Simulation Guide: Hardening Furnace, page 2
You have seen the furnace controls of temperature and belt speed, and probably left them at the default settings. Click on Test Run Graph (Figure 4). Note the display of current furnace settings. You must do a test run before beginning any production runs.
Figure 4. The furnace submenu with test run graph option

Click on the Do Test Run button (Figure 5). This will simulate sending a probe in a special blade blank through the tunnel to sense the temperature of the blank as it moves along the tunnel. Notice the graph is above 1850° for about 25 minutes at the default belt speed, 3.5 in/min.

Click the back arrow to leave the test run graph. Click on Test Run Stats to display the soaking time, temperature and projected hardness. For example 11.55 min. at 1930°F, will give a potential hardness of 63 Rockwell scale. The soaking temperature and time are determined as the highest temperature that gives a minimum soak. Soaking time beyond the minimum will not affect hardness. There is more information on the heat treating pages.
Click on Test Run Stats in the furnace submenu to bring up the Test Run window holding the current time and temperature settings.
Click on the gray back arrow to return to the submenu.
This is the end of the hardening furnace part of the user's guide. Go to the tempering ovens page next.
Figure 6. Test run data
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