The heating, cooling duration of gold or silver inside the furnace and temperature of furnace is crucial. Thus perfect control is needed for the system.
The furnace is heated and cooled in 6 steps.
1- First set temperature is freely reached.
2- The furnace temperature is holded for determinated period. If the furnace pressure is on the desired level at the end of the period, system moves to the third step. If not system doesn’t move on to the third step.
3- Adjusted temperature increases by the temperature/time ratio.
4- Temperature is holded still for the determinated period.
5- Furnace is cooled to the fixed temperature by the temperature/time ratio.
6- Furnace is cooled to the determinated temperature freely and the loop is finished.