Adhesive Bonding Joints of Coating with Zn/Mg Layer on Sheets for Car-Body Panels at Temperature Loading

Abstract

The paper deals with the monitoring of utility properties of new coating type on the basis of Zn/Mg (ZM). For the comparison there was used commonly used coating in the series production of car-body panels on the basis of zinc (Z100). Measured results markedly contribute to improve production systems of car-body adhesion bonding on the basic of performed evaluation of applied coatings types utility properties quality with regard to influence of temperature and corrosion environment. Testing was carry out by T-peel test acc. to ISO 11339 when such type of loading represents crucial bonding fracture type. Thus results reveal information about behavior of adhesive joints strength properties together with the type of fracture as a criterion for suitable application of new coatings types on the basis of Zn/Mg and their implementation into series production of automobiles.

Causes and Prevention Measures of Bright Pitting Defects on Surface of Hot-Rolled Galvalume Steel Sheets

“…In terms of another type of surface defects, bright pitting, for users in the construction industry, although it might not cause serious problems such as quality decline, it can affect the appearance of the products since the color of the defect area is different from the surroundings. Moreover, in the subsequent coating process, defects such as pits, exposed substrate, and pinholes formed after coating can hardly make the surface quality of the products meet the requirements of users, therefore, studying the causes and preventions measures of bright pitting defects is very important for improving the quality of hot-dip galvanized products [16][17][18][19][20].…”