To increase top forgingpressure during applying welding.
增加施焊时的顶锻压力。
2
Spot welding requires both an electric current and a forgingpressure to produce the weld.
点焊需要电流及锻压来产生焊缝。
3
In order to reduce the equipment size, sometimes the large-scale forging pump press commonly used high intensity of pressure (about 35 megabars), also uses 100 megabars above ultrahigh voltage.