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  1. Home
  3. Thermal Bending Simulation And Experimental Study Of 3d Ultra-thin Glass Components For Smartwatches.
  1. Home
  3. Thermal Bending Simulation And Experimental Study Of 3d Ultra-thin Glass Components For Smartwatches.

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Thermal Bending Simulation and Experimental Study of 3D Ultra-Thin Glass Components for Smartwatches.

Shunchang Hu1, Peiyan Sun1,2, Zhen Zhang2,3

  • 1Henan Key Laboratory of Intelligent Manufacturing of Mechanical Equipment, Zhengzhou University of Light Industry, Zhengzhou 450002, China.

Micromachines
|October 26, 2024

View abstract on PubMed

Summary
This summary is machine-generated.

Optimizing heating strategies for ultra-thin glass molding significantly reduces energy consumption and heating duration. This study found specific heating rates and process parameters minimize residual stress and shape deviation in G-11 glass.

Keywords:
3D ultra-thin glass componentsheat conductionheating strategiessimulation modelthermal bending forming

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Area of Science:

  • Materials Science
  • Manufacturing Engineering
  • Thermal Engineering

Background:

  • Heating systems are crucial for glass molding, but energy consumption is a major concern in large-scale production.
  • Ultra-thin glass molding requires precise temperature control for optimal material properties and defect prevention.

Purpose of the Study:

  • To develop and validate a finite element model for thermal conduction and bending in 3D ultra-thin glass molding.
  • To investigate the impact of heating strategies and process parameters on energy consumption, thermal stress, and shape deviation.
  • To optimize the heating process for improved efficiency and reduced environmental impact.

Main Methods:

  • Development of a finite element model for thermal conduction and thermal bending of G-11 glass in a 3D ultra-thin glass molding system.
  • Simulation of heat transfer between mold and glass using finite element software to predict temperature distribution and thermal stress.
  • Numerical analysis of four distinct heating strategies and single-factor analysis of forming process parameters.

    • Main Results:

    • Heating rate significantly impacts energy consumption; optimized strategy 4 reduced thermal output by 4.396% and heating duration by 7.875%.
    • Optimal process parameters identified: temperature 615-625 °C, molding pressure 25-35 MPa, heating rate 1.5-2.5 °C/s, cooling rate 0.5-1 °C/s, pulse pressure 45-55 Hz.
    • Experimental validation confirmed minimal influence on residual stress and shape deviation within the identified parameter ranges, with relative error within 20%.

    Conclusions:

    • Optimized heating strategies and process parameters are essential for efficient and high-quality ultra-thin glass molding.
    • The developed finite element model provides a reliable tool for predicting and optimizing glass molding processes.
    • Findings offer crucial direction for industrial process development, enhancing energy efficiency and product quality.