Direct Metal Laser Sintering (DMLS)

Direct metal laser sintering (DMLS) is an industrial 3D printing process that builds fully functional metal prototypes in a range of metals like steel, aluminimu, titanium etc. It allows for the direct manufacturing of complex end-use parts and facilitates tooling for conventional manufacturing technologies, reducing costs and lead times.

Metal 3D Printing is a laser-based technology that uses powdered metals. Similar to Laser Sintering, a high-powered laser selectively binds together particles on the powder bed while the machine distributes even layers of metallic powder.

Rapid prototyping technique 3D Printing Laser Sintering

3D Printing Laser Sintering

The DMLS machine begins sintering each layer—first the support structures to the base plate, then the part itself—with a laser aimed onto a bed of metallic powder. After a cross-section layer of powder is micro-welded, the build platform shifts down and a recoater blade moves across the platform to deposit the next layer of powder into an inert build chamber. The process is repeated layer by layer until the build is complete.

Support structures are automatically generated and built simultaneously in the same material, and are later manually removed. An initial brushing is manually administered to parts to remove a majority of loose powder, followed by the appropriate heat-treat cycle while still fixtured in the support systems to relieve any stresses. Parts are removed from the platform and support structures are removed from the parts, then finished with any needed bead blasting and deburring. Final DMLS parts are near 100 percent dense.

This technology combines the design flexibility of 3D Printing with the mechanical properties of metal. From tooling inserts with cooling channels to lightweight structures for aerospace, any application that involves complex metal parts potentially benefits from Metal 3D Printing.

  • Fully functional prototypes

  • Production tools and tooling such as molds and inserts

  • Spare parts and end use parts

  • Heat exchangers and heatsinks

  • Light weight structures

EOS Maraging Steel MS1                                                                     View Data sheet

Tensile Strength(MPa) Hardness Thermal Conductivity(W/m-celsius)
XY:1100 Z:1100 33 – 37 HRC 15

EOS Stainless Steel 316L                                                                    View Data sheet

Tensile Strength(MPa) Hardness Thermal Conductivity(W/m-celsius)
XY:640Z:590 89 HRB NA

EOS Cobalt Chrome MP1                                                                    View Data sheet

Tensile Strength(MPa) Hardness Thermal Conductivity(W/m-celsius)
XY:1350Z:1200 35 – 45 HRC 13 – 33

EOS Aluminum AlSi10Mg                                                                    View Data sheet

Tensile Strength(MPa) Hardness Thermal Conductivity(W/m-celsius)
XY:460Z:460 119 HBW 105

EOS Titanium Ti64                                                                    View Data sheet

Tensile Strength(MPa) Hardness Thermal Conductivity(W/m-celsius)
XY:1290Z:1240 320 HV5 NA

EOS Nickel Alloy IN718                                                                    View Data sheet

Tensile Strength(MPa) Hardness Thermal Conductivity(W/m-celsius)
XY:1060Z:980 30 HRC NA

Minimum Wall thickness: 0.8 – 1 mm

Minimum details size: 2 mm (for text/ hole diameters etc)

Layer thickness: 0.05 – 1 mm

Max dimensions: 250 x 250 x 325 mm

Standard Accuracy: ± 0.2% (with lower limit on ± 0.2 mm).

Lead Time: Minimum 10-14 working days for despatch

Surface finish: Rough surface, which can undergo finishing stages as per requirement

Basic: Powder removal, Blasting, Smoothing

Add on: Tapping, Heat Treatment

Gallery

Case Studies

2017-07-17T07:05:53+00:00 July 4th, 2017|3D Technologies|2 Comments

About the Author:

Co-founder at think3D, from product management background. Interest in tech stuff ad belief in 3D printing potential

2 Comments

  1. dr ankur gupta March 22, 2018 at 10:28 am - Reply

    hi, i am interested in buying a dmls printer which can print both cobalt chrome and titanium
    the main applicat

    • think3D Customer Care
      think3D Customer Care March 22, 2018 at 11:38 am - Reply

      Hi
      Greetings from think3D! We do provide FDM, SLA & DLP technology based 3D printers. At this moment we will not be able to procure the machines for you. However, if you need any help in producing parts using industrial technologies like DMLS/ full color/ Polyjet/ SLS/SLA, feel free to approach us.
      Thank you.

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