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Mold Texturing

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.

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Mold Texturing

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  1. Mold Texturing Trevor Thorwart Andrew Meier Josh Hoover

  2. Introduction • Mold Texturing • Flexibility • Pleasing Look • Aesthetic feel

  3. Types of Mold Texturing • Mechanical • Computer Numerical Control (CNC) • Abrasive Blasting • Electrical • Electrical Discharge Machining (EDM) • Chemical Engraving

  4. CNC Engraved • Areas of use • Logos and Patterns

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

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

  7. Abrasive Blasting • Advantages • Cheap • Quick • Disadvantages • Good for matte surface textures • Inconsistent surface finish

  8. Abrasive Blasting

  9. Electrical Discharge Machining (EDM) • Created using electrodes • Shaped tool or wire graphite • Plasma Etched in CNC pattern

  10. EDM Procedure • Placed in dielectric fluid • Discharge created • Plasma erodes surface • Follows CNC path • Dielectric fluid washes debris away

  11. EDM • Advantages • Complex and simple surfaces • Dimensional Accuracy (+/- .0005 in) • High Range of Materials • Soft and Hard Mold Steels • Can be fully automated

  12. EDM • Disadvantages • Low production volume • Slow cutting • EDM scale • Must be post-polished • Blind holes • Difficult Debris Removal

  13. EDM

  14. Chemical Engraving • Patterning Process using a acid bath

  15. Chemical Engraving Procedure • Stencil • Mold Masked • Acid Bath • Tooling Dissolves Chemically Textured Surface Details Masked

  16. Advantages Dimensional Cost Tooling Disadvantages Surface Types Secondary cleaning operation Masking Chemical Engraving

  17. Mold Texturing Areas of Use • Injection Molding • Blow Molding • Compression Molding • Thermoforming • Rotational Molding

  18. Other Issues • Guidelines • Mold Preparation • Costs • Surface • Tooling • Mold material • Mold Repair

  19. Conclusion

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