In this paper, it is expounded that the specification of product produced by the high-level modern continuous pickling line of hot-rolled plate is (1.2~8.0) mm ×(800~1 680) mm and the strength is 780 MPa. In the process of hot rolling to pickling, the influences of scale and pickling process on the surface of steel belt are analyzed and studied through laboratory and field experiments so that the problem of blackening on surface of pickling steel belt is improved.

pickling steel belt  /  blackening  /  scale  /  improvement