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...
I'm going to use joint B-U4a(SMAW)as per AWS D1.1-2004.
The material specification are as follows;
ASTM A252 Gr.3, thickness: 12.5mm
Single-bevel-groove weld, ? = 45°, R = +1/16, –0
with backing.
In this case, Whether Welding Qualification Test is required or not?
