Because many different methods can be used to process the same casting to meet the technical requirements of the drawing. Therefore, different process designs will affect the use of materials, energy consumption, production time and resource cost and other indicators. For example, the hole features existing in the castings can be manufactured with sand cores or machined at the cleaning stage, and these indexes will change due to the different process design characteristics of the castings. To increase the efficiency of the foundry industry needs to rely on low manufacturing costs, low carbon emissions, while improving production efficiency. In the actual foundry production process, the smaller the carbon emission produced in the foundry process, the less the environmental pollution, and the higher the environmental benefit of the foundry enterprise; the lower the resource cost in the foundry production process, the higher the economic benefit of the foundry enterprise.
The longer the production time of casting, the lower the production efficiency, and the production time will in turn affect carbon emissions and manufacturing costs. The above quantitative models are single discrete models, the existing research is not very suitable for the benefit evaluation of sand casting industry, and a comprehensive evaluation dimension is needed to evaluate the benefits of sand casting. By studying the characteristics of process design and combining these important quantitative indexes, a characteristic carbon benefit model of sand casting process design is put forward in this paper.
The carbon benefit model should aim at low emission, high efficiency and low cost of sand casting production, reduce casting energy consumption, reduce greenhouse gas emissions and improve production efficiency in order to achieve the unity of enterprise economic interests and environmental impact. According to the classification of casting process design characteristics, this paper constructs three quantitative models of carbon emission, production time and resource cost under the influence of process design characteristics, and evaluates the comprehensive carbon benefit. The carbon benefit model can improve the benefit of sand casting industry and provide a theoretical basis for low-carbon transformation of enterprises.