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WorksheetsMould Technology 01-09-2020
Total questions: 10
Worksheet time: 5mins
The purpose of preheating of Preforms is to ________.
reduce weight
increase hardness
remove moisture
heat fast
In compression moulding the mould temperature ranges from _________.
100-250˚C
130-350˚C
100-200˚C
200-450˚C
This final cure time for a very small thin walled part in compression moulding is as low as _____________.
10 seconds
20 seconds
30 seconds
40 seconds
The process of heating and compressing the preform material in to the mould is ___________.
Blow moulding
Transfer moulding
Injection moulding
Compression moulding
In compression moulds, polymerization of plastic takes place in _____________.
machine
mould
material
hopper
The plastic used in compression molding is __________.
thermoset plastic
thermoplastic
PMMA
PVC
Thermoset Plastic parts are manufactured by __________ process.
Compression moulding
Blow moulding
Rotational moulding
Extrusion
In Compression mould the entrapped air is released by _____________.
hand
degassing
hole
compressure
Externally landed positive mould is also called as _______________.
Open flash mould.
Horizontal flash mould.
Vertical flash mould.
Semi positive mould.
Internally landed positive mould is also called as ________________.
Open flash mould.
Horizontal flash mould.
Vertical flash mould.
Semi positive mould.
