Effect of flux on surface tension of liquid metal in welding pool
A dynamic measurement system of molten pool liquid metal surface tension was established based on the principle of weld pool oscillation.The effect of three typical oxide fluxes on the surface tension of the molten pool under the action of the TIG arc heat source was investigated.It was found that the introduction of oxides does not have a significant effect on overall arc temperature.However,it would cause the average surface tension temperature gradient of liquid metal in molten pool to change from negative to positive,and the surface tension temperature gradient of molten pool is related to the melting point of the oxide.The lower the oxide melting point,the larger the surface tension temperature gradient of the weld pool.
weldsurface tension of molten poolweld pool temperatureweld pool oscillation frequencyoverall arc temperatureflux
万方数据
维普
