利用面向对象方法来建立系统模型、开发计算机过程控制软件具有重要意义。特别是在老企业的技术改造中 ,这一点表现得尤为突出。鞍山钢铁公司下属的灵山线材厂就是一例。该线材厂共有 3条轧制生产线 ,每条生产线分别有推入钢坯、加热、再推钢、分钢、粗轧、预精轧、精轧、冷却 The use of object-oriented method to establish the system model, the development of computer process control software is of great significance. This is particularly evident in the technological transformation of older enterprises. Anshan Iron and Steel Company Lingshan wire plant is an example. The wire plant a total of three rolling production lines, each production line were pushed into the billet, heating, and then push steel, steel, roughing, pre-finishing, finishing, cooling