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<p>This study uses a comprehensive life cycle assessment (LCA) approach to analyze the performance differences between additive-aided investment casting (AM-IC) and conventional investment casting, focusing on dimensional accuracy, mechanical performance, production efficiency, and environmental impact, using a comprehensive life cycle assessment (LCA) approach. The novelty of this research lies in the comparative analysis of LCA performance on 316L stainless steel—a material relevant to the investment casting process and widely used in automotive components. Key findings reveal that AM-IC enhances dimensional accuracy, increases mechanical hardness, and significantly lowers environmental burdens and production inefficiencies. Quantitative environmental and process efficiency metrics underscore the superior performance of AM-IC. The results indicate that AM-IC significantly improves dimensional accuracy performance, reducing the coefficient of variation (CV) from 0.16 to 0.06%, and increasing hardness by approximately 7.59% compared to the conventional process. Additionally, AM-IC reduces production cycle time, material waste, energy consumption, and carbon footprint by 40.5%, 42.0%, 93.6%, and 93.6%, respectively. These findings highlight the potential of AM-IC in enhancing mechanical and dimensional performance and promoting environmental sustainability. Overall, for stainless steel manifolds, AM-IC production is more environmentally and economically sustainable than conventional casting.</p>

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Performance and Environmental Analysis on Additive-Manufacturing-Assisted Investment Casting of SS 316L Manifold Part Using Life Cycle Assessment

  • 期刊论文

  • 发表日期：

    2025年10月16日

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  • Intan Mardiono,
  • Imang Eko Saputro,
  • Zhi-Xian Dong,
  • Cheng-Fu Huang,
  • Yu-Chen Liu,
  • Sheng-Chan Lee,
  • Chih-Chi Wang,
  • Chien-Wei Chan,
  • Yiin-Kuen Fuh

摘要

This study uses a comprehensive life cycle assessment (LCA) approach to analyze the performance differences between additive-aided investment casting (AM-IC) and conventional investment casting, focusing on dimensional accuracy, mechanical performance, production efficiency, and environmental impact, using a comprehensive life cycle assessment (LCA) approach. The novelty of this research lies in the comparative analysis of LCA performance on 316L stainless steel—a material relevant to the investment casting process and widely used in automotive components. Key findings reveal that AM-IC enhances dimensional accuracy, increases mechanical hardness, and significantly lowers environmental burdens and production inefficiencies. Quantitative environmental and process efficiency metrics underscore the superior performance of AM-IC. The results indicate that AM-IC significantly improves dimensional accuracy performance, reducing the coefficient of variation (CV) from 0.16 to 0.06%, and increasing hardness by approximately 7.59% compared to the conventional process. Additionally, AM-IC reduces production cycle time, material waste, energy consumption, and carbon footprint by 40.5%, 42.0%, 93.6%, and 93.6%, respectively. These findings highlight the potential of AM-IC in enhancing mechanical and dimensional performance and promoting environmental sustainability. Overall, for stainless steel manifolds, AM-IC production is more environmentally and economically sustainable than conventional casting.