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Home  >>  Product >>  Lost Foam Casting Black Area Equipment

  • Negative Pressure System
  • Negative Pressure System

Negative Pressure System

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The negative pressure system is composed of vacuum pump, steam water separator, steady voltage filter, distributor and vacuum meter. Commonly used types SK-20, SK-30 series, 2BE-252, 2BE-253 series. It has second compaction on vibrated molding sand,and enhance static friction between the sand grains; producing a stable negative pressure field for the sandbox to set the dry sand under atmospheric pressure,sucking up gases from the vaporization of the foam pattern to avoid casting porosity;increase the hot metal flow velocity and speeding type, greatly improve the casting qualified rate.

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