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Modelling and analysis of energy consumption in glass molding process for smartphone covers using different heating strategies

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Abstract

In recent years, the glass molding process (GMP), as an alternative technology of traditional glass processes, has been widely used in curved glass production industry. However, the high energy consumption issue that resulted in the strong thermo-mechanical coupling and high temperature (more than 700 ∘C) in GMP has now emerged as one of the factors impeding the further advancement of it. This study models and examines the energy usage in smartphone covers using various heating methodologies. Numerical model of heat flow between heating plates, heat-conducting plates and molds is established to investigate the energy flow and energy consumption in GMP. The effects of heating rate and heat flux density on energy consumption are studied, respectively. In addition, different strategies are adopted to estimate the effectiveness, and the desired energy consumption of GMP can be reduced from 614 to 594.4 kJ (reduce 3.19%) by the proposed model under the desired optimized process parameters. The molding time is reduced from 148.8s to 139.2 s, with a reduction rate of 6.45%. The verification experiment confirms that the predicted error is less than 15%. Finally, this paper analyzes the impact of energy consumption and carbon emissions on energy sustainability and environment in GMP.

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Abbreviations

GMP:

Glass molding process

IDC:

International Data Corporation

SPDT:

Single point diamond turning technology

IBP:

Ion beam polishing

ELID:

Electrolytic in-process dressing

MRF:

Magneto rheological finishing technology

IEA:

International Energy Agency

EGM:

Energy Gap Method

SEC:

Specific energy consumption

UVAG:

Ultrasonic vibration-assisted grinding

UNFCCC:

United Nations Framework Convention on Climate Change

NDRC:

National Development and Reform Commission

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Funding

This research is supported by Science and Technology Innovation Team Project of Henan Province (20IRTSTHN015) and Science and Technology Research Project of Henan Province (222102220011). In addition, this research is supported by the Local Innovative and Research Teams Project of Guangdong Pearl River Talents Program (2017BT01G167).

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Authors and Affiliations

  1. Henan Key Lab of Intelligent Manufacturing of Mechanical Equipment, Department of Electromechanical Science and Engineering, Zhengzhou University of Light Industry, Zhengzhou, 450002, China

    Wuyi Ming, Zhiwen Jiang, Zhijun Chen, Wenbin He & Xiaoke Li

  2. School of Mechanical Engineering, University of Science and Technology Beijing, Beijing, 100083, China

    Zhijun Chen

  3. Guangdong HUST Industrial Technology Research Institute, Guangdong Provincial Key Laboratory of Digital Manufacturing Equipment, Dongguan, 523808, China

    Xiaoke Li

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  1. Wuyi Ming
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  2. Zhiwen Jiang
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Contributions

Wuyi Ming designed the experiments and wrote a review and editing; Zhiwen Jiang investigated, modeled and completed the writing manuscript; Zhijun Chen provided ideas and carried out experimental verification; Xiaoke Li conducted data analysis; Wenbin He supervised and provided fund support.

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Correspondence to Zhijun Chen.

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Ming, W., Jiang, Z., Chen, Z. et al. Modelling and analysis of energy consumption in glass molding process for smartphone covers using different heating strategies. Int J Adv Manuf Technol 124, 1491–1512 (2023). https://doi.org/10.1007/s00170-022-10442-6

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