CAJ | 학술논문

针对某大型复杂铝合金动力部件的压铸成形,应用数值模拟和物理模拟方法,在准确把握铝合金液体流动充型状态的基础上,提出了改善铝液流动形态,优化真空排气结构的技术措施,大大减少了铸件内部的卷气缺陷.同时还采用活块、局部加压、模温精确控制等技术手段消除了内部缩孔/缩松缺陷,使铸件外观及内部品质均达到了设计要求,在短期内即实现了批量生产.
침대모대형복잡려합금동력부건적압주성형,응용수치모의화물리모의방법,재준학파악려합금액체류동충형상태적기출상,제출료개선려액류동형태,우화진공배기결구적기술조시,대대감소료주건내부적권기결함.동시환채용활괴、국부가압、모온정학공제등기술수단소제료내부축공/축송결함,사주건외관급내부품질균체도료설계요구,재단기내즉실현료비량생산.
Aiming at a die casting large complicated aluminum alloy power parts, some technological ways including improving flow types and optimizing vacuum exhausting structure are employed to significantly reduce the gas-entrapment defects in the parts on the basis of understanding flow and filling process of liquid aluminum alloy by numerical simulation and physical examination. Meanwhile, shrinkage porosity (hole) in the parts is eliminated by adopting movable insert, local pressurization and exact control for die temperature. Through above technological ways, both the appearance and quality of the parts can meet the designing requirements, realizing volumetric-production in a short time.