| 摘要 |
<p>Method of consolidation of a metal powder body to a completely dense body, in which a plate capsule (1c, 1d) consisting of a cylindrical wall and in one end thereof an end plate (2c, 2d) is charged with said powder so that the powder (3c, 3d) completely or essentially completely will fill the capsule, whereafter the air optionally is evacuated from the capsule and optionally replaced with a non-oxidizing protective gas, said capsule thereafter being closed also in the opposite end by an end plate, whereafter the capsule with its content is heated to a forging temperature suitable for the metal powder and is forged so that the powder is consolidated to a completely dense body. According to the invention the end plates (2c, 2d) are substantially prevented from bulging during the forging and thereby losing contact with the powder (3c, 3d) before the powder has been compacted to at least near complete density through stiffening of the central portions (6c) of the end plates (2c, 2d) by one or more stiffening members (7d), said stiffening member or members being welded to the inside of said respective end plate along a substantial length in order to stiffen said end plate, said stiffening member projecting into the powder body to an essential depth in order also to work as anchoring means for the end plate in the powder body.</p> |
