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以某车辆铝合金座椅骨架为研究对象,设计其挤压铸造工艺方案,运用AnyCasting软件对铸件的挤压铸造充型、凝固过程进行模拟,预判缩孔、缩松缺陷的发生部位,分析缺陷原因。采用局部增压与建立补缩通道技术优化方案,消除了缩孔、缩松缺陷。研究表明,对铸件厚大部位反向局部增压,当增压压力为100 MPa,增压时间为0.5s时,局部增压效果理想。应用优化方案生产铸件,得到铸件质量良好,无明显缺陷,铸态下铸件的抗拉强度达到271 MPa,伸长率达6.52%,符合标准要求。
Taking aluminum alloy seat frame of a certain vehicle as the research object, the squeeze casting process scheme was designed and AnyCasting software was used to simulate the process of filling and solidification of squeeze castings of castings. The location of shrinkage and shrinkage defects was predicted and analyzed. Defect reason. Adopting local pressurization and establishing the technology of supplementing channel optimization, eliminating the shrinkage and shrinkage defects. The research shows that the partial supercharging effect is ideal when the superposition of large part of castings is reversed. When the supercharging pressure is 100 MPa and the pressurizing time is 0.5s, The application of optimization program to produce castings, castings obtained good quality, no obvious defects, casting castings under the condition of tensile strength of 271 MPa, elongation of 6.52%, in line with standard requirements.