Method and apparatus for evaluating the flowability of core forming materials
First Claim
1. A method of evaluating the flowability of a core-forming material comprising the steps of:
- providing a test fixture forming a pair of substantially parallel core-forming passages several inches long and joined adjacent their one ends by a transverse passageway, with vent openings at their one ends and with an inlet opening at the other end of a first one of the core-forming passageways for admission of core-forming material;
blowing the core-forming material into the inlet opening until the first one core-forming passageway is filled;
curing the core-forming material in the test fixture;
opening the test fixture and removing the cured core-forming material; and
evaluating the flowability of the core-forming material from the quantity of core-forming material that has entered the second one of the pair of substantially parallel core-forming passageways.
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Accused Products
Abstract
A method and apparatus for evaluating the flowability of a core-forming material in which an airborne core-forming material is blown downwardly into a first, downwardly extending, long and confining passageway for a predetermined time, and the airborne core-forming material is allowed to escape the first long, confining passageway by diverting it into a short, transverse passageway, and further diverting it into a second, upwardly extending confining passageway, and the flowability of the core-forming material is evaluated from the quantity of core-forming material that has entered the second, upwardly extending confining passageway.
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Citations
17 Claims
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1. A method of evaluating the flowability of a core-forming material comprising the steps of:
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providing a test fixture forming a pair of substantially parallel core-forming passages several inches long and joined adjacent their one ends by a transverse passageway, with vent openings at their one ends and with an inlet opening at the other end of a first one of the core-forming passageways for admission of core-forming material;
blowing the core-forming material into the inlet opening until the first one core-forming passageway is filled;
curing the core-forming material in the test fixture;
opening the test fixture and removing the cured core-forming material; and
evaluating the flowability of the core-forming material from the quantity of core-forming material that has entered the second one of the pair of substantially parallel core-forming passageways. - View Dependent Claims (2, 3, 4, 5, 6)
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- 7. An apparatus for testing the flowability of mixtures for forming cores for castings comprising a metal test fixture forming a pair of substantially parallel core-forming passages joined adjacent their one ends by a transverse passageway, and including vent openings at their one ends, an inlet for core-forming materials at the other end of one of the substantially parallel core-forming passages, and means for admitting a flow of airborne core-forming material in the inlet opening at the other end of the one of the substantially parallel core-forming passageways.
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12. A method of evaluating the flowability of a core-forming material comprising the steps of:
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blowing an airborne core-forming material downwardly into a first, downwardly extending, long, confining passageway for a predetermined time;
allowing the airborne core-forming material to escape the first long, confining passageway by diverting it into a short, transverse passageway, and further diverting it into a second, upwardly extending, confining passageway; and
evaluating the flowability of the core-forming material from the quantity of core-forming material that has entered the second, upwardly extending, confining passageway. - View Dependent Claims (13, 14, 15, 16, 17)
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Specification