Specific heat capacity (C_p), density (ρ), and thermal conductivity (λ) of phenolic-bonded 3D-printed sand (3DPS) molds have been determined in the temperature range of 20–1400 °C using differential scanning calorimeter (DSC), dilatometer, and hot wire method. The results have been used to simulate the thermal gradient in a sand mold during casting aluminum using a commercial simulation software. The simulated results have been compared with laboratory-measured results and simulated results using the software’s database for conventional mold making. Our results show that available database for sand thermal properties cannot explain the thermal gradient in 3DPS molds and this manufacturing process affects the thermal properties of the mold compared to traditional mold making. It is necessary to collect data for a variety of 3D-printed sand molds to ensure accurate modeling simulation in the foundry industry.

比热容（C _p），密度（ρ）和热导率（λ）已使用差示扫描量热仪（DSC），膨胀计和热线法在20–1400°C的温度范围内确定了酚醛粘合3D打印砂（3DPS）模具。该结果已用于使用商业仿真软件来模拟在铸造铝模期间砂型模具中的热梯度。模拟结果已与实验室测量的结果进行了比较，并使用软件的数据库进行了常规模具制造的模拟结果的比较。我们的结果表明，可用的砂子热特性数据库无法解释3DPS模具中的热梯度，并且与传统模具制造相比，该制造过程会影响模具的热特性。必须收集各种3D打印砂模的数据，以确保在铸造行业进行精确的建模仿真。