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Research on Gas Injection Mold using CAE Analysis of Steering wheel Parts

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(1)Journal of the Korea Academia-Industrial cooperation Society Vol. 16, No. 11 pp. 7729-7735, 2015. http://dx.doi.org/10.5762/KAIS.2015.16.11.7729 ISSN 1975-4701 / eISSN 2288-4688. 자동차핸들 제품의 CAE해석을 활용한 가스 사출성형에 관한연구 강세호1, 우창기1*, 김옥래2 2. 1. ㈜건화, 인천대학교 기계공학부, 한국생산기술연구원 금형기술그룹. Research on Gas Injection Mold using CAE Analysis of Steering wheel Parts Sae-Ho Kang1, Chang-Ki Woo1*, Ok-Rae Kim2 1. Kunhwa Co., Ltd, Department of Mechanical Engineering Incheon National University, 2. Mold & Dies-technology R&D Group kitech. 요 약 플라스틱 사출성형제품은 금형을 제작하여 대량생산에 적합한 시스템으로서 두께가 두꺼운 자동차 핸들제품은 가스 사출성형을 수행하는 것이 바람직하다. 가스사출성형은 용융된 원재료를 금형내로 충전시킨 후 질소가스를 주입하는 기술이 다. 가스사출성형은 재료비절감, 품질향상 등 많은 장점을 가지고 있다. Moldflow소프트웨어를 활용하여 사출성형 공정을 해석하여 제품의 휨 변형을 최소하기 위한 게이트의 위치를 결정하였으며, 기존의 일반적인 PP재료로 가스사출 성형을 했을 경우 변형이 크게 발생되므로 미네랄이18% 함유된 PP 재료로 변경하여 사출제품의 휨 변형을 최소로 하는 것과 게이트의 위치를 변경하여 핑거링현상이 발생하는 트러블을 제거하는 것을 목적으로 하였다, 또한 가스 사출성형을 수행하였을 경우 원재료가 유입되고 난후 게이트를 기준으로 가스가 유입된 형상을 파악하기 위해 비교분석해 보았다. 본 연구를 통해 제품형 상에 따른 두께의 변화와 가스사출성형을 수행하더라도 플라스틱의 재료에 따라 제품의 휨이 발생 될 수 있다는 것과 게이트 의 위치가 제품의 트러블에 영향을 미친다는 것을 알 수 있었다.. Abstract As plastic injection mold parts is suitable system mass production making mold. So thick steering wheel parts is desirable to carry out gas injection molding. Gas injection mold is skill to inject nitrogen gas postfilling melting raw material into mold. Gas injection mold have many advantage like retrenchment of material cost, upgrading the guality. etc. It was decided gate position to minimize warpage of parts analysis injection mold process using mold flow software and incase doing gas injection mold using normal p.p material. it occur big warpage. so it is object minimizing warpage of injection parts to change p.p material containing mineral 18% and removing fingering phenomenon trouble as changing gate position. Also in case carrying out gas injection mold, I did comparison and analysis to grasp shape flow in gas setting a standard gate after flowing in raw material. Through this study, I found out changing of thickness by parts shape and it can occur warpage of parts by plastic material even though it carry out gas injection mold and it had a direct influence on trouble of parts by gate position.. Keywords : Flow, Gas injection, Molding, Mold design, Injection mold, Runner. 1. 서론. 과 플라스틱제품의 용도가 다양해지면서 기존 제품두께 가 표준규격보다 0.5∼1mm로 더 얇아지거나, 8∼. 플라스틱가공기술의 일부분인 사출성형제품은 2∼. 30mm, 또는 더 이상 두께가 두꺼운 제품을 요구하는 수. 4mm의 두께가 제품 구조적으로 적당하나, 산업의 발달. 요가 증가하면서 두꺼운 제품을 생산하기 위한 다양한. *. Corresponding Author : Chang-Ki Woo(Incheon National Univ.) Tel: +82-10-3670-8815 email: [email protected] Received September 30, 2015 Accepted November 6, 2015. Revised (1st October 22, 2015, 2nd November 6, 2015) Published November 30, 2015. 7729.

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