Aiming at the problem of performance and dimensional accuracy instability of casting sand mold under immature process, a study on the influence of different content of furan resin on the performance and dimensional accuracy of casting 3D sand mold was carried out. With the same tensile test block, compression test block and standard size measurement test block printing process as experimental conditions, based on industrial grade 3D printing equipment, the changing rule of parameter change of furan resin added is studied. On this basis, a variety of different resins are used to print the test block, each group takes the same number of test blocks. Mechanical properties and dimensional accuracy were measured. The influence of resin addition on product performance and dimensional accuracy was studied by range analysis. The experimental results show that there is a relationship between the interaction and dependence between the numerical addition and the mechanical and dimensional precision of the 3D print sand mold. The mechanical and dimensional precision of the sand mold can be reached to the best level in a certain range of resin added. The research results provide guidance and direction for further promoting the application of 3D printing technology in the foundry industry, and provide a theoretical basis for the application of 3D printing sand in different casting situations.
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