The effect of ductile cast iron matrix on zinc coating during hot dip galvanising of castings

• Autorzy: Kopyciński D. , Szczęsny A.
• Języki publikacji: EN

Abstrakty

EN

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 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.

Słowa kluczowe

EN

hot-dip galvanizing; ductile iron; growth kinetics; zinc coating; metallic matrix

PL

cynkowanie ogniowe; żeliwo sferoidalne; kinetyka wzrostu; powłoka cynkowa; osnowa metaliczna

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2012
• Tom: Vol. 12, iss. 4
• Strony: 101--104
• Opis fizyczny: Bibliogr. 13 poz., rys., tab., wykr.

Twórcy

autor

Kopyciński D.

autor

Szczęsny A.

• AGH University of Science and Technology, Reymonta 23, 30-059 Kraków, Poland,

Bibliografia

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• [2] Kopyciński D., Guzik E., Wołczyński W. (2006). The shaping of zinc coating at the surface of ductile cast iron. Inżynieria Materiałowa, 5, 1081-1084.
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• [10] Jordan C. E., Marder A. R. (1997). Effect of substrate grain size on iron - zinc reaction kinetics during hot-dip galvanizing. Metallurgical and Materials Transactions 28A, 2683-2694.
• [11] Jordan C. E., Marder A. R. (1997). Effect of phosphorus surface segregation on iron-zinc reaction kinetics during hot-dip galvanizing. Metallurgical and Materials Transactions 28A, 2695-2703.
• [12] Guzik E.(2010). Structure and mechanical properties as well as application of high quality vermicular cast iron. Archives of Foundry Engineering, 10, 95-100.
• [13] Zych J., Żyrek A. (2011). Vermicular cast iron production in the "Inmold" technology (in the Metalpol Casting House) and the assessment of its thermal fatigue resistance. Archives of Foundry Engineering, 11, 255-260.