Alclad casting ingot rolling method

Abstract

The invention provides an alclad casting ingot rolling method. The alclad casting ingot rolling method comprises the following steps of firstly feeding a casting ingot and a alclad plate after milling into a rolling gap to enable a casting ingot welding central line and a rolling gap to be coincided, performing static pressure welding rolling and obtaining an alclad casting ingot after first-time rolling; performing second-time rolling on the first-time rolled alclad casting ingot after heating and obtaining a rolled alclad casting ingot, wherein the alclad casting ingot is obtained from the above step; wherein the second-time rolling comprises a structure welding process, a structure improvement process, a depress deformation process and a plate shape control process. According to the alclad casting ingot rolling method, rolling is performed in twice, process parameters are controlled, and the temperature for second-time rolling is fit, so that the surface quality of plates after rolling is stable and surface 11# defects generated during the rolling process are eliminated.

Description

technical field [0001] The invention belongs to the technical field of metal materials, and in particular relates to a rolling method of an aluminum-clad cast ingot. Background technique [0002] Aluminum alloy is an alloy based on aluminum, the main alloying elements are copper, silicon, magnesium, zinc and manganese. Aluminum alloy is the most widely used non-ferrous metal structural material in industry. At present, aluminum alloy is one of the main types of aluminum alloy profiles. Its production method is through aluminum alloy or direct cold casting into ingots, or continuous casting into thick strips, followed by hot rolling into a predetermined thickness, and then a separate Process After the strip is cold-rolled to the final thickness, heat treatment is carried out to improve the mechanical properties and corrosion resistance of the aluminum alloy, improve its processing performance, and obtain dimensional stability. [0003] Among many aluminum alloy products, al...

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Problems solved by technology

[0004] In the aluminum-clad composite panel production process, the rolling of the aluminum-clad ingot is the initial step of the aluminum-clad composite panel process, and the quality of the process is an important prerequisite for the subsequent process. , 11# defects often appear. The so-called 11# defects refer to a large amount of Al powder, Fe powder, Al 2 o 3 Under the conditions of the carbonization and decomposition of the emulsion, the appearance defects such as patterns and watermarks will appear on the surface of the aluminum-clad ingot due to rolling. Furthermore, as the rolling progresses, these impurities will enter the interior of the aluminum-clad ingot. Thus ultimately affecting the performance indicators of the aluminum-clad composite panel

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