A comparison of methods used to assess aluminium melt quality

Dispinar D., Campbell J.

2nd International Symposium on Shape Casting held at the 2007 TMS Annual Meeting, Florida, Amerika Birleşik Devletleri, 25 Şubat - 01 Mart 2007, ss.11-12 identifier identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Cilt numarası:
  • Basıldığı Şehir: Florida
  • Basıldığı Ülke: Amerika Birleşik Devletleri
  • Sayfa Sayıları: ss.11-12
  • İstanbul Üniversitesi Adresli: Evet

Özet

This study reviews and compares the techniques such as LIMCA, PoDFA, Prefil, LIAS and RPT that are used to quantify defects in liquid aluminium alloys. in general, it is found that most of the current techniques are not fully satisfactory. Only the Reduced Pressure Test (RPT) appears to give reliable results of the number and size of bifilms (and sometimes, but not infallibly, an indication of hydrogen content). The density (or Density index) is valuable, but requires the supplement of additional quantification from the number and size of bifilms, which are recommended as additional major quality indicators. The use of a new Melt Quality chart is described.