采用显式动力学有限元方法，对立辊孔型内倒角半径R为30、50、80、110 mm 4种情况下多道次立－平轧制过程进行了模拟。分析了立辊孔型内倒角半径对轧件切头尾量、轧件稳定段轧件边部变形程度的影响。研究发现：既定条件下，第1道次立－平轧制过程中，随内倒角半径的减小头尾不均匀区域长度减少，第2、3道次立－平轧制过程中，随内倒角半径的增加，头尾不均匀变形区域长度道次增加量减少；对比采用R为30 mm的孔型立辊和R为110 mm的孔型立辊轧后轧件的头尾不均匀长度，前者比后者少5.03％；轧件稳定段轧件变形程度随着孔型立辊内倒角半径的增加而减少。
The VH(verticalhorizontal) rolling process with groove fillet radii of vertical roll R of 30, 50, 80, 110 mm was simulated by explicit dynamic FEM. The influence of groove fillet radii of vertical rolls on cropping and margin deformation of slab were analyzed. The results show: during the first VH rolling pass, the nonuniform region length of slab head and tail is decreased as fillet radius reduced; during the second and third passes, pass increment of nonuniform region length of slab is decreased as fillet radius increased; comparing of the nonuniform region length with Vroll R 30 mm and Vroll R 110 mm, the former is 5.03% less than the later; the deformation degree of stable segment is reduced as fillet radius increased.
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