Percussion welding

Percussion welding is one type of resistance welding method. In this welding process where a united body is made over the entire area of butt positioned work surfaces by heating is obtained from an arc produced by a rapid discharge of electrical energy and the pressure is applied same time of electrical discharge.

Principle of percussion welding:

The following steps are involved in percussion welding process—
The wok-pieces should be cleaned from dirt, grease, paint etc. foreign particles.
The wok-pieces are clamped rigidly in the machine table.
Which face to be weld, that brought together face to face and light forces applied.
The work-piece brought to touch in slightly and established a flow of current. Then electrical arc is produced in the interface of the work-piece.
At this time light force is applied each other as shown in the picture with arrow sign. After a certain time the switch of the current and hold the job till cool down.
Applied force is released from both end.
Work-pieces are unclamped.
Now work-piece made united.

Principle diagram of Percussion Welding

Application of percussion:

This process contributes itself to a variety of commercial applications, such as butt welding steel or other metals with out flash. Joining the aluminium rods, bars or tubes to copper, steels or non ferrous alloys to corrosion resistance alloys, silver contact finger to copper studs, threaded steel studs to aluminium and satellite tips to steel or non-ferrous shanks.

Percussion Welding

Percussion Weld Principle