MEASUREMENT OF THE PRESSURE OPERATING ON THE SURFACE OF IRON CASTNGS IN SOLIDIFICATION

Abstract

The pressure of gas on the surface of iron and the Al castings during solidification were measured immediately. Some relations were found between this pressure and (1) the casting temperature, (2) the moisture content in the skin sand, (3) the permeability of the molding sand in frame, (4) the thickness of castings and others.
For obtaining sound castings, it is necessary that pressure is kept as small as possible duringsolidification.