Study on optimal machining of turbine blades

This paper, aiming to decrease the amount of the transformation caused by the machining of the turbine blades material made of shape forging, investigates the optimal machining method for them. Accordingly, through merely the experiment that used the rectangular test pieces made of the rolled steel with the same chemical composition as the actual blades had been performed, we obtained the findings that the transformation of the material by the milling is convex in the direction of rolling, and is concave in the perpendicular direction to it. Moreover, it turned out clear that the amount of the transformation and its increase are almost in proportion to the frequency of cutting.