degassing


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degassing

(dēgas´ing),
adj related to degasification, the process by which dissolved gas is removed from water or other liquid solutions.
References in periodicals archive ?
Typically, the best solution for dealing with porosity is to reduce hydrogen and oxides prior to casting via a treatment combining automated cleaning flux addition with rotary impellor degassing.
Our experiments showed that a plate sonotrode gave a continuous degassing efficiency of at least 50 per cent in the melt flow rising to 75 per cent in batch operation.
Having proved that ultrasound degassing of molten aluminium alloys is cleaner, greener and cheaper than current methods, our team of scientists and engineers from Brunei University is working within a European consortium to take the breakthrough a step further, achieving a continuous process that would allow us to apply degassing to much larger melt volumes and upstream from the casting mould.
Consumption of aluminium should be sufficient for ensuring removal of excessive oxidation (difference between really measured oxidation and minimal amount of oxygen, necessary for decarburization) in the semi-finished product, and at the same time it should not prevent reaction process of vacuum-oxygen decarburization of the metal in degassing (Figure 2).
Despite the effectiveness of helium as a degassing agent, though, some researchers shy away from using it because it can prove expensive, and the stocking of unwieldy canisters can be a hassle.
Tests show MAG degassing rate constants nearly identical to traditional compressed air sparging.
Vacuum degassing causes hydrogen to diffuse and separate from the liquid
Its primary products include miniaturized Teflon(R) diaphragm vacuum pumps and controls, Teflon(R) AF degassing chambers and transfer lines and spectrophotometer flow cells.
Project Management and Quality Assurance and Quality Control tasks are being performed on a number of well heads, flowlines, and degassing Stations as wells as technical office functions such as project planning, and administritive functions in order to support the client with the rehabilitation and development of the oil field.
Thinky mixing and degassing has been found valuable for high viscosities, for materials with highly different densities, or for mixing dry particles into liquids.
Flexis Air One-way coffee valves can be applied using automatic label application systems at speeds nearly twice that of injection molded heat seal-applied degassing valves.
Lances Precast offers two new designs of nitrogen/ argon delivery tubes for the removal of hydrogen gas from molten aluminum--degassing "T" and degassing "lance.