Prediction method for die steel forging process isotropy

The invention discloses a prediction method for die steel forging process isotropy. The width direction of a forge piece is defined as an x direction, the thickness direction of the forge piece is defined as a y direction, and the length direction of the forge piece is defined as a z direction. The method is characterized in comprising the following steps that: S1: carrying out finite element analysis on the forge piece in a forging process to obtain the stresses [Sigma]ix, [Sigma]iy and [Sigma]iz and strains [Epsilon]ix, [Epsilon]iy and [Epsilon]iz in the x, y and z directions of the forge piece; S2: solving unit accumulated deformation work Wxm=[Sigma](i=1,n)[Epsilon]ix. [Sigma]ix[Delta]Vi), Wym=[Sigma](i=1,n) [Epsilon]iy. [Sigma]iy[Delta]Vi) and Wzm=[Sigma](i=1,n) [Epsilon]iz. [Sigma]iz[Delta]Vi)in the x, y and z directions of the forge piece in the forging process; S3: solving the deformation work sum Wx=[Sigma](m=1,sp)Wxm, Wy=[Sigma](m=1,sp)Wyxm and Wz=[Sigma](m=1,sp)Wzm in the x,y and z directions of th