M120 SLM Metal 3D Printer

Overview of SLM Technology

SLM stands for Selective Laser Melting, a powder‑bed metal additive‑manufacturing process. A high‑energy fiber laser beam melts metal powder completely layer‑by‑layer according to scanning paths generated by slicing software to produce high‑density functional metal parts. The forming process is performed inside a sealed inert‑gas‑protected chamber to prevent metal‑powder oxidation. It enables the fabrication of complex geometries such as lattices, conformal cooling channels and intricate internal cavities which are difficult to achieve via conventional machining. It is widely applied in research institutes, dental medical applications, mold development and small‑batch precision‑part trial production.

M120 Metal 3D Printer Configuration Table

M120 Metal 3D Printer Performance Specifications

Operation & Maintenance Instructions

Operating Specifications

1. Environment & Power Supply: Equip the workshop with air‑conditioning to maintain required temperature and humidity. Install Class‑D fire extinguishers and reliable earthing (ground resistance ≤5 Ω). Avoid sharing power supply with high‑frequency interference equipment.
2. Shielding Gas: Prepare ≥40 L high‑purity argon (purity ≥99.9%) for chamber purging and gas circulation.
3. Powder‑handling Safety: Wear respirators, protective suits and gloves when handling metal powder. Use explosion‑proof vacuum cleaners for reactive powders such as titanium alloy. Dispose of waste powder as hazardous chemical waste per regulations.
4. Laser Safety: This is a Class‑4 laser device. Never open the forming‑chamber door during operation. Do not remove safety interlocks.
5. Printing Workflow: Inspect substrate flatness and coater condition before printing. Start laser only after oxygen content falls within allowable range. Press emergency‑stop button to halt the whole machine in case of anomalies.

Routine Maintenance

1. Optical System: Never touch F‑θ lens, beam expander or other optical elements with bare hands. For lens contamination, contact qualified technicians for cleaning and calibration. Non‑professionals must not disassemble laser source or galvanometer.
2. Mechanical Forming Unit: Clean forming chamber and cylinder, remove powder residues on coater after each build. Replace silicone‑rubber coater blades when worn. Clean and lubricate Z‑axis lead‑screws and guide rails periodically.
3. Gas Circuit System: Calibrate oxygen sensor regularly; inspect argon pipelines for leakage; maintain gas‑purification units and replace filter consumables as scheduled.
4. Software & Backup: Back‑up process parameters periodically. All software‑version upgrades shall be performed by the manufacturer. Keep operation logs and alarm records for troubleshooting.
5. Spare Parts: Stock consumables such as substrates, silicone‑rubber coater blades and seals. The machine and laser carry a 1‑year warranty. Contact manufacturer engineers for malfunctions; dis‑assembly by end‑users is not recommended.