Improved Analytical Method for Chemical Analysis of Cast Irons Application to Castings with Chunky Graphite
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概要
- 論文の詳細を見る
Chunky graphite is a particular form of graphite degeneracy that appears in the centre of large iron castings, with a well-defined transition from the outer unaffected area and the inner affected one. All previous works that looked for macrosegration to explain the phenomenon concluded that there are no significant composition differences between the inner and outer parts of such castings. This was challenged again because the analytical methods generally used for chemical analysis are not efficient for low-level elements. Accordingly, an ICP-MS procedure has been developed and validated to replace the usual ICP-OES method. Together with the usual methods for analysis of C, S and Si, this ICP-MS procedure has been applied to characterize chemical heterogeneities in a large block with chunky graphite in its centre, and to a standard part for comparison. It could be concluded that no macrosegregation has built up during the solidification process of the block investigated, i.e. that chunky graphite appearance is not related to any composition changes at the scale of the cast parts, in particular of elements known to affect graphite shape such as Ce, Mg, Sb, S, ···.
- 社団法人 日本鉄鋼協会の論文
- 2011-02-15
著者
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Lacaze Jacques
Cirimat Umr Cnrs-ups-inpt 5085
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Asenjo Iker
Engineering And Foundry Dep. Azterlan
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Asenjo Iker
Engineering And Foundry Department Azterlan
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Mendez Susana
Chemical Department Azterlan
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LOPEZ David
Chemical Department, AZTERLAN
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LARRANAGA Pello
Engineering and Foundry Department, AZTERLAN
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Lopez David
Chemical Department Azterlan
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Lacaze Jacques
Cirimat Universite De Toulouse Ensiacet
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Larranaga Pello
Engineering And Foundry Department Azterlan
関連論文
- Critical Temperature Range in Spheroidal Graphite Cast Irons
- Thermal Analysis of the Formation of Chunky Graphite during Solidification of Heavy-section Spheroidal Graphite Iron Parts
- Improved Analytical Method for Chemical Analysis of Cast Irons Application to Castings with Chunky Graphite