[ Papers ]

Journal of the Korean Society of Manufacturing Technology Engineers - Vol. 31, No. 5, pp.306-311

ISSN: 2508-5107 (Online)

Print publication date 15 Oct 2022

Received 21 Jul 2022 Revised 10 Aug 2022 Accepted 16 Aug 2022

DOI: https://doi.org/10.7735/ksmte.2022.31.5.306

Joule-Thomson 효과를 이용한 금형 급속 냉각방법 연구

김미진^a ; 최재혁^b^{, *}

Study on the Rapid Cooling Method of an Injection Mold using the Joule–Thomson Effect

Mi Jin Kim^a ; Jae Hyuk Choi^b^{, *}

aDepartment of Future Technology Convergence Engineering, Graduate School, Gwangju University
bDepartment of Mechanical Convergence Engineering, Gwangju University

Correspondence to: ^*Tel.: +82-62-670-2947 E-mail address: jhchoi@gwangju.ac.kr (Jae Hyuk Choi).

Abstract

In this study, a rapid cooling system for injection mold using liquefied gas was fabricated, and its performance was verified. CO₂ was selected as the refrigerant of the cooling system considering the convenience and maintenance fee. The system operated by spraying CO₂ directly into the cooling area using a capillary tube made of stainless steel. The performance of the fabricated system was verified using a square plate specimen. Subsequently, this result was reflected to a specimen injection mold, and a temperature sensor was installed and compared in two areas where fast and general cooling were performed. The effect of the rapid cooling system was quantitatively analyzed. The temperature results confirmed that rapid cooling was faster than general cooling.

Keywords:

Injection mold, Rapid cooling system, Joule-Thomson effect, CAE, Temperature measuring

Acknowledgments

이 성과는 정부(과학기술정보통신부)의 재원으로 한국연구재단의 지원을 받아 수행된 연구임(No. 2019R1G1A1008125).

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Mi Jin Kim

Ph.D candidate in the Department of Future Technology Convergence Engineering, Graduate School, Gwangju University. Her research interest is injection molding process.

E-mail: kmj5997@gmail.com

Jae Hyuk Choi

Professor in the Department of Mechanical Convergence Engineering, Gwangju University. His research interests are optimization of injection molding process and thermoset plastic molding.

E-mail: jhchoi@gwangju.ac.kr