The parameters of SLM 3D printing are critical settings that determine the quality and characteristics of the printed parts.
These parameters include:
● Laser Power: The energy source for melting the metal powder, which can range from a few hundred to several thousand watts.
● Scan Speed: The rate at which the laser moves across the powder bed, typically measured in millimeters per second (mm/s).
● Layer Thickness: The height of each powder layer can vary from 20 to 100 micrometers (µm).
● Hatch Spacing: The distance between adjacent laser scan lines affects part density.
● Spot Size: The diameter of the laser beam’s focal point on the powder bed.
● Exposure Time: The duration the laser is in contact with a specific point on the powder bed.
● Inert Gas Flow: The flow of inert gas, such as argon, to protect the melt pool from oxidation.
These parameters are finely tuned to balance the melting process, ensuring strong bonding between layers while minimizing defects and distortions. Adjusting these parameters can help optimize the SLM process for different materials and desired outcomes.
