Almbrite™

Additive layer manufacturing (ALM) uses various techniques to construct a three-dimensional object including extrusion and laser sintering based processes. Fine metal powders are deposited on top of a build platform and the energy beam is used to melt the shape of the desired component, the process then proceeds with a new layer of powder which is subsequently melted, such that the component is built up in a layer-by-layer fashion. Now abbreviated to just AM, there has been increasing demand for a post manufacturing process that smooths the surface in a practical, easy and cost-effective way. Mechanically smoothing the surface by blasting, rumbling or polishing are ways of doing this. However, they require line of sight or direct access to the parts surface.
Almbrite™ is a chemical immersion process, designed to modify and enhance the surface of additive manufactured parts, by removing foreign object debris (FOD), as well as smoothing and brightening the surface. The process can be used on parts of any geometry. A very significant and key advantage is that it is also perfect for internal configurations where high-quality surface finishes are achieved.
Mechanical, chemical and environmental advantages include:
• Can be used to treat both laser and electron beam powder bed additive components.
• Fatigue strength increases in the region of 75%.
• Does not promote hydrogen embrittlement.
• Achieves a roughness of below 3.2Ra
• Produces an even Ra regardless of geometry and complexity.
• Enhances detail definition.
• Complies with environmental regulations, including REACh
• A cost-effective process in comparison to a mechanical option.
• Does not use Hydrofluoric Acid (A very nasty acid!).
• A very controlled and repeatable process.
• Effective removal of contamination, surface powder and foreign object debris (FOD).
• Enables NDT methods to be used.
• Improves surface related functionality – e.g. for post machining op’s.
• Improves aesthetics.