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通过检测和数字仿真技术分析了镁合金摩托车轮毂压铸件缩松、缩孔区域形成的机理。结果表明,裂纹是铸件凝固时的热节部位得不到合金液的补缩而形成缩松所引起的;轮心处的缩孔是由于分流锥尺寸过长,使轮心局部未在压力下凝固而形成的,并探讨了防止和消除收缩缺陷的措施。
Through the testing and digital simulation technology, the mechanism of shrinkage and shrinkage area formation of magnesium alloy motorcycle wheel die casting was analyzed. The results show that the crack is caused by the shrinkage caused by the shrinkage of the liquid alloy during the solidification of the castings. The shrinkage hole at the wheel center is due to the excessively large size of the taper cone, so that the wheel center is not under pressure Coagulation and formation, and to explore the measures to prevent and eliminate shrinkage defects.