CASTING DEVELOPMENT BY COMPUTER MODELING

Award Information
Agency:
Department of Defense
Branch
Navy
Amount:
$245,000.00
Award Year:
1987
Program:
SBIR
Phase:
Phase II
Contract:
n/a
Award Id:
4122
Agency Tracking Number:
4122
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
4561 Camino Molinero, Santa Barbara, CA, 93110
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Dr William Oldfield
(805) 964-8781
Business Contact:
() -
Research Institution:
n/a
Abstract
THIS PROJECT IS DESIGNED TO PROVIDE A TOOL TO IMPROVE THE QUALITY OF CASTINGS PRIMARILY BY CONTROL OF MICROSHRINKAGE. IT WILL HAVE TWO OBJECTIVES; (A) IMPROVE THE QUALITY OF COMPONENTS CURRENTLY PRODUCED BY CASTING, AND (B) FACILITATE THE APPLICATION OF CASTING METHODS TO OTHER COMPONENTS THUS REDUCING COSTS. WE PROPOSE TO ACHIEVE THESE OBJECTIVES BY DEVELOPING A COMPUTER MODEL FOR THE CASTING PROCESS WHICH PREDICTS MICROPOROSITY FORMATION. THE MAIN TASK ADDRESSED IN THIS PROPOSAL IS THE DETAILED TREATMENT OF THE METALLURGICAL FEATURES OF SOLIDIFICATION. THE MODEL WILL HAVE THE ABILITY TO PREDICT THE DEPTH OF THE FREEZING INTERFACE, THE FINENESS OF THE GROWING DENDRITES, AND THE PARTITIONING OF DISSOLVED GAS, AND WILL COMPUTE FLUID FLOW NEAR THE ADVANCING SOLID-LIQUID INTERFACE. HENCE, WE WILL PREDICT THE POSITION AND SIZE OF VOIDS FORMED DURING FREEZING. THE RESULTS WILL BE COMPARED WITH OBSERVATIONS. BY ADDING A MORE DETAILED HEAT FLOW TREATMENT (IN TASK III BUT MAINLY IN PHASE II), COUPLED WITH PRACTICAL EXPERIENCE AND SOME EXPERIMENTATION THE MODEL COULD BE READILY EXTENDED TO MORE COMPLEX CASTIG SHAPES.

* information listed above is at the time of submission.

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