In the spray forming process a liquid metal stream is atomized by  an inert   gas into various droplet sizes (10-200µm)

 
   Twin atomizing.

  Metal flow 80-90Kg/minute (Approx.4.5t/hour).

  The droplets are propelled away from the atomizing  area by the     rapidly flowing atomization gas.

  The droplet trajectories are interrupted by a substrate which     serves to collect and solidify the droplets into a coherent,almost     fully dense preform. The substrate is continually moved and     lowered relative to the atomizer as the deposition proceeds.

  Large billets can be built in this way.

  Liquid droplets or pasty particles impinge on the collector.

  Solid particles are not collected in the atomizing tower as is the     case  liquid metal is atomized during the PM process.

 

Comparison of Carbide Sizes
Sverker 3/21 length 1-100µm
PM steel 2-5µm
Spray formed high alloy tool steel 1-20µm with main portion around 10µm
Summary
  Freedom from macro segrgations.
  Fine and uniform microstructure(Similar to a PM structure).
  Improved mechanical properties.
  Increased hardness.
  Improved dimensional stability.
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