers, email sales@linetec.com or call 888-717-1472.

If you’re attending the American Institute of Architects (AIA) national conference and Architecture Expo, please visit us in person at booth #3353 in the Orange County Convention Center in Orlando. The exhibit hall is open April 27 and 28, 10 a.m.-4 p.m.; April 29, 8:30 a.m.- 12:30 p.m.

 

Visit Linetec at the AIA Expo

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Visit Linetec – Booth 3353

Discover the many services and specialty finishes that Linetec has to offer
for your next project

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Wood Grain Finishes – Gold Series

The beauty of wood without
the maintenance

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Terra-Cotta-Color-Rings5Terra Cotta Paint Coatings

The look and feel of natural terra cotta with the exceptional levels of performance and sustainability of a 70% PVDF resin-based coating

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Copper AIA bannerCopper Anodize

Copper elegance…
The classic look of copper, without the patina

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lobby-interior-shutterstock-webAntimicrobial Paint Coatings

Antimicrobial protection for high-touch surfaces and public building applications

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AIA samplePaint and Anodize Samples

Linetec can supply project specific color chips for any Linetec spec’d order or quote

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Rolled-TB-Extrusion-web136Stretch Forming Services & Thermal Improvement

Thermal improvement services on curved metal, both thermal strut and poured thermal barriers to meet the energy performance requirements of all climate zones

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Free Expo Pass

Be our guest! Use this pass for complimentary admission to the exhibit hall at the AIA Convention in Orlando.

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www.linetec.com    *    sales@linetec.com    *    715-843-4100

Antimicrobial Protection for Architectural Aluminum

people-quoteLinetec offers antimicrobial protection infused into 70% Kynar 500 PVDF resin based coatings for the use on high-touch, architectural metal products’ exterior and interior surfaces, such as doors, windows, curtainwall, entrances, panels and column covers.

Available in nearly any color options: standard and custom colors, mica and metallic coatings.

Available in thermal strut systems, where products can be manufactured with two-tone finishes. You can chose to apply the interior and exterior finishes that best match their your cost, performance and design requirements.

germ-hand-web24/7 Protection:
Antimicrobial protection is infused into select Linetec 70% PVDF-based fluoropolymer product finishes helping to inhibit the growth of stain and odor causing bacteria that may affect the surface of the coating. It protects product finishes from microorganisms such as bacteria that may cause odor and deterioration of the physical properties of the coating.

How it Works:
When moisture is present, the ion exchange mechanism in the antimicrobial finish is activated and silver cations are released. The released silver acts on odor causing bacteria by disrupting metabolism and reproduction

microbes

Bacteria cells

Whitepaper: Antimicrobial Protection for Public Building Applications

Antimicrobial protection infused into 70% Kynar 500 Fluorosurfactant Free PVDF resin based coatings for public building applications

FOR MORE INFORMATION

Email sales@linetec.com
Contact your regional sales manager
Phone us at 888-717-1472

Contact Linetec for your flat sheet needs

Linetec is a full-service quality source for your flat sheet and brake metal projects.

Some of the benefits you’ll receive by taking advantage of Linetec’s flat sheet service include:

  • Over 20 sizes of sheet in stock, and the ability to special order nearly any size and thickness required. Linetec Stock Sheet List
  • Both paint and anodize quality sheet available
  • Order in any quantity needed
  • Finished in nearly any color required, including custom color matches with Linetec’s in-house blending capabilities
  • Freight managed by Linetec through common carrier trucking. All sheets are protected with custom skids and polymask.

QUICK SHIP PROGRAM

  • Available in stock sheet sizes
  • Over 30,000 in-house blendable paint and anodize colors, including some mica and metallics
  • Orders less than 25 sheets

    Request Quote     –     Questions

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Linetec offers “Wood Grain Finishes – Gold Series” brochure

linetec-brochure-cover-webA new brochure showcasing Linetec’s recently introduced, decorative, wood grain finishes for architectural aluminum products. “Wood Grain Finishes – Gold Series” presents 14 finishes selected for Linetec’s standard Gold Series palette plus product descriptions and inspirational applications.

The high-quality appearance lends the finishes to interior surfaces, such as for window frames, door panels, column covers, shutters, furnishings and hardware. The coatings’ durable performance also makes them suitable for exterior applications, such as garage doors, fencing and soffits.

Achieving the look of wood without the maintenance, Linetec’s Gold Series palette includes:

  • American Douglas
  • American Maple
  • Cherry
  • Cherry with Flame
  • Colony Maple
  • Dark Walnut
  • European Cherry
  • Golden Oak
  • Knotty Pine
  • National Walnut
  • Oak
  • Oregon Douglas
  • Table Cherry
  • Teak

Earlier this year, Linetec teamed with Decoral System USA to expand its finish offering for architectural aluminum products. In our industry, we are seeing the use of real wood in applications like curtainwall mullions and interior window surfaces. The Decoral process gives us the ability to offer a similar look at less cost.

We see an opportunity for customers to offer the softness and warmth of wood in environments where a hard, cleanable surface is still desired, such as in health care and education facilities, or other high-traffic areas.

These finishes meet the stringent standards of AAMA 2604-13 for color uniformity, specular gloss, dry film hardness and adhesion, as well as resistance to impact, chemicals, detergents, scratches, corrosion, salt spray and fading due to ultraviolet light. The coatings also are fire retardant, and resistant to water and humidity. Unlike natural wood, the finished aluminum does not swell, rot, warp or attract insects.

IMG_4672Supporting environmentally sound practices, these wood grain finishes utilize a powder coat process that does not emit volatile organic compounds (VOCs). Wood grain finishes can be specified with aluminum utilizing recycled content, and may be recycled after its product lifespan.

Linetec will display the Gold Series wood grain finishes at GlassBuild America 2016 in booth #643. In addition to accurately portraying authentic wood grain, the Decoral process can provide customers with marble and stone finishes, floral and camouflage patterns, animal prints or custom logo graphics.

Enrico Piva, CEO of Decoral System USA, agreed and added, “We are proud to have an industry leader like Linetec add Decoral technologies to their new lineup of products and are excited to be a part of their success.”

For more information or to request a brochure by mail, please call 888-717-1472, email sales@linetec.com or visit http://www.linetec.com.