Multilayer cold rolling composite board diffusion annealing technology

Abstract

The invention discloses a multilayer cold rolling composite board diffusion annealing technology, and relates to the technical field of composite rolling. The technology includes the steps that a multilayer composite board formed by cold rolling compounding of a base material and a cladding material is fed into an annealing furnace, the temperature is quickly raised to a technological temperature, and the temperature rising speed is 40-80 DEG C / S, so that diffusion annealing treatment is conducted; and the annealing treatment temperature ranges from 800 DEG C to 1200 DEG C, annealing time is 2-6min, atomic bonds permeate with one another to obtain a stable alloy structure bonding layer, the temperature is quickly lowered to an indoor temperature, and the cooling speed is 40-80 DEG C / S. The multilayer cold rolling composite board diffusion annealing technology is simple, the stable alloy structure bonding layer can be obtained, the effect that the composite board can approach the physical properties of a single base material is guaranteed, and practicability and reliability are achieved.

Description

Technical field [0001] The invention relates to the technical field of composite rolling, in particular to a diffusion annealing process for a multilayer cold-rolled composite plate. Background technique [0002] At present, the base material and the cladding material are only used for physical interlocking after composite rolling, and each component metal does not form a stable combined transition layer, which makes the structure stability after composite poor, and it is difficult for the composite board to approach the physical properties of a single substrate. It is necessary to go through an annealing furnace to perform diffusion annealing within a certain temperature and time range. Based on this, it is necessary to design a diffusion annealing process for multilayer cold-rolled composite panels. Summary of the invention [0003] In view of the shortcomings in the prior art, the purpose of the present invention is to provide a diffusion annealing process for multi-layer cold-...

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Problems solved by technology

[0002] At present, the base material and the cladding material are only physically interlocked after composite rolling, and the metal components of each component do not form a transition layer that is stably combined, making the structural stability after the composite poor, and it is difficult for the composite plate to approach the physical properties of a single substrate, which is Diffusion annealing needs to be carried out in a certain temperature and time range through the annealing furnace. Based on this, it is necessary to design a diffusion annealing process for multi-layer cold-rolled composite plates.