laser texturing for mould core functionalization · 2020. 1. 24. · laser texturing for mould core...

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


Introduction

Add function to already existing

surface

Laser machining texture on mould

surface

Laser texturing



Laser texturing

From bitmap texture To actual engraving


Laser texturingDesign Production


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


Power of Digital Design

Gradient of texture : leather retro-engineering + dimples + pyramids

Functionalization



Functionalization

Friction control

Hydrophobicity

Biological interface

Aerodynamics

Lightning

Reference Femto laser


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:


Functionalization: plastic injection


Functionalization: plastic injection


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


Conclusion: choice

Matter of choices

Engraving strategy TextureLaser parameter


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


Applied to core machining


Polymer screening

Showed 15% cycle time reduction during

real-case testing

Thanks for your attention

laser texturing for mould core functionalization · 2020. 1. 24. · laser texturing for mould core...

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