Preparation method of high-precision wing-shaped thin-wall special-shaped part for gas turbine

The invention belongs to the technical field of irregular part manufacturing, and particularly relates to a preparation method for a high-precision wing-shaped thin-wall special-shaped part of a gas turbine. According to the technical scheme, the preparation method of the high-precision fin-shaped thin-wall special-shaped part for the gas turbine comprises the following steps that S1, the unfolding size after a hollow rectangular pipe of a rectangular fin-shaped part is divided into two parts is calculated according to the size of the hollow rectangular pipe, and two rectangular plates are obtained through blanking according to the unfolding size of the two parts; s2, the rectangular plate is subjected to edge folding, and a semi-rectangular pipe is obtained; s3, the boundary dimension of the semi-rectangular pipe is machined to a calculated value; s4, the two semi-rectangular pipes are spliced and fixed, a gap between the two semi-rectangular pipes is subjected to tailor welding, and a hollow rectangular pip