Photo of the Day: Casting a Tank Hull

This rather dramatic picture is of the manufacturing process of a cast tank hull.  While the photo does not have a caption, we think this is the hull of a Swiss PZ 61 or Pz 68 tank.  If that is correct, then this photo would be of a facility of the George Fischer company of Schaffhausen.




  1. That’s not casting, that’s heat treating!


  2. I wonder how long it takes to get that much metal up to that kind of temperature.


  3. Grant Cullen says:

    Looks like oil bath tempering of the pre-heated casting. The hull will have been cast , fettled (de-scaled), runners and risers removed, then reheated to homogenise, before quenching. Looks amodern plant.


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