A preparation process of aluminum alloy for power equipment in marine environment

A technology of electric power equipment and preparation process, which is applied in the field of aluminum alloy, can solve problems such as metal structure breakage and loss, and achieve the effect of stable production process and good weather resistance

Active Publication Date: 2018-07-27
SHANDONG INNOVATION METAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the stress corrosion, hydrogen embrittlement, and intergranular corrosion of existing aluminum alloy products in the ocean will cause the metal s...

Method used

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Embodiment １

[0028] A process for preparing an aluminum alloy for power equipment in a marine environment according to the present invention is specifically a pipe for power equipment, which sequentially includes the following steps:

[0029] (1) Composition optimization, the mass percentage of elements in the aluminum alloy ingot is as follows: Si is 1.2%, Fe is 0.2%, Cu is 0.03%, Mn is 0.9%, Mg is 0.7%, Sr is 0.03%, Cr is ≤0.1 %, Zn is 0.5%, Ti is ≤0.10%, single impurity is ≤0.05%, total impurity is ≤0.15%, and the rest is Al;

[0030] (2) Homogenization treatment; homogenization heating temperature: 530±10°C, heat preservation for 8 hours, air cooling + water cooling to room temperature.

[0031] (3) Extrusion and quenching; the extrusion temperature is 520°C, the outlet temperature is 515-520°C, and the extrusion speed is 2±0.5m / min. The quenching speed is 300-320°C / min.

[0032] (4) Aging treatment after stretching; the stretching rate is 2%, and the aging is 180°C for 10 hours.

...

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PUM

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Abstract

The invention discloses a preparation technique of aluminum alloy for power equipment in the marine environment. The preparation techniques comprises the steps of composition optimization, homogenizing, squeezing, quenching, drawing, aging, cooling, cleaning, alkali washing, acid washing, oxidation and hydrophobic surface manufacturing. As for aluminum alloy products obtained through the technique, the tensile strength is larger than or equal to 420 MPa, the yield strength is larger than or equal to 320 MPa, the elongation is larger than or equal to 18%, the Brinell Hardness is larger than or equal to 100 HB, the electrical conductivity is larger than or equal to 27 MS/m, the corrosion resistance and weather resistance are good, corrosion damage of high-humidity corrosive saline ions to aluminum alloy workpieces can be effectively resisted, and the production process is stable.

Description

technical field [0001] The invention relates to the technical field of aluminum alloys, in particular to a process for preparing aluminum alloys for power equipment in marine environments. Background technique [0002] At present, the high-strength and high-conductivity aluminum alloy thick-walled pipes used in the protection of power equipment and facilities play a vital role in the protection of high-voltage wires and cables. , the strength of the current pipes is reduced during on-line quenching, and the corrosion resistance is deteriorated. Although off-line quenching can improve the strength of the alloy, the production efficiency and yield are reduced. [0003] Because aluminum alloy has high specific strength, strong seawater corrosion resistance, weldability, easy processing and forming, strong recyclability, good environmental protection, no low temperature brittleness, and no magnetism, the application in marine power equipment can effectively reduce quality and im...

Claims

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Application Information

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IPC IPC(8): C22C21/02C22C21/00C22C21/08C25D11/08C25D11/16C22F1/04C22F1/043C22F1/05C09D133/00
CPCC09D7/61C09D133/00C22C21/00C22C21/02C22C21/08C22F1/002C22F1/04C22F1/043C22F1/05C25D11/08C25D11/16C08L91/00C08K2003/327C08K3/36
Inventor 崔立新赵晓光成凯马维红
Owner SHANDONG INNOVATION METAL TECH
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