Porosity Vacuum Sample Machine
Product Details:

Application	Industrial
Material	Mild steel
Grade	Automatic
Voltage	220 to 250 V
Power	120W
Pressure	0.1Mpa
Surface treatment	Polished
Phase	3 Phase

In the Quality management of Aluminum Alloy Casting, porosity is a major factor which is detrimental in terms of surface quality, corrosion resistance, and mechanical properties.Hydrogen, which easily dissolves in molten aluminum which causes gas porosity. Reduced Pressure Test (RPT) is the most widely used technique in aluminum foundries.RPT is solidifying a sample of molten aluminum under reduced pressure (vacuum) below 100mmHg. The reduced pressure enhances pore formation and pore expansion, giving out a visibly more porous sample than that solidified under atmospheric conditions. Porosity assessment is done in the following manner:
Features:
Viewing the top of the sample. A puffed up surface indicates heavy gas content,
Whereas a smooth &/or a concave surface indicates mild or acceptable gas content.
Cutting the sample & comparing the cut surface with a photographic standard.
Using a Densitometer, to compare the density of the sample solidified under vacuum and a sample solidified in the atmosphere.