NXG XII 600E

The NXG XII 600E is an SLM 3D printer from Nikon SLM Solutions with a 600 x 600 x 1500 mm build volume.

Specifications

NXG XII 600E: Technical Specifications

Laser System (12 × 1 kW)

Identical to the base NXG XII 600: twelve 1000 W fibre lasers with simultaneous full-field coverage of 600 × 600 mm. Standard beam diameter 160 µm, expandable to 400 µm via zoom function for high-throughput infill.

Build Volume

600 × 600 × 1500 mm: exceeding the nearest competitor by 90% on Z-height at launch (2022). Total volume of 540 litres is unprecedented for powder-bed technology.

Layer Thickness

90 µm and above; optimised for high-throughput production of large parts, not fine surface detail.

Field Upgrade from NXG XII 600.

Calibration

Calibration Procedure

Z-Axis Verification at 1500 mm Stroke

Verify perpendicularity and positional accuracy across the full 1500 mm stroke (<50 µm error). Thermal expansion of the column during >24 h builds requires active temperature compensation.

12-Laser Optical Calibration

Identical to NXG XII 600. For builds >24 h, plan a mid-job verification checkpoint using in-process monitoring sensors.

Vertical O₂ Profile Monitoring.

Common defects

Typical Defects and Remedies

Thermal Distortion of Tall Monolithic Parts

Residual stress accumulation over 1500 mm is critical. Fix: mandatory HIP + stress relief; island scanning with layer rotation.

O₂ Stratification During Long Builds

O₂ concentration in the upper zones of the 1500 mm chamber can increase during long runs. Fix: multi-zone monitoring + supplementary gas injectors at mid-height.

Multi-Laser Stitching Boundaries

Identical to NXG XII 600.

What it is used for

Use Cases

Rocket Nozzles and Combustion Chambers

The machine's primary purpose: monolithic rocket nozzles up to 1500 mm with no welding. The only production LPBF system with this capability.

Aerospace Structural Frames

Long Al and Ti monolithic structures for aircraft spars, frames, and ribs: mass reduction without structural compromise thanks to eliminated weld joints.