Abstract:

To calculate the process energy consumption of sand casting, a model for energy consumption was built based on Petri net.The process of sand casting energy consumption was huge,and had a large potential for energy saving. A process activity model was proposed with analyzing the characteristics of energy consumption. The relationship between process activity and resource consumption was described by graphical description based on Petri net. The consumption model of sand casting process activity was realized. The proposed method was verified through the sand molding workshop.

Key words: process activity, process energy consumption, sand casting, Petri net

摘要：

为了实现对砂型铸造工序活动能量消耗的描述和计算，在活动成本法思想基础上，提出了一种基于Petri网的砂型铸造过程工序活动能量消耗模型。分析了砂型铸造过程能量消耗特点和设备工作时间，建立了砂型铸造工序活动模型。研究了工序活动与设备的关系，应用Petri网建模方法，对工序活动与设备及资源消耗进行了图形化的描述。在此基础上，分析并给出了砂型铸造工序活动能耗计算方法。以砂型铸造造型工艺过程为应用对象进行了能量消耗特性分析和计算，验证了所提方法的可行性。

关键词: 工序活动, 工序能量消耗;砂型铸造;Petri网