| Recent progress at home and abroad about the computer aided roll pass design is summarized in this paper. According to the characters in roll pass design and the function of computer,a variety of mathematic models that can be sued in CARD system have been discussed,and the establishment of optimization methods of the CARD has been systematically investigated. The concept of the software engineering is introduced into CARD in this paper. According to structured design,a Windows platform CARD system for flat bulb has been developed by VB language. Viewing energy minimum as the object function,and adopting dynamic programming,this system can get the plan which costs the least rolling energy,under the condition satisfying the bite condition,rolling machine strength and electric machine check etc. Then the optimum plan can be drawn into graphs automatically with dimension,and the final plan can be output into AutoCAD2000 which is the most popular in engineering drawing software. Furthermore,using database technology,this system can easily achieve the plan's editions control. The designer's experience can be introduced into the designing course and the designing result can be modified at any time,because of the graphical user interface. This software has high general-purpose nature,and can be run in any Windows operating system. The design is reliable,highly precise,and convenient with obvious energy and material saving. It provides a scientific method in the pass design of steel section.
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