2.3 New Methods Of Manufacture Flashcards
What is electrohydraulic forming?
Creating a shockwave, the forms the sheet material into the mould
The shock wave is created by an electrical ark between electrodes that vaporises surrounding water
In a fraction of a second
How is the shockwave created in electrohydraulic forming?
From the electrical ark between the electrodes, that vaporises the surrounding water
what causes the shockwave in electrohydraulic forming?
the electrical ark between the electrodes which vaporises the water
what are the main components of electrohydraulic forming?
electrodes
water
mould
sheet material
thin material wire
why use electrohydraulic forming?
- creates complex shapes with fine detail
- can use a wide range of materials
- very fast
- single stage process
what is advanced 3D printing?
fusing material powder with a laser layer by layer until a complete objects made
advanced 3D printing negatives?
most expensive
advanced 3D printing positives?
only way complex shapes can be created when using metal
what are the uses of advanced 3D printing?
car and aero industry
what are the two types of advanced 3D printing?
SLS, for non metals
SLM, for metals
what does SLS stand for (advanced 3D printing)?
selective laser smelting
what materials are SLS used on?
non metals
what does SLM stand for?
selective laser melting
what materials is SLM used on?
metals
what is fibre injection moulding?
directly incorporating fibres into polymer
what is injection moulding?
injecting molten material into a mould
what does molten mean?
heated material from solid case
why are the fibres added to polymers?
to make the polymer…
- stronger
- stiffer
- lightweight
what other material is added the polymers and why?
glass
to increase plastic strength
what is physical vapour deposition?
coating of products in a thin film of material, with a surface finish
why is physical vapour deposition used?
- strength
- durability
what is the process of physical vapour deposition?
- the base material is heated and evaporates
- the vacuum condenses it onto the target material
- leaving a thin layer
what is the name of the process where metal is the base material?
electroplating
metal coating
laser beam welding positives:
- neat/accuracy
- very smooth
- can use a wide range of materials
- can use thin materials without damage
laser beam welding disadvantages:
- expensive
- must be in a clean environment to protect laser
what is laser beam welding also known as?
LBW
why is laser beam welding used instead of normal?
- stronger and stiffer weld
- lightweight components (welds)
what are the 5 new methods of manufacture?
electrohydraulic forming
laser beam welding
physical vapour deposition
advanced 3D printing
fibre injection moulding
