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The article used new experimental equipment for effective testing of adhesion coatings on the sheets. Testing was performed in jig by bending roller with selected radius. In the context of experiments a multi-jet system was used. The aim of my previous publications and even this article is to achieve that by using of multi-jet plasma system, samples were achieved that will not be damaged coating after the bending. Specific coats on the sheets have been optimized composition of the plasma so that its result was the maximum adhesion of the coating to the steel base of samples. Results of experiments are presented in article. The article focuses on the tensile test and the result of the tensile test. All important values of tensile tests are published in this article. For example: elongation A50, Ag, tensile strength Rm, and yield strength Rp0.2. Results with values of tensile tests are also presented in this article. Selected coated steel samples were photographed in the clamped in jig on the tension device. Group selected samples were divided by the applied coating. First, the basecoat, the final coat and coat were treated with a multi-jet plasma system. From a previous publication graphs show the dependence of the strength on elongation of a sample. Further research will be focused on selected coated samples, where samples are etched onto the surface of a network and are bent in a special jig in range bending radius R11 to R35. After bending, the samples are examined at a special optical device and are evaluated deformation circles in straight and bent part of the samples.

KEYWORDS

Nozzles, Bending, Multi-Jet Plasma System, Flow, Tensile Tests, Coating

Cite this paper

Schwarzer, E. and Dvořák, M. 2016 Experiments with Forming Coated Sheets with Plasma-Chemical Pretreatment of the Surface. Journal of Surface Engineered Materials and Advanced Technology, 6, 118-124. doi: 10.4236-jsemat.2016.63011.





Autor: Emil Schwarzer, Milan Dvořák

Fuente: http://www.scirp.org/



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