An Ultrasonic Vibration Assisted Rolling Method for Production of Low Residual Stress Aluminum Alloy Strip

Abstract

The invention discloses an ultrasonic vibration auxiliary rolling method for producing a low-residual-stress aluminum alloy strip. The aluminum alloy strip or a medium-thickness plate serves as a rawmaterial for cold rolling (cold continuous rolling or single-rack cold rolling), a cold-rolled product passes through three continuous guide rollers with the ultrasonic vibration function, the three ultrasonic guide rollers are the same in diameter, the first ultrasonic guide roller and the third ultrasonic guide roller are located at the same height position, the second ultrasonic guide roller islocated above the position between the first ultrasonic guide roller and the third ultrasonic guide roller, and the vibration frequency range of the ultrasonic guide rollers is 20 KHZ-30 MHZ; and after the rolled product passes through the ultrasonic guide roller set, the inner residual stress of a rolled piece is reduced by 75% or above, low product residual stress is achieved, the product is rolled, and then, the high-quality and low-residual-stress aluminum alloy strip or foil product can be produced. By means of the ultrasonic vibration auxiliary rolling method, aluminum alloy strip low residual stress can be achieved, and important application prospects are achieved in the fields of automobile lightweight, electronic packaging, food protection and the like.

Description

technical field [0001] The invention belongs to the technical field of metal material rolling, in particular to an ultrasonic vibration-assisted rolling method for producing low residual stress aluminum alloy strips. Background technique [0002] At present, the lightweight of automobiles has attracted widespread attention from the international community, and people are committed to reducing the weight of automobiles through various processes and technologies. Because, as the weight of the car decreases, the energy consumption of the car will be greatly reduced. [0003] One of the ways to reduce the weight of cars is to use high-strength aluminum alloy materials instead of steel plates. Compared with steel, the density of aluminum alloy is greatly reduced. However, for aluminum alloy plate and strip products, it has greater springback than steel materials during the stamping process, which increases the difficulty of mold design and repair during the production process, ...

AI Technical Summary

Problems solved by technology

However, for aluminum alloy plate and strip products, it has greater springback than steel materials during the stamping process, which increases the difficulty of mold design and repair during the production process, and undoubtedly further increases production costs

At present, although many countries have successively produced all-aluminum automobiles, the production cost of automobiles made of aluminum alloys is much higher than that of automobiles made of steel materials.

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