| 摘要 |
A method of manufacturing a fan blade (10) comprises forming three metal workpieces (30,32,34). Each metal workpiece (30,32, 34) has a flat surface (38,42,46,48) and is larger than a predetermined size (X) to form excess portions (62,64,66). The predetermined size (X) is required to produce the finished fan blade (10). The excess portions (62,64,66) are located outside the finished fan blade (10). Longitudinally extending slots (68) are formed to interconnect the flat surfaces (46,48) of the excess portions (66). The metal workpieces (30,32,34) are assembled into a stack (36) so that the flat surfaces (38,42,46,48) are in mating abutment. The stack (36) is evacuated from one longitudinal end of the stack (36) such that the slots (68) enable gases at an opposite end of the stack (36) to be removed from the stack (36). Heat and pressure is applied across the thickness of the metal workpieces (30,32,34) to diffusion bond the metal workpieces (30,32,34) together to form an integral structure. The integral structure is cut to remove the excess portions (62,64,66) of the metal workpieces (30,32,34) and the slots (68).
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