Study of Cartridge Receiver Gravity Casting Process Based on 3D Printing Sand Mold and Numerical Simulation [基于数值模拟和砂型 3D 打印的机匣整体重力铸造工艺研究]

作者：Xu W.-Y.; Chen W.-P.^*; Jin F.; Zhu D.-Z.; Ling Z.-C.

来源：Foundry, 2019, 68(8): 905-910.

• 3D print sand
• Cartridge receiver
• Gravity casting
• Simulation

The cartridge receiver in helicopter transmitter has characteristics of complex internal cavity and thin-walled structure, therefore, it is difficult to prepare the cartridge receiver using traditional monoblock casting method. This research studied the monoblock casting process of cartridge receiver based on 3D printing method and ProCAST numerical simulation. The simulation results show that casting forming ability is better at the pouring temperature of 720 ℃ due to smooth filling and sequential solidification; when the overall solidific-ation is up to 46%, the casting body has been solidified without isolated liquid phase area, thereby shrinkage porosity defects can be effectively avoided. Subsequently, the optimized model was imported into the 3D printing platform to make relevant sand molds for casting cartridge receiver. The examinations of X-ray and dimensional accuracy show that the cartridge receiver casting is complete, without any pores and evident defects, and the dimensional precision meets the requirements of standards. The manufacture cycle of the products is shortened 3/4. It can effectively promote the added value of products for traditional manufacturing, thereby enhancing their competitiveness in the field of high-technology products.

• 单位
  华南理工大学