Laminated turbine rotor blade - has flat blank plates of different thicknesses welded together, machined and bent to shape

摘要

The turbine rotor blades are made by machining a flat blade blank. The machined blade is finally bent into required shape. Rolled plate is used as the raw material. The flat blank (4) is made by welding thin plates (1,-2, 3) of different thicknesses. The blank is subsequently machined to approximate shape and then placed between two die blocks (8, 9) for bending the blade into the required profile.