A kind of composite plate rolling method

Abstract

The invention relates to a composite board rolling method. The composite board rolling method comprises a composite blank heating and rolling process. The step of composite blank heating is as follows: a composite blank is heated in a heating furnace, wherein the heating and heat preservation time is greater than or equal to 1.3 min / mm; the rolling process comprises the following steps: performingthe rolling of the composite blank; before rolling or between passes, enabling the composite blank to enter an instant cooling device at the speed of 0.5 m / s-5m / s to be cooled, wherein the compositeblank is cooled in each pass or among a plurality of passes, a single-pass cooling or reciprocating cooling mode is adopted for one or more times during cooling, only the upper surface or the lower surface of the composite blank is subjected to single-side cooling in the cooling process, and then the composite blank is rolled into a finished product; during rolling, setting the pass reduction to be less than 25 mm, and setting the pass reduction rate to be less than 12%; and performing rolling to a finished product thickness. According to the method, the problems of head warping, buckling, buckling and the like in the composite blank rolling process can be effectively solved, the shape of the composite board is excellent, and the yield, the percent of pass and the production efficiency ofthe composite board are improved.

Description

technical field [0001] The invention relates to a rolling method of a composite plate, in particular to an asymmetric heterogeneous composite plate rolling method, which belongs to the field of rolling processing of metal materials. Background technique [0002] With the continuous development of science and industry, ordinary alloys or a single metal have been difficult to meet the requirements of industrial development for the comprehensive performance of materials, and composite panels have emerged as the times require. Composite boards made of two or more metal materials and made by different processes can meet special comprehensive performance requirements. At present, composite panels generally use high-strength and cheap carbon steel plates, container plates, low-alloy steels, etc. Composite materials with special properties, such as aluminum and aluminum, not only have excellent corrosion resistance, but also have the strength of ordinary steel plates as structural ...

AI Technical Summary

Problems solved by technology

By adopting the method of asymmetrical cooling + rolling for asymmetrical heterogeneous composite billets, the problems of plate shapes such as buckle head and buckle produced during the rolling process of composite billets are solved

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