The paper introduces the working principle of the water seal system in the giant extruder of copper shape, discusses how to select the optimum clearance and how to design the control circuit of the hydraulic pulling equipment.

• 介绍了大型铜材挤压机水封系统工作原理,探讨了水封装置最佳间隙的选择和液压牵引装置的控制回路设计。