Method for preventing steel plates and steel grit from being rusted in wet shot blasting technology

The invention relates to the technical field of metal rust prevention, in particular to a method for preventing steel plates and steel grit from being rusted in a wet shot blasting technology. The method comprises the following steps that (1), an antirust agent is added in circulating water, and the antirust agent and the circulating water are mixed to be uniform; (2), a foam inhibitor is added before the circulating water enters a surface treatment system; (3), the steel plates are delivered into the surface treatment system to be treated; and (4), water on the surfaces of the steel plates are dried. According to the method, the life of the steel grit in the wet shot blasting technology is prolonged by 50% or above; oil does not need to be applied to the surfaces of the steel plates, andthe oil applying cost is reduced by 5 yuan/ton; and downstream enterprises do not need to wash oil stains, the oil stain washing process and workshop cost is reduced by 250 yuan/ton or above, and therefore the method has the