Method and apparatus for obtaining data on the strain-stress relation of test pieces of green sand molds

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United States of America Patent

PATENT NO 5691481
SERIAL NO

08565849

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Abstract

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A method is disclosed for obtaining data on the strain-stress relation of a test piece of molding sand under a varying load to predict the degree of deformation of a green sand mold which is caused after the green sand mold is moved or filled with molten metal. The test piece of molding sand for a green sand mold is produced by compressing the molding sand. The varying load, and varying length of the test piece under the varying load, are measured at short intervals. Based on the measurements, the strain-stress relation of the test piece is calculated and then the data is stored. The stored data is used to predict the degree of deformation of a green sand mold produced from the same molding sand that is tested.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
SINTOKOGIO, LTD.NAGOYA220

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Nishida, Tadashi Toyokawa, JP 21 51

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (2)
* 5090249 Apparatus and method for testing the mechanical properties of a sample 10 1990
* 5379235 System and method for the measurement of mechanical properties of elastic materials 16 1994
 
GAS TECHNOLOGY INSTITUTE (1)
* 5396804 Apparatus and method for force-controlled fatigue testing 8 1993
 
MTS SYSTEMS CORPORATION (1)
* 4802367 Tensile test controller 9 1988
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Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
TOHOKU TECHNO ARCH CO., LTD. (1)
* 6694815 Liquefaction phenomenon prediction system 1 2003
* Cited By Examiner