What is the force component of a weld schedule?


In the case of aluminum welds it can close small voids which frequently form in the nugget during solidification. The hold sequence of a weld schedule provides the time to solidify the weld and forge the part.  The forging leads to greater weld nugget strength.

Weld schedules express force in Lb Force or Kg force and this value of force should be reached before the actual weld current is initiated to prevent expulsion. The squeeze sequence of a weld schedule to designed to provide for this force build up.

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