Based on analysis of all kinds of methods that calculatal the spread of bar steel rolling,it came to the conclusion that any of them can not satisfy the needs of CAD/CAE software system.

• 在分析了前人计算型材轧制宽展变形的各种方法之后，得出结论：现有的各种宽展模型不能满足CAD／CAE软件系统的需要。