基于DOE的大型下架体铸钢件铸造工艺优化研究

发布时间：2018-04-13 22:14

  本文选题：大型铸钢件 + 缩孔　； 参考：《机械工程学报》2017年06期

【摘要】：特大型旋回破碎机下架体铸件生产中产生大量的缩孔缩松缺陷,无法满足质量要求。经研究认为,该铸件产生的缩孔缺陷主要由铸件的内圈冒口类型、内圈和外圈冒口是否添加补贴及补贴类型、浇注温度等因素决定。采用Taguchi试验设计(Design of experiment,DOE)方法,以铸件缩孔体积最小和工艺出品率最高作为试验指标,以内圈冒口类型、内圈补贴、外圈补贴和浇注温度作为影响因子,设计L_9(3~4)正交试验方案,通过ProCAST软件对9组试验方案进行模拟并分析结果,获得了该铸件的最优铸造工艺为内圈用4个圆柱形发热冒口补缩、内圈和外圈均添加补贴、在1 560℃浇注。实际浇注验证结果表明,采用DOE法对该大型铸钢件的铸造工艺优化在最大程度上减少了缩孔缩松的产生,同时也提高了铸造工艺出品率。
[Abstract]:A large number of shrinkage defects occurred in the production of super large scale rotary crusher lower frame castings, which can not meet the quality requirements.It is considered that the shrinkage defects of the casting are mainly determined by the type of inner ring riser, whether the inner ring and outer ring riser are subsidized and the type of subsidy, the pouring temperature and so on.Using Taguchi test design of experiment design of design of experiment doe), taking the smallest volume of shrinkage hole and the highest production rate of casting as the test index, the inner ring riser type, inner ring subsidy, outer ring subsidy and pouring temperature as the influence factors, the orthogonal test scheme was designed.Nine groups of test schemes were simulated and analyzed by ProCAST software. The results showed that the optimum casting process was that the inner ring was fed with four cylindrical heating risers, the inner ring and outer ring were subsidized and poured at 1 560 鈩，

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