A multi-warm forming device and the forming method are disclosed. A multi-warm forming device according to one or a plurality of exemplary embodiments of the present invention may include: a lower mold die that is disposed on a bolster for a process and in which a mold mounting portion having at least one space portion is formed at a center thereof; a lower mold that is disposed at an upper surface of a mold mounting portion of the lower mold die, in which a plurality of gas supply passages formed therein in a vertical direction are connected to a gas supply device of an outside through a gas supply line, and a lower forming surface is formed at an upper surface thereof; an upper mold that is mounted on a slider of an upper portion to be able to be moved up and down corresponding to the lower mold at an upper portion of the lower mold die, in which an upper forming surface is formed at a lower surface corresponding to the lower mold, an upper mold face surface is formed at a circumference of the upper forming surface, and a plurality of heating cartridges are mounted inside along the upper forming surface and the upper mold face surface; and a blank holder of which the mold mounting portion is inserted into a penetration hole that is formed corresponding to the mold mounting portion, is able to be moved in a vertical direction by a guide post and a cushion spring that are mounted within the lower mold die, and in which a plurality of heating cartridges are mounted along a holder face surface that restrains a material together with the upper mold face surface at an early stage of a forming process.

A titanium alloy metal sheet is provided and heated to a superplastic forming temperature. A die has a plurality of housing forming areas each corresponding to one of the medical device housing portions. The heated titanium alloy metal sheet is forced onto the die and over each one of the plurality of housing forming areas, thereby superplastically forming a workpiece comprising a plurality of integrally formed implantable medical device housing portions.

A titanium alloy metal sheet is provided and heated to a superplastic forming temperature. A die has a plurality of housing forming areas each corresponding to one of the medical device housing portions. The heated titanium alloy metal sheet is forced onto the die and over each one of the plurality of housing forming areas, thereby superplastically forming a workpiece comprising a plurality of integrally formed implantable medical device housing portions.

A radial compression mechanism includes a plurality of die, each of the plurality of die have a wedge shaped tip. The dies are arranged around a common central axis so that the wedge shaped tips form an elongated central cavity and move between an expanded position and a contracted position. Each die includes a fluid duct extending lengthwise through the die proximate the wedge-shaped tip. Each fluid duct includes an inlet fluid port and an outlet fluid port. The fluid ducts are connected in parallel by a fluid supply manifold connected to each inlet fluid port of each die by an inlet conduit, and a fluid return manifold connected to each outlet fluid port of each die by an outlet conduit.

An apparatus for forming a panel, including a first face sheet, a second face sheet and a core sheet between the first face sheet and the second face sheet, may include a molding tool defining a forming cavity shaped to correspond to the panel, a heating system positioned adjacent to the forming cavity and configured to heat the forming cavity, and a pressurization system configured to pressurize a cavity volume between the tool and the panel and pressurize a panel volume between the first face sheet and the second face sheet.

A method of controlling superplastic forming where a sheet of material is subjected to superplastic forming when in a chamber of a forming apparatus having a supersonic fluidic oscillator (SFO) includes determining maximum and minimum limits for a ratio of supply pressure applied to the SFO related to forming pressure, where the application of supply pressure to the SFO in a manner that maintains the ratio between the maximum and minimum limit causes the SFO to generate continuous, uninterrupted, gas oscillations; with a supply pressure sensor, detecting the gas pressure supplied to the SFO and transmitting it to a controller; with a forming pressure sensor, detecting the forming pressure within the chamber and transmitting it to the controller; and operating the controller to maintain the pressure supplied to the SFO to maintain the ratio of the detected supply pressure to the detected forming pressure between the maximum and minimum limits.

A method of controlling superplastic forming where a sheet of material is subjected to superplastic forming when in a chamber of a forming apparatus having a supersonic fluidic oscillator (SFO) includes determining maximum and minimum limits for a ratio of supply pressure applied to the SFO related to forming pressure, where the application of supply pressure to the SFO in a manner that maintains the ratio between the maximum and minimum limit causes the SFO to generate continuous, uninterrupted, gas oscillations; with a supply pressure sensor, detecting the gas pressure supplied to the SFO and transmitting it to a controller; with a forming pressure sensor, detecting the forming pressure within the chamber and transmitting it to the controller; and operating the controller to maintain the pressure supplied to the SFO to maintain the ratio of the detected supply pressure to the detected forming pressure between the maximum and minimum limits.

A mold for hot forming of materials in the form of a sheet is disclosed having a first half-shell bearing a die and a second half-shell, between which a chamber for forming the plate is provided. The second half-shell is provided with channels and respective holes for feeding a pressurized gas into the chamber. Inside the die there is at least one ventilated chamber, equipped with heating assemblies and ventilation assemblies for the circulation of hot air inside a ventilated chamber.