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利用铸造模拟软件Pro CAST对新型Fe-W合金应力框件在3种不同浇注温度、浇注速度和砂型预热温度下进行了铸造应力场模拟,得到铸件的应力分布情况,并对模拟结果进行了分析。分析了铸件位移最大节点处的位移随浇注温度、砂型预热温度和浇注速度的变化。设计L_9(3~4)正交试验对铸件残余应力、位移和砂型预热温度、浇注速度、浇注温度的关系进行了探讨,并分别采用单因素分析法和极差分析法对模拟结果进行了分析,结果表明:砂型预热温度对残余应力和变形影响较大,砂型预热温度越高,铸件残余应力越小,变形越小;浇注温度对残余应力影响次之,对变形的影响最小,浇注温度越高残余应力越大,变形越大;浇注速度对残余应力影响最小,对变形的影响次之,浇注速度越大,残余应力越小,变形越小;浇注速度为0.6 m/s,浇注温度为1 560℃、砂型预热温度为600℃时,铸件产生的残余应力较小,浇注速度为0.7 m/s,浇注温度为1 560℃、砂型预热温度为600℃时铸件产生的位移、变形较小,可指导实际生产。
Casting simulation software Pro CAST was used to simulate the casting stress field of the new Fe-W alloy stress frame under three different pouring temperatures, casting velocities and sand preheating temperature, and the stress distribution of the castings was obtained. The simulation results were carried out analysis. The displacement at the maximum node of casting displacement was analyzed with the variation of pouring temperature, sand preheating temperature and pouring speed. The relationship between residual stress, displacement and preheating temperature, pouring speed and pouring temperature of castings were studied by orthogonal design of L_9 (3 ~ 4). The simulation results were analyzed by single factor analysis and range analysis respectively The results show that the pre-heating temperature has a great influence on the residual stress and deformation. The higher the preheating temperature, the smaller the residual stress and the smaller the deformation. The pouring temperature has the least effect on the residual stress, The higher the pouring temperature is, the larger the residual stress is and the larger the deformation is. The pouring speed has the least effect on the residual stress, followed by the deformation. The larger the pouring speed, the smaller the residual stress and the smaller the deformation. The pouring speed is 0.6 m / s, Casting temperature of 1 560 ℃, the sand preheating temperature of 600 ℃, the casting residual stress is small, the casting speed of 0.7 m / s, pouring temperature of 1 560 ℃, sand preheating temperature of 600 ℃ casting produced Displacement, deformation smaller, can guide the actual production.