Corrugated-flat rolling composite method for steel/aluminum/aluminum alloy laminated composite plates

A corrugated-flat rolling composite method of a steel/aluminum/aluminum alloy laminated composite plate, comprising the following steps:

• 1) blank preparation:
• providing a steel plate and an aluminum plate, heat treating the steel plate and the aluminum plate respectively, removing oil stains and oxidation films on the surfaces of the steel plate and the aluminum plate, rough grinding the surfaces to be bonded of the steel plate and the aluminum plate, and then letting stand and drying;
• 2) preparation of steel/aluminum assembled blank:
• stacking the steel plate and the aluminum plate treated in the step 1) together so that the surfaces to be bonded are in contact, folding length side and width side of the aluminum plate to wrap the steel plate, binding the head and tail with aluminum wires to obtain a two-layer assembled blank;
• 3) preparation of steel/aluminum laminated composite plate:
• cold rolling the two-layer assembled blank prepared in the step 2) by a corrugated mill with a corrugated roll as an upper roll and a flat roll as a lower roll, and allowing the corrugated roll to be in contact with the aluminum plate and the flat roll to be in contact with the steel plate to prepare a steel/aluminum laminated composite plate having a corrugated surface on the aluminum side;
• 4) preparation of steel/aluminum/aluminum alloy assembled blank with corrugated-flat interface:
• providing an aluminum alloy plate with the same length and width as the steel/aluminum laminated composite plate prepared in the step 3), stacking the aluminum alloy plate and the steel/aluminum laminated composite plate together so that the surface to be bonded of the aluminum alloy plate is in contact with the corrugated surface of the aluminum side of the steel/aluminum laminated composite plate, and binding the head and tail with aluminum wires to form a steel/aluminum/aluminum alloy assembled blank with a corrugated-flat interface;
• 5) preparation of steel/aluminum/aluminum alloy laminated composite plate:
• heating the steel/aluminum/aluminum alloy assembled blank with a corrugated-flat interface prepared in the step 4), roll forming the steel/aluminum/aluminum alloy assembled blank with a corrugated-flat interface by using a flat-roll hot rolling mill, annealing, straightening and trimming sequentially to prepare a high-performance steel/aluminum/aluminum alloy laminated composite plate.