Journal article 1347 views 184 downloads
Optimizing gate location to reduce metal wastage: Co–Cr–W alloy filling simulation
,
Helen Davies ,
Nicholas Lavery ,
Steve Brown,
Dyfyr Davies
Journal of Materials Processing Technology, Volume: 240, Pages: 249 - 254
Swansea University Authors:
Fawzi Belblidia , Helen Davies , Nicholas Lavery , Steve Brown
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DOI (Published version): 10.1016/j.jmatprotec.2016.09.027
Abstract
This research is aimed at revealing the reasons for the extra Co-Cr-Walloy wastage in the risers in sand casting. The alloy filling behaviour in both the original and modified moulds was investigated numerically. The alloy-air interface was captured by using Volume of Fraction method. For the origin...
| Published in: | Journal of Materials Processing Technology |
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| ISSN: | 0924-0136 |
| Published: |
Elsevier BV
2017
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa30309 |
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| Abstract: |
This research is aimed at revealing the reasons for the extra Co-Cr-Walloy wastage in the risers in sand casting. The alloy filling behaviour in both the original and modified moulds was investigated numerically. The alloy-air interface was captured by using Volume of Fraction method. For the original mould, an unfilled volume in the vicinity of the runner bar top was apparent and it was refilled by a back flow, originated from the risers in the late stage of filling. The back flow behaviour required a higher level of the liquid alloy in the risers, which resulted in excessive wastage, and it was essential to form the required shape of the cast. For the modified mould, the unfilled volume was eliminated and the cast part shaping time was reduced to around 10 s from 90 s. The alloy wastage in the risers was reduced by 11%. |
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| Keywords: |
Sand casting, Mould design, Co-Cr-W alloy, Computational fluid dynamics, Filling behaviour |
| College: |
Faculty of Science and Engineering |
| Start Page: |
249 |
| End Page: |
254 |