Numerical modeling of the gas evolution in furan binder-silica sand mold castings. (3rd July 2016)

• Record Type: Journal Article
• Authors: Nastac, Laurentiu; Jia, Shian; Nastac, Mihaela N.; Wood, Robert
• Is Part Of: International journal of cast metals research. Volume 29:Number 4(2016)
• Page Start: 194
• Page End: 201
• Publication Date: 2016-07-03
• Subjects: silica sand mould castings -- furan binder pyrolysis -- numerical modelling; Metal castings -- Periodicals; Founding -- Periodicals; Foundry research -- Periodicals; Foundry chemistry -- Periodicals; 671.2
• DOI: 10.1080/13640461.2015.1125983
• Languages: English
• ISSNs: 1364-0461

Abstract

Abstract : Modelling of gas evolution during sand-mould castings is one of the most important technical and environmental issues facing the metal casting industry. The current effort focused on developing the capability of numerically predicting the gas evolution for the furan binder-silica sand system. Specifically, the decomposition of furan was experimentally analyzed and then predicted based upon the work developed in the current project. This methodology can be easily implemented into existing commercial casting codes. A parametric study was also performed for steel 4340 and aluminium A356 cylinders (D100 × H200 m) and bars (H50 mm × W50 mm × L250 mm) cast into silica sand moulds (furan binder) of 50-mm mould wall thickness to investigate the effects of superheat and heating/cooling conditions of the mould on the gas evolution. Such information would enable more technically and environmentally friendly decisions to be made concerning the process design used to make a given casting.