Electronics

Electronics

1. Materials

   • Plastics
     • Thermo-plastics
       • Can be heated and shaped many times
         • HIPS
         • Acrylic
     • Thermo-setting
       • Can only be heated and shaped once
         • epoxy resin
         • GRP
   • Timbers
     • softwoods
       • pine
     • hardwoods
       • oak
   • Smart Materials
     • thermo-colour sheet
     • piezo
   • Metals
     • Non - ferrous metals
       • contain no iron and aren't attracted to magnets
         • copper
     • Ferrous metals
       • contain iron and are attracted to magents
         • mild steel

2. injection moulding

   • 1 - plastic powder is fed from the hopper into a hollow steel barrel
     • 2 - the heaters melt as the screw moves it along towards the mould
       • 3 - one enough melted plastic has accumulated , the hydraulic system forces the plastic into the mould
         • 4 - pressure is maintained on the mould until its cool enough to be opened