FIELD: metal forming.
SUBSTANCE: invention relates to metal forming and may be used in making fan blades with metal straps. Blade front edge hardening strap is made from two initial sheet blanks. Thickness of blanks is set taking into account maximum thickness of strap in untwisted state and machining allowance. Single sheet blank with inner cavity is produced from blanks by diffusion isothermal welding in a die. One performs hot bending of a single sheet blank with simultaneous profile twisting and air-gas forming in a die with formation of a final profile of inner and outer surfaces.
EFFECT: higher quality of an obtained metal strap for a blade.
1 cl, 11 dwg, 1 ex
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