Abstract: A method includes creating, in a foundry, a preform to the desired shape and size, in transferring this preform from the foundry to a tunnel oven, then preheating it to a temperature of around 500° C., transferring the preheated foundry preform into a die forge with a substantially smaller size and shape, and performing the die punching operation at a pressure of between 600 and 700 MPA, before the transfer of the preheated foundry preform to the forge die, the forge die and pins for positioning the preform are put through a powder-spraying operation on the entire inner surface of the forge die which is liable to receive the preheated foundry preform and the pins.

Abstract: The present disclosure is directed towards a method of creating, in a foundry, a preform to the desired shape and size, in transferring this preform from the foundry to a tunnel oven, then preheating it to a temperature of around 500° C., transferring the preheated foundry preform into a die forge with a substantially smaller size and shape, and performing the die punching operation at a pressure of between 600 and 700 MPA, before the transfer of the preheated foundry preform to the forge die, the forge die and the means of positioning the preform, consisting of pins, are put through a powder-spraying operation on the entire inner surface of the forge die which is liable to receive the preheated foundry preform and the pins.

Abstract: This method is original in that it implements the following phases: a foundry preform is created that includes one or more pierced or blind recesses or cavities that match the useful or required shapes of the end part to be obtained; the preform is transferred to a tunnel furnace that ensures a uniform temperature of said preform; the foundry preform is positioned in a heading die disposed on a press; one or more multidirectional rods are introduced into the recess(es) or cavity(ies) of the foundry preform, according to a command prior to the forging operation; sizing operation of the preform that receives the rod(s) in the phase during which the rod(s) are temporarily positioned inside the shaped recess(es), the upper forging die is raised to free the forged preform; the rod (s) positioned in the recess (es) are withdrawn; and the forged preform is removed.

Abstract: This method is original in that it implements the following phases:

Abstract: The invention concerns a method for making alloy components characterised in that after casting the preform (2) and before transferring it into a forging matrix (5), said preform, still hot at the end of casting, is transferred and completely immersed in a vessel (3) for graphitization coating, then, on coming out of the vessel, the preform temperature enabling the water to be evaporated so that the preform is homogeneously coated with graphite.