orifice gas
orifice gas
[′ȯr·ə·fəs ′gas] (metallurgy)
The torch gas in a plasma arc welding or cutting process which becomes ionized in the arc to form plasma and is ejected from the orifice in a jet stream.
References in periodicals archive
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The critical orifice gas velocity or flow rate (at which the regime transition from period-1 to period-2 bubbling and from period-2 to chaotic bubbling takes place) decreased with increase in the diameter of the orifice.
Desmond McDonald, president of FMC Energy System's Smith Meter unit said: "The addition of PECO's orifice gas measurement product line enhances our growing participation in the gas measurement market.
Some of the more challenging projects we have supplied include natural gas systems for uninterrupted high accuracy orifice gas metering with dual runs and back-up flow computers; control of unusually high flow rates and pressures; and precise gas metering accuracy under extreme conditions.
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