Method for preparing thin-film aluminum steel composite plate by ultrasonic-assisted liquid-solid rolling

A composite plate and ultrasonic technology, applied in the direction of metal rolling, auxiliary arrangement, metal rolling, etc., can solve the problems of low bonding strength of the composite plate interface, a large amount of use of flux, etc., to reduce the preparation cost, improve the bonding strength, reduce the Toxic effects

Active Publication Date: 2012-06-13
HARBIN INST OF TECH
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  • Abstract
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  • Application Information

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Problems solved by technology

[0009] The present invention aims to solve the problem that the existing liquid-solid rolling method needs to use a large amount of flux in the preparation of aluminum-steel layered metal composite plates, and the interface bonding strength of the obtained composite plates is low, and provides an ultrasonic-assisted liquid-solid rolling Method for preparing thin-film aluminum-steel composite panel

Method used

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specific Embodiment approach 1

[0012] Specific implementation mode 1: This implementation mode is a method for preparing thin-film aluminum-steel composite panels by ultrasonic-assisted liquid-solid rolling, which is specifically completed according to the following steps:

[0013] 1. First, remove the dirt and oxide film on the surface of the steel plate. After drying, preheat it for 30 minutes to 120 minutes under the protection of nitrogen at a temperature of 100 ° C to 400 ° C to obtain the base material of the steel plate; Melting, and then under the rotation of the impeller at 500 rpm to 10,000 rpm, the liquid aluminum forms a wave peak. The peak temperature of the liquid aluminum is 680 ° C ~ 800 ° C, and the peak height of the liquid aluminum is the thickness of the steel plate base material obtained in step 1. 0.3 to 2.0 times the peak width of liquid aluminum is 20mm to 300mm, and the number of peaks of liquid aluminum is 1 to 3; 3. With the assistance of ultrasonic waves with a frequency of 20kHz ...

specific Embodiment approach 2

[0020] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is: in step 1, preheat for 60 min to 90 min under the protection of nitrogen at a temperature of 200° C. to 300° C. to obtain the steel plate base material. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0021] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that in step 2, under the rotation of the impeller at 2000 rpm to 8000 rpm, the liquid aluminum forms a wave peak, and the wave peak of the liquid aluminum The temperature is 700°C-780°C, the peak height of the liquid aluminum is 0.5-1.8 times the thickness of the steel plate base material obtained in step 1, the peak width of the liquid aluminum is 100mm-200mm, and the number of peaks of the liquid aluminum is 1-2. Others are the same as in the first or second embodiment.

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Abstract

The invention relates to a method for preparing a thin-film aluminum steel composite plate by ultrasonic-assisted liquid-solid rolling, which solves the problems that: when an aluminum steel layered metal composite plate is prepared by the traditional liquid-solid rolling method, a large number of flux is needed and the obtained composite plate has low interface bonding strength. The method comprises the following steps: firstly, treating a steel surface, and preheating under the protection of nitrogen; secondly, melting all pure aluminum materials under the protection of nitrogen, and allowing liquid aluminum to form a crest; thirdly, plating aluminum by aids of ultrasound; and finally, adopting an internally-cooled water-cooled roller to carry out cooling rolling so as to obtain the thin-film aluminum steel composite plate. The method has the advantages that: firstly, the use of flux is avoided, the toxic side effects on the staff and the adverse effects on the bonding interface of the aluminum steel are reduced, and the preparation cost is reduced; and finally, the bonding strength is improved. The invention is mainly used for preparing the thin-film aluminum steel composite plate.

Description

technical field [0001] The invention relates to a preparation method of an aluminum-steel composite plate. Background technique [0002] Layered metal composite composite plate is a new type of material prepared by using composite technology to make two or more metals with different physical, chemical and mechanical properties realize firm metallurgical bonding at the interface. Although each layer of metal still maintains its original characteristics, its performance is much superior to that of a single metal. Therefore, new composite materials composed of dissimilar metals combined in layers have received widespread attention in recent years. Aluminum and steel are common metals, and their composite panels are widely used in power generation equipment, automobiles, ships, steel transportation, nuclear energy, machinery, aerospace, petroleum, chemical industry, etc. [0003] The production methods of aluminum-steel layered metal composite panels mainly include semi-solid p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B47/00B21B45/02
Inventor 冷雪松王谦闫久春叶广郁于汉臣杨天豪
Owner HARBIN INST OF TECH
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