A design supporting tool for a flexible cast iron feeding system based on modulus expressed by the ratio of volume to surface area was developed for casting engineers to design efficient cast iron feeding system quickly and accurately. The main features of this tool are that (1) design of feeding system can be completed on general-purpose spreadsheet software, (2) the overall modulus of a casting product or effective partial modulus of the area affected by a feeder is accurately calculated using the 3D CAD data of the product, (3) the modulus and dimension of the feeder are calculated using the modulus of the product, and (4) users can set calculation formulas and material data. In addition, the effectiveness of this tool was confirmed by using it for designing a feeding system based on actual cast iron products.
