doiSerbia

New method for determining cooling time and preheating temperature in arc welding

Nejković Valentina M. (Faculty of Electronic Engineering, Niš)
Milićević Miroslav S. (High Technical School, Belgrade)
Radaković Zoran J. (Faculty of Mechanical Engineering, Belgrade)

Study and research on arc welding have provided identification of errors in formulas for calculating the cooling time t8/5 and other dependent parameters. It is concluded that large errors are present in certain intervals which had caused fail¬ures in welding technologies. Incorrect approximation of cooling temperature is replaced by a more accurate approximation used for defining of the new precise algorithm for determining relevant welding parameters.

Keywords: cooling time, temperature, welding, preheating, precise method