The Effect of Ductile Cast Iron Matrix on Zinc Coating During Hot Dip Galvanising of Castings

被引：5
|
作者：
Kopycinski, D. [1 ]
Szczesny, A. [1 ]
机构：
[1] AGH Univ Sci & Technol, Reymonta 23, PL-30059 Krakow, Poland
来源：
ARCHIVES OF FOUNDRY ENGINEERING | 2012年 / 12卷 / 04期
关键词：
Hot dip galvanizing; Ductile iron; Growth kinetics of zinc coating; Metallic matrix;
D O I：
10.2478/v10266-012-0114-x
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The growth kinetics of the zinc coating formed on the surface of casting made from ductile iron grade EN-GJS-500-3 was investigated. To produce homogenous metal matrix in test samples, the normalising and ferritising annealing was carried out. Studies showed a heterogeneous structure of cast iron with varying content of the phases formed. This was followed by hot dip galvanising treatment at 450 degrees C to capture the growth kinetics of the zinc coating (the time of the treatment ranged from 60 to 600 seconds). Nonlinear estimation of the determined growth kinetics of the alloyed layer of a zinc coating was made and an equation of the zinc coating growth was derived. Based on the results of the investigations it was concluded that thickness of the zinc coating formed on the surface of casting with a 100% pearlitic matrix makes 55% of the thickness of coating formed on the surface in 100% ferritic.
引用
收藏
页码：101 / 104
页数：4
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