Session Details

Session 10: Light Metals Processing

Abstract Number:

120

Aimed at designers, specifiers and applicators to understand alternatives ways to anodize ‎difficult ‎aluminum alloys. This process technology provides new options for finishing these ‎alloys and achieve ‎surface qualities that were not possible before. All this can be done in a ‎sustainable way.‎

Topics:

Light Materials – Treatments Optimizing Performance
Technologies for Improved ‎Performance or Increased Efficiency

The use of high alloyed wrought aluminum parts, including 2XXX or 7XXX series while also ‎including many cast aluminum alloys is currently a trend increasingly being more prominent ‎across many industries. Specifically, for vehicle applications, with a quest for providing E-‎Mobility options for reduction in weight without loss of strength, the movement to shift from ‎higher weight components to lower weight options is supporting the trend. ‎

Although many of these alloys are very capable to meet demands in terms of physical ‎strength versus the weight ratio, in their bare form they are not possible to use due to their ‎low corrosion resistance. Anodizing has long been known as a process to extend the service ‎life and aesthetics of aluminum and aluminum alloy components, however many of their ‎alloying elements of the fore mentioned alloys cause disruptions in the anodizing, coloring ‎and sealing surface finishing processes. ‎

The presentation will demonstrate a unique process technology and introduce a novel way ‎of applying a specially designed process to mitigate the negative effects of these alloying ‎materials. It will show how it is possible to achieve minimum anodize thicknesses despite ‎reduced processing times and avoid so called ‘Zero-Spots’. The result of this is a ‎homogeneous anodized layer that exhibits superior corrosion resistance and allows even ‎high silicon cast qualities to be colored with organic dyes. ‎

By utilizing the multi stage process principle the productivity and the efficiency of the ‎anodize line will increase significantly causing less scrap hence also lowering the carbon foot ‎print of the line in terms of lowering the energy requirement. Furthermore being able to ‎achieve high quality surface finishes even on high Si cast alloys, automatically opens new ‎applications, helping with the e mobility quest for a more sustainable future.‎
‎ ‎

NOVEL APPROACH FOR ANODIZING OF DIFFICULT ALUMINUM ‎ALLOYS FOR HIGHER SUSTAINABILITY

Can Akyil, Ph.D.

Global Technology Director, LMS

MacDermid Enthone Industrial Solutions