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本发明提供一种测定溶解在熔体金属中气体浓度装置的新型浸没式探头。该装置通过探头使载体惰性气体与熔体金属产生交换接触,并使溶解的气体达到平衡混合,那么混合物中溶解气体的浓度即代表熔体金属中气体的浓度。该探头由一整体的在熔体温度中有足够强度和充分孔隙度的多孔透气材料构成,孔隙大小和透气性必须保证气体在合理的时间内扩散。探头本体很薄,使气体扩散进入通路最短,并使载体气体的进气口和出气口相隔适当的间距,以保证气体向整个本体扩散。如果在静态熔体金属中使用,可以振动探头或搅动熔体金属,保证探头和金属良好接触,减少气体平衡所需的时间。
The present invention provides a novel immersion probe for measuring the concentration of gas dissolved in a molten metal. The device makes the inert gas of the carrier exchange contact with the molten metal through the probe, and the dissolved gas reaches the equilibrium mixture, then the dissolved gas concentration in the mixture represents the concentration of gas in the molten metal. The probe consists of an integral, porous, breathable material of sufficient strength and porosity in the melt temperature. The pore size and breathability must ensure that the gas will diffuse in a reasonable amount of time. The probe body is very thin, so that the gas diffusion into the shortest path, and the carrier gas inlet and outlet at an appropriate spacing to ensure that the gas diffusion to the entire body. If used in static melt metal, vibrate the probe or agitate the molten metal to ensure good probe contact with the metal, reducing the time required for gas balance.