Preparation process of a high-strength corrosion-resistant aluminum alloy

Abstract

The invention belongs to the technical field of metal materials, and specifically relates to a preparation process of a high-strength corrosion-resistant aluminum alloy, which includes the following steps: S1: put the raw materials for preparing aluminum alloy into the crucible of the preparation device, and close the preparation device; Put the refiner into the mixer in the preparation device; S2: On the basis of step S1, start the preparation device, increase the temperature in the preparation device until all the raw materials in the crucible are melted; S3: On the basis of step S2, Introduce nitrogen and refiner into the preparation device to dehydrogenate and refine the aluminum alloy melt; S4: start the ultrasonic generator on the basis of step S2, and perform ultrasonic treatment on the aluminum alloy melt in the crucible; S5: On the basis of step S4, pour the molten aluminum alloy in the crucible into the casting mold, and wait for it to cool down to normal temperature naturally; various elements in the aluminum alloy of the present invention cooperate with each other to enhance the strength, ductility, Corrosion and abrasion resistance.

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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