Method for controlling inclined grains on surface of thin galvanized steel sheet and product thereof

The invention relates to the technical field of galvanized steel sheet machining, in particular to a control method for thin-gauge galvanized steel sheet surface twill and a product thereof. The control method comprises the following steps: heating a plate blank through a hot rolling process, rolling and lubricating, finish rolling, cooling, coiling, pickling in an acid rolling unit, rolling into a cold hard coil, annealing at medium temperature through a continuous galvanizing unit, small finishing, and on-line small withdrawal and straightening to obtain a target finished product steel coil. According to the invention, through a complete-process low-cost consistent design, stable production of the high-strength steel-grade thin galvanized steel plate with the thickness of less than 0.60 mm, the width of less than 1600 mm and the yield strength of more than 220 MPa is realized on the premise that a hot rolling temper mill is not used and offline repair, withdrawal and straightening, finishing and inspection