alexa Application And Practice Of WC Cermet Sprayed Composite Coating Technology In The Hot-dip Galvanizing Line
ISSN: 2169-0022

Journal of Material Sciences & Engineering
Open Access

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3rd International Conference and Exhibition on Materials Science & Engineering
October 06-08, 2014 Hilton San Antonio Airport, USA

Wang Lu
Accepted Abstracts: Material Sci Eng
DOI: 10.4172/2169-0022.S1.017
With the automotive sheet surface quality requirements continue to increase, for hot-dip galvanizing line roller surface treatment required to improve. We call this direct contact with the strip surface rollers as process roll. Process roll direct contact strip and therefore the performance of the roll surface of the important factors to ensure product quality. Therefore, we hope roll surface coating must have the performance are: Good wear resistence; surface roughness retention; anti-slip; antiadhesion foreign objects; anti-adhesive zinc powder. In the early 1980s, the general use of the chrome plated rollers, improve the wear resistance and anti-adhesion of foreign matter. But the surface hardness is usually HV300-600, thus poor wear resistance of the roll surface, the use of a certain time, the roll surface roughness is quickly decreased. In recent years, thermal spray technology as an alternative means of chrome plating process has been effective depth research and extensive application. WC cermet coating roller surface, while having a good wear resistance, but the zinc dross and other foreign matter adhering to the surface of the roller is easy, an accumulation of these particles in the coating layer at the bottom of the roughness pitsroll surface roughness would drop dramatically, also zinc slag particles adhere to the surface of the roller can cause tiny scratches on strip surface. We used a composite thermal spray surface treatment technology on rolls made improvements.
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