Study on the effects of initial temperature and thickness ratio of component metals on the preparation of aluminum/steel clad plates by the new different temperature rolling method

Abstract

The new different temperature rolling method (NDTRM) proposed in this paper is a simple preparation process that can realize the continuous preparation process of aluminum/steel clad plates with different specifications and no anti-oxidation measures. In this method, the extremely asymmetric rolling of component material properties is realized, effectively coordinating the component metal deformation, facilitating the continuous and effective bonding of the steel‑aluminum interface. With this method, using the room temperature Q235B plate and the high temperature 1060 aluminum plate as the base material, the aluminum/steel clad plates with a thickness of 7 mm and different component thickness ratios are prepared. As to this preparation process, a combination of experimental and numerical simulation method is adopted to study the effect of initial thickness ratios of component metals and 1060 aluminum temperature on the morphology and bonding properties of the clad plates. The results show that, with the NDTRM, when the initial thickness ratio is the same, increasing the 1060 aluminum temperature is inducive to improving the interface shear strength. Meanwhile, when the 1060 aluminum temperature is 600 °C, the interface shear strength is independent of the initial thickness ratio and is in optimal state, all exceeding 70 MPa. In the end, the mechanism of the NDTRM for bonding aluminum/steel clad plates effectively is given.