Measurement of elastic modulus and evaluation of viscoelasticity of foundry green sand

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Measurement of elastic modulus and evaluation of viscoelasticity of foundry green sand

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Elastic modulus is an important physical parameter of molding sand; it is closely connected with molding sand's properties. Based on theories of rheology and molding sand microdeformation, elastic modulus of molding sand was measured and investigated using the intelligent molding sand multi-property tester developed by ourselves. The measuring principle was introduced. Effects of bentonite percentage and compactibility of the molding sand were experimentally studied. Furthermore, the essential viscoelastic nature of green sand was analyzed. It is considered that viscoelastic deformation of molding sand consists mainly of that of Kelvin Body of clay membrane, and elastic modulus of molding sand depends mainly on that of Kelvin Body which is the elastic component of clay membrane between sands. Elastic modulus can be adopted as one of the property parameters, and can be employed to evaluate the viscoelastic properties of molding sand.

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《中国铸造》|2004年第1期|40-44|共5页
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School of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110023, Liaoning , P.R. China;

School of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110023, Liaoning , P.R. China;

Liaoning Yi Tong Machinery & Automobile Information Co. Ltd., Shenyang 110016, Liaoning, P.R.China;

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原文格式 PDF
正文语种 chi
中图分类铸造;
关键词
molding sand; viscoelasticity; elastic modulus; clay membrane; Kelvin Body;

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Measurement of elastic modulus and evaluation of viscoelasticity of foundry green sand

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