METHOD OF MAKING STATOR STAGES FOR COMPRESSORS AND TURBINES,AND STATOR VANES AND VANE ARRAYS PRODUCED THEREBY

摘要

According to the invention, rows of stator blades are produced from a machined straight bar B from which blade blanks (A) are cut out by wire electrode spark erosion, then the upper curved surfaces (18) and lower curved surfaces (17) are machined by spark erosion or by chemical machining and the feet of the blades are butt-welded in order to form a row sector or a complete row. …Application especially to the compressor stators of turbo- machinery, to blades comprising a profile of changing cross-section. ……