Effect of melt cleanliness on the formation of porosity defects in automotive aluminium high pressure die castings

被引：43
作者：
Tian, C [1 ]
Law, J
van der Touw, J
Murray, M
Yao, JY
Graham, D
John, DS
机构：
[1] CSIRO, Mfg Sci & Technol, Preston, Vic, Australia
[2] Nissan Casting Australia Pty Ltd, Dandenong, Vic, Australia
[3] CSIRO, Math & Informat Sci, Clayton, Vic 3168, Australia
[4] Univ Queensland, CAST, St Lucia, Qld, Australia
来源：
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY | 2002年 / 122卷 / 01期
关键词：
porosity; casting porosity; high pressure die casting; melt cleanliness; inclusions;
D O I：
10.1016/S0924-0136(01)01229-8
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effect of melt cleanliness on the formation of porosity defects in automotive aluminium high pressure die castings (TA Transmission Case) was investigated experimentally. The experiments were conducted under actual industrial production conditions at Nissan Casting Australia Pty Ltd. (NCAP). It was found that the probability of rejection due to excessive porosity present at critical locations in the castings (determined using a real-time X-ray radiographic method) increased as the number of inclusions in the melt (measured with LiMCA II) increased. The types of inclusion in the melt were identified as mainly amorphous oxides, oxide films and sludge particles. (C) 2002 Published by Elsevier Science B.V.
引用
收藏
页码：82 / 93
页数：12
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