In order to solve the problem of thermal deformation in high-quality blade forging

a high temperature constitutive equation for a 43" turbine blade material was established by thermal simulation experiments and data regression. Using the established equation

the forging process was analyzed by orthogonal test and numerical simulation software DEFOEM-3D. The calculation results show that the elevated temperature flow stress of the material accords with hyperbolic sine function. The analysis results show that the effects of the boss diameter

the fillet near blade root

the distance between the center line of blank and mold

and the fillet near blade shroud on the forging quality is successively from large to small. The practical production shows that the forging process using the optimized parameters can not only lower the load

hold the tolerance within 3 mm

and reduce forging times

but also save material and increase the economic efficiency of the enterprise. This study may benefit the nationalization of the blade materials and die forgings.