On Liquid Metal Wetting of Casting Rings for DC Casting
2015 (English)In: TMS Light Metals / [ed] Margaret Hyland, Warrendale: Minerals, Metals & Materials Society, 2015, Vol. 2015-January, 859-864 p.Conference paper (Refereed)
During air–slip direct chill casting of aluminum alloys, uneven or low air pressure areas at the surface of the porous graphite ring mold, can cause the metal to stick to the graphite ring and produce traces along the billets called vertical drags (VD). To prevent this type of defect, it would be an advantage to decrease the wettability of the graphite ring. It has been shown that nanostructured surfaces can have hydrophobic properties, and a question is weather the same effect can be achieved for molten metals. A TiO2 nanowire structure is proposed to cover the casting ring, and the wetting behavior of such a structure has been studied, and compared to the wetting at a regular graphite ring surface by the dispensed sessile drop method. The results showed that the nanostructured surface very strongly dewetting metal droplets.
Place, publisher, year, edition, pages
Warrendale: Minerals, Metals & Materials Society, 2015. Vol. 2015-January, 859-864 p.
, TMS Light Metals, ISSN 0147-0809
DC Casting, Wetting, Casting ring, Aluminium
Engineering and Technology
IdentifiersURN: urn:nbn:se:miun:diva-26338ScopusID: 2-s2.0-84942925150ISBN: 978-111908244-6OAI: oai:DiVA.org:miun-26338DiVA: diva2:875537
Light Metals 2015 - TMS 2015 Annual Meeting and Exhibition; Walt Disney WorldOrlando; United States; 15 March 2015 through 19 March 2015; Code 113955