Patent ID: 6571450
Filing Date: 2003-06-03
Classification: B21D,B23K,Y10T

Abstract:
A process for the monolithic molding of superplastic material comprising:providing at least three metal plates capable of superplastic molding and diffusion bonding, applying an anti-bonding agent onto regions of the plates to define bonding regions and non-bonding regions on the plates, bonding regions and non-bonding regions provided between the plates, superposing the metal plates one on another to form superposed plates, setting the superposed plates in a molding die, and heating the molding die interior to a molding temperature to diffusively bond superposed portions of the superposed plates to each other, the superposed portions corresponding to the bonding regions, and superplastically molding the metal plates by introducing a gas into the non-bonding regions to apply pressure to the regions; wherein auxiliary plates for molding are placed on top and bottom sides of the superposed plates, respectively, the superposed plates and the auxiliary plates are set in the molding die, and a pressure lower than pressure applied to the non-bonding regions is applied to spaces between the inner wall of the molding die and the auxiliary plates to control movement of the top and bottom plates whereby the superplastic molding is performed.