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Home3D PrintingMTC leverages AMCM's distinctive multi-laser beam shaping system

MTC leverages AMCM’s distinctive multi-laser beam shaping system

The Manufacturing Know-how Centre (MTC) has acquired the AMCM M 290-2 FLX, an industrial 3D printing system from AMCM, an organization affiliated with EOS

A key characteristic of the AMCM M 290-2 FLX lies in its twin nLIGHT AFX lasers. These lasers supply a novel capability to regulate their spot dimension, starting from a slender 85 µm to a wider 210 µm permitting for the creation of a shallower and broader soften pool throughout printing.  Consequently, the AMCM M 290-2 FLX, affords a number of advantages, together with sooner printing speeds, extra steady printing processes, and a discount in soot and spatter, says the corporate. These enhancements deal with limitations encountered with conventional strategies that depend on beam defocusing, shifting to a beam shaping strategy that holds huge potential.

Sina Trik, gross sales consultant for AMCM, EMEA, mentioned, “The UK manufacturing sector is on the forefront of innovation. Whereas the usage of supplies reminiscent of copper affords big advantages to product designers, producers nonetheless face challenges within the additive manufacturing course of. It’s all the time wonderful to work with MTC – a real thought chief in UK – to increase the sector of commercial steel AM.”

The MTC team visiting AMCM Starnberg to receive comprehensive practical training on the machine before it is delivered. From left to right: Chris Dalton, Alex Hardaker, Marius Christ, Christoph Seyfert, Fiona Schulz, Marius Hoyer. Photo via MTC.
The MTC crew visiting AMCM Starnberg to obtain complete sensible coaching on the machine earlier than it’s delivered. From left to proper: Chris Dalton, Alex Hardaker, Marius Christ, Christoph Seyfert, Fiona Schulz, Marius Hoyer. Photograph by way of MTC.

Technical capabilities of the AMCM M 290-2 FLX

The AMCM M 290-2 FLX system boasts “full discipline overlap,” that means each lasers can entry any level on the printing platform. This permits for higher flexibility in how objects are oriented throughout the printing course of. Preliminary assessments have proven promising outcomes, significantly when working with supplies like IN718 which have traditionally posed difficulties. As per MTC, this technique represents a leap ahead in AM effectivity and is anticipated to additional enhance with the mixing of an extra laser supply.

One other side of the AMCM system is its exact management over gasoline stream and oxygen ranges inside the printing chamber. These components are essential for guaranteeing high-quality ends in powder mattress fusion (PBF) processes. The system maintains a steady ambiance with oxygen ranges of <50 ppm, enabling MTC to discover the usage of supplies like pure copper, that are difficult in 3D printing.

Furthermore, the AMCM M 290-2 FLX affords the power to warmth the printing platform as much as 500°C. This opens doorways for evaluating functions in demanding industries like aerospace and protection. The capability of AMCM’s system for pre- and post-heat therapy caters to processing high-performance supplies reminiscent of aluminum alloys and refractory metals, additional highlighting its versatility.

Other than exploring new supplies, MTC goals to leverage the AMCM system to boost manufacturing pace and the dimensions of printable parts. The system boasts twin 1200-watt laser sources, making it a high-powered answer, says the corporate. Moreover, the adjustable spot dimension of the nLIGHT lasers permits for swift changes, facilitating exact printing of intricate constructions and contours whereas accelerating total manufacturing. This flexibility probably reduces the necessity for in depth post-processing steps, contributing to cost-effectiveness.

Compared to a standard 400 W laser process with 85 µm spot size, the nLIGHT exposure process is 2 times faster. Image via MTC.
In comparison with an ordinary 400 W laser course of with 85 µm spot dimension, the nLIGHT publicity course of is 2 instances sooner. Picture by way of MTC.

A take a look at beam shaping in steel AM

Beam shaping entails manipulating the laser beam profile utilizing varied optical parts earlier than it interacts with the powder mattress. This permits for the creation of various beam shapes past the usual Gaussian profile. 

Beam shaping is a promising space of analysis, as evidenced by Fraunhofer IAPT‘s Philipp Kohlwes, Head Of L-PBF, who highlights its potential to enhance stability and productiveness in steel AM. To realize this, researchers on the institute, led by Kohlwes, explored applied sciences like adapting laser profiles to optimize vitality enter within the soften pool throughout the LPBF course of. Conventional Gaussian laser profiles have been problematic as a result of they precipitated uneven vitality distribution, resulting in vaporization points and compromising course of stability. 

Beam shaping provided a possible answer by adjusting the laser profile to make sure a constant temperature distribution inside the soften pool. This, in flip, led to the advantages like improved microstructure management, potential price discount, and elevated productiveness with sooner printing speeds.

Again in 2021, Lawrence Livermore Nationwide Laboratory (LLNL) investigated how laser beam shaping might be used to boost steel AM. By shaping the laser right into a bullseye sample by way of conical lenses and extra optics, Bessel beams redistribute vitality, lowering pore formation and “keyholing” defects. These beams supply superior management over warmth deposition, leading to lowered turbulence and spatter within the soften pool. Elements printed with Bessel beams exhibited denser, stronger, and extra sturdy properties in comparison with these printed with Gaussian beams.

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Featured picture reveals the MTC crew visiting AMCM Starnberg to obtain complete sensible coaching on the machine earlier than it’s delivered. From left to proper: Chris Dalton, Alex Hardaker, Marius Christ, Christoph Seyfert, Fiona Schulz, Marius Hoyer. Photograph by way of MTC.



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