AQA GCSE Engineering
Describe the process of Injection Moulding. - ANS-Plastic granules fed into hopper
Piston is drawn back
Heaters melt plastic
Piston moves forward forcing molten plastic into mould via sprue
Plastic solidifies
Mould opened and part removed
\Describe the process of riveting. - ANS-The hole is drilled
The rivet is placed in the hole
The support dolly supports the rivet
The rivet is hit with ball-peen hammer
Snap is placed over rivet and hit
Riveted joint is complete
\Explain how environmental issues affect design decisions during manufacture. (6 Marks) -
ANS-Using less energy
Use less materials
Repairable products
Recyclable materials
Extended lifetime
Reuse product for a different use
\Give 1 advantage of pressure die casting. - ANS-Good surface finish
\Give 1 disadvantage of pressure die casting. - ANS-Dies (moulds) are expensive to make.
\Give 3 advantages of CAM. - ANS-Results are consistent in large-scale production
Accurate surface finish
Speeds up production rate
\Give 3 advantages of robots. - ANS-Can carry out tasks that would be difficult for a human
Faster work rate than humans
Doesn't need breaks unlike humans
\Give 3 disadvantages of CAM. - ANS-Expensive software
Requires training
Can be slower than traditional methods for one-off production.
\Give 3 disadvantages of robots. - ANS-Robots are expensive to buy/build
Takes a long time to write the programs
Errors can cause huge problems
\Give an example of a permanent joint. - ANS-Welding / Brazing / Soldering / Riveting /
Adhesives
\Give an example of a temporary joint. - ANS-Threaded fastenings
\How must dimensions be drawn? - ANS-Coloured in arrows heads with extension lines not
touching the edge of the drawing.
\Name 1 disadvantage of permanent joints. - ANS-They can't be taken apart for maintenance
\Name 2 advantages of permanent joints. - ANS-They don't come loose
They are strong
\Name 2 properties of Aluminium alloy. - ANS-Corrosion resistant
Very tough
Describe the process of Injection Moulding. - ANS-Plastic granules fed into hopper
Piston is drawn back
Heaters melt plastic
Piston moves forward forcing molten plastic into mould via sprue
Plastic solidifies
Mould opened and part removed
\Describe the process of riveting. - ANS-The hole is drilled
The rivet is placed in the hole
The support dolly supports the rivet
The rivet is hit with ball-peen hammer
Snap is placed over rivet and hit
Riveted joint is complete
\Explain how environmental issues affect design decisions during manufacture. (6 Marks) -
ANS-Using less energy
Use less materials
Repairable products
Recyclable materials
Extended lifetime
Reuse product for a different use
\Give 1 advantage of pressure die casting. - ANS-Good surface finish
\Give 1 disadvantage of pressure die casting. - ANS-Dies (moulds) are expensive to make.
\Give 3 advantages of CAM. - ANS-Results are consistent in large-scale production
Accurate surface finish
Speeds up production rate
\Give 3 advantages of robots. - ANS-Can carry out tasks that would be difficult for a human
Faster work rate than humans
Doesn't need breaks unlike humans
\Give 3 disadvantages of CAM. - ANS-Expensive software
Requires training
Can be slower than traditional methods for one-off production.
\Give 3 disadvantages of robots. - ANS-Robots are expensive to buy/build
Takes a long time to write the programs
Errors can cause huge problems
\Give an example of a permanent joint. - ANS-Welding / Brazing / Soldering / Riveting /
Adhesives
\Give an example of a temporary joint. - ANS-Threaded fastenings
\How must dimensions be drawn? - ANS-Coloured in arrows heads with extension lines not
touching the edge of the drawing.
\Name 1 disadvantage of permanent joints. - ANS-They can't be taken apart for maintenance
\Name 2 advantages of permanent joints. - ANS-They don't come loose
They are strong
\Name 2 properties of Aluminium alloy. - ANS-Corrosion resistant
Very tough
