Mold Texturing - Pennsylvania State University

Mold Texturing - Pennsylvania State University

Mold Texturing Trevor Thorwart Andrew Meier Josh Hoover Introduction Mold Texturing Flexibility

Pleasing Look Aesthetic feel Types of Mold Texturing Mechanical Computer Numerical Control (CNC) Abrasive Blasting

Electrical Electrical Discharge Machining (EDM) Chemical Engraving CNC Engraved Areas of use Logos and Patterns

CNC Engraved Basic Milling Operation Work-piece clamped down Tool path computer generated Drill follows and cuts

path Abrasive Blasting Method Abrasive particles etch tool Commonly sand High Velocity Matte, decorative, and textured finish

Abrasive Blasting Advantages Cheap Quick Disadvantages Good for matte surface textures

Inconsistent surface finish Abrasive Blasting Electrical Discharge Machining (EDM) Created using electrodes Shaped tool or wire graphite

Plasma Etched in CNC pattern EDM Procedure Placed in dielectric fluid Discharge created Plasma erodes surface Follows CNC path

Dielectric fluid washes debris away EDM Advantages Complex and simple surfaces Dimensional Accuracy (+/- .0005 in)

High Range of Materials Soft and Hard Mold Steels Can be fully automated EDM Disadvantages Low production volume

Slow cutting EDM scale Must be post-polished Blind holes Difficult Debris Removal

EDM Chemical Engraving Patterning Process using a acid bath Chemical Engraving Procedure

Stencil Mold Masked Acid Bath Tooling Dissolves

Chemically Textured Surface Details Masked Chemical Engraving Advantages Dimensional Cost

Tooling Disadvantages Surface Types Secondary cleaning operation Masking

Mold Texturing Areas of Use Injection Molding

Blow Molding Compression Molding Thermoforming Rotational Molding Other Issues Guidelines Mold Preparation

Costs Surface Tooling Mold material Mold Repair

Conclusion

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