3D Systems DMP Factory 350

The 3D Systems DMP Factory 350 is a DMLS 3D printer from 3D Systems with a 275 x 275 x 420 mm build volume.

Specifications

3D Systems DMP Factory 350: Technical Specifications

Technology and Laser

The DMP Factory 350 uses Direct Metal Printing (DMP), a form of DMLS/L-PBF, with a single or dual 500 W fiber laser at 1 070 nm. The dual-laser configuration reduces build time by up to 50% for production runs.

Vacuum Chamber

The defining differentiator is a vacuum chamber achieving <25 ppm O₂: far lower than argon-flood competitors typically running at 50–200 ppm. This is critical for reactive alloys such as Ti6Al4V and Ti Grade 23.

Build Volume

275 × 275 × 420 mm; layer thickness 20–60 µm. Bidirectional recoating is standard.

Powder Management Module (PMM).

Calibration

DMP Factory 350 Calibration

• Vacuum and O₂ check: Before each job, the chamber is evacuated and purged with inert gas until <25 ppm O₂ is reached. If the threshold is exceeded, inspect door seals and degas fresh powder at 80 °C for 4 h.
• Laser focus calibration: Measure the spot diameter and power profile of the 500 W laser. Target: spot ≤ 80 µm (D86), power deviation ≤ ±2%. Perform with a cold chamber to avoid thermal drift.

3.

Common defects

Common Defects on DMP Factory 350

Porosity: Spherical pores visible in metallographic cross-sections or CT. Cause: insufficient energy density or trapped gas bubbles from moist/oxidized powder. Fix: increase linear energy density by 5–10%; replace or degas the powder batch; verify O₂ before the next job.

Hot cracking: Characteristic of nickel superalloys (Inconel 738, CM247LC); appears along grain boundaries under rapid cooling.

What it is used for

Applications and Limitations of DMP Factory 350

Best applications:

• Aerospace titanium parts: vacuum below 25 ppm O₂ is mandatory for Ti6Al4V Class I and medical Ti Grade 23, achieving densities ≥ 99.7%.
• Medical implants: the PMM module and material traceability comply with ISO 13485.