Heat Treatment, Furnaces & Thermal Processing calculator

Carburizing Cycle Time Calculator

Total the approved carburizing stages and station handling for consecutive loads. Enter logged or specified durations for the actual boost and diffuse program.

What this calculator does

  • Schedule consecutive carburizing loads using the approved boost, diffuse and handling durations.

Formula used

  • Cycle hours per load = heat-up + boost + diffuse + quench and handling
  • Scheduled hours = planned loads × cycle hours per load
  • Case-stage hours = loads × (boost + diffuse)
  • Ancillary hours = loads × (heat-up + quench and handling)
  • Window margin = available station hours − scheduled hours

Inputs explained

  • Planned Loads: Whole charges assigned to this carburizing station.
  • Heat-Up Time per Load: Logged heating and equalization time for this recipe.
  • Boost Time per Load: Sum of approved carbon boost segments per load.
  • Diffuse Time per Load: Sum of approved diffusion segments per load.
  • Quench and Handling per Load: Non-overlapping transfer, quench, loading and reset occupancy.
  • Available Station Window: Scheduled station hours for these consecutive loads.

How to use the result

  • Best suited to boost and diffuse schedule reviews, carburizing station booking.
  • Does not predict carbon diffusion, hardness or case depth. Tempering and queues outside the entered station are excluded.

Current U.S. benchmarks

  • 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.

Common questions

  • Does this select the carburizing time? No. Use an approved program for the required material and case depth. This calculator totals its occupied stages.
  • How do I enter repeated boost segments? Add the boost durations together, then enter the separate total of the diffuse segments.
  • Is tempering included? No. Schedule tempering separately. This total ends after the entered quench and handling stages.
  • Can the program predict final case depth? No. The time totals contain no diffusion model or material response data. Confirm case depth through the qualified process and inspection plan.

Last reviewed 2026-10-06.