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Herman

  • More Accurate Molds
  • Reduced Cleaning Costs
  • True-to-Pattern Casting
  • Reduced Mold Wall Movement
  • Casting Weight Reduction up to 10%
  • Better Casting Surface Finish
  • Maximum Versatility

Increasing production rates and improving mold quality were the major goals of Herman engineers who pioneered high pressure molding in the 1950s. The engineers developed a system of squeezing sand around a pattern by using hydraulic pressure which achieves molds of 90-95 mold hardness.

The self-compensating automatic squeeze head is the basic element of the Moldmaster squeeze station, and produces the high pressure molds. An assembly of individual hydraulic cylinders with squeeze feet transmit hydraulic pressure to the molding sand, compressing it as required. Multiple squeeze feet “contour” to any pattern shape, flowing the sand in such a way as to insure high density molds.

This method produces a uniform density which keeps mold wall movement to a minimum when molds are poured. It works equally well with large or small mold sizes.