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Investigations on Temperatures of the Flat Insert Mold Cavity Using VCRHCS with CFD Simulation
Rong-Tsu Wang1, Jung-Chang Wang2, Sih-Li Chen3
1Department of Tourism and Leisure Management, Yu Da University of Science and Technology, Miaoli County 36143, Taiwan.
Polymers
|August 12, 2022
Summary
This study enhanced plastic injection molding using a Vapor Chamber for Rapid Heating and Cooling System (VCRHCS). This method significantly reduced welding line defects and improved material strength.
Area of Science:
- Materials Science
- Manufacturing Engineering
- Polymer Science
Background:
- Plastic injection molding often suffers from defects like welding lines in crystalline plastics.
- Achieving uniform and rapid temperature control in mold cavities is crucial for product quality.
Purpose of the Study:
- To investigate the effectiveness of a Vapor Chamber for Rapid Heating and Cooling System (VCRHCS) in plastic injection molding.
- To assess the impact of VCRHCS on reducing welding line defects and enhancing mechanical properties.
Main Methods:
- Employed transient Computational Fluid Dynamics (CFD) simulations.
- Integrated experimental methods for design and analysis.
- Embedded vapor chambers (VC) between heating units and mold cavities.
Main Results:
- Tensile strength of plastic specimens increased by over 8%.
- Welding line depths (V-gap) were reduced by 24 times, from 12 μm to 0.5 μm.
- Demonstrated rapid and uniform temperature distribution within the mold cavity.
Conclusions:
- VCRHCS technology effectively minimizes welding line defects in crystalline plastic goods.
- The VCRHCS process enhances tensile strength and reduces material weakness.
- This molding procedure can shorten development timelines for new plastic products.
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