5. Open the burnout door, grab the flask firmly with the tongs and place it in the casting machine’s flask saddle. Make sure that the flask is transferred quickly from the burnout oven to the casting machine, so it does not cool off until it is casted.
Figure 17: Taking the flask from the hot oven.
6. Close the lid of the chamber and evacuate the air by initiating the vacuum cycle, then backfill the chamber with Argon. This is called washing cycle for the purposes of our machine. They are compulsory for the Titanium casting. Minimum number suggested is 3 washing cycles, but the machine accepts up to 9. For the purpose of this casting we have used 4 cycles.
7. After completing the number of washing cycles, start the Melting process. Observe the melting process through the visor. When you see the metal melted completely except for the last part of the top (≈98% of the ingot), push the “Cast” button.
Figure 18: Observing the melting of Titanium
8. When the Cast button is pressed, the arm will start to rotate and it will inject the Titanium into the flask.
Figure 19: View of crucible and flask just after ejection of the material.
9. After the casting cycle is completed, take the flask immediately out of the machine and Drop immediately the flask into a large amount of fresh water to stop the Alpha Case production.
Figure 20: Taking the hot flask from the machine