WorksheetsHigher Design: Understanding Industrial Manufacture
Total questions: 20
Worksheet time: 10mins
In what forms are plastics usually supplied for processing?
Sheets and blocks
Moulding powder, granules, or chips
Liquids and gels
Fibers and threads
What is the purpose of using additives in plastic processing?
To increase the weight
To change the color
To transform base plastics into a wide range of versatile materials
To make them biodegradable
What is the shape of the component extracted from the mould?
Random shape
Exact shape of the cavity
Cylindrical
Spherical
Which material is NOT typically used in Injection Moulding?
Polyamide (Nylon)
Polypropylene (PP)
Polystyrene
Steel
What is the purpose of webs in Injection Moulding?
Decoration
Insulation
Strength
Weight reduction
What is a typical product produced using Injection Moulding?
Safety helmets
Wool sweaters
Stone sculptures
Paper bags
Which of the following is a benefit of using compression moulding?
It requires no heat
It allows for complex shapes
It is only suitable for metals
It uses no pressure
What happens to the granules in the extrusion process?
They are cooled
They melt into a liquid
They are compressed
They are painted
What is the purpose of the die in the extrusion process?
To heat the material
To determine the shape
To cool the material
To feed the granules
What happens to the material after it is extruded?
It is melted again
It is cooled and solidified
It is compressed
It is painted
What is the function of a heated billet in the extrusion process?
To cool the die
To be forced through a die
To lubricate the ram
To hold the die in place
What is the role of the ram in the extrusion process?
To cool the billet
To force the billet through the die
To hold the die in place
To shape the billet
Which of the following is a common defect in injection moulding?
Corrosion
Cracks
Rust
Flash
What is the main advantage of using a hot runner system in injection moulding?
Reduced cycle time
Increased material waste
Higher energy consumption
More complex mold design
What is the main function of a sprue in injection moulding?
To add color to the plastic
To eject the finished product
To cool the mould
To guide the molten plastic into the mould cavity
What is the role of a hopper in the extrusion process?
To cool the extruded product
To shape the extruded product
To heat the material
To feed the granules into the extruder
What is the primary function of a cooling system in injection moulding?
To increase cycle time
To heat the mould
To solidify the molten plastic
To add color to the plastic
What is the main advantage of using thermoplastics in injection moulding?
They are biodegradable
They require no additives
They can be remelted and reshaped
They are more expensive
Which process is commonly used to create hollow plastic parts?
Injection moulding
Blow moulding
Compression moulding
Extrusion
Which of the following is a disadvantage of using thermosetting plastics in moulding?
They are more expensive
They can be remelted and reshaped
They cannot be remelted once set
They require no additives
