Sand casting process

The carbon emission of sand casting parts is determined by its casting process. The typical sand casting production process goes through sand mixing, molding, box closing, smelting, pouring, unpacking, cleaning and other processes from the input of materials and energy to the output of products and emissions. In each process, energy and materials are input, and part of the energy is used as the energy consumption of the production process, Part of the formed heat is lost, part of the materials form parts and are input into the subsequent process, and part of them generate waste or are consumed. Relationship between sand casting process and carbon emission source.

For example, in the sand mixing process in the sand casting process, it is necessary to use special sand mixing equipment to mix the curing agent, resin and silica sand evenly. In the traditional molding process, the sand mold goes up on the roller table to the lower end of the sand outlet of the sand mixing equipment, the resin sand falls into the sand box, and after vibration, it enters the drying furnace for baking, followed by core lowering, box closing, smelting, pouring A series of processes such as sand falling. Modeling and core making can adopt machine modeling and manual modeling. In addition to similar modeling methods, cold core box and hot core box can also be used for core making. This series of sand casting processes are determined by the sand casting process design scheme, and the carbon emission of each process is affected by the process. Different process designs will produce different carbon emissions. Appropriate sand casting process design is not only the guarantee of sand casting quality, but also a direct factor affecting the carbon emission of sand casting process.