Joining

Joining

1. Permanent joints

   • Adhesives
     • there're three types
       • hot melt adhesive
       • waterproof
       • instant glues
   • Press fit joint
     • insert the opening using a hammer
   • Rivets
     • is a metal tube
     • whit a riveter place to the other end
   • soldering
     • Soft soldering
       • use tin-lead alloy
       • hited by electrical soldering iron
     • Hard soldering
       • Brass or copper heated
         • by blowtorch
   • welding
     • Oxyacetylene welding
       • temperature 3000ºC

2. Temporary joints

   • screws
     • join one pieces to another
   • nunts and bolts
     • bolt insert
     • Washers protect
   • Threaded stay bolts
     • middle section is smooth
     • bolt has grooves at the end
   • Splined shafts
     • have grooves and rotate
   • Sliding joints
     • two pieces have grooves
       • they join togheter
   • Keyed joint
     • join two objects with a key