3D geometry design of steel casting riser processes based on OpenCascade was carried out. Meanwhile

different riser design systems were selected according to modulus calculation of steel castings and different riser types

realizing rapid design for steel casting riser system. Firstly

the 3D model of steel casting was read and the whole modulus was calculated. Then

different interception types were set and the profile as well as the locationare were determined through the parameterized design of the system

thus obtaining the local modulus of the casting interception. Next

the 3D model of the riser was automatically established by combining the local modulus and the selected riser type. Finally

taking actual steel castings as an example

the feasibility of the riser design system was verified. The results indicate that the riser design system can improve riser design efficiency

shortening the design period.