고압 주조용 고강도 중자에 관한 연구

다국어 초록 (Multilingual Abstract)

High pressure die casting is used in manufacture of the various auto parts due to its excellent productivity compared to any other casting processes. However, it has disadvantage which is difficult to form parts having complex inner shape or under-cut shape by its metal mold. To solve this problem, collapsible cores, which can withstand high pressure and speed of the melt flow on casting and easily be removed after casting, have recently been developed. There are three types of them; sand, salt, and plastic core. The purpose of this study is to develop the sand core which is excellent with respect to productivity, cost, and applicability. In this study, cerabeads was used as core sand and its particle size and resin contents were modified to improve shear strength. In addition, two coating agents were applied to the core and their concentration was adjusted. As the results, the core whose shear strength is above 110kgf/㎠ was obtained, and practical high pressure die casting test using it was performed to verify its applicability.

목차 (Table of Contents)

• Abstract
• 1. 서론
• 2. 중자 시편 테스트
• 3. 중자 도형 테스트
• 4. 고강도 중자 실물 검증
• 3. 결론
• References