Press Ceramics: Setting Variables Per Cycle
F 1 | T1 | Start Temperature: it is the temperature from which a press-injection cycle starts. When you start the programme the oven raises its inner Temperature up to the T1. When such temperature is reached the oven will give a sound signal to indicate that it is ready for the cylinder. The user must open manually the oven, place the cylinder, close again the oven with the arrows and the cycle will continue |
F 2 | t 2 | Injection temperature: it is the Temperature the oven will reach to obtain the softening of the “rough” and proceed with the injection |
F 3 | Vs | Slawe rate expressed in C°/min: it indicates the increase of temperature the oven uses during the heating from T1 to T2 |
F 4 | tm | Holding Time: it indicates the time the oven keeps the temperature T2 before the injection. This time varies from 10 to 20 minutes depending on the type of ceramic and the selected T2 temperature |
F 5 | tl | Injection time: it indicates the time, after the injection, that the oven will keep the pressure on the ceramic in order to obtain the completion of the pressure firing. This time is of about few minutes (normally about 5 minutes) |
F 6 | tp | Post-injection time: it indicates the time the oven will maintain the temperature T2 after having released the pressure. This function is not used for many types of ceramics, if this is the case set the value F6 = 0 |
F 7 | Vacuum | YES (It is impossible to set cycles without vacuum) |
F 8 | tv | Starting vacuum Temperature: it indicates the temperature the pump goes On. The vacuum stops at the end of phase F4, that is when the pressure is released unless a different value from 0 is set for the variable F10 |
F 9 | Vacuum Level | A vacuum level in percentage to the absolute level can be set. It is suggested to set the value at 95% |
F 10 | Tpv | Post-injection vacuum time: if a different value from 0 has been set at the variable F6, the vacuum can be kept during this time. For most ceramics this value must be 0 |
F 11 | Tr | Guided cooling up to: it indicates the temperature the oven will reach during the cooling with a closed muffle |
F 12 | Vd | Drop speed: during the cooling set in variable F11 also set the cooling drop in °C/min |
F 13 | ta | Muffle opening time: the muffle will slowly open in steps according to the time set in this function |
F 14 | Tf | Final Temperature: it indicates the temperature the oven will remain once completed the cycle. This temperature is set according to the following cycle |