A simulation comparing the assigned feeder parameters per Table 2. design 16 of the paper entitled "Tapered Riser Design Optimization" by Creese/ Xia
Plate casting moduls = 2 in. (plate thickness/2)
Plate casting volume = 1024 in3
Cylindrical feeder volume = 679 in3
Tapered feeder volume = 525 in3
The simulations were performed using an 18Cr-8Ni stainless steel in resin bonded sand molds.
I have run several simulations using the design parameters per table 2 (all with stainless steel) and have found that in all situations the tapered top feeder performed inadequately.
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