In aspect of theoretical stud y, the model of high-pressure welding arcs is established, and the governing equation of high-pressure welding arcs and computing equation of voltage drop of arcs are given.

• 在焊接电弧理论研究方面，建立了高压焊接电弧模型并提出了高压下焊接电弧的控制方程以及电弧电压的计算方程。