Welding & Fabrication calculator
Weld Travel Speed Calculator
Find the required arc travel speed for your hourly weld-length target. Enter observed arc and work time, pass length and the procedure speed limit.
What this calculator does
- Find the arc travel speed needed to reach your weld-length target at the observed operator factor.
Formula used
- Operator factor = observed arc-on time ÷ observed work time
- Required speed = target inches/hour ÷ (60 × operator factor)
- Arc throughput = required speed × 60
- Arc seconds per pass = pass length ÷ speed × 60
- Speed headroom = procedure limit − required speed
Inputs explained
- Target Weld Throughput: Required planned pass length per working hour from the production plan.
- Weld Pass Length: One uninterrupted pass length from the joint drawing.
- Observed Arc-On Time: Arc-on time logged during the observation interval.
- Observed Work Time: Matching working interval including preparation and handling.
- Procedure Speed Limit: Maximum qualified travel speed for this joint and procedure.
How to use the result
- Best suited to weld cell throughput Planning, pass timing comparison.
- Operator factor is a production observation, separate from equipment thermal duty. The required speed does not establish fusion or procedure qualification.
Current U.S. benchmarks
- The producer price index for steel mill products stands at 381.162 (BLS, Aug 2026), up 23.4% from a year earlier. Quotes priced off last quarter's material cost miss this move.
- Industrial electricity averages 9.77 cents per kWh across the U.S. (EIA, Jul 2026), up 4.7% from a year earlier. Energy-intensive steps carry this directly into unit cost.
- U.S. iron and steel import customs value ran $2.2B in Aug 2026 (Census International Trade). The U.S. ran a trade deficit of $0.6B in the category that month. This dollar total mixes price, quantity, product mix, origin, and timing; it does not measure physical import volume or prove a tariff or reshoring effect.
- The U.S. has 53,790 fabricated metal products establishments employing about 1,441,471 workers (Census County Business Patterns, 2023).
Common questions
- Does operator factor mean equipment duty cycle? No. Operator factor measures arc-on time within working time. Equipment duty cycle is a thermal rating tied to welding output and a specified reference interval.
- What length belongs in the hourly target? Use the total weld length on the same pass basis as your speed. If a joint needs several passes, count each pass when building the production target.
- Why enter a pass length? Pass length converts the required speed into arc seconds per pass. Compare that time with measured start, stop and handling intervals when checking the cycle.
- What if the calculated speed exceeds my procedure? Improve the measured operator factor, add capacity or reduce the throughput target. Do not increase speed beyond the applicable qualified procedure solely to meet this estimate.
Related guides
Last reviewed 2026-10-06.