Establish sand casting process parameters

The purpose is to establish the quantitative relationship between sand casting process parameters and carbon emission in the process. Sand casting process design is the process of analyzing the casting process and determining the production process scheme and process parameters of sand casting under the requirements and production conditions of casting parts. Sand casting process parameters are composed of parameters of different types and attributes. Sand casting process parameters have different characteristics. Some process parameters are directly determined according to the product drawings input by upstream customers to the casting enterprise and the enterprise production process. The determination of such parameters only needs to consider the needs of customers and the enterprise production process, such as minimum wall thickness, mold pulling inclination, machining allowance and other process parameters, The design of such parameters is not affected by other factors, and the independence of parameters is high.

There are preconditions for the determination of some design parameters. These design parameters can only be determined on the basis of other determined process parameters and process schemes, including casting temperature, cooling time and other parameters. They are designed according to process parameters such as wall thickness and casting material. The design of these process parameters depends on other process parameters, It has coupling relationship with other process parameters. Extract the process parameters representing the properties of materials, such as metal brand, molding sand type and other process parameters. These process parameters are related to the properties of materials and reflect the inherent properties of materials.

Through the above analysis, in order to facilitate the determination of the quantitative influence relationship between the process parameters of sand casting and process carbon emission, according to the attribute relationship between the process parameters, the process parameters of sand casting are divided into three process parameter types: independent process parameters of sand casting, coupling process parameters of sand casting and inherent process parameters of sand casting, Independent process parameters of sand casting refer to the process parameters directly determined according to the product drawing input from upstream customers to the casting enterprise and the enterprise’s production process, including processing allowance, draft angle and other process parameters; The coupling process parameters of sand casting refer to the process parameters that can be determined on the basis of other design process parameters, including casting temperature, cooling time and other process parameters; Inherent properties of sand casting process parameters are parameters that indicate the inherent properties of the objects related to the casting process, such as metal brand of sand casting, type of molding sand and other parameters.

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