목차

1. 서 론 ··························································································· 1
1.1 연구 배경 ··················································································1
1.2 연구 현황 ··················································································3
1.3 연구 목적 및 내용 ·································································· 4
2. 관련 이론 ··················································································· 6
2.1 BMC 재료의 특성과 성형조건 ············································· 6
2.1.1 재료 특성 ·············································································· 6
2.1.2 재료의 결정 ·········································································· 7
2.1.3 재료와 성형부품의 취급 ···················································· 7
2.1.4 재료와 게이트와의 관계 ···················································· 7
2.1.5 재료와 성형조건 ·································································· 8
2.1.6 멜트 온도 ·············································································· 8
2.1.7 온도 설정 ·············································································· 9
2.1.8 사출 속도 ·············································································· 9
2.1.9 사출압 ··················································································· 9
2.1.10 스크류 회전속도(rpm) ····················································· 9
2.1.11 배압 ·····················································································10
2.1.12 운전 정지 및 재생, 사상 ················································· 10
2.1.13 전형적인 성형부품 ·························································· 10
2.2 BMC 사출성형의 특징 ························································· 11
2.2.1 사출성형 ·············································································· 11
2.2.2 사출성형기와 공정 ···························································· 12
2.2.3 사출성형의 용도 ································································ 12
2.2.4 사출성형품의 강도 ···························································· 13
2.3 사출성형 공정에서의 조건변화 ·········································· 13
2.3.1 캐비티 내에서의 상태변화 ··············································· 13
2.3.2 사출에서 보압으로의 전환타이밍 영향 ························· 16
2.3.3 보압의 영향 ········································································ 19
2.3.4 온도의 영향 ········································································ 22
2.3.5 속도의 영향 ········································································ 25
3. BMC 사출성형 금형 제작 및 시사출 실험 ························· 27
3.1 회전자 철심에 마그넷 고정을 위한 금형제작 ·················· 27
3.1.1 성형 해석 ············································································ 27
3.1.2 금형 제작 ············································································ 33
3.2 BMC 사출성형 금형 시사출 실험 ······································ 35
3.2.1 실험 조건 및 성형 ····························································· 35
3.2.2 제품 품질 평가 ·································································· 37
4. 실험 결과 및 고찰 ·································································· 39
4.1 성형 조건의 변화 ································································· 39
4.2 제품의 변화 ············································································39
5. 결론 ·························································································· 41
Reference ···················································································· 42
Abstract ························································································ 44