Calculation of Heat Input

[poseidon2]

If Welding Parameter are as follows;
Amperage Voltage Travel Speed(mm/sec)
80~100 22~30 0.78


In order to calculate the heat input, what values are to be taken ?

1) max ampere(100), max voltage(30) and T/speed (0.78)
2) min ampere (80), min voltage (22) and T/speed (0.78)
3) ave. ampere (90), ave. Voltage (26) and T/speed (0.78)
4) others

 

[stanweld]

The maximum heat input is the maximum recorded during proceure qualification. If you actually recorded 100 Amps at 30 Volts at .78 mm/min, that will be your maximum in the example given.