Weld Travel Speed for a Target Heat Input
Travel speed TS = (60 V I eta)/(1000 HI) to hold a target heat input.
Example
You enter
- Arc voltage (V) 24
- Welding current (A) 200
- Arc efficiency (0.8 GMAW, 0.65 GTAW, 0.9 SAW) 0.8
- Target heat input (kJ/in) 40
You get
- Travel speed (at or above) 5.76 in/min
Details, formula, and sources
Travel at or above it to stay at or under the limit. GMAW 24 V, 200 A, eta 0.8, 40 kJ/in -> 5.76 in/min; a 25 kJ/in ceiling forces 9.22 in/min. The qualified WPS governs.
TS = (60 x V x I x eta) / (1000 x HI); check HI = (60 V I eta)/(1000 TS).
The AWS/ASME arc heat-input relation solved for travel speed, by name.
The heat-input relation HI = (60 V I eta)/(1000 x travel speed) is a standard AWS/ASME formula. The qualified WPS governs the allowable range.
Estimate. AHJ and licensed professional govern.
Field names used by the API: V_volts, I_amps, eta, HI_kjin, travel_speed_ipm
- Heat-input relation TS = (60 V I eta)/(1000 HI); eta ~0.8 GMAW, 0.65 GTAW, 0.9 SAWAWS / ASME
- Slower is hotter at fixed V and I, lower travel speed raises the heat input (inverse relation)arc physics
- Match WPS eta match the WPS's efficiency convention; no bead-geometry or fusion modelscope of this tile