
模概CH6-1
Quiz
•
Professional Development
•
12th Grade
•
Practice Problem
•
Medium
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Used 4+ times
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12 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
在塑膠射出廠中,操作人員發現成形品翹曲且表面不良,可能是模具溫度過低,應如何改善?
Answer explanation
模具溫度過低會造成冷卻過快,使成形品翹曲與表面品質不佳,提高模具溫度可改善。
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
操作時為提高生產效率,技師決定將模具冷卻速度加快,此舉可能會造成什麼影響?
Answer explanation
冷卻過快導致塑料急冷,分子排列不穩,容易出現後收縮現象。
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
射出時模具溫度過高,產品雖然光滑但卻變形,最可能的原因為何?
Answer explanation
模溫高會造成收縮率大,進而導致變形。
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
模具設計師在設計冷卻系統時,應考量何者為模溫控制的最主要機制?
Answer explanation
模具中熱量主要透過冷媒的傳導方式來控制模溫。
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
製程工程師發現塑料冷卻不均,決定改變冷卻水流速,其主要目的是?
Answer explanation
提高冷卻水流速可增加熱交換效率,使冷卻更均勻有效。
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
生產過程中,使用PP材料,其模具溫度應控制在哪個範圍?
Answer explanation
PP(聚丙烯)的建議模具溫度為55~65°C。
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
模具連續生產後溫度上升,若使用冷卻水控制,理想水溫應落在哪範圍?
Answer explanation
連續成形時可用低溫水5~20°C帶走熱量,防止模具過熱。
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