Feeding Against Gravity with Spot Feeders in High Silicon Ductile Iron

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedings – Annual report year: 2014Researchpeer-review

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A test pattern, with three different moduli castings was developed to investigate methods to optimise feeding of high silicon ductile cast irons. Different feeder types, modulus, and locations were investigated using both an insulating and an exothermal sleeve material. Porosities were analysed and classified using X-ray imaging and ultrasound analysis. The effect of the different feeder configurations were classified in reference to defect location, sleeve material, and feeder type, modulus, and location.
The analysis showed that exothermal feeder sleeves with the right configurations can feed up-hill against gravity. This effect may contribute to the thermal expansion created by the exothermal reaction. It was also found that the optimum feeder size does not scale linearly with the casting modulus but that larger casting modulus requires relatively smaller modulus feeders. The thermal gradient created by the feeders made with the insulating sleeve material was not sufficient to significantly improve feeding
Original languageEnglish
Title of host publicationProceedings of 10th International Symposium on the Science and Processing of Cast Iron - SPCI10
Number of pages7
PublisherINTEMA
Publication date2014
Publication statusPublished - 2014
Event10th International Symposium on the Science and Processing of Cast Iron - Mar del Plata, Argentina
Duration: 10 Nov 201413 Nov 2014
Conference number: 10
http://intema.gob.ar/spci/

Conference

Conference10th International Symposium on the Science and Processing of Cast Iron
Number10
CountryArgentina
CityMar del Plata
Period10/11/201413/11/2014
Internet address

ID: 98733508