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Method and apparatus for obtaining data on the strain-stress relation of test pieces of green sand molds
Method and apparatus for obtaining data on the strain-stress relation of test pieces of green sand molds
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机译:获取有关生砂铸型试件应变应力关系数据的方法和装置
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摘要
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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