Due to the small stiffness of the steel sheet itself, Dalian sand blasting is prone to deformation under the action of residual compressive stress on the steel surface. This deformation can be controlled from the following aspects: improve the stiffness of the steel sheet components, increase the stiffness of the steel sheet by adding reinforcing ribs, and improve the deformation resistance: use the same sand blasting (shot blasting) equipment, the same abrasive and the same strength, and carry out symmetrically on both sides of the steel sheet, The deformation can be reduced; The use of light and small abrasive particles will not only reduce the impact on the steel plate, but also reduce the deformation of the steel plate: reverse deformation before sand blasting (shot blasting), and the steel plate will basically return to the plane after rust removal.