Cause and Remedies of Bulge Particle Defect on Surface of Hot-Dip Galvanized Steel Sheets

Guo, Tai Xiong; Dong, Xiucheng; Zhou, Yi; Jin, Yong Qing

doi:10.4028/www.scientific.net/amr.834-836.330

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(2 citation statements)

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“…The thickness layer depends on the material thickness [2,16], this affects up to 1.5mm material thickness by 45 microns. When the surface cleanliness of cold rolled sheet is poorer, the oil and residual iron can remain on the sheet surface, this increases with increasing sheet thickness [25], thus requiring further cleaning of the sheet after the rolling process.…”

Section: Parameters Influencing the Hot Dip Galvanizingmentioning

confidence: 99%

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Parameters Influencing the Hot Dip Galvanizing Processes of Sheet Metal

Atima¹,

Wandera²,

Favor³

2021

AJMSP

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Galvanized carbon steel is one of the most used engineering material in industries, but its quality can be affected by the process parameters. The most common used galvanizing process is Hot Dip Galvanizing amongst others. The methods used were quantitative and qualitative for determining the parameters influencing galvanizing. The analytical techniques were performed by spectrometers, visual inspections thru optical and scanning electron microscope which show how parameters at the pickling, cold rolling and galvanizing processes that affect the quality of the galvanized components produced. During galvanizing there are process parameters that need to be monitored, necessitating evaluation of the process parameters that affect the hot galvanizing process. The focus of this paper is on parameters that affect the hot dip galvanizing process from different stages (pre-treatment, galvanizing and post treatment), but especially focused at the galvanizing bath. The quality of the galvanized carbon steel products gets greatly affected by the interference of the process parameters, this can lead to various types of rejects, thus influencing the quality leading to lower production output during the galvanizing process. But good follow ups of the parameters can lead to less defects which eventually increases production efficiency, component effectiveness and profit margins thus increased production of the hot dip galvanizing steels. So there is need to ensure that parameters for galvanizing are in accordance to standards.

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Section: Parameters Influencing the Hot Dip Galvanizingmentioning

confidence: 99%

“…These steps are necessary to prove the compliance of the product [6]. Poor adherence to quality parameters during surface preparation (pretreatment) [25], galvanizing procedures and post treatment can lead to production of poor quality products, which then will lead to rejection of the final product.…”

Section: Pos-treatment / Inspectionmentioning

confidence: 99%