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Reading the spec sheet
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Enter voltage, current, travel speed, and welding process to calculate true heat input with the source engine’s efficiency factor.
Multiply voltage by amperage by 60 and the process efficiency, then divide by travel speed and 1,000 when the speed is in inches per minute.
Gross arc energy is 30 kJ/in. Applying the GMAW efficiency factor of 0.8 gives 24 kJ/in.
Not all arc energy reaches the workpiece. The source engine applies 0.8 for GMAW, SMAW, and FCAW; 0.6 for GTAW; and 1.0 for SAW.
Divide kJ/in by 25.4. Conversely, multiply kJ/mm by 25.4 to get kJ/in.
Nine welding calculators built for the booth. Electrode picker, SMAW amperage, TIG setup, heat input, gas flow, multi-pass planning, fillet weld strength, filler cost. Free on the App Store and Google Play.
