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The use of cryogenic CO2 as a cutting fluid is a promising sustainable manufacturing technology capable of substituting oil-based emulsions during hard turning, showing a significant potential for both productivity improvement and environmental impact reduction. While previous works have focused on the assessment of the technical impact of the cryogenic CO2 on the process and quality performance, the present paper faces the evaluation of both the environmental and economic impact of this manufacturing technique. By the application of Life Cycle Assessment (LCA) methodology and Return-on-Investment (ROI) calculations for different manufacturing scenarios, the environmental and economic performance of the cryogenic CO2 cooling technique is evaluated in comparison to conventional cooling. Results indicate that the application of the cryogenic cooling can be successful depending on the manufacturing scenario. The performed analysis shows the possibility to identify the cases where the use of cryogenic CO2 would outperform conventional cooling strategies, proving a valuable methodology for minimizing the environmental impact and ensuring the cost effectiveness during the design phase of industrial turn-key projects for hard-turning operations.

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Life Cycle and Cost Assessment of CO2 Assisted Hard Turning of AISI 52100 in Comparison to Conventional Cooling Techniques

  • 会议论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年

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  • Iñigo Llanos,
  • Iker Urresti,
  • David Bilbatua,
  • Oier Zelaieta

摘要

The use of cryogenic CO2 as a cutting fluid is a promising sustainable manufacturing technology capable of substituting oil-based emulsions during hard turning, showing a significant potential for both productivity improvement and environmental impact reduction. While previous works have focused on the assessment of the technical impact of the cryogenic CO2 on the process and quality performance, the present paper faces the evaluation of both the environmental and economic impact of this manufacturing technique. By the application of Life Cycle Assessment (LCA) methodology and Return-on-Investment (ROI) calculations for different manufacturing scenarios, the environmental and economic performance of the cryogenic CO2 cooling technique is evaluated in comparison to conventional cooling. Results indicate that the application of the cryogenic cooling can be successful depending on the manufacturing scenario. The performed analysis shows the possibility to identify the cases where the use of cryogenic CO2 would outperform conventional cooling strategies, proving a valuable methodology for minimizing the environmental impact and ensuring the cost effectiveness during the design phase of industrial turn-key projects for hard-turning operations.