Manufacturing Method of High Strength Alloying Hot-Dip Galvanized Steel Sheet with Excellent Plating Adhesion and Alloying Process

摘要

The present invention relates to a method for manufacturing a high strength alloyed hot-dip galvanized steel sheet which is used as a steel sheet for automobiles and has excellent plating adhesion and alloying treatment properties, and more specifically, using a hot-dip zinc plating bath containing 0.10 to 0.14 wt.% Aluminum. In the method for producing a high strength alloyed hot-dip galvanized steel sheet containing 0.1 to 1.0 wt.% Of silicon, by adding 0.05 to 0.10wt ..% of tin to the plating bath to produce a high strength alloyed hot-dip galvanized steel sheet It is related with the manufacturing method of the high strength alloying hot-dip galvanized steel sheet excellent in the plating adhesiveness and alloying treatment property.;According to the present invention as described above it is possible to manufacture the alloyed hot-dip galvanized steel sheet with the addition of 0.05 ~ 0.10 wt. Surface quality defects can be greatly reduced.