The T-bend performance reduction of the color coated steel coil is the initial performance of the metal corrosion under the coating. At this time, there won’t have coating blister or fall off phenomenon if only observe from the surface of color coated steel coil, but the T-bend performance reduction has shown that the metal corrosion under the coating has already begun to happen.
This is because the coating does not have any internal density unevenness, micropores, cracks and gaps and other defects, and in the environment medium still exists the transmission channel that the outside media infiltration can permeate. During the related experimentation, CAMELSTEEL found that the water molecules in coating surface can reach the coating metal matrix interface through the adsorption, diffusion, infiltration and other effects, until caused the destruction of coating bond interface.
The initial macroscopic manifestation of this interface’s destruction may be the decrease in coating adhesion, it’s performance is the poor coating adhesion timeliness, and its further macroscopic performance is the coating blistering, shedding and so on. Therefore, the corrosion resistance of the color coated steel coil can be predicted by the experimental results of the adhesion aging performance.
About Us
Zibo Camel Material Co., Ltd. was created in 2009 and focus on creating famous steel coil brand – CAMELSTEEL. We are professional manufacturer and trading company of steel coils.metal roofing companies, Our main products include prepainted galvanized steel coil, prepainted galvalume steel coil, galvanized steel coil , galvalume steel sheet and corrugated roofing sheet etc. .And they are widely applied in the area of building, household appliances, light industry and decoration etc. , both domestic and foreign markets. We adopt advanced production technology in produce process. And there are two color coated steel line, two galvanized line and one galvalume line.
