EP-M450H

The EP-M450H is an SLM 3D printer from Eplus3D with a 455 x 455 x 1100 mm build volume.

Specifications

Eplus3D EP-M450H: Technical Overview

Laser

Configurable: 1, 2 or 4 fiber lasers at 500, 700 or 1000 W; 1070 nm wavelength. Dual-laser configuration increases throughput by ~70%.

Scanner

Galvanometric scanners with stitching algorithm for multi-laser coverage; scan speed up to 8 m/s.

Build Volume

455 × 455 × 1100 mm: over 200 litres; the only Z-travel > 1 m in Eplus3D's standard product line.

Chamber / Shielding Gas

Closed chamber with argon or nitrogen; certified for reactive alloys; purge time ~30–45 min for full inertisation.

Layer Thickness

20–100 µm; typically 40–60 µm for structural parts.

Build Rate

Up to 55 cm³/h in standard configuration.

Calibration

Calibration: EP-M450H

Multi-Laser Stitching Calibration

>20×20 test grid with CMM; stitching error < 25 µm.

Z-axis Verticality

Laser tracker at 3 positions (0/550/1100 mm); deviation < 50 µm/1100 mm.

Powder Layer Uniformity

Test layers at 3 Z positions; thickness ±5 µm.

Atmosphere

O₂ < 100 ppm for Ti/Al, achieved within ≤45 min purge.

Recoater Inspection

Blade + linear bearings every 200 production hours.

Common defects

Common Defects: EP-M450H

Banding / Vertical Porosity

Cause: Accumulated variations over long Z-series. Fix: In-situ thermography + narrow PSD powder.

Stitching Line Artefacts

Cause: Laser stitching calibration error. Fix: CMM calibration; avoid stitching zones on critical surfaces.

Residual Stress Distortion

Cause: Long Z-travel accumulates CTE stresses. Fix: Island scan + build plate heating + HIP post-processing.

Powder Spreading Failure.

What it is used for

Applications: EP-M450H

Aerospace Monolithic Structures

Blades, profiles, and load-bearing structures without welds: single build in 1100 mm Z.

Defence Ti/Inconel Parts

Reactive alloys at < 100 ppm O₂; configurable 1–4 lasers for varying throughput.

High-Volume Nested Production

>200-litre volume for hundreds of small parts in a single build.

Large-Scale LPBF Research.