| abstract |
The invention discloses a preparation method of a high-strength aluminum-stainless steel composite material, comprising the following steps: step (1), compositing stainless steel and high-strength aluminum alloy; the composite method is to press stainless steel and high-strength aluminum alloy together, then flame brazing is performed on the edges where the two are combined, and after the welding is completed, hot rolling is performed, and the heating temperature is 720-920° C.; The surface roughness Ra is 6-12 μm, and the thickness of the aluminum alloy material is not less than 5 mm; in step (3), a pure aluminum layer with a thickness of 25-55 μm is processed on the rough surface of the high-strength aluminum alloy by thermal spraying. The stainless steel and the aluminum alloy are compounded by the method of the present invention, so that the composite material has a low density relative to the stainless steel, and also has a higher strength than the aluminum alloy. Perceptual effect. |