Evaporative foam risers with exothermic topping

Details Evaporative foam risers with exothermic topping Evaporative foam risers with exothermic topping

2007-09-18

2007-09-18

Johnson, Jonathan (Department: 1725)

Metal founding

Means to shape metallic material

United particle type shaping surface

C164S244000

Reexamination Certificate

active

10855550

ABSTRACT:
This invention consists of the use of an evaporative foam riser made with expanded polystyrene and with a cavity on top that contains an exothermic mixture. The reaction of the exothermic material, which is set off when it comes in contact with the metal, prolongs the solidification time of the riser thus rendering it more effective.

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