“The Effect of Welding of the Formability Of the Carbon Steel Sheet”

The meaning of the Forming limit diagram “FLD” is considered to be an important tool in determining the forming of sheet metal . there is yield limit curve “FLC” for each sheet that shows its formability , stress limits and yield zones. Sometimes it is necessary to join two or more sheets of different thickness end to end to obtain a single part will be formed later . as in some parts of the body of a car . in this paper , the effect of electric arc welding on the boundary diagram of the forming of the carbon steel was studied . it has been observed the welding affects the formation limit curve , where the main and minor stresses decrease for the steel sheet .