Water-cooled copper feedthroughs carry low voltage, high current from the power leads outside the furnace to the heating element inside the furnace. The frame has provision for attaching the chamber to its side, the hydraulic ram cylinder to its top cross beam, and a stationary load transfer shaft to its bottom cross beam. Included is a hydraulic cylinder providing the basic pressing force with specified travel which is secured to the top cross beam. A water-cooled stainless steel extension shaft attaches to the upper cylinder and passes into the chamber through a sliding vacuum seal. A water-cooled stainless steel shaft is secured to a plate on the bottom cross beam and passes into the chamber through a vacuum seal.
Hot ejection is critical for certain materials which expand on cooling and can seize in the die.
To avoid seizing, Elatec offers a Hot Ejection option. This system will provide an ultimate pressure of 10-2 torr in approximately 15 minutes when the chamber is clean, dry, empty, outgassed and room temperature condition. Included is an inlet distribution manifold with an inlet pressure gauge, anlet and outlet temperature gauge, and separately valved circuits for chamber, power feedthrough and pumping system. Inlet and Outlet alarmed pressure and flow switches warn of low water pressure. An outlet temperature gauge is also provided.