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Using a Green Laser Facilitates 3D Printing of Pure Copper and Copper Alloys

Metal additive manufacturing is finding its way into more and more industries, from aerospace and marine to electronics and automotive. It enables the design of more complex, lightweight and durable parts. Copper’s excellent electrical and thermal conductivity, resistance to atmospheric and marine corrosion, ductility and toughness make it one of the most widely used metal materials.

However, manufacturing with copper presents specific challenges, especially when using traditional laser powder-bed fusion (LPBF) techniques. Pure copper has a very low absorption rate for infrared lasers—less than 10%. As a result, high-power infrared lasers can lead to excessive vaporization and spattering, which negatively impact the final part. These effects include reduced material density, increased porosity, and diminished thermal and electrical conductivity. Additionally, when the reflected light is over 90%, it can damage the 3D printer’s optical components. 

This is where Addireen, a Chinese manufacturer, stands out. With cutting-edge green laser technology, Addireen’s industrial machines overcome the limitations of infrared lasers. Their machines can produce copper parts with a density of 99.8% and a minimum wall thickness of 0.08mm, significantly enhancing the quality and precision of the components, unlocking copper’s full potential in metal additive manufacturing.  

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