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Laser texturing for mould core functionalization
GF Machining Solutions
Alexis Demierre - 21/01/2020
This work is partly funded by the Innovation Fund Denmark (IFD) under File No. 6151-00004B.
Laser texturing for mould core functionalization | 21/01/2020 | Alexis Demierre2
GFMS-Laser PresentationGF
GF Piping Systems GF Casting Solutions GF Machining Solutions
Operations Core Technologies + Advanced Manufacturing
(Milling, EDM,…)
Laser TSE (Texturing, Structuring and Engraving)
Laser texturing for mould core functionalization
Laser texturing for mould core functionalization | 21/01/2020 | Alexis Demierre3
Introduction
Add function to already existing
surface
Laser machining texture on mould
surface
Laser texturing
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Laser texturing for mould core functionalization | 21/01/2020 | Alexis Demierre5
Laser texturing
From bitmap texture To actual engraving
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Laser texturingDesign Production
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Laser texturingCAD file Engraving area definition Texture wrapping
Toolpath definition Anti-collision simulation Engraving
2 MIN
7 H 32 MIN
1 H 50 MIN
9 MIN
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Power of Digital Design
Gradient of texture : leather retro-engineering + dimples + pyramids
Functionalization
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Functionalization
Friction control
Hydrophobicity
Biological interface
Aerodynamics
Lightning
Reference Femto laser
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Functionalization
Friction control
Hydrophobicity
Biological interface
Aerodynamics
Lightning
"Surface engineering for optimum productivity
moulding processes in high added-value plastic-steel
systems" (Super-Moulds)
Basic laser application knowledge:
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Functionalization: plastic injection
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Functionalization: plastic injection
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Functionalization: plastic injectionBefore
finishing
After
finishing
▪ Plastic ejection can be improved by choosing surface finish accordingly
▪ Anti-scratch properties are also depending on engraving strategy choices
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Conclusion: choice
Matter of choices
Engraving strategy TextureLaser parameter
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Control and Possibilities
Control over machining process:
• Laser power
• Speed of laser along tool path
• Frequency of shots
• Pulse width → matter reaction to laser
• Burst (on femto)
• Energy density
• Tool path definition
• Bitmap texture
• Blasting finishing (laser version of sandblasting)
Solutions
SUPERMOULD project
-10
40
90
140
190
240
0 0,5 1 1,5 2 2,5 3
Fo
rce
(N
)
time (s)
Reference insert
Laser textured insert
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Applied to core machining
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Polymer screening
Showed 15% cycle time reduction during
real-case testing
Thanks for your attention