SQA Advanced Higher Design and Manufacture Manufacture area overview quiz quiz

A thermoplastic is always stronger than a thermosetting plastic

A thermoplastic softens and can be reshaped repeatedly; a thermoset sets permanently on curing

A thermosetting plastic can be recycled but a thermoplastic cannot

There is no difference; both behave the same when heated

Mild steel

Stainless steel

Aluminium

High-speed steel

Because it is the cheapest metal available

Because it is the lightest of all metals

Because it resists corrosion, including in wet conditions

Because it can be melted and reshaped at room temperature

A pure metal with no other elements added

A material that combines two or more materials to gain properties neither has alone

A thermoplastic that has been recycled several times

A timber cut from a single hardwood tree

Powder is tumbled in a heated rotating mould to coat the walls

A heated tube is inflated against a mould to form a hollow shape

Molten thermoplastic is injected under pressure into a closed steel mould, then ejected

A laser cuts a flat sheet from a digital file

Because the steel mould is cheap and quick to make

Because each part is built slowly layer by layer

Because no mould or tooling is needed at all

Because the high tooling cost is spread over millions of fast, identical parts

Rotational moulding

Drop forging

Laser cutting

Compression moulding

It needs no tooling and builds from a CAD model, but cost per part stays high

It is the fastest process for making millions of identical parts

It can only make metal parts, never plastic

It requires a very expensive steel mould for every part

To add weight to the part for stability

To let the part release cleanly from the mould without sticking

To make the surface rougher for grip

To join two parts together permanently

It makes the part heavier and stronger in one area

It lets the part cool and shrink evenly, avoiding sink marks and warping

It removes the need for any draft angles

It allows the use of permanent joints only

To take a screw or locate a pin for assembly

To add a decorative pattern to the surface

To stiffen and strengthen the part without thickening the wall

To create an undercut that traps the part in the mould

Welding two steel parts together

Bonding parts with adhesive

Riveting two sheets together

Fixing parts with screws or snap-fits

It holds parts in the correct position for fast, accurate, repeatable joining

It permanently bonds parts so they cannot be separated

It increases the number of separate parts in the product

It removes the need to test the product at all

One-off production

Batch production

Continuous production

Mass production

It guarantees production never stops even if supply fails

It removes the need for any quality assurance

It cuts the cost, space and waste of holding large stocks

It allows products to be made entirely by hand

A brand sign such as a logo or name

The appearance and shape of a product

Original creative work such as drawings, automatically

A new invention or how something works, in exchange for publishing it

Designing for re-use, repair and recyclability and improving efficiency

Designing the product to fail and be replaced as quickly as possible

Choosing the hardest-to-recycle composite available

Using as much material and energy as possible in manufacture