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June 2010
Plating for Performance
 Metal Plated Parts
      Additive manufacturing processes are renowned for their ability to produce complex, functional 3D objects rapidly and cost-effectively in low volume quantities.  Utilizing the latest in laser sintering (SLS/LS), stereolithography (SLA/SL) and 3D printing technology in conjunction with advanced secondary post processes, we are able to advance their capabilities beyond the norm.  This boost in performance can potentially help you avoid the constraints and costs of traditional production methods by using tool-less manufacturing instead.  One significant secondary post-process augmentation is structural or cosmetic metal plating which can provide the following benefits:
  • Increased strength, durability, & wear resistance
  • Cosmetic/aesthetic enhancements
  • Environmental & dimensional stability
  • Electromagnetic Interference (EMI) shielding
  • Moisture barrier & corrosion resistance
  • Flame retardance & UV block
  • Thermal tolerance
     There are two primary metal plating processes for additive manufactured parts:  vacuum plating and electroplating.  In vacuum plating a thin coat of metal composite is applied to provide an attractive high gloss finish that is ideal for cosmetic applications.  This process affects the exterior dimensions of the part minimally (approximately .0008 to .0014").  Electroplating can be applied in varying thickness (typically .004"), depending on your requirements for structural, electrical or magnetic performance.  Metal plating is available in both a technical (matte) and glossy finish in the following metals:
  • Nickel
  • Copper
  • Chrome
  • Precious Metals
Material Spotlight: LaserForm A6
 
     Utilizing SLS LaserForm A6 (steel/bronze matrix) we are able to produce complex, functional parts in a fraction of the time that it takes to  manufacture them with a traditional deductive machining (CNC or EDM) or casting process.  In its as-built state, this dense metal material has nice feature detail, moderately tight tolerancing,  good surface finishing, and it is very conducive to post machining, polishing, and plating for further improvements.  Like its plastic counterparts, LaserForm A6 aptly serves many different applications including functional prototypes, end-use short-run production parts, and tooling fixtures & jigs.
 
 
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DID YOU KNOW?
 David K. Leigh,
 CEO of Harvest Technologies, worked
 on development
and performance optimization of
laser sintering technologies in the early 90s.
 
Learn more about David and the evolution of the industry in next month's e-mail.

 
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