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以EGC2040龙门式加工中心立柱为研究对象,对其铸造工艺进行研究,通过Any Casting软件对铸件充型、凝固过程进行了数值模拟,对缩孔缩松缺陷进行预测,根据模拟与预测结果对原工艺进行优化,并使用三因素三水平正交实验确定最佳工艺参数。研究表明:采用阶梯式、多内浇道浇注方案,在浇注温度1 320℃、浇注速度80 mm/s、冷铁厚度70 mm条件下加工铸件,铸件品质良好,无明显缩孔缩松缺陷,符合生产要求。
Taking the column of EGC2040 gantry machining center as the research object, the casting process was studied. The casting and solidification process of casting was numerically simulated by Any Casting software, and the shrinkage porosity shrinkage was predicted. According to the simulation and prediction results, Process optimization, and the use of three-factor three-level orthogonal experiment to determine the best process parameters. The results show that the castings are processed by stepwise and multi-sprue pouring, the castings are processed at the pouring temperature of 1 320 ℃, the pouring speed of 80 mm / s and the chilled iron thickness of 70 mm. The quality of the castings is good with no obvious shrinkage shrinkage defects. Meet the production requirements.