Casting method for producing blade for gas turbine

The invention provides a casting method for producing a blade of a gas turbine, the method comprising the following steps: a) producing a pattern made of wax of the blade; b) covering the pattern withan outer shell made of slurry; c) heating the pattern covered by the outer shell for separating the wax from the outer shell; d) pouring a molten metal inside the outer shell; e) removing the outer shell from the inner solidified metal, wherein between the steps c) and d) the method comprises the additional step of inserting a filler element inside the outer shell; the filler element being made of a material suitable to go in solution when in contact with the molten metal poured inside the outer shell. 本发明提供用于生产燃气涡轮的叶片的铸造方法，该方法包括以下步骤：a)生产由蜡制成的叶片的模型；b)以由浆泥制成的外壳覆盖模型；c)对被外壳覆盖的模型进行加热，以便使蜡与外壳分离；d)将熔融金属倾注于外壳的内侧；e)将外壳从内部凝固金属去除。其中，在步骤c)和d)之间，方法包括将填料元件插入外壳的内侧的附加步骤；填料元件由适合于在与倾注于外壳的内侧的熔融金属接触时溶解的材料制成。