Preparation technology of high-strength corrosion resistant aluminium alloy

Abstract

The invention belongs to the technical field of metal material and particularly relates to a preparation technology of high-strength corrosion resistant aluminium alloy. The preparation technology comprises the following steps: S1, feeding the raw material for preparing aluminium alloy in the crucible of a preparation device, sealing the preparation device, and feeding a refiner in the mixer of the preparation device; S2, on the basis of S1, starting the preparation device and raising the temperature of the preparation device until all raw materials in the crucible melt; S3, on the basis of S2, feeding nitrogen and the refiner in the preparation device to carry out dehydrogenation and refining on molten aluminium alloy; S4, on the basis of S2, starting an ultrasonic generator to carry outultrasonic treatment on the molten aluminium alloy in the crucible; and S5, on the basis of S4, pouring the molten aluminium alloy in the crucible in a casting mould, and naturally cooling the castingmould to a normal temperature. According to the preparation technology, all elements in aluminium alloy have mutual synergistic effect to enhance strength, ductility, corrosion resistance and wear resistance of aluminium alloy.

Description

technical field [0001] The invention belongs to the technical field of metal materials, in particular to a preparation process of a high-strength corrosion-resistant aluminum alloy. Background technique [0002] Aluminum alloy is composed of alloys with aluminum as the matrix element. The main alloying elements are copper, silicon, magnesium, zinc, manganese, and nickel, iron, titanium, chromium, lithium and other alloying elements. The density of aluminum alloy is low, but its strength is relatively high, which is close to or exceeds that of high-quality steel. It has good plasticity and can be processed into various profiles. It has excellent electrical conductivity, thermal conductivity and corrosion resistance. It is used in aviation, aerospace, automobiles, and machinery manufacturing. It is the most widely used non-ferrous metal material in the marine, marine and chemical industries, and its usage is second only to steel. At the same time, in the process of aluminum a...

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Problems solved by technology

[0003] There are also some technical solutions in the prior art, such as the Chinese patent application number CN201721742034.3, which provides an on-line degassing for the production of aluminum alloy ingots that is stirred by a stirring motor and input inert gas to remove hydrogen in the solution The device has the following disadvantages: 1. It cannot work continuously; 2. The inert gas is not fully utilized; the Chinese patent with the application number CN201821859724.1 includes a melting barrel, and a device that is arranged on one side of the melting barrel and connected with the melting barrel High-frequency power supply cabinet; the smelting barrel includes an outer barrel body with a circular accommodation space inside, a high-frequency induction coil arranged on the inner wall of the outer barrel body, and a A crucible for melting aluminum alloy, and a bung lid arranged above the outer barrel body and hinged with the outer barrel body. The bung lid and the outer barrel body are closely matched, so that the aluminum alloy can be quickly and efficiently produced. Melting aluminum alloy, but in the process of preparing aluminum alloy, there is no special intervention on the grain size and morphology of aluminum alloy, and the performance of the prepared alloy is average.

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