Method for the removal of refractory porous shapes from mating formed materials
Abstract
Abstract A METHOD FOR THE REMOVAL OF A POROUS SHAPE (INCLUDING CORES) WITH INTERCONNECTED VOIDS FROM A MATING SHAPE OF FORMED MATERIAL, (SUCH AS A CASTING) WHICH HAS BEEN PREPARED FROM THE SURFACES DEFINED BY THE POROUS SHAPE IS DESCRIBED. A SEALED CHAMBER IS PROVIDED TO CONFINE THE POROUS SHAPE AND THE MATING SHAPE. AN EXPLODABLE GASEOUS COMPOSITION SUCH AS HYDROGEN OR METHANE (NATURAL GAS) AND OXYGEN OR OXYGEN ENRICHED AIR IS INTRODUCED INTO VOIDS IN TH POROUS SHAPE IN THE SEALED CHAMBER AT SUPERATMOSPHERIC PRESSURES AND EXPLODED SO AS TO WEAKEN THE POROUS SHAPE WITHOUT DAMAGING THE MATING SHAPE. THE WEAKENED POROUS SHAPE IS READILY REMOVED FROM THE MATING FORMED MATERIAL, PREFERABLY AS FINELY DIVIDED PARTICLES. THIS RESULT IS PRODUCED BECAUSE OF THE UNIFORM EFFECT OF THE EXPLOSION OF THE GASEOUS COMPOSITION WHICH WAS HONOGENEOUSLY DISTRIBUTED THROUGHOUT THE INTERCONNECTED VOIDS IN THE POROUS SHAPE.
Inventors
- 👤 C Vinton
- 👤 W Rice
Bibliographic Details
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