Joining

Joining

1. join another piece

2. welding and soldering

   • process of joining metals
     • using pressure and heat
       • soft soldering
         • We use a tin-lead alloy.
         • temperature of 400°C.
       • Oxyacetylene welding
         • can reach temperatures of over 3000°C.
       • hard soldering
         • brass or copper heat
         • temperature of 800°C.
       • others:
         • rivets
           • one tube with a head in the extreme
           • it insert in the apertures
           • riveter=joing pieces
         • Press fit joint
           • a pasador bigger than the aperture.
             • insert in the aperture ussing a hammer or pressure
             • sometimes heat the secction
               • dilatare the aperture
         • Adhesives
           • hot melt adhesives
           • waterproof
           • instant glues
           • before stick the pieces
             • scrape the surface to improve its adhesion

3. temporaly joinings

   • nuls and bolts
   • Screws
   • Threaded stay bolts