水下湿法焊接等离子成分计算

水下湿法焊接所产生的电弧是在带电离子气体的气泡中形成的,结合前人对水下湿法焊接气泡成分的测定,分析了水下湿法焊接气泡中气体的主要解离和电离过程,对局部热力学平衡态下的不同水压、不同温度的水下电弧成分采用potapov模型进行了计算,其主要理论依据为Dalton分压定律、质量作用定律、电荷准中性条件和化学计量平衡条件.结果表明,随着水压由0.101 3 MPa变化到1.013 MPa再到10.13 MPa,离子体内H+,O,C,O+,C+的数密度呈现逐渐增加的趋势,同时电子数密度和离子体密度也跟随增加.而离子体总体平均电离度不受水压的影响.为进一步计算水下湿法焊接电弧的输运系数和水下电弧的仿真打下了基础.

Plasma component calculation in underwater wet welding

The electric arc is formed in the ionized gas bubble in the underwater wet welding.Combined with the previous bubbles components determination,the main ionization and dissociation process in the bubble are analyzed.The calculation based on the potapov model was done for the underwater arc components at different water pressures and temperatures under the local thermodynamics equilibrium state.Its main theorical bases are the Dalton law of partial pressure, the law of mass action,the electric charge quasi-ne...