Compression Moulding (Leaving Cert Engineering): Flashcards
📚Flashcards
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12 cards from this deck
How many main plastic manufacturing processes exist?
How many main plastic manufacturing processes exist?
Seven
What is the best plastic type for compression moulding?
What is the best plastic type for compression moulding?
Thermosetting plastics (thermosets)
Two products made by compression moulding
Two products made by compression moulding
Car tyres and wellington boots
What is the 'charge' in compression moulding?
What is the 'charge' in compression moulding?
Specific amount of polymer material placed in mould
Two main components of the compression mould
Two main components of the compression mould
Upper movable half and lower fixed half
What system forces mould halves together?
What system forces mould halves together?
Hydraulic systems
What occurs during curing in compression moulding?
What occurs during curing in compression moulding?
Permanent chemical changes under pressure and heat
Device that removes finished product from mould
Device that removes finished product from mould
Ejector pins
Step 1 of compression moulding
Step 1 of compression moulding
Place charge in open, heated mould
Step 2 of compression moulding
Step 2 of compression moulding
Close mould with hydraulic pressure
Step 3 of compression moulding
Step 3 of compression moulding
Curing under pressure and heat
Step 4 of compression moulding
Step 4 of compression moulding
Eject finished product using ejector pins