Heat Exchanger, Coil & Radiator Manufacturing calculator
Brazing Furnace Load Calculator
Use this calculator to estimate how many good brazed assemblies a furnace can deliver in a shift. It helps production managers balance fixture loading, furnace availability, leak failures, and downstream assembly demand.
What this calculator does
- Estimate good brazed core output per shift from fixture load, furnace cycles, uptime, and post-braze yield.
- Use it when a controlled atmosphere brazing furnace, vacuum brazing furnace, or batch braze oven is the constraint for radiator, charge air cooler, condenser, or evaporator production.
- Converts furnace fixture loading, available cycles, uptime, and yield into good brazed assemblies per shift.
Formula used
- Gross brazed core capacity = cores loaded per cycle × usable furnace cycles
- Good brazed core output = gross capacity × furnace uptime × post-braze yield
Inputs explained
- Cores loaded per furnace cycle: undefined
- Usable furnace cycles: undefined
- Furnace uptime: undefined
- Post-braze yield: undefined
How to use the result
- Use it for bottleneck planning, overtime decisions, fixture purchases, new product launch checks, and customer order commitments.
- It does not model alloy temperature profile, soak time, nitrogen quality, braze paste application, changeover, or rework loops.
Common questions
- What counts as a good brazed core? Use the count that passes the normal post-braze checks, such as visual inspection, leak test, dimensional check, and customer-specific braze quality criteria.
- Should warm-up and recipe change time reduce cycles? Yes. Enter only usable furnace cycles after warm-up, changeover, planned maintenance, basket handling, and known downtime are removed.
- How does this help capacity planning? It shows whether brazing can support the required cores per shift before you commit orders, add labor, buy fixtures, or release extra fin and tube work.
- When can the result be optimistic? It can be optimistic when a new alloy, flux process, header mass, or core size reduces furnace loading or lowers post-braze yield.
Last reviewed 2026-05-12.