Manufacturing Processes Flashcards
Sintering
Make products form metal powders.
- Mould
- High pressure and temp
Fused deposition modelling
Prints layer by layer using polymer
- 3D Printing
Hacksaw
Metals & Polymers
Coping saw
Polymer or timber
Tenon saw
Timber
Jigsaw
Motor to move saw blade
- Most types of materials
Turning
Using lathe to make round parts
Milling
Rotating tool to remove metal one layer at a time.
Chemical etching
Chemicals used to remove materials
Photo-etching
Chemical etching used to make PCBs
Forming
Changes dimensions and shape of a material
Shaping
Pouring/forcing liquids into moulds to make objects
Folding
Bending material over on itself.
Mallet & vice
Press forming
Make shapes from metal sheets
- Mould made from two parts, pushed together
Press moulding
Makes shapes from polymer sheets
- Thermoplastic heated until flexible
Punching
Hole is made, material pushed out is scrap.
Stamping
Shape pushed out of sheet is desired part.
Sand casting
Mould made from sand is filled with molten metal
Pressure die casting
Molten metal is forced into reusable metal mould
- Mould is expensive, two halfs
Injection moulding
Polymer forced into reusable metal mould
Threaded fastenings
Products used to make temporary joints
Threaded fastenings examples
- Wing nut
- Hexagonal nut
- Bolt
Rivets
Hold metal sheets together
Pop rivets
Holds metal sheets together
- Only needs access to one side
- Pin & Rivet
