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DMLS - Direct Metal Laser Melting

As one of the first DMLM service providers in the country, GPI produces metal parts for applications ranging from prototypes to production.

eos m280 and eos m290GPI Prototype is a service provider of Direct Metal Laser Melting (DMLM), the latest technology for 3d printing and additive manufacturing of metal parts. As one of the first DMLM service providers in the country, GPI produces metal parts for applications ranging from prototypes to production. DMLM technology is ideal for a variety of applications including the creation of conformal cooling channels for injection molding tooling. DMLM is also known by the acronym DMLS, although the process results in full melting of the metal powder, so we have begun to use the more appropriate DMLM acronym.

Utilizing the DMLM process, metal parts of the most complex geometries are built layer-by-layer (down to 20 microns) directly from 3D CAD data. Parts built using DMLM have excellent mechanical properties equivalent to wrought materials, high detail resolution, and exceptional surface quality. The metal powder is melted entirely to create a fully dense, fine, homogenous structure. Unique geometric freedom of design enables DMLM to form cavities and undercuts, which with conventional machining methods, can only be produced with great difficulty, if at all.

Additionally, when a part needs to be tested and re-designed over and over, the lead time for receiving a traditionally tooled part can create a large bottleneck in the final production process. DMLM produces parts that are extremely high quality and can be built in a matter of hours or days rather than weeks. The ability to generate functional metal prototypes in short order radically impacts design processes, accelerating design cycles and time to market.

Depending on size and geometries, in some cases the turnaround time for a part can be as little as a few hours. Furthermore, these parts can undergo functional testing in the environment for which they were designed. This technology delivers unlimited potential for engineers to create previously impossible solutions, embracing a new era of design-driven manufacturing.

GPI Prototype currently has six DMLM machines at our Lake Bluff, IL facility. There are six machines from EOS including two EOSINT M 270 machines, two EOSINT M 280 machines, and two EOSINT M 290 machines.


 

DMLM Materials & Specifications

MaterialAlloy DesignationLayersHardnessAdvantagesApplications
Stainless Steel (PH1) 15-5 PH, DIN 1.4540 and UNS S15500 20 or 40 Micron Layers 30-35 HRC Built, Post Hardened to 40 HRC High Hardness & Strength Prototype / Production Parts
Stainless Steel (GP1) 17-4, European 1.4542, German X5CrNiCuNb16-4 20 or 40 Micron Layers 230 ± 20 HV1 Built, Ground & Polished to 250-400 HV1 High Toughness & Ductility Engineering Applications
Cobalt Chrome (MP1) ISO 5832-4 and ASTM F75 20, 40 or 50 Micron Layers 35-45 HRC Built High Temperature Resistance Turbines & Engine Parts
Maraging Steel (MS1) 18% Ni Maraging 300, European 1.2709, German X3NiCoMoTi 18-9-5 20 or 40 Micron Layers 33-37 HRC Built, Post Hardened to 50-56 HRC Easily Machinable & Excellent Polishability Injection Molding Tooling, Conformal Cooling
Aluminium AlSi10Mg Typical Casting Alloy 30 Micron Layers Approx 119 ± 5 HBW Low Weight, Good Thermal Properties Automotive, Racing
NickelAlloy IN718 UNS N07718, AMS 5662, AMS 5664, W.Nr 2.4668, DIN NiCr19Fe19NbMo3 40 Micron Layers 30 HRC Built, Post Hardened 47 HRC Heat & Corrosion Resistant Turbines, Rockets, Aerospace
Stainless Steel (316L) ASTM F138 20 Micron Layers 85 HRB Corrosion & Pitting Resitant Surgical Tools, Food & Chemical Plants
Titanium Ti-64 ASTM F2924 30 or 60 Micron Layers 320 ± 15 HV5 Light Weight, High Strength, Corrosion resistance Aerospace, Motorsport Racing
Titanium Ti-64 ELI ASTM F136 Properties 30 or 60 Micron Layers 320 ± 15 HV5 Corrosion Resistance, Biocompatibility Medical, Biomedical, Implants

 

dmlm finishing options

 

If you are looking for fast metal parts with excellent mechanical properties, high resolution and exceptional surface quality, please give us the opportunity to Quote your next project.

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Address
940 North Shore Drive
Lake Bluff, IL 60044
Phone Number

847-615-8900

 

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