Session 10: Light Metals Processing
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.
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.