The calculation range of resource cost is the same as that of carbon emissions and production time. The material cost of each production department is calculated according to the market price of a certain period of time. The energy cost is calculated by converting the electricity consumed by various equipment into electricity charges, which are calculated according to the charging standards of different regions. The labor cost is calculated according to 20 yuan / h. The residual cost of the three process schemes mainly calculates the cost of self-made moulds and so on. The data of resource cost comes from a domestic foundry. Through the calculation of the formula, the result is shown in the figure.
By comparing the resource costs of the three process schemes, it can be seen that all kinds of resource costs of FE1 are high. FE2 and FE3 are hole-making schemes for sand cores, which have their own advantages and disadvantages in material, energy, labor and residual cost. Among them, the resource cost of FE2 is 16.084% lower than that of FE1. The resource cost of fe3 is 16.503% less than that of FE1. The cost of FE1 is high, mainly because FE1 needs to melt more liquid metal and the metal mold is expensive, so wood mold can be selected in small batch production to reduce the remaining cost of resource cost. The labor cost of FE1 is 600 yuan and 570 yuan more than that of FE2 and FE3 respectively, which may be due to the longer processing time or more labor input of FE1. The labor cost of the machining hole manufacturing process can be reduced through reasonable personnel planning, so as to improve the economy of the production process. By optimizing the process parameters related to the casting geometry, the time of selecting the core-making process plan FE2 of FE3 is optimized, and the resource cost of FE3 is the lowest.