Metalcasting facilities can use reduced pressure
testing to hold density, which is a reflection of gas content and metal quality, within a certain range, Groteke said.
There are several possible causes for the problems you have identified, and they deal with your sampling processes, the way you are performing the reduced pressure
test (RPT) and variations in the samples themselves.
In New York's lackluster real estate market where there is little new construction activity, consulting engineering firms are finding various opportunities in the area of rehabs and renovations One hot spot in the market concerns the installation of backflow prevention devices or RPZ (reduced pressure
zone backflow prevention devices) which are now required by the city s Department of Environmental Protection (DEP).
N,N'-dimethylacetamide (DMAc) was distilled under a reduced pressure
(60 [degrees] C/11 mm Hg).
1 shows how filtration--following a degassing--can provide a boost in specific gravity results as measured with a reduced pressure
According to this theory, the drop in ocean heights reduced pressure
on the seabed and destabilized buried deposits of methane hydrates--icelike molecules that contain solid water and methane gas.
The reduced pressure
testing of aluminum melts for evaluating hydrogen levels in the molten alloy has been performed using the same basic method for more than 50 years.
A simple but effective testing method that has been used for years is the reduced pressure
Q We use the reduced pressure
test (RPT) to measure gas porosity in our aluminum melt.
If the amine container experiences a leakage or reduced pressure
prob1em, the safety system takes over, handling the problem and preventing any dangerous (and potentially flammable) spills from occurring.
One other measure is available to foundry personnel on the shop floor-- the Reduced Pressure
Test (RPT) (Fig.
Foundries depend on the Reduced Pressure
Test (RPT) to assess gas and inclusion levels in molten aluminum alloys.