Preliminary communication

Studying the properties of shell molds manufactured under industrial conditions using unsteady-state pressure

V. Yu. Kulikov ; Karaganda State Technical University, Karaganda, Kazakhstan
Sv. S. Kvon ; Karaganda State Technical University, Karaganda, Kazakhstan
M. K. Ibatov ; Karaganda State Technical University, Karaganda, Kazakhstan
Ye. P. Chsherbakova orcid.org/0000-0001-6678-6673 ; Karaganda State Technical University, Karaganda, Kazakhstan
D. A. Issagulova ; Karaganda State Technical University, Karaganda, Kazakhstan
A. M. Dostaeva orcid.org/0000-0002-1982-2368 ; Karaganda State Technical University, Karaganda, Kazakhstan

Abstract

The article deals with studying the properties of shell molds. A series of tests was carried out using ground broken chamotte bricks. The tests show that the most durable mold is obtained using the ratio of quartz sand and fireclay chips in approximately the same proportions. There were used different base pressures during shaping, the most rational was recognized 0,2 MPa. A field study showed an exponential dependence of density on base pressure. The pressure of 0,25 MPa allows obtaining dense molds that withstand transportation between workshops. The dependences of the sand density on forging pressure, bending strength on the applied static pressure, gas permeability of the sand-resin shell depending on the duration of the shaping, gas permeability of the mold on the sintering time and gas permeability of the mold on the sintering temperature are considered.

Keywords

casting; shell mold; sand-resin mixture; pressure; quality

Hrčak ID:

241170

URI

https://hrcak.srce.hr/241170

Publication date:

1.10.2020.

Visits: 1.204 *