Introduction of BLT's Green Laser Metal 3D Printing Technology: Enhancing Energy Absorption for Copper and Copper Alloys with a 532nm Wavelength

PanDen 2024-8-9 23:04 3D Printers

On July 12, 2024, panda3dp.com reported that BLT(铂力特) has officially launched a new green laser metal 3D printing solution, which addresses the challenges of low density and printing efficiency in traditional infrared equipment when processing copper and copper alloys. This advancement continuously improves the quality of 3D printed copper and copper alloy components.

Panda3dp.com observed that BLT(铂力特) had previously printed copper alloys quite some time ago.

Focusing on user needs, BLT has devoted itself to the research and development of a new copper metal 3D printing solution.

Copper and its alloys are widely used in industries due to their high electrical and thermal conductivity. SLM technology better meets the demands of various sectors for complex structural components. However, the high reflectivity and thermal conductivity of copper materials often result in low density and low electrical conductivity in 3D printed parts. To provide customers with superior solutions, BLT engineers have continuously innovated and developed the new green laser technology.

BLT's Green Laser Technology Overcomes SLM Copper Printing Bottlenecks

At room temperature, copper materials absorb less than 5% of laser energy at a 1064nm wavelength, while absorption at a 532nm green wavelength can reach up to 40%, which is approximately eight times that of near-infrared lasers. However, most industrial applications currently use 1064nm near-infrared lasers, leading to issues like low efficiency, bubbles, and splattering during copper metal printing. Furthermore, the energy from the reflected infrared laser beams can significantly damage the core optical components of the equipment. The high thermal conductivity of copper also causes the melt heat to quickly transfer to the surrounding powder, making it difficult to form smooth and regular melt tracks. As printing progresses, the already solidified layers may undergo remelting, exacerbating instability.

Relentless Progress: New Horizons with BLT's Green Laser Technology

The development of BLT's green laser technology not only marks a significant breakthrough in copper processing but also offers considerable improvements in the handling of precious metals like gold and silver. Due to their unique physical and chemical properties, precious metals hold great potential in the metal additive manufacturing market, showcasing tremendous opportunities for growth.

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