The application of CAE to the risering design of furan resin mold cast iron castings

摘要

The objective of this study is focus on the manufacturing of sound furan resin mold castings, by utilizing the foundry-use Computer Aided Engineering (CAE) technology to investigate the influence of risering design on furan resin mold casting. Both simulation and analysis will first be conducted, and then experiment will also be adopted for comparison and validation, so the technology on optimize the furan resin mold castings' risering design can be established. The size of casting is 300L × 150W × 50H mm, pouring material is FC350 and use the pressurized gating system. First, utilizing Chvorinov's rule to design the initially riser. The parameter of design including of the size(H : D = 120mm : 100mm, 100mm : 100mm, 100mm : 90mm, 100mm : 80mm) and location (top or side riser) of the riser. Then building the 3D model and run simulation on foundry-use CAE. At last, pouring all the different risering design and compare with the results of CAE simulation to investigate the feeding performance and yield on castings. So the technology on optimize the risering design of furan resin mold castings will be established. The results of this study indicate that: (1) When use top riser on furan resin mold castings and Modulus{sub}(riser)/ Modulus{sub}(cast)≥1, we can get sound castings. Using foundry-use CAE could raise the yield from 54.9% to 63.7%. (2) When use side riser on furan resin mold castings and Modulus{sub}(riser)/ Modulus{sub}(cast)＞0.86, we can get sound castings. Using foundry-use CAF could raise the yield from 54.9% to 69.1%. (3)The yield of side riser is 5.4% higher than top riser. It means that side riser has better feeding performance than top riser.