|Laser||Power Demand||M²||Beam Ø||Scanner/Lens||Energy|
|redENERGY G4 70W RM-Z||70W||<1.3||8mm||10mm aperture/160mm F-theta||WF0 @70kHz|
This thickness of brass can be cut using a multi-pass method where the cut is created by ablating through the sheet thickness. With the single mode Laser the spot diameter is small (around 32µm in this instance) which enables a high material removal rate but creates a narrow kerf (cut width).
In order to cut 1mm thick sheet material, the beam is wobbled during the cutting process in order to widen the kerf. Initially a wider wobble diameter (typically 60µm) is used, changing to 40µm diameter during the middle of process and then to 20µm towards the end, always using a wobble frequency of 600Hz. This gives an overall cutting speed in the region of 60 to 80mm/min.
The workstation used a 75mm BEC which produced an 8.1mm (1/e2) diameter beam at the scanner entrance, allowing a 10mm aperture scanner to be used. The scanner was fitted with a 160mm focal length objective lens which gave a 100x100mm field size.
Alternatively, our redENERGY S-Type Laser can be used for cutting materials. Cutting speed is greatly dependent on output power.
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