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Soft Tooling-Friendly Inductive Mold Heating-A Novel Concept.

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Summary
This summary is machine-generated.

Additive manufacturing creates cost-effective soft tooling for injection molding. A novel induction heating method enhances tool lifespan by locally heating the mold cavity, overcoming thermal degradation issues.

Keywords:
inductive heatingmolded interconnect devicesoft toolingvariothermal injection molding

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Area of Science:

  • Materials Science and Engineering
  • Manufacturing Technology
  • Polymer Processing

Background:

  • Soft tooling, produced via additive manufacturing, offers economical injection molded prototypes.
  • Variothermal processes, essential for small features, can degrade soft tooling materials, limiting lifespan.
  • Existing methods lack localized heating capabilities to mitigate thermal damage.

Purpose of the Study:

  • To introduce a novel concept for locally heating injection mold cavities using induction.
  • To develop and validate a fabrication process for induction-heated soft tooling.
  • To enhance the longevity and efficiency of soft tooling in variothermal processes.

Main Methods:

  • Additive manufacturing of the tool structure.
  • Physical Vapor Deposition (PVD) coating for adhesion and seed layers.
  • Electroplating of a ferromagnetic metal layer.
  • Laser ablation for patterning the metal layer.
  • Adhesion, environmental, and induction testing on 2D specimens.

Main Results:

  • A multi-step fabrication process for induction-compatible soft tooling was established.
  • Testing confirmed the feasibility of localized induction heating within the mold cavity.
  • The developed process shows potential for improving energy transfer and tool durability.

Conclusions:

  • The proposed induction heating concept offers a viable solution to thermal degradation in soft tooling.
  • This approach can significantly extend the lifespan of additive manufactured molds.
  • Further investigation in actual tooling cavities is warranted based on these proof-of-concept findings.