Expression of Diffusible Hydrogen Escape Velocity for 590 MPa Grade High Strength Electrode
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摘要: 利用水银法与热提取法试验测定了590 MPa级高强度焊条在不同温度下的扩散氢逸出速率,建立了与温度相关的扩散氢逸出速率表达式,并验证了该表达式的有效性。结果表明,该表达式可以较为准确地计算出焊缝金属冷却过程中的瞬态扩散氢浓度。Abstract: Mercury and hot extraction method are utilized to measure diffusible hydrogen escape velocity of 590 MPa grade high strength electrode at different temperatures,the expression of diffusible hydrogen escape velocity is established related to the temperature,the validity of this expression is also examined.As a result,this expression can be applied to calculate transient diffusible hydrogen content in weld metal precisely.
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