Rolling method for producing wide-width packaging aluminum plate

Abstract

The invention discloses a rolling method for producing a wide-width packaging aluminum plate. The rolling method mainly comprises the steps that (1), the specifications of a skin material and a core material are determined and the width and length of the skin material are smaller than that of the core material, and the upper and lower surface of the core material are coated with and fixed to the skin material to form composite ingots; (2), the composite ingots are heated by a two-stage type heating institution; (3), a mill roll is preheated to the working temperature; and (4), rolling is performed, specifically, primary longitudinal rolling, transverse rolling and secondary longitudinal rolling are performed in sequence. By controlling an emulsion at the initial stage of rolling and matching the key process parameters such as the rolling reduction of each pass and the rolling speed, the three factors are closely matched to ensure the smooth operation of rolling, broadsiding and coating; and the width of the packaging aluminum plate is not limited by the width of the ingot casting. Compared with an existing conventional process, the rolling method can produce wider packaging aluminum thin panels, shortens the processing process, improves the production efficiency, improves the surface quality, and achieves the goal of reducing the defects such as emulsion marks, color differenceand black strips.

Description

Technical field [0001] The invention belongs to the field of aluminum rolling, and specifically relates to a rolling method for producing wide-width clad aluminum plates. Background technique [0002] Aluminum alloy is commonly used as aerospace structural material due to its high strength, good toughness, good heat resistance, excellent formability and damage resistance. At present, it is the fuselage skin, the fuselage frame, the lower wing skin, the wing rib and Important structural materials for spars and empennages. Among them, the skin materials mostly use aluminum-clad thin plates, and the production process is more complicated. In particular, the rolling of aluminum-clad ingots is an important process for aluminum-clad skin plates, which is important for the subsequent surface quality, coverage and plate shape. influences. [0003] With the rapid development of the aviation industry, the demand for wide-width (width ≥2000mm) aluminum-clad skin panels is increasing. Wider ...

AI Technical Summary

Problems solved by technology

However, the existing technology rarely involves the production of wide-width aluminum-clad skin panels, because the core materials of the skin panels are mostly 2 and 7 series aluminum alloys, and the melting and casting process limits the width of the ingot. Generally, the maximum width of the ingot can only be made To 2080mm, completely unable to be used for the production of aluminum-clad skin panels with a width ≥ 2000mm

For example, in the patent CN 104525563 A "A Rolling Method for Aluminum-Cladding Ingots", the plate mentioned can only be 1800mm, and the method involved is two-time rolling, which increases the production process and brings more benefits to industrial production. inconvenient

Patent CN104526281A "A Preparation Process of Aluminum Alloy Brazing Sheet" also adopts the method of secondary rolling, which increases the production process and reduces the production efficiency

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