Super Systems CarbCALC II - Manual (Page 38)

CarbCalcII CarbCalc II 37
© 2005,2006,2007 Super Systems Inc.
2.12 Simulation Mode
2.12.1 Typical Uses
The Simulation mode provides a method for developing Carb Cycle recipes for Batch Furnaces.
Typical uses include:
· ·Developing recipes for new product.
· ·Developing re-work recipes.
· ·Modifying existing recipes to potentially shorten furnace time.
In the Simulation mode, model inputs are always Temperature, %Carbon, Probe Factor and %CH4.
The Simulation Mode features various methods to model the End of Segment.
· Timed segments
· Match Surface Carbon
· Match Carbon at a specified depth
· Auto Boost
· Auto Diffuse
Typical Steps in developing a Boost-Diffuse Carburizing Recipe
1. Select the Furnace
2. Select the Material
3. Generate a Target Profile (Use recommended profile and modify as desired)
4. Generate recipe segments
· Usually 4 segments will be adequate (Come2Heat, Boost, Diffuse, Equalize)
· Come2Heat - Soak for specified time
· Boost - Use "AutoBoost" to end segment. %Carb should be just less than saturation for the
given temperature.
· Diffuse - Use "AutoDiff" to end segment. %Carb should be at or slightly above the Target
Profile Surface Carbon.
· Equalize/Cool - Timed Soak
5. Run Simulation and evaluate results.
6. Modify model (steps 2,3 and 4 above) and repeat simulation.
7. When satisfied with simulation results, make a product test run,
8. Compare test run lab results with simulation results (may use "Lab Profile" to aid in comparison).
9. May be necessary to adjust the "Furnace Factor" to correct for differences in Lab Profile and
Simulation Profile.
Note 1: When developing a "re-work" recipe, you will need to modify the "Initial Profile", all other
steps remain the same.
Note 2: When modifying an existing recipe, replace the 4 segment cysle in step 4 with your existing
recipe.
2.12.2 Report
In the simulation mode, clicking on the print icon will print the following report. The report is a
snapshot of the current model status and can be printed at any time during the simulation.