Talk about what is the effect of base slabs zinc layer adhesion

galvanized refers to the surface of metal, alloy or other material coated with a layer of zinc in surface treatment technology in one of the beautiful, rust, etc. Is mainly USES the method of hot dip galvanized. Talk about what is the effect of base slabs zinc layer adhesion 1, the surface roughness increases according to the principle of meshing circular plate surface roughness can improve zinc layer adhesion, but in fact, due to the rough original plate, also for the rolling oil, grease and iron powder residues have created favorable conditions, is not conducive to improve the zinc layer adhesion, or even have a tendency to deteriorate. 2, the chemical composition of substrate chemical composition of the steel substrate adhesion: the influence of the zinc layer steel base w ( Si is higher, practice shows that the steel base w ( Si) Can cause high Fe - Zinc, alloy layer thickening of intense zeta, form the gray coating, adhesive deteriorate the galvanized layer. Besides c, the influence mechanism in Yu Gangji involved in violent reaction, cause the Fe - Zinc alloy layer thickening, worsening the zinc layer adhesion performance. 3, requirements for hot dip galvanized steel strip surface cleanliness of adhesion to the influence of galvanized zinc layer material usually adopt after pickling, cold rolling steel strip. The strip surface residue mainly fat ( Rolling oil, lubricating oil, hydraulic oil, etc. ) And tiny solid particles ( Iron powder, dust, etc. ) 。 4, the influence of surface defects, mainly for hot dip galvanized strip surface defects substrate scratch. Cut parts w ( Al) Low, the Fe - Al alloy is less, inhibition of Fe - Zinc alloy's ability to generate poor, making the iron zinc alloy layer of rapid growth, reduce the zinc layer adhesion. Above is galvanized equipment related issues, the hope can help you