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

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Abstract:

In view of the problem of bulge particle defect on the surface of hot-dip galvanized sheets, the causes were analyzed by investigating defect characteristics and surface cleanliness of cold-rolled steel sheets. The results show that the cause of bugle particle defect lies mainly in the residual iron on the surface of cold rolled steel sheets, which has not been cleaning off during degreasing and interfere the normal formation of coating. The bugle particle defect can be effectively prevented when the laser-textured work rollers of No.1 stand of HC tandem cold mills are replaced by smooth rollers, because the residual iron on the surface of cold rolled steel sheets can be reduced obviously.

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Info:

Periodical:

Advanced Materials Research (Volumes 834-836)

Pages:

330-334

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.834-836.330

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Online since:

October 2013

Authors:

Tai Xiong Guo*, Xue Qiang Dong, Yi Lin Zhou, Yong Qing Jin

Keywords:

Bulge Particle, Hot-Dip Galvanizing, Surface Defect, Surface Quality

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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