A Numerical Simulation and Multi-objective Optimization for the Plastic Injection Molding of a Centrifugal Pump Casing

Plastic pumps are used to efficiently move liquids within aquaculture systems and seafood processing facilities. Commonly, the centrifugal pump casing is fabricated by plastic injection molding technology. In the plastic injection molding process, the control parameters are essential to the success of plastic molding product fabrication. This study aims to optimize process parameters for the quality of centrifugal pump casing during plastic injection molding using a combination of response surface methodology (RSM) and the NSGA-II method. Firstly, the L27 orthogonal array design of the experiment method is used, which has four input variables, including plastic temperature, mold temperature, cooling time, and injection time (filling time and packing time). The output responses of the injection molding process to be evaluated are the warpage and shrinkage deformation of the molded product. After obtaining data, the RSM model is applied to describe the relationship between the input and output variables. Finally, multi-objective optimization uses the NSGA-II method for the best product quality. The results show that the optimized parameters for injection molding of the centrifugal pump casing are a plastic temperature of 200°C, mold temperature of 65°C, cooling time of 25s, and injection time of 10s with warpage of 0.868 mm, and shrinkage of 10.104mm.

• Publication year

  2023

• Venue

  IOP Conference Series: Earth and Environment

• Publication date

  2023-12-01

• Fields of study

  Physics, Engineering

• Identifiers
  DOI 10.1088/1755-1315/1278/1/012026
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

• Recent progress in minimizing the warpage and shrinkage deformations by the optimization of process parameters in plastic injection molding: a review

  2022cited by this paper
• Study on Automotive Back Door Panel Injection Molding Process Simulation and Process Parameter Optimization

  2021influential reference
• Simulation-based optimization of plastic injection molding parameters for mini centrifugal pump body using response surface methodology

  2020cited by this paper
• Warpage analysis and optimization of thin-walled injection molding parts based on numerical simulation and orthogonal experiment

  2019cited by this paper
• Influence of molding conditions on the shrinkage and roundness of injection molded parts

  2010cited by this paper

• Multi-Objective Optimization of Injection Molding Process Parameters for Junction Boxes Based on BP Neural Network and NSGA-II Algorithm

  2025cites this paper
• Sustainable Optimization of the Injection Molding Process Using Particle Swarm Optimization (PSO)

  2025cites this paper
• Implementing Sensible Algorithmic Decisions in Manufacturing

  2025cites this paper
• A computational framework for optimising Extrusion Blow Moulding: Enhancing material efficiency and reducing waste for industry 4.0

  2025cites this paper