표제지
목차
국문요약 9
Abstract 10
제1장 서론 11
1.1. 연구배경 및 목적 11
제2장 사출 이론 12
2.1. 사출성형공정 12
2.2. 사출성형기 14
2.2.1. 사출기구 및 형체기구 15
2.3. 휨(warpage)의 원인 17
제3장 게이트(Gate)의 위치에 대한 휨 변형 19
3.1. 시험제품 19
3.2. 시험금형의 구조 20
3.2.1. 게이트(Gate)의 종류 21
3.2.2. 게이트의 위치 선정 22
3.3. 원재료에 따른 휨 변형 23
3.3.1. 시험 사출 조건 23
3.3.2. PBT 원재료 결과 24
3.3.3. PBT + GF30% 원재료 결과 28
3.3.4. PA66+GF30% 원재료 결과 32
3.4. 결과비교 36
제4장 결론 37
참고문헌 38
Table 1. Clamping unit 41
Table 2. Injection unit 41
Table 3. PBT(B4520) Injection Mold Try Sheet 50
Table 4. PBT+GF30%(B4300G6) Injection Mold Try Sheet 51
Table 5. PA66+GF30%(70G30HSL) Injection Mold Try Sheet 52
Table 6. PBT Physical Properties 53
Table 7. PBT+GF30 Physical Properties 54
Table 8. PA66+GF30 Physical Properties 55
Fig.1. Injection processing factors 39
Fig.2. Krauss Maffei KM 80 - 220 C2 40
Fig.3. Heat radiation amount difference at each position of the molded article 42
Fig.4. Inside the box warpage moldings 43
Fig.5. Inside the box warpage moldings 44
Fig.6. Prototype A, B, C 3D Modeling 45
Fig.7. Upper Injection Mold & Lower Injection Mold 46
Fig.8. Injection Mold Sectional View 47
Fig.9. Submarine gate 48
Fig.10. Three gate positions 49
Fig.11. PBT Warpage Test Prototype A-1 Graph 56
Fig.12. PBT Warpage Test Prototype A-2 Graph 57
Fig.13. PBT Warpage Test Prototype A-3 Graph 58
Fig.14. PBT Warpage Test Prototype B-1 Graph 59
Fig.15. PBT Warpage Test Prototype B-2 Graph 60
Fig.16. PBT Warpage Test Prototype B-3 Graph 61
Fig.17. PBT Warpage Test Prototype C-1 Graph 62
Fig.18. PBT Warpage Test Prototype C-2 Graph 63
Fig.19. PBT Warpage Test Prototype C-3 Graph 64
Fig.20. PBT_GF30% Warpage Test Prototype A-1 Graph 65
Fig.21. PBT_GF30% Warpage Test Prototype A-2 Graph 66
Fig.22. PBT_GF30% Warpage Test Prototype A-3 Graph 67
Fig.23. PBT_GF30% Warpage Test Prototype B-1 Graph 68
Fig.24. PBT_GF30% Warpage Test Prototype B-2 Graph 69
Fig.25. PBT_GF30% Warpage Test Prototype B-3 Graph 70
Fig.26. PBT_GF30% Warpage Test Prototype C-1 Graph 71
Fig.27. PBT_GF30% Warpage Test Prototype C-2 Graph 72
Fig.28. PBT_GF30% Warpage Test Prototype C-3 Graph 73
Fig.29. PA66 Warpage Test Prototype A-1 Graph 74
Fig.30. PA66 Warpage Test Prototype A-2 Graph 75
Fig.31. PA66 Warpage Test Prototype A-3 Graph 76
Fig.32. PA66 Warpage Test Prototype B-1 Graph 77
Fig.33. PA66 Warpage Test Prototype B-2 Graph 78
Fig.34. PA66 Warpage Test Prototype B-3 Graph 79
Fig.35. PA66 Warpage Test Prototype C-1 Graph 80
Fig.36. PA66 Warpage Test Prototype C-2 Graph 81
Fig.37. PA66 Warpage Test Prototype C-3 Graph 82