Studying the properties of sand-resin molds made using a variable load

V. Yu. Kulikov, A. Z. Issagulov, M. K. Ibatov, D. A. Issagulova, T. V. Kоvaleva, Ye.P. Chsherbakova
2020 Metalurgija  
The article investigated both shell mold samples and casting samples. The castings were made of 35L steel. A scheme of the formation of a sand-tar shell form using variable pressure was presented. As can be seen from the graphs, the application of the load during the formation of the shell form significantly affects the size of the burn in the direction of its decrease. The pressure of 0,18 ... 0,25 MPa, which is defined as optimal for obtaining the forms of castings «Link», can be considered
more » ... can be considered very satisfactory for the value of the burnout. As pressure increases, the rate of decline of the burn on the castings decreases. Obtained in semi-industrial conditions, the samples were investigated in the laboratory of KSTU. The strength, hardness and gas permeability of the forms were determined.
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