| 摘要 |
Unitary workpieces are produced from at least two components, one of which is a body made from smelt-metallurgical material and the other is a member made from powder-metallurgical material interconnected in a hole-and-plug arrangement. The components are located in respective die halves of a forging press and are forged into a desired shape under such conditions of heat and pressure so as to upset the material of each of the components at least along the juncture of their interconnection to simultaneously form a welded bond therebetween. |
